Run cargo fmt, add root preflight.

.gitignore

@@ -1,3 +1,4 @@
+Rocket.toml
 /target
 **/*.rs.bk
 .env

Cargo.toml

@@ -1,14 +1,13 @@
 [package]
 name = "revolt"
-version = "0.1.0"
+version = "0.2.3"
 authors = ["Paul Makles <paulmakles@gmail.com>"]
 edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-mongodb = "0.9.2"
+mongodb = { version = "1.1.0-beta", default-features = false, features = ["sync"] } # FIXME: rewrite database with async API
-bson = "0.14.1"
 rocket = { version = "0.4.4", default-features = false }
 once_cell = "1.3.1"
 dotenv = "0.15.0"
@@ -27,3 +26,5 @@ hashbrown = "0.7.1"
 serde_json = "1.0.51"
 rocket_cors = "0.5.2"
 bitfield = "0.13.2"
+lru = "0.5.3"
+lazy_static = "1.4.0"

README.md

@@ -0,0 +1,9 @@
+![](assets/banner.png)
+
+Delta is a **blazing fast API server** built with Rust for the REVOLT platform.
+
+Features:
+- Robust and efficient API routes for running a chat platform.
+- Distributed notification system, allowing any node to be seamlessly connected.
+- Simple deployment, based mostly on pure Rust code and libraries.
+- Hooks up to a MongoDB deployment, provide URI and no extra work needed.

Rocket.toml

@@ -1,7 +0,0 @@
-[development]
-address = "192.168.0.10"
-port = 5500
-
-[production]
-address = "192.168.0.10"
-port = 5500

src/database/channel.rs

@@ -1,33 +1,174 @@
+use super::get_collection;
+
+use lru::LruCache;
+use mongodb::bson::{doc, from_bson, Bson};
+use rocket::http::RawStr;
+use rocket::request::FromParam;
 use serde::{Deserialize, Serialize};
+use std::sync::{Arc, Mutex};
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct LastMessage {
+    // message id
     id: String,
+    // author's id
     user_id: String,
+    // truncated content with author's name prepended (for GDM / GUILD)
     short_content: String,
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct Channel {
     #[serde(rename = "_id")]
     pub id: String,
     #[serde(rename = "type")]
     pub channel_type: u8,
 
-    // for Direct Messages
+    // DM: whether the DM is active
     pub active: Option<bool>,
-
+    // DM + GDM: last message in channel
-    // for DMs / GDMs
     pub last_message: Option<LastMessage>,
+    // DM + GDM: recipients for channel
     pub recipients: Option<Vec<String>>,
-
+    // GDM: owner of group
-    // for GDMs
     pub owner: Option<String>,
-
+    // GUILD: channel parent
-    // for Guilds
     pub guild: Option<String>,
-
+    // GUILD + GDM: channel name
-    // for Guilds and Group DMs
     pub name: Option<String>,
+    // GUILD + GDM: channel description
     pub description: Option<String>,
 }
+
+lazy_static! {
+    static ref CACHE: Arc<Mutex<LruCache<String, Channel>>> =
+        Arc::new(Mutex::new(LruCache::new(4_000_000)));
+}
+
+pub fn fetch_channel(id: &str) -> Result<Option<Channel>, String> {
+    {
+        if let Ok(mut cache) = CACHE.lock() {
+            let existing = cache.get(&id.to_string());
+
+            if let Some(channel) = existing {
+                return Ok(Some((*channel).clone()));
+            }
+        } else {
+            return Err("Failed to lock cache.".to_string());
+        }
+    }
+
+    let col = get_collection("channels");
+    if let Ok(result) = col.find_one(doc! { "_id": id }, None) {
+        if let Some(doc) = result {
+            if let Ok(channel) = from_bson(Bson::Document(doc)) as Result<Channel, _> {
+                let mut cache = CACHE.lock().unwrap();
+                cache.put(id.to_string(), channel.clone());
+
+                Ok(Some(channel))
+            } else {
+                Err("Failed to deserialize channel!".to_string())
+            }
+        } else {
+            Ok(None)
+        }
+    } else {
+        Err("Failed to fetch channel from database.".to_string())
+    }
+}
+
+pub fn fetch_channels(ids: &Vec<String>) -> Result<Option<Vec<Channel>>, String> {
+    let mut missing = vec![];
+    let mut channels = vec![];
+
+    {
+        if let Ok(mut cache) = CACHE.lock() {
+            for gid in ids {
+                let existing = cache.get(gid);
+
+                if let Some(channel) = existing {
+                    channels.push((*channel).clone());
+                } else {
+                    missing.push(gid);
+                }
+            }
+        } else {
+            return Err("Failed to lock cache.".to_string());
+        }
+    }
+
+    if missing.len() == 0 {
+        return Ok(Some(channels));
+    }
+
+    let col = get_collection("channels");
+    if let Ok(result) = col.find(doc! { "_id": { "$in": missing } }, None) {
+        for item in result {
+            let mut cache = CACHE.lock().unwrap();
+            if let Ok(doc) = item {
+                if let Ok(channel) = from_bson(Bson::Document(doc)) as Result<Channel, _> {
+                    cache.put(channel.id.clone(), channel.clone());
+                    channels.push(channel);
+                } else {
+                    return Err("Failed to deserialize channel!".to_string());
+                }
+            } else {
+                return Err("Failed to fetch channel.".to_string());
+            }
+        }
+
+        Ok(Some(channels))
+    } else {
+        Err("Failed to fetch channel from database.".to_string())
+    }
+}
+
+impl<'r> FromParam<'r> for Channel {
+    type Error = &'r RawStr;
+
+    fn from_param(param: &'r RawStr) -> Result<Self, Self::Error> {
+        if let Ok(result) = fetch_channel(param) {
+            if let Some(channel) = result {
+                Ok(channel)
+            } else {
+                Err(param)
+            }
+        } else {
+            Err(param)
+        }
+    }
+}
+
+/*pub fn test() {
+    use std::time::Instant;
+
+    let now = Instant::now();
+    let mut cache = CACHE.lock().unwrap();
+    println!("I'm about to write 4 million entries to cache.");
+    for i in 0..4_000_000 {
+        let c = Channel {
+            id: "potato".to_string(),
+            channel_type: 0,
+
+            active: None,
+            last_message: None,
+            description: None,
+            guild: None,
+            name: None,
+            owner: None,
+            recipients: None
+        };
+
+        cache.put(format!("{}", i), c);
+    }
+
+    println!("It took {} seconds, roughly {}ms per entry.", now.elapsed().as_secs_f64(), now.elapsed().as_millis() as f64 / 1_000_000.0);
+
+    let now = Instant::now();
+    println!("Now I'm going to read every entry and immediately dispose of it.");
+    for i in 0..4_000_000 {
+        cache.get(&format!("{}", i));
+    }
+
+    println!("It took {} seconds, roughly {}ms per entry.", now.elapsed().as_secs_f64(), now.elapsed().as_millis() as f64 / 1_000_000.0);
+}*/

src/database/guild.rs

@@ -1,20 +1,26 @@
-use bson::doc;
+use super::get_collection;
-use serde::{Deserialize, Serialize};
 
-#[derive(Serialize, Deserialize, Debug)]
+use lru::LruCache;
+use mongodb::bson::{doc, from_bson, Bson};
+use rocket::http::RawStr;
+use rocket::request::FromParam;
+use serde::{Deserialize, Serialize};
+use std::sync::{Arc, Mutex};
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct MemberRef {
     pub guild: String,
     pub user: String,
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct Member {
     #[serde(rename = "_id")]
     pub id: MemberRef,
     pub nickname: Option<String>,
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct Invite {
     pub code: String,
     pub creator: String,
@@ -27,7 +33,7 @@ pub struct Ban {
     pub reason: String,
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct Guild {
     #[serde(rename = "_id")]
     pub id: String,
@@ -41,3 +47,132 @@ pub struct Guild {
 
     pub default_permissions: u32,
 }
+
+lazy_static! {
+    static ref CACHE: Arc<Mutex<LruCache<String, Guild>>> =
+        Arc::new(Mutex::new(LruCache::new(4_000_000)));
+}
+
+pub fn fetch_guild(id: &str) -> Result<Option<Guild>, String> {
+    {
+        if let Ok(mut cache) = CACHE.lock() {
+            let existing = cache.get(&id.to_string());
+
+            if let Some(guild) = existing {
+                return Ok(Some((*guild).clone()));
+            }
+        } else {
+            return Err("Failed to lock cache.".to_string());
+        }
+    }
+
+    let col = get_collection("guilds");
+    if let Ok(result) = col.find_one(doc! { "_id": id }, None) {
+        if let Some(doc) = result {
+            if let Ok(guild) = from_bson(Bson::Document(doc)) as Result<Guild, _> {
+                let mut cache = CACHE.lock().unwrap();
+                cache.put(id.to_string(), guild.clone());
+
+                Ok(Some(guild))
+            } else {
+                Err("Failed to deserialize guild!".to_string())
+            }
+        } else {
+            Ok(None)
+        }
+    } else {
+        Err("Failed to fetch guild from database.".to_string())
+    }
+}
+
+impl<'r> FromParam<'r> for Guild {
+    type Error = &'r RawStr;
+
+    fn from_param(param: &'r RawStr) -> Result<Self, Self::Error> {
+        if let Ok(result) = fetch_guild(param) {
+            if let Some(channel) = result {
+                Ok(channel)
+            } else {
+                Err(param)
+            }
+        } else {
+            Err(param)
+        }
+    }
+}
+
+pub fn get_member(guild_id: &String, member: &String) -> Option<Member> {
+    if let Ok(result) = get_collection("members").find_one(
+        doc! {
+            "_id.guild": &guild_id,
+            "_id.user": &member,
+        },
+        None,
+    ) {
+        if let Some(doc) = result {
+            Some(from_bson(Bson::Document(doc)).expect("Failed to unwrap member."))
+        } else {
+            None
+        }
+    } else {
+        None
+    }
+}
+
+pub fn get_invite<U: Into<Option<String>>>(
+    code: &String,
+    user: U,
+) -> Option<(String, String, Invite)> {
+    let mut doc = doc! {
+        "invites": {
+            "$elemMatch": {
+                "code": &code
+            }
+        }
+    };
+
+    if let Some(user_id) = user.into() {
+        doc.insert(
+            "bans",
+            doc! {
+                "$not": {
+                    "$elemMatch": {
+                        "id": user_id
+                    }
+                }
+            },
+        );
+    }
+
+    if let Ok(result) = get_collection("guilds").find_one(
+        doc,
+        mongodb::options::FindOneOptions::builder()
+            .projection(doc! {
+                "_id": 1,
+                "name": 1,
+                "invites.$": 1,
+            })
+            .build(),
+    ) {
+        if let Some(doc) = result {
+            let invite = doc
+                .get_array("invites")
+                .unwrap()
+                .iter()
+                .next()
+                .unwrap()
+                .as_document()
+                .unwrap();
+
+            Some((
+                doc.get_str("_id").unwrap().to_string(),
+                doc.get_str("name").unwrap().to_string(),
+                from_bson(Bson::Document(invite.clone())).unwrap(),
+            ))
+        } else {
+            None
+        }
+    } else {
+        None
+    }
+}

src/database/message.rs

@@ -1,26 +1,109 @@
-use bson::UtcDateTime;
+use super::get_collection;
+use crate::database::channel::Channel;
+use crate::notifications;
+use crate::notifications::events::message::Create;
+use crate::notifications::events::Notification;
+use crate::routes::channel::ChannelType;
+
+use mongodb::bson::from_bson;
+use mongodb::bson::{doc, to_bson, Bson, DateTime};
+use rocket::http::RawStr;
+use rocket::request::FromParam;
 use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct PreviousEntry {
     pub content: String,
-    pub time: UtcDateTime,
+    pub time: DateTime,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct Message {
     #[serde(rename = "_id")]
     pub id: String,
-    // pub nonce: String, used internally
+    pub nonce: Option<String>,
     pub channel: String,
     pub author: String,
 
     pub content: String,
-    pub edited: Option<UtcDateTime>,
+    pub edited: Option<DateTime>,
 
-    pub previous_content: Option<Vec<PreviousEntry>>,
+    pub previous_content: Vec<PreviousEntry>,
 }
 
 // ? TODO: write global send message
 // ? pub fn send_message();
 // ? handle websockets?
+impl Message {
+    pub fn send(&self, target: &Channel) -> bool {
+        if get_collection("messages")
+            .insert_one(to_bson(&self).unwrap().as_document().unwrap().clone(), None)
+            .is_ok()
+        {
+            notifications::send_message_given_channel(
+                Notification::message_create(Create {
+                    id: self.id.clone(),
+                    nonce: self.nonce.clone(),
+                    channel: self.channel.clone(),
+                    author: self.author.clone(),
+                    content: self.content.clone(),
+                }),
+                &target,
+            );
+
+            let short_content: String = self.content.chars().take(24).collect();
+
+            // !! this stuff can be async
+            if target.channel_type == ChannelType::DM as u8
+                || target.channel_type == ChannelType::GROUPDM as u8
+            {
+                let mut update = doc! {
+                    "$set": {
+                        "last_message": {
+                            "id": &self.id,
+                            "user_id": &self.author,
+                            "short_content": short_content,
+                        }
+                    }
+                };
+
+                if target.channel_type == ChannelType::DM as u8 {
+                    update
+                        .get_document_mut("$set")
+                        .unwrap()
+                        .insert("active", true);
+                }
+
+                if get_collection("channels")
+                    .update_one(doc! { "_id": &target.id }, update, None)
+                    .is_ok()
+                {
+                    true
+                } else {
+                    false
+                }
+            } else {
+                true
+            }
+        } else {
+            false
+        }
+    }
+}
+
+impl<'r> FromParam<'r> for Message {
+    type Error = &'r RawStr;
+
+    fn from_param(param: &'r RawStr) -> Result<Self, Self::Error> {
+        let col = get_collection("messages");
+        let result = col
+            .find_one(doc! { "_id": param.to_string() }, None)
+            .unwrap();
+
+        if let Some(message) = result {
+            Ok(from_bson(Bson::Document(message)).expect("Failed to unwrap message."))
+        } else {
+            Err(param)
+        }
+    }
+}

src/database/mod.rs

@@ -1,4 +1,5 @@
-use mongodb::{Client, Collection, Database};
+use mongodb::bson::doc;
+use mongodb::sync::{Client, Collection, Database};
 use std::env;
 
 use once_cell::sync::OnceCell;
@@ -9,6 +10,12 @@ pub fn connect() {
         Client::with_uri_str(&env::var("DB_URI").expect("DB_URI not in environment variables!"))
             .expect("Failed to init db connection.");
 
+    client
+        .database("revolt")
+        .collection("migrations")
+        .find(doc! {}, None)
+        .expect("Failed to get migration data from database.");
+
     DBCONN.set(client).unwrap();
 }
 

src/database/mutual.rs

@@ -1,6 +1,6 @@
 use super::{get_collection, MemberPermissions};
 
-use bson::doc;
+use mongodb::bson::doc;
 use mongodb::options::FindOptions;
 
 pub fn find_mutual_guilds(user_id: &str, target_id: &str) -> Vec<String> {
@@ -111,7 +111,7 @@ pub fn has_mutual_connection(user_id: &str, target_id: &str, with_permission: bo
 
                     let permissions = guild.get_i32("default_permissions").unwrap() as u32;
 
-                    if MemberPermissions([ permissions ]).get_send_direct_messages() {
+                    if MemberPermissions([permissions]).get_send_direct_messages() {
                         return true;
                     }
                 }

src/database/permissions.rs

@@ -1,9 +1,8 @@
 use super::mutual::has_mutual_connection;
-use crate::database::guild::Member;
+use crate::database::channel::Channel;
+use crate::database::guild::{fetch_guild, get_member, Guild, Member};
 use crate::database::user::UserRelationship;
 use crate::guards::auth::UserRef;
-use crate::guards::channel::ChannelRef;
-use crate::guards::guild::{get_member, GuildRef};
 
 use num_enum::TryFromPrimitive;
 
@@ -88,8 +87,8 @@ pub fn get_relationship(a: &UserRef, b: &UserRef) -> Relationship {
 
 pub struct PermissionCalculator {
     pub user: UserRef,
-    pub channel: Option<ChannelRef>,
+    pub channel: Option<Channel>,
-    pub guild: Option<GuildRef>,
+    pub guild: Option<Guild>,
     pub member: Option<Member>,
 }
 
@@ -103,14 +102,14 @@ impl PermissionCalculator {
         }
     }
 
-    pub fn channel(self, channel: ChannelRef) -> PermissionCalculator {
+    pub fn channel(self, channel: Channel) -> PermissionCalculator {
         PermissionCalculator {
             channel: Some(channel),
             ..self
         }
     }
 
-    pub fn guild(self, guild: GuildRef) -> PermissionCalculator {
+    pub fn guild(self, guild: Guild) -> PermissionCalculator {
         PermissionCalculator {
             guild: Some(guild),
             ..self
@@ -125,7 +124,11 @@ impl PermissionCalculator {
                 0..=1 => None,
                 2 => {
                     if let Some(id) = &channel.guild {
-                        GuildRef::from(id.clone())
+                        if let Ok(result) = fetch_guild(id) {
+                            result
+                        } else {
+                            None
+                        }
                     } else {
                         None
                     }
@@ -168,18 +171,23 @@ impl PermissionCalculator {
                             }
                         }
 
+                        // ? In this case, it is a "self DM".
+                        if other_user == "" {
+                            return 1024 + 128 + 32 + 16 + 1;
+                        }
+
                         let relationships = self.user.fetch_relationships();
                         let relationship =
                             get_relationship_internal(&self.user.id, &other_user, &relationships);
 
                         if relationship == Relationship::Friend {
-                            permissions = 177;
+                            permissions = 1024 + 128 + 32 + 16 + 1;
                         } else if relationship == Relationship::Blocked
                             || relationship == Relationship::BlockedOther
                         {
                             permissions = 1;
                         } else if has_mutual_connection(&self.user.id, other_user, true) {
-                            permissions = 177;
+                            permissions = 1024 + 128 + 32 + 16 + 1;
                         } else {
                             permissions = 1;
                         }

src/database/user.rs

@@ -1,12 +1,12 @@
-use bson::UtcDateTime;
+use mongodb::bson::DateTime;
 use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct UserEmailVerification {
     pub verified: bool,
     pub target: Option<String>,
-    pub expiry: Option<UtcDateTime>,
+    pub expiry: Option<DateTime>,
-    pub rate_limit: Option<UtcDateTime>,
+    pub rate_limit: Option<DateTime>,
     pub code: Option<String>,
 }
 
@@ -23,6 +23,7 @@ pub struct User {
     pub email: String,
     pub username: String,
     pub password: String,
+    pub display_name: String,
     pub access_token: Option<String>,
     pub email_verification: UserEmailVerification,
     pub relations: Option<Vec<UserRelationship>>,

src/email.rs

@@ -2,6 +2,14 @@ use reqwest::blocking::Client;
 use std::collections::HashMap;
 use std::env;
 
+fn public_uri() -> String {
+    env::var("PUBLIC_URI").expect("PUBLIC_URI not in environment variables!")
+}
+
+fn portal() -> String {
+    env::var("PORTAL_URL").expect("PORTAL_URL not in environment variables!")
+}
+
 pub fn send_email(target: String, subject: String, body: String, html: String) -> Result<(), ()> {
     let mut map = HashMap::new();
     map.insert("target", target.clone());
@@ -10,20 +18,12 @@ pub fn send_email(target: String, subject: String, body: String, html: String) -
     map.insert("html", html);
 
     let client = Client::new();
-    match client
+    match client.post(&portal()).json(&map).send() {
-        .post("http://192.168.0.26:3838/send")
-        .json(&map)
-        .send()
-    {
         Ok(_) => Ok(()),
         Err(_) => Err(()),
     }
 }
 
-fn public_uri() -> String {
-    env::var("PUBLIC_URI").expect("PUBLIC_URI not in environment variables!")
-}
-
 pub fn send_verification_email(email: String, code: String) -> bool {
     let url = format!("{}/api/account/verify/{}", public_uri(), code);
     send_email(
@@ -35,6 +35,17 @@ pub fn send_verification_email(email: String, code: String) -> bool {
     .is_ok()
 }
 
+pub fn send_password_reset(email: String, code: String) -> bool {
+    let url = format!("{}/api/account/reset/{}", public_uri(), code);
+    send_email(
+        email,
+        "Reset your password.".to_string(),
+        format!("Reset your password here: {}", url),
+        format!("<a href=\"{}\">Click to reset your password!</a>", url),
+    )
+    .is_ok()
+}
+
 pub fn send_welcome_email(email: String, username: String) -> bool {
     send_email(
         email,

src/guards/auth.rs

@@ -1,4 +1,4 @@
-use bson::{doc, from_bson, Document};
+use mongodb::bson::{doc, from_bson, Bson, Document};
 use mongodb::options::FindOneOptions;
 use rocket::http::{RawStr, Status};
 use rocket::request::{self, FromParam, FromRequest, Request};
@@ -12,6 +12,7 @@ use database::user::{User, UserRelationship};
 pub struct UserRef {
     pub id: String,
     pub username: String,
+    pub display_name: String,
     pub email_verified: bool,
 }
 
@@ -23,6 +24,7 @@ impl UserRef {
                 .projection(doc! {
                     "_id": 1,
                     "username": 1,
+                    "display_name": 1,
                     "email_verification.verified": 1,
                 })
                 .build(),
@@ -31,6 +33,7 @@ impl UserRef {
                 Some(doc) => Some(UserRef {
                     id: doc.get_str("_id").unwrap().to_string(),
                     username: doc.get_str("username").unwrap().to_string(),
+                    display_name: doc.get_str("display_name").unwrap().to_string(),
                     email_verified: doc
                         .get_document("email_verification")
                         .unwrap()
@@ -99,6 +102,7 @@ impl<'a, 'r> FromRequest<'a, 'r> for UserRef {
                             .projection(doc! {
                                 "_id": 1,
                                 "username": 1,
+                                "display_name": 1,
                                 "email_verification.verified": 1,
                             })
                             .build(),
@@ -109,6 +113,7 @@ impl<'a, 'r> FromRequest<'a, 'r> for UserRef {
                     Outcome::Success(UserRef {
                         id: user.get_str("_id").unwrap().to_string(),
                         username: user.get_str("username").unwrap().to_string(),
+                        display_name: user.get_str("display_name").unwrap().to_string(),
                         email_verified: user
                             .get_document("email_verification")
                             .unwrap()
@@ -138,7 +143,7 @@ impl<'a, 'r> FromRequest<'a, 'r> for User {
 
                 if let Some(user) = result {
                     Outcome::Success(
-                        from_bson(bson::Bson::Document(user)).expect("Failed to unwrap user."),
+                        from_bson(Bson::Document(user)).expect("Failed to unwrap user."),
                     )
                 } else {
                     Outcome::Failure((Status::Forbidden, AuthError::Invalid))

src/guards/channel.rs

@@ -1,91 +0,0 @@
-use bson::{doc, from_bson, Document};
-use mongodb::options::FindOneOptions;
-use rocket::http::RawStr;
-use rocket::request::FromParam;
-use serde::{Deserialize, Serialize};
-
-use crate::database;
-
-use database::channel::LastMessage;
-use database::message::Message;
-
-#[derive(Serialize, Deserialize, Debug, Clone)]
-pub struct ChannelRef {
-    #[serde(rename = "_id")]
-    pub id: String,
-    #[serde(rename = "type")]
-    pub channel_type: u8,
-
-    pub name: Option<String>,
-    pub last_message: Option<LastMessage>,
-
-    // information required for permission calculations
-    pub recipients: Option<Vec<String>>,
-    pub guild: Option<String>,
-    pub owner: Option<String>,
-}
-
-impl ChannelRef {
-    pub fn from(id: String) -> Option<ChannelRef> {
-        match database::get_collection("channels").find_one(
-            doc! { "_id": id },
-            FindOneOptions::builder()
-                .projection(doc! {
-                    "_id": 1,
-                    "type": 1,
-                    "name": 1,
-                    "last_message": 1,
-                    "recipients": 1,
-                    "guild": 1,
-                    "owner": 1,
-                })
-                .build(),
-        ) {
-            Ok(result) => match result {
-                Some(doc) => {
-                    Some(from_bson(bson::Bson::Document(doc)).expect("Failed to unwrap channel."))
-                }
-                None => None,
-            },
-            Err(_) => None,
-        }
-    }
-
-    pub fn fetch_data(&self, projection: Document) -> Option<Document> {
-        database::get_collection("channels")
-            .find_one(
-                doc! { "_id": &self.id },
-                FindOneOptions::builder().projection(projection).build(),
-            )
-            .expect("Failed to fetch channel from database.")
-    }
-}
-
-impl<'r> FromParam<'r> for ChannelRef {
-    type Error = &'r RawStr;
-
-    fn from_param(param: &'r RawStr) -> Result<Self, Self::Error> {
-        if let Some(channel) = ChannelRef::from(param.to_string()) {
-            Ok(channel)
-        } else {
-            Err(param)
-        }
-    }
-}
-
-impl<'r> FromParam<'r> for Message {
-    type Error = &'r RawStr;
-
-    fn from_param(param: &'r RawStr) -> Result<Self, Self::Error> {
-        let col = database::get_collection("messages");
-        let result = col
-            .find_one(doc! { "_id": param.to_string() }, None)
-            .unwrap();
-
-        if let Some(message) = result {
-            Ok(from_bson(bson::Bson::Document(message)).expect("Failed to unwrap message."))
-        } else {
-            Err(param)
-        }
-    }
-}

src/guards/guild.rs

@@ -1,4 +1,4 @@
-use bson::{doc, from_bson, Bson, Document};
+use mongodb::bson::{doc, from_bson, Bson, Document};
 use mongodb::options::FindOneOptions;
 use rocket::http::RawStr;
 use rocket::request::FromParam;
@@ -36,7 +36,7 @@ impl GuildRef {
         ) {
             Ok(result) => match result {
                 Some(doc) => {
-                    Some(from_bson(bson::Bson::Document(doc)).expect("Failed to unwrap guild."))
+                    Some(from_bson(mongodb::bson::mongodb::bson::Document(doc)).expect("Failed to unwrap guild."))
                 }
                 None => None,
             },
@@ -85,7 +85,7 @@ pub fn get_member(guild_id: &String, member: &String) -> Option<Member> {
         None,
     ) {
         if let Some(doc) = result {
-            Some(from_bson(Bson::Document(doc)).expect("Failed to unwrap member."))
+            Some(from_bson(mongodb::bson::Document(doc)).expect("Failed to unwrap member."))
         } else {
             None
         }
@@ -142,7 +142,7 @@ pub fn get_invite<U: Into<Option<String>>>(
             Some((
                 doc.get_str("_id").unwrap().to_string(),
                 doc.get_str("name").unwrap().to_string(),
-                from_bson(Bson::Document(invite.clone())).unwrap(),
+                from_bson(mongodb::bson::Document(invite.clone())).unwrap(),
             ))
         } else {
             None

src/guards/mod.rs

@@ -1,3 +1 @@
 pub mod auth;
-pub mod channel;
-pub mod guild;

src/main.rs

@@ -1,17 +1,20 @@
 #![feature(proc_macro_hygiene, decl_macro)]
+
 #[macro_use]
 extern crate rocket;
 #[macro_use]
 extern crate rocket_contrib;
 #[macro_use]
 extern crate bitfield;
+#[macro_use]
+extern crate lazy_static;
 
 pub mod database;
 pub mod email;
 pub mod guards;
+pub mod notifications;
 pub mod routes;
 pub mod util;
-pub mod websocket;
 
 use dotenv;
 use rocket_cors::AllowedOrigins;
@@ -20,9 +23,14 @@ use std::thread;
 fn main() {
     dotenv::dotenv().ok();
     database::connect();
+    notifications::start_worker();
 
     thread::spawn(|| {
-        websocket::launch_server();
+        notifications::pubsub::launch_subscriber();
+    });
+
+    thread::spawn(|| {
+        notifications::ws::launch_server();
     });
 
     let cors = rocket_cors::CorsOptions {

src/notifications/events/groups.rs

@@ -0,0 +1,13 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct UserJoin {
+    pub id: String,
+    pub user: String,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct UserLeave {
+    pub id: String,
+    pub user: String,
+}

src/notifications/events/guilds.rs

@@ -0,0 +1,33 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct UserJoin {
+    pub id: String,
+    pub user: String,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct UserLeave {
+    pub id: String,
+    pub user: String,
+    pub banned: bool,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct ChannelCreate {
+    pub id: String,
+    pub channel: String,
+    pub name: String,
+    pub description: String,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct ChannelDelete {
+    pub id: String,
+    pub channel: String,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct Delete {
+    pub id: String,
+}

src/notifications/events/message.rs

@@ -0,0 +1,23 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct Create {
+    pub id: String,
+    pub nonce: Option<String>,
+    pub channel: String,
+    pub author: String,
+    pub content: String,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct Edit {
+    pub id: String,
+    pub channel: String,
+    pub author: String,
+    pub content: String,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct Delete {
+    pub id: String,
+}

src/notifications/events/mod.rs

@@ -0,0 +1,41 @@
+use serde::{Deserialize, Serialize};
+use serde_json::{json, Value};
+
+pub mod groups;
+pub mod guilds;
+pub mod message;
+pub mod users;
+
+#[allow(non_camel_case_types)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub enum Notification {
+    message_create(message::Create),
+    message_edit(message::Edit),
+    message_delete(message::Delete),
+    group_user_join(groups::UserJoin),
+    group_user_leave(groups::UserLeave),
+    guild_user_join(guilds::UserJoin),
+    guild_user_leave(guilds::UserLeave),
+    guild_channel_create(guilds::ChannelCreate),
+    guild_channel_delete(guilds::ChannelDelete),
+    guild_delete(guilds::Delete),
+    user_friend_status(users::FriendStatus),
+}
+
+impl Notification {
+    pub fn serialize(self) -> String {
+        if let Value::Object(obj) = json!(self) {
+            let (key, value) = obj.iter().next().unwrap();
+
+            if let Value::Object(data) = value {
+                let mut data = data.clone();
+                data.insert("type".to_string(), Value::String(key.to_string()));
+                json!(data).to_string()
+            } else {
+                unreachable!()
+            }
+        } else {
+            unreachable!()
+        }
+    }
+}

src/notifications/events/users.rs

@@ -0,0 +1,7 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct FriendStatus {
+    pub id: String,
+    pub status: i32,
+}

src/notifications/mod.rs

@@ -0,0 +1,74 @@
+use crate::database::channel::Channel;
+
+use once_cell::sync::OnceCell;
+use std::sync::mpsc::{channel, Sender};
+use std::thread;
+
+pub mod events;
+pub mod pubsub;
+pub mod state;
+pub mod ws;
+
+pub fn send_message<U: Into<Option<Vec<String>>>, G: Into<Option<String>>>(
+    users: U,
+    guild: G,
+    data: events::Notification,
+) -> bool {
+    let users = users.into();
+    let guild = guild.into();
+
+    if pubsub::send_message(users.clone(), guild.clone(), data.clone()) {
+        state::send_message(users, guild, data.serialize());
+
+        true
+    } else {
+        false
+    }
+}
+
+struct NotificationArguments {
+    users: Option<Vec<String>>,
+    guild: Option<String>,
+    data: events::Notification,
+}
+
+static mut SENDER: OnceCell<Sender<NotificationArguments>> = OnceCell::new();
+
+pub fn start_worker() {
+    let (sender, receiver) = channel();
+    unsafe {
+        SENDER.set(sender).unwrap();
+    }
+
+    thread::spawn(move || {
+        while let Ok(data) = receiver.recv() {
+            send_message(data.users, data.guild, data.data);
+        }
+    });
+}
+
+pub fn send_message_threaded<U: Into<Option<Vec<String>>>, G: Into<Option<String>>>(
+    users: U,
+    guild: G,
+    data: events::Notification,
+) -> bool {
+    unsafe {
+        SENDER
+            .get()
+            .unwrap()
+            .send(NotificationArguments {
+                users: users.into(),
+                guild: guild.into(),
+                data,
+            })
+            .is_ok()
+    }
+}
+
+pub fn send_message_given_channel(data: events::Notification, channel: &Channel) {
+    match channel.channel_type {
+        0..=1 => send_message_threaded(channel.recipients.clone(), None, data),
+        2 => send_message_threaded(None, channel.guild.clone(), data),
+        _ => unreachable!(),
+    };
+}

src/notifications/pubsub.rs

@@ -0,0 +1,102 @@
+use super::events::Notification;
+use crate::database::get_collection;
+
+use mongodb::bson::{doc, from_bson, to_bson, Bson};
+use mongodb::options::{CursorType, FindOneOptions, FindOptions};
+use serde::{Deserialize, Serialize};
+use std::time::Duration;
+use ulid::Ulid;
+
+use once_cell::sync::OnceCell;
+static SOURCEID: OnceCell<String> = OnceCell::new();
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct PubSubMessage {
+    #[serde(rename = "_id")]
+    id: String,
+    source: String,
+
+    user_recipients: Option<Vec<String>>,
+    target_guild: Option<String>,
+    data: Notification,
+}
+
+pub fn send_message(users: Option<Vec<String>>, guild: Option<String>, data: Notification) -> bool {
+    let message = PubSubMessage {
+        id: Ulid::new().to_string(),
+        source: SOURCEID.get().unwrap().to_string(),
+        user_recipients: users.into(),
+        target_guild: guild.into(),
+        data,
+    };
+
+    if get_collection("pubsub")
+        .insert_one(
+            to_bson(&message)
+                .expect("Failed to serialize pubsub message.")
+                .as_document()
+                .expect("Failed to convert to a document.")
+                .clone(),
+            None,
+        )
+        .is_ok()
+    {
+        true
+    } else {
+        false
+    }
+}
+
+pub fn launch_subscriber() {
+    let source = Ulid::new().to_string();
+    SOURCEID
+        .set(source.clone())
+        .expect("Failed to create and set source ID.");
+
+    let pubsub = get_collection("pubsub");
+    if let Ok(result) = pubsub.find_one(
+        doc! {},
+        FindOneOptions::builder().sort(doc! { "_id": -1 }).build(),
+    ) {
+        let query = if let Some(doc) = result {
+            doc! { "_id": { "$gt": doc.get_str("_id").unwrap() } }
+        } else {
+            doc! {}
+        };
+
+        if let Ok(mut cursor) = pubsub.find(
+            query,
+            FindOptions::builder()
+                .cursor_type(CursorType::TailableAwait)
+                .no_cursor_timeout(true)
+                .max_await_time(Duration::from_secs(1200))
+                .build(),
+        ) {
+            loop {
+                while let Some(item) = cursor.next() {
+                    if let Ok(doc) = item {
+                        if let Ok(message) =
+                            from_bson(Bson::Document(doc)) as Result<PubSubMessage, _>
+                        {
+                            if &message.source != &source {
+                                super::state::send_message(
+                                    message.user_recipients,
+                                    message.target_guild,
+                                    message.data.serialize(),
+                                );
+                            }
+                        } else {
+                            eprintln!("Failed to deserialize pubsub message.");
+                        }
+                    } else {
+                        eprintln!("Failed to unwrap a document from pubsub.");
+                    }
+                }
+            }
+        } else {
+            eprintln!("Failed to open subscriber cursor.");
+        }
+    } else {
+        eprintln!("Failed to fetch latest document from pubsub collection.");
+    }
+}

src/notifications/state.rs

@@ -0,0 +1,205 @@
+use crate::database;
+use crate::util::vec_to_set;
+
+use hashbrown::{HashMap, HashSet};
+use mongodb::bson::doc;
+use mongodb::options::FindOneOptions;
+use once_cell::sync::OnceCell;
+use std::sync::RwLock;
+use ws::Sender;
+
+pub enum StateResult {
+    DatabaseError,
+    InvalidToken,
+    Success(String),
+}
+
+static mut CONNECTIONS: OnceCell<RwLock<HashMap<String, Sender>>> = OnceCell::new();
+
+pub fn add_connection(id: String, sender: Sender) {
+    unsafe {
+        CONNECTIONS
+            .get()
+            .unwrap()
+            .write()
+            .unwrap()
+            .insert(id, sender);
+    }
+}
+
+pub struct User {
+    connections: HashSet<String>,
+    guilds: HashSet<String>,
+}
+
+impl User {
+    pub fn new() -> User {
+        User {
+            connections: HashSet::new(),
+            guilds: HashSet::new(),
+        }
+    }
+}
+
+pub struct Guild {
+    users: HashSet<String>,
+}
+
+impl Guild {
+    pub fn new() -> Guild {
+        Guild {
+            users: HashSet::new(),
+        }
+    }
+}
+
+pub struct GlobalState {
+    users: HashMap<String, User>,
+    guilds: HashMap<String, Guild>,
+}
+
+impl GlobalState {
+    pub fn new() -> GlobalState {
+        GlobalState {
+            users: HashMap::new(),
+            guilds: HashMap::new(),
+        }
+    }
+
+    pub fn push_to_guild(&mut self, guild: String, user: String) {
+        if !self.guilds.contains_key(&guild) {
+            self.guilds.insert(guild.clone(), Guild::new());
+        }
+
+        self.guilds.get_mut(&guild).unwrap().users.insert(user);
+    }
+
+    pub fn try_authenticate(&mut self, connection: String, access_token: String) -> StateResult {
+        if let Ok(result) = database::get_collection("users").find_one(
+            doc! {
+                "access_token": access_token,
+            },
+            FindOneOptions::builder()
+                .projection(doc! { "_id": 1 })
+                .build(),
+        ) {
+            if let Some(user) = result {
+                let user_id = user.get_str("_id").unwrap();
+
+                if self.users.contains_key(user_id) {
+                    self.users
+                        .get_mut(user_id)
+                        .unwrap()
+                        .connections
+                        .insert(connection);
+
+                    return StateResult::Success(user_id.to_string());
+                }
+
+                if let Ok(results) =
+                    database::get_collection("members").find(doc! { "_id.user": &user_id }, None)
+                {
+                    let mut guilds = vec![];
+                    for result in results {
+                        if let Ok(entry) = result {
+                            guilds.push(
+                                entry
+                                    .get_document("_id")
+                                    .unwrap()
+                                    .get_str("guild")
+                                    .unwrap()
+                                    .to_string(),
+                            );
+                        }
+                    }
+
+                    let mut user = User::new();
+                    for guild in guilds {
+                        user.guilds.insert(guild.clone());
+                        self.push_to_guild(guild, user_id.to_string());
+                    }
+
+                    user.connections.insert(connection);
+                    self.users.insert(user_id.to_string(), user);
+
+                    StateResult::Success(user_id.to_string())
+                } else {
+                    StateResult::DatabaseError
+                }
+            } else {
+                StateResult::InvalidToken
+            }
+        } else {
+            StateResult::DatabaseError
+        }
+    }
+
+    pub fn disconnect<U: Into<Option<String>>>(&mut self, user_id: U, connection: String) {
+        if let Some(user_id) = user_id.into() {
+            let user = self.users.get_mut(&user_id).unwrap();
+            user.connections.remove(&connection);
+
+            if user.connections.len() == 0 {
+                for guild in &user.guilds {
+                    self.guilds.get_mut(guild).unwrap().users.remove(&user_id);
+                }
+
+                self.users.remove(&user_id);
+            }
+        }
+
+        unsafe {
+            CONNECTIONS
+                .get()
+                .unwrap()
+                .write()
+                .unwrap()
+                .remove(&connection);
+        }
+    }
+}
+
+pub static mut DATA: OnceCell<RwLock<GlobalState>> = OnceCell::new();
+
+pub fn init() {
+    unsafe {
+        if CONNECTIONS.set(RwLock::new(HashMap::new())).is_err() {
+            panic!("Failed to set global connections map.");
+        }
+
+        if DATA.set(RwLock::new(GlobalState::new())).is_err() {
+            panic!("Failed to set global state.");
+        }
+    }
+}
+
+pub fn send_message(users: Option<Vec<String>>, guild: Option<String>, data: String) {
+    let state = unsafe { DATA.get().unwrap().read().unwrap() };
+    let mut connections = HashSet::new();
+
+    let mut users = vec_to_set(&users.unwrap_or(vec![]));
+    if let Some(guild) = guild {
+        if let Some(entry) = state.guilds.get(&guild) {
+            for user in &entry.users {
+                users.insert(user.to_string());
+            }
+        }
+    }
+
+    for user in users {
+        if let Some(entry) = state.users.get(&user) {
+            for connection in &entry.connections {
+                connections.insert(connection.clone());
+            }
+        }
+    }
+
+    let targets = unsafe { CONNECTIONS.get().unwrap().read().unwrap() };
+    for conn in connections {
+        if let Some(sender) = targets.get(&conn) {
+            if sender.send(data.clone()).is_err() {
+                eprintln!("Failed to send a notification to a websocket. [{}]", &conn);
+            }
+        }
+    }
+}

src/notifications/ws.rs

@@ -0,0 +1,119 @@
+use super::state::{self, StateResult};
+
+use serde_json::{from_str, json, Value};
+use std::env;
+use ulid::Ulid;
+use ws::{listen, CloseCode, Error, Handler, Handshake, Message, Result, Sender};
+
+struct Server {
+    sender: Sender,
+    user_id: Option<String>,
+    id: String,
+}
+
+impl Handler for Server {
+    fn on_open(&mut self, _: Handshake) -> Result<()> {
+        state::add_connection(self.id.clone(), self.sender.clone());
+        Ok(())
+    }
+
+    fn on_message(&mut self, msg: Message) -> Result<()> {
+        if let Message::Text(text) = msg {
+            if let Ok(data) = from_str(&text) as std::result::Result<Value, _> {
+                if let Value::String(packet_type) = &data["type"] {
+                    if packet_type == "authenticate" {
+                        if self.user_id.is_some() {
+                            self.sender.send(
+                                json!({
+                                    "type": "authenticate",
+                                    "success": false,
+                                    "error": "Already authenticated!"
+                                })
+                                .to_string(),
+                            )
+                        } else if let Value::String(token) = &data["token"] {
+                            let mut state = unsafe { state::DATA.get().unwrap().write().unwrap() };
+
+                            match state.try_authenticate(self.id.clone(), token.to_string()) {
+                                StateResult::Success(user_id) => {
+                                    self.user_id = Some(user_id);
+                                    self.sender.send(
+                                        json!({
+                                            "type": "authenticate",
+                                            "success": true,
+                                        })
+                                        .to_string(),
+                                    )
+                                }
+                                StateResult::DatabaseError => self.sender.send(
+                                    json!({
+                                        "type": "authenticate",
+                                        "success": false,
+                                        "error": "Had database error."
+                                    })
+                                    .to_string(),
+                                ),
+                                StateResult::InvalidToken => self.sender.send(
+                                    json!({
+                                        "type": "authenticate",
+                                        "success": false,
+                                        "error": "Invalid token."
+                                    })
+                                    .to_string(),
+                                ),
+                            }
+                        } else {
+                            self.sender.send(
+                                json!({
+                                    "type": "authenticate",
+                                    "success": false,
+                                    "error": "Token not present."
+                                })
+                                .to_string(),
+                            )
+                        }
+                    } else {
+                        Ok(())
+                    }
+                } else {
+                    Ok(())
+                }
+            } else {
+                Ok(())
+            }
+        } else {
+            Ok(())
+        }
+    }
+
+    fn on_close(&mut self, _code: CloseCode, _reason: &str) {
+        unsafe {
+            state::DATA
+                .get()
+                .unwrap()
+                .write()
+                .unwrap()
+                .disconnect(self.user_id.clone(), self.id.clone());
+        }
+
+        println!("User disconnected. [{}]", self.id);
+    }
+
+    fn on_error(&mut self, err: Error) {
+        println!("The server encountered an error: {:?}", err);
+    }
+}
+
+pub fn launch_server() {
+    state::init();
+
+    listen(
+        env::var("WS_HOST").unwrap_or("0.0.0.0:9999".to_string()),
+        |sender| Server {
+            sender,
+            user_id: None,
+            id: Ulid::new().to_string(),
+        },
+    )
+    .unwrap()
+}

src/routes/account.rs

@@ -4,9 +4,9 @@ use crate::email;
 use crate::util::gen_token;
 
 use bcrypt::{hash, verify};
-use bson::{doc, from_bson, Bson::UtcDatetime};
 use chrono::prelude::*;
 use database::user::User;
+use mongodb::bson::{doc, from_bson, Bson};
 use rocket_contrib::json::Json;
 use serde::{Deserialize, Serialize};
 use ulid::Ulid;
@@ -53,6 +53,13 @@ pub fn create(info: Json<Create>) -> Response {
         return Response::Conflict(json!({ "error": "Email already in use!" }));
     }
 
+    if let Some(_) = col
+        .find_one(doc! { "username": info.username.clone() }, None)
+        .expect("Failed user lookup")
+    {
+        return Response::Conflict(json!({ "error": "Username already in use!" }));
+    }
+
     if let Ok(hashed) = hash(info.password.clone(), 10) {
         let access_token = gen_token(92);
         let code = gen_token(48);
@@ -62,13 +69,14 @@ pub fn create(info: Json<Create>) -> Response {
                 "_id": Ulid::new().to_string(),
                 "email": info.email.clone(),
                 "username": info.username.clone(),
+                "display_name": info.username.clone(),
                 "password": hashed,
                 "access_token": access_token,
                 "email_verification": {
                     "verified": false,
                     "target": info.email.clone(),
-                    "expiry": UtcDatetime(Utc::now() + chrono::Duration::days(1)),
+                    "expiry": Bson::DateTime(Utc::now() + chrono::Duration::days(1)),
-                    "rate_limit": UtcDatetime(Utc::now() + chrono::Duration::minutes(1)),
+                    "rate_limit": Bson::DateTime(Utc::now() + chrono::Duration::minutes(1)),
                     "code": code.clone(),
                 }
             },
@@ -78,7 +86,6 @@ pub fn create(info: Json<Create>) -> Response {
                 let sent = email::send_verification_email(info.email.clone(), code);
 
                 Response::Success(json!({
-                    "success": true,
                     "email_sent": sent,
                 }))
             }
@@ -103,7 +110,7 @@ pub fn verify_email(code: String) -> Response {
         .find_one(doc! { "email_verification.code": code.clone() }, None)
         .expect("Failed user lookup")
     {
-        let user: User = from_bson(bson::Bson::Document(u)).expect("Failed to unwrap user.");
+        let user: User = from_bson(Bson::Document(u)).expect("Failed to unwrap user.");
         let ev = user.email_verification;
 
         if Utc::now() > *ev.expiry.unwrap() {
@@ -133,9 +140,7 @@ pub fn verify_email(code: String) -> Response {
 
             email::send_welcome_email(target.to_string(), user.username);
 
-            Response::Redirect(
+            Response::Redirect(super::Redirect::to("https://app.revolt.chat"))
-                super::Redirect::to("https://example.com"), // ! FIXME; redirect to landing page
-            )
         }
     } else {
         Response::BadRequest(json!({ "error": "Invalid code." }))
@@ -162,7 +167,7 @@ pub fn resend_email(info: Json<Resend>) -> Response {
         )
         .expect("Failed user lookup.")
     {
-        let user: User = from_bson(bson::Bson::Document(u)).expect("Failed to unwrap user.");
+        let user: User = from_bson(Bson::Document(u)).expect("Failed to unwrap user.");
         let ev = user.email_verification;
 
         let expiry = ev.expiry.unwrap();
@@ -173,7 +178,7 @@ pub fn resend_email(info: Json<Resend>) -> Response {
                 json!({ "error": "You are being rate limited, please try again in a while." }),
             )
         } else {
-            let mut new_expiry = UtcDatetime(Utc::now() + chrono::Duration::days(1));
+            let mut new_expiry = Bson::DateTime(Utc::now() + chrono::Duration::days(1));
             if info.email.clone() != user.email {
                 if Utc::now() > *expiry {
                     return Response::Gone(
@@ -181,7 +186,7 @@ pub fn resend_email(info: Json<Resend>) -> Response {
                     );
                 }
 
-                new_expiry = UtcDatetime(*expiry);
+                new_expiry = Bson::DateTime(*expiry);
             }
 
             let code = gen_token(48);
@@ -191,7 +196,7 @@ pub fn resend_email(info: Json<Resend>) -> Response {
 						"$set": {
 							"email_verification.code": code.clone(),
 							"email_verification.expiry": new_expiry,
-							"email_verification.rate_limit": UtcDatetime(Utc::now() + chrono::Duration::minutes(1)),
+							"email_verification.rate_limit": Bson::DateTime(Utc::now() + chrono::Duration::minutes(1)),
 						},
 					},
 					None,
@@ -200,14 +205,12 @@ pub fn resend_email(info: Json<Resend>) -> Response {
             match email::send_verification_email(info.email.to_string(), code) {
                 true => Response::Result(super::Status::Ok),
                 false => Response::InternalServerError(
-                    json!({ "success": false, "error": "Failed to send email! Likely an issue with the backend API." }),
+                    json!({ "error": "Failed to send email! Likely an issue with the backend API." }),
                 ),
             }
         }
     } else {
-        Response::NotFound(
+        Response::NotFound(json!({ "error": "Email not found or pending verification!" }))
-            json!({ "success": false, "error": "Email not found or pending verification!" }),
-        )
     }
 }
 
@@ -229,7 +232,7 @@ pub fn login(info: Json<Login>) -> Response {
         .find_one(doc! { "email": info.email.clone() }, None)
         .expect("Failed user lookup")
     {
-        let user: User = from_bson(bson::Bson::Document(u)).expect("Failed to unwrap user.");
+        let user: User = from_bson(Bson::Document(u)).expect("Failed to unwrap user.");
 
         match verify(info.password.clone(), &user.password)
             .expect("Failed to check hash of password.")
@@ -291,3 +294,24 @@ pub fn token(info: Json<Token>) -> Response {
         }))
     }
 }
+
+#[options("/create")]
+pub fn create_preflight() -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/verify/<_code>")]
+pub fn verify_email_preflight(_code: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/resend")]
+pub fn resend_email_preflight() -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/login")]
+pub fn login_preflight() -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/token")]
+pub fn token_preflight() -> Response {
+    Response::Result(super::Status::Ok)
+}

src/routes/channel.rs

@@ -1,16 +1,20 @@
 use super::Response;
 use crate::database::{
-    self, get_relationship, get_relationship_internal, message::Message, Permission,
+    self, channel::Channel, get_relationship, get_relationship_internal, message::Message,
-    PermissionCalculator, Relationship,
+    Permission, PermissionCalculator, Relationship,
 };
 use crate::guards::auth::UserRef;
-use crate::guards::channel::ChannelRef;
+use crate::notifications::{
+    self,
+    events::{groups::*, guilds::ChannelDelete, message::*, Notification},
+};
 use crate::util::vec_to_set;
 
-use bson::{doc, from_bson, Bson, Bson::UtcDatetime};
 use chrono::prelude::*;
+use mongodb::bson::{doc, from_bson, Bson};
 use mongodb::options::FindOptions;
 use num_enum::TryFromPrimitive;
+use rocket::request::Form;
 use rocket_contrib::json::Json;
 use serde::{Deserialize, Serialize};
 use ulid::Ulid;
@@ -125,7 +129,7 @@ pub fn create_group(user: UserRef, info: Json<CreateGroup>) -> Response {
 
 /// fetch channel information
 #[get("/<target>")]
-pub fn channel(user: UserRef, target: ChannelRef) -> Option<Response> {
+pub fn channel(user: UserRef, target: Channel) -> Option<Response> {
     with_permissions!(user, target);
 
     match target.channel_type {
@@ -136,39 +140,39 @@ pub fn channel(user: UserRef, target: ChannelRef) -> Option<Response> {
             "recipients": target.recipients,
         }))),
         1 => {
-            if let Some(info) = target.fetch_data(doc! {
+            /*if let Some(info) = target.fetch_data(doc! {
                 "name": 1,
                 "description": 1,
                 "owner": 1,
-            }) {
+            }) {*/
-                Some(Response::Success(json!({
+            Some(Response::Success(json!({
-                    "id": target.id,
+                "id": target.id,
-                    "type": target.channel_type,
+                "type": target.channel_type,
-                    "last_message": target.last_message,
+                "last_message": target.last_message,
-                    "recipients": target.recipients,
+                "recipients": target.recipients,
-                    "name": info.get_str("name").unwrap(),
+                "name": target.name,
-                    "owner": info.get_str("owner").unwrap(),
+                "owner": target.owner,
-                    "description": info.get_str("description").unwrap_or(""),
+                "description": target.description,
-                })))
+            })))
-            } else {
+            /*} else {
                 None
-            }
+            }*/
         }
         2 => {
-            if let Some(info) = target.fetch_data(doc! {
+            /*if let Some(info) = target.fetch_data(doc! {
                 "name": 1,
                 "description": 1,
-            }) {
+            }) {*/
-                Some(Response::Success(json!({
+            Some(Response::Success(json!({
-                    "id": target.id,
+                "id": target.id,
-                    "type": target.channel_type,
+                "type": target.channel_type,
-                    "guild": target.guild,
+                "guild": target.guild,
-                    "name": info.get_str("name").unwrap(),
+                "name": target.name,
-                    "description": info.get_str("description").unwrap_or(""),
+                "description": target.description,
-                })))
+            })))
-            } else {
+            /*} else {
                 None
-            }
+            }*/
         }
         _ => unreachable!(),
     }
@@ -176,14 +180,14 @@ pub fn channel(user: UserRef, target: ChannelRef) -> Option<Response> {
 
 /// [groups] add user to channel
 #[put("/<target>/recipients/<member>")]
-pub fn add_member(user: UserRef, target: ChannelRef, member: UserRef) -> Option<Response> {
+pub fn add_member(user: UserRef, target: Channel, member: UserRef) -> Option<Response> {
     if target.channel_type != 1 {
         return Some(Response::BadRequest(json!({ "error": "Not a group DM." })));
     }
 
     with_permissions!(user, target);
 
-    let recp = target.recipients.unwrap();
+    let recp = target.recipients.as_ref().unwrap();
     if recp.len() == 50 {
         return Some(Response::BadRequest(
             json!({ "error": "Maximum group size is 50." }),
@@ -201,7 +205,7 @@ pub fn add_member(user: UserRef, target: ChannelRef, member: UserRef) -> Option<
         Relationship::Friend => {
             if database::get_collection("channels")
                 .update_one(
-                    doc! { "_id": &target.id },
+                    doc! { "_id": target.id.clone() },
                     doc! {
                         "$push": {
                             "recipients": &member.id
@@ -211,7 +215,31 @@ pub fn add_member(user: UserRef, target: ChannelRef, member: UserRef) -> Option<
                 )
                 .is_ok()
             {
-                Some(Response::Result(super::Status::Ok))
+                if (Message {
+                    id: Ulid::new().to_string(),
+                    nonce: None,
+                    channel: target.id.clone(),
+                    author: "system".to_string(),
+                    content: format!("<@{}> added <@{}> to the group.", &user.id, &member.id),
+                    edited: None,
+                    previous_content: vec![],
+                })
+                .send(&target)
+                {
+                    notifications::send_message_given_channel(
+                        Notification::group_user_join(UserJoin {
+                            id: target.id.clone(),
+                            user: member.id.clone(),
+                        }),
+                        &target,
+                    );
+
+                    Some(Response::Result(super::Status::Ok))
+                } else {
+                    Some(Response::PartialStatus(
+                        json!({ "error": "Failed to send join message, but user has been added." }),
+                    ))
+                }
             } else {
                 Some(Response::InternalServerError(
                     json!({ "error": "Failed to add user to group." }),
@@ -226,7 +254,7 @@ pub fn add_member(user: UserRef, target: ChannelRef, member: UserRef) -> Option<
 
 /// [groups] remove user from channel
 #[delete("/<target>/recipients/<member>")]
-pub fn remove_member(user: UserRef, target: ChannelRef, member: UserRef) -> Option<Response> {
+pub fn remove_member(user: UserRef, target: Channel, member: UserRef) -> Option<Response> {
     if target.channel_type != 1 {
         return Some(Response::BadRequest(json!({ "error": "Not a group DM." })));
     }
@@ -243,7 +271,7 @@ pub fn remove_member(user: UserRef, target: ChannelRef, member: UserRef) -> Opti
         return Some(Response::LackingPermission(Permission::KickMembers));
     }
 
-    let set = vec_to_set(&target.recipients.unwrap());
+    let set = vec_to_set(target.recipients.as_ref().unwrap());
     if set.get(&member.id).is_none() {
         return Some(Response::BadRequest(
             json!({ "error": "User not in group!" }),
@@ -262,7 +290,31 @@ pub fn remove_member(user: UserRef, target: ChannelRef, member: UserRef) -> Opti
         )
         .is_ok()
     {
-        Some(Response::Result(super::Status::Ok))
+        if (Message {
+            id: Ulid::new().to_string(),
+            nonce: None,
+            channel: target.id.clone(),
+            author: "system".to_string(),
+            content: format!("<@{}> removed <@{}> from the group.", &user.id, &member.id),
+            edited: None,
+            previous_content: vec![],
+        })
+        .send(&target)
+        {
+            notifications::send_message_given_channel(
+                Notification::group_user_leave(UserLeave {
+                    id: target.id.clone(),
+                    user: member.id.clone(),
+                }),
+                &target,
+            );
+
+            Some(Response::Result(super::Status::Ok))
+        } else {
+            Some(Response::PartialStatus(
+                json!({ "error": "Failed to send join message, but user has been removed." }),
+            ))
+        }
     } else {
         Some(Response::InternalServerError(
             json!({ "error": "Failed to add user to group." }),
@@ -274,7 +326,7 @@ pub fn remove_member(user: UserRef, target: ChannelRef, member: UserRef) -> Opti
 /// or leave group DM
 /// or close DM conversation
 #[delete("/<target>")]
-pub fn delete(user: UserRef, target: ChannelRef) -> Option<Response> {
+pub fn delete(user: UserRef, target: Channel) -> Option<Response> {
     let permissions = with_permissions!(user, target);
 
     if !permissions.get_manage_channels() {
@@ -295,7 +347,7 @@ pub fn delete(user: UserRef, target: ChannelRef) -> Option<Response> {
                 Some(Response::Result(super::Status::Ok))
             } else {
                 Some(Response::InternalServerError(
-                    json!({ "error": "Failed to delete group." }),
+                    json!({ "error": "Failed to delete channel." }),
                 ))
             }
         } else {
@@ -323,15 +375,19 @@ pub fn delete(user: UserRef, target: ChannelRef) -> Option<Response> {
             }
         }
         1 => {
-            let mut recipients =
+            let mut recipients = vec_to_set(
-                vec_to_set(&target.recipients.expect("Missing recipients on Group DM."));
+                target
-            let owner = target.owner.expect("Missing owner on Group DM.");
+                    .recipients
+                    .as_ref()
+                    .expect("Missing recipients on Group DM."),
+            );
+            let owner = target.owner.as_ref().expect("Missing owner on Group DM.");
 
             if recipients.len() == 1 {
                 try_delete()
             } else {
                 recipients.remove(&user.id);
-                let new_owner = if owner == user.id {
+                let new_owner = if owner == &user.id {
                     recipients.iter().next().unwrap()
                 } else {
                     &owner
@@ -352,7 +408,31 @@ pub fn delete(user: UserRef, target: ChannelRef) -> Option<Response> {
                     )
                     .is_ok()
                 {
-                    Some(Response::Result(super::Status::Ok))
+                    if (Message {
+                        id: Ulid::new().to_string(),
+                        nonce: None,
+                        channel: target.id.clone(),
+                        author: "system".to_string(),
+                        content: format!("<@{}> left the group.", &user.id),
+                        edited: None,
+                        previous_content: vec![],
+                    })
+                    .send(&target)
+                    {
+                        notifications::send_message_given_channel(
+                            Notification::group_user_leave(UserLeave {
+                                id: target.id.clone(),
+                                user: user.id.clone(),
+                            }),
+                            &target,
+                        );
+
+                        Some(Response::Result(super::Status::Ok))
+                    } else {
+                        Some(Response::PartialStatus(
+                            json!({ "error": "Failed to send leave message, but you have left the group." }),
+                        ))
+                    }
                 } else {
                     Some(Response::InternalServerError(
                         json!({ "error": "Failed to remove you from the group." }),
@@ -361,9 +441,10 @@ pub fn delete(user: UserRef, target: ChannelRef) -> Option<Response> {
             }
         }
         2 => {
+            let guild_id = target.guild.unwrap();
             if database::get_collection("guilds")
                 .update_one(
-                    doc! { "_id": target.guild.unwrap() },
+                    doc! { "_id": &guild_id },
                     doc! {
                         "$pull": {
                             "invites": {
@@ -375,6 +456,15 @@ pub fn delete(user: UserRef, target: ChannelRef) -> Option<Response> {
                 )
                 .is_ok()
             {
+                notifications::send_message_threaded(
+                    None,
+                    guild_id.clone(),
+                    Notification::guild_channel_delete(ChannelDelete {
+                        id: guild_id.clone(),
+                        channel: target.id.clone(),
+                    }),
+                );
+
                 try_delete()
             } else {
                 Some(Response::InternalServerError(
@@ -388,22 +478,60 @@ pub fn delete(user: UserRef, target: ChannelRef) -> Option<Response> {
     }
 }
 
+#[derive(Serialize, Deserialize, FromForm)]
+pub struct MessageFetchOptions {
+    limit: Option<i64>,
+    before: Option<String>,
+    after: Option<String>,
+}
+
 /// fetch channel messages
-#[get("/<target>/messages")]
+#[get("/<target>/messages?<options..>")]
-pub fn messages(user: UserRef, target: ChannelRef) -> Option<Response> {
+pub fn messages(
+    user: UserRef,
+    target: Channel,
+    options: Form<MessageFetchOptions>,
+) -> Option<Response> {
     let permissions = with_permissions!(user, target);
 
     if !permissions.get_read_messages() {
         return Some(Response::LackingPermission(Permission::ReadMessages));
     }
 
+    // ! FIXME: update wiki to reflect changes
+    let mut query = doc! { "channel": target.id };
+
+    if let Some(before) = &options.before {
+        query.insert("_id", doc! { "$lt": before });
+    }
+
+    if let Some(after) = &options.after {
+        query.insert("_id", doc! { "$gt": after });
+    }
+
+    let limit = if let Some(limit) = options.limit {
+        limit.min(100).max(0)
+    } else {
+        50
+    };
+
     let col = database::get_collection("messages");
-    let result = col.find(doc! { "channel": target.id }, None).unwrap();
+    let result = col
+        .find(
+            query,
+            FindOptions::builder()
+                .limit(limit)
+                .sort(doc! {
+                    "_id": -1
+                })
+                .build(),
+        )
+        .unwrap();
 
     let mut messages = Vec::new();
     for item in result {
         let message: Message =
-            from_bson(bson::Bson::Document(item.unwrap())).expect("Failed to unwrap message.");
+            from_bson(Bson::Document(item.unwrap())).expect("Failed to unwrap message.");
         messages.push(json!({
             "id": message.id,
             "author": message.author,
@@ -425,7 +553,7 @@ pub struct SendMessage {
 #[post("/<target>/messages", data = "<message>")]
 pub fn send_message(
     user: UserRef,
-    target: ChannelRef,
+    target: Channel,
     message: Json<SendMessage>,
 ) -> Option<Response> {
     let permissions = with_permissions!(user, target);
@@ -441,6 +569,12 @@ pub fn send_message(
     let content: String = message.content.chars().take(2000).collect();
     let nonce: String = message.nonce.chars().take(32).collect();
 
+    if content.len() == 0 {
+        return Some(Response::NotAcceptable(
+            json!({ "error": "No message content!" }),
+        ));
+    }
+
     let col = database::get_collection("messages");
     if col
         .find_one(doc! { "nonce": nonce.clone() }, None)
@@ -453,109 +587,49 @@ pub fn send_message(
     }
 
     let id = Ulid::new().to_string();
-    Some(
+    let message = Message {
-        if col
+        id: id.clone(),
-            .insert_one(
+        nonce: Some(nonce),
-                doc! {
+        channel: target.id.clone(),
-                    "_id": &id,
+        author: user.id,
-                    "nonce": nonce,
+        content,
-                    "channel": &target.id,
+        edited: None,
-                    "author": &user.id,
+        previous_content: vec![],
-                    "content": &content,
+    };
-                },
-                None,
-            )
-            .is_ok()
-        {
-            let short_content: String = content.chars().take(24).collect();
-            let col = database::get_collection("channels");
 
-            // !! this stuff can be async
+    if message.send(&target) {
-            if target.channel_type == ChannelType::DM as u8
+        Some(Response::Success(json!({ "id": id })))
-                || target.channel_type == ChannelType::GROUPDM as u8
+    } else {
-            {
+        Some(Response::BadRequest(
-                let mut update = doc! {
+            json!({ "error": "Failed to send message." }),
-                    "$set": {
+        ))
-                        "last_message": {
+    }
-                            "id": &id,
-                            "user_id": &user.id,
-                            "short_content": short_content,
-                        }
-                    }
-                };
-
-                if target.channel_type == ChannelType::DM as u8 {
-                    update
-                        .get_document_mut("$set")
-                        .unwrap()
-                        .insert("active", true);
-                }
-
-                if col
-                    .update_one(doc! { "_id": &target.id }, update, None)
-                    .is_ok()
-                {
-                    Response::Success(json!({ "id": id }))
-                } else {
-                    Response::InternalServerError(json!({ "error": "Failed to update channel." }))
-                }
-            } else {
-                Response::Success(json!({ "id": id }))
-            }
-
-        /*websocket::queue_message(
-            get_recipients(&target),
-            json!({
-                "type": "message",
-                "data": {
-                    "id": id.clone(),
-                    "nonce": nonce,
-                    "channel": target.id,
-                    "author": user.id,
-                    "content": content,
-                },
-            })
-            .to_string(),
-        );*/
-        } else {
-            Response::InternalServerError(json!({
-                "error": "Failed database query."
-            }))
-        },
-    )
 }
 
 /// get a message
 #[get("/<target>/messages/<message>")]
-pub fn get_message(user: UserRef, target: ChannelRef, message: Message) -> Option<Response> {
+pub fn get_message(user: UserRef, target: Channel, message: Message) -> Option<Response> {
     let permissions = with_permissions!(user, target);
 
     if !permissions.get_read_messages() {
         return Some(Response::LackingPermission(Permission::ReadMessages));
     }
 
-    let prev =
+    // ! CHECK IF USER HAS PERMISSION TO VIEW EDITS OF MESSAGES
-        // ! CHECK IF USER HAS PERMISSION TO VIEW EDITS OF MESSAGES
+    let mut entries = vec![];
-        if let Some(previous) = message.previous_content {
+    for entry in message.previous_content {
-            let mut entries = vec![];
+        entries.push(json!({
-            for entry in previous {
+            "content": entry.content,
-                entries.push(json!({
+            "time": entry.time.timestamp(),
-                    "content": entry.content,
+        }));
-                    "time": entry.time.timestamp(),
+    }
-                }));
-            }
-
-            Some(entries)
-        } else {
-            None
-        };
 
     Some(Response::Success(json!({
         "id": message.id,
         "author": message.author,
         "content": message.content,
         "edited": if let Some(t) = message.edited { Some(t.timestamp()) } else { None },
-        "previous_content": prev,
+        "previous_content": entries,
     })))
 }
 
@@ -568,7 +642,7 @@ pub struct EditMessage {
 #[patch("/<target>/messages/<message>", data = "<edit>")]
 pub fn edit_message(
     user: UserRef,
-    target: ChannelRef,
+    target: Channel,
     message: Message,
     edit: Json<EditMessage>,
 ) -> Option<Response> {
@@ -592,12 +666,12 @@ pub fn edit_message(
         doc! { "_id": message.id.clone() },
         doc! {
             "$set": {
-                "content": edit.content.clone(),
+                "content": &edit.content,
-                "edited": UtcDatetime(edited)
+                "edited": Bson::DateTime(edited)
             },
             "$push": {
                 "previous_content": {
-                    "content": message.content,
+                    "content": &message.content,
                     "time": time,
                 }
             },
@@ -605,19 +679,15 @@ pub fn edit_message(
         None,
     ) {
         Ok(_) => {
-            /*websocket::queue_message(
+            notifications::send_message_given_channel(
-                get_recipients(&target),
+                Notification::message_edit(Edit {
-                json!({
+                    id: message.id.clone(),
-                    "type": "message_update",
+                    channel: target.id.clone(),
-                    "data": {
+                    author: message.author.clone(),
-                        "id": message.id,
+                    content: edit.content.clone(),
-                        "channel": target.id,
+                }),
-                        "content": edit.content.clone(),
+                &target,
-                        "edited": edited.timestamp()
+            );
-                    },
-                })
-                .to_string(),
-            );*/
 
             Some(Response::Result(super::Status::Ok))
         }
@@ -629,7 +699,7 @@ pub fn edit_message(
 
 /// delete a message
 #[delete("/<target>/messages/<message>")]
-pub fn delete_message(user: UserRef, target: ChannelRef, message: Message) -> Option<Response> {
+pub fn delete_message(user: UserRef, target: Channel, message: Message) -> Option<Response> {
     let permissions = with_permissions!(user, target);
 
     if !permissions.get_manage_messages() {
@@ -642,17 +712,12 @@ pub fn delete_message(user: UserRef, target: ChannelRef, message: Message) -> Op
 
     match col.delete_one(doc! { "_id": &message.id }, None) {
         Ok(_) => {
-            /*websocket::queue_message(
+            notifications::send_message_given_channel(
-                get_recipients(&target),
+                Notification::message_delete(Delete {
-                json!({
+                    id: message.id.clone(),
-                    "type": "message_delete",
+                }),
-                    "data": {
+                &target,
-                        "id": message.id,
+            );
-                        "channel": target.id
-                    },
-                })
-                .to_string(),
-            );*/
 
             Some(Response::Result(super::Status::Ok))
         }
@@ -661,3 +726,24 @@ pub fn delete_message(user: UserRef, target: ChannelRef, message: Message) -> Op
         )),
     }
 }
+
+#[options("/create")]
+pub fn create_group_preflight() -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>")]
+pub fn channel_preflight(_target: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/recipients/<_member>")]
+pub fn member_preflight(_target: String, _member: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/messages")]
+pub fn messages_preflight(_target: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/messages/<_message>")]
+pub fn message_preflight(_target: String, _message: String) -> Response {
+    Response::Result(super::Status::Ok)
+}

src/routes/guild.rs

@@ -1,12 +1,17 @@
 use super::channel::ChannelType;
 use super::Response;
-use crate::database::{self, channel::Channel, Permission, PermissionCalculator};
+use crate::database::guild::{get_invite, get_member, Guild};
+use crate::database::{
+    self, channel::fetch_channel, channel::Channel, Permission, PermissionCalculator,
+};
 use crate::guards::auth::UserRef;
-use crate::guards::channel::ChannelRef;
+use crate::notifications::{
-use crate::guards::guild::{get_invite, get_member, GuildRef};
+    self,
+    events::{guilds::*, Notification},
+};
 use crate::util::gen_token;
 
-use bson::{doc, from_bson, Bson};
+use mongodb::bson::{doc, from_bson, Bson};
 use mongodb::options::{FindOneOptions, FindOptions};
 use rocket::request::Form;
 use rocket_contrib::json::Json;
@@ -88,7 +93,7 @@ pub fn my_guilds(user: UserRef) -> Response {
 
 /// fetch a guild
 #[get("/<target>")]
-pub fn guild(user: UserRef, target: GuildRef) -> Option<Response> {
+pub fn guild(user: UserRef, target: Guild) -> Option<Response> {
     with_permissions!(user, target);
 
     let col = database::get_collection("channels");
@@ -103,9 +108,7 @@ pub fn guild(user: UserRef, target: GuildRef) -> Option<Response> {
             let mut channels = vec![];
             for item in results {
                 if let Ok(entry) = item {
-                    if let Ok(channel) =
+                    if let Ok(channel) = from_bson(Bson::Document(entry)) as Result<Channel, _> {
-                        from_bson(bson::Bson::Document(entry)) as Result<Channel, _>
-                    {
                         channels.push(json!({
                             "id": channel.id,
                             "name": channel.name,
@@ -131,7 +134,7 @@ pub fn guild(user: UserRef, target: GuildRef) -> Option<Response> {
 
 /// delete or leave a guild
 #[delete("/<target>")]
-pub fn remove_guild(user: UserRef, target: GuildRef) -> Option<Response> {
+pub fn remove_guild(user: UserRef, target: Guild) -> Option<Response> {
     with_permissions!(user, target);
 
     if user.id == target.owner {
@@ -171,19 +174,41 @@ pub fn remove_guild(user: UserRef, target: GuildRef) -> Option<Response> {
                     )
                     .is_ok()
                 {
-                    if database::get_collection("guilds")
+                    if database::get_collection("members")
-                        .delete_one(
+                        .delete_many(
                             doc! {
-                                "_id": &target.id
+                                "_id.guild": &target.id,
                             },
                             None,
                         )
                         .is_ok()
                     {
-                        Some(Response::Result(super::Status::Ok))
+                        if database::get_collection("guilds")
+                            .delete_one(
+                                doc! {
+                                    "_id": &target.id
+                                },
+                                None,
+                            )
+                            .is_ok()
+                        {
+                            notifications::send_message_threaded(
+                                None,
+                                target.id.clone(),
+                                Notification::guild_delete(Delete {
+                                    id: target.id.clone(),
+                                }),
+                            );
+
+                            Some(Response::Result(super::Status::Ok))
+                        } else {
+                            Some(Response::InternalServerError(
+                                json!({ "error": "Failed to delete guild." }),
+                            ))
+                        }
                     } else {
                         Some(Response::InternalServerError(
-                            json!({ "error": "Failed to delete guild." }),
+                            json!({ "error": "Failed to delete guild members." }),
                         ))
                     }
                 } else {
@@ -212,6 +237,16 @@ pub fn remove_guild(user: UserRef, target: GuildRef) -> Option<Response> {
             )
             .is_ok()
         {
+            notifications::send_message_threaded(
+                None,
+                target.id.clone(),
+                Notification::guild_user_leave(UserLeave {
+                    id: target.id.clone(),
+                    user: user.id.clone(),
+                    banned: false,
+                }),
+            );
+
             Some(Response::Result(super::Status::Ok))
         } else {
             Some(Response::InternalServerError(
@@ -230,11 +265,7 @@ pub struct CreateChannel {
 
 /// create a new channel
 #[post("/<target>/channels", data = "<info>")]
-pub fn create_channel(
+pub fn create_channel(user: UserRef, target: Guild, info: Json<CreateChannel>) -> Option<Response> {
-    user: UserRef,
-    target: GuildRef,
-    info: Json<CreateChannel>,
-) -> Option<Response> {
     let (permissions, _) = with_permissions!(user, target);
 
     if !permissions.get_manage_channels() {
@@ -268,13 +299,24 @@ pub fn create_channel(
                     "nonce": &nonce,
                     "type": 2,
                     "guild": &target.id,
-                    "name": name,
+                    "name": &name,
-                    "description": description,
+                    "description": &description,
                 },
                 None,
             )
             .is_ok()
         {
+            notifications::send_message_threaded(
+                None,
+                target.id.clone(),
+                Notification::guild_channel_create(ChannelCreate {
+                    id: target.id.clone(),
+                    channel: id.clone(),
+                    name: name.clone(),
+                    description: description.clone(),
+                }),
+            );
+
             Some(Response::Success(json!({ "id": &id })))
         } else {
             Some(Response::BadRequest(
@@ -297,8 +339,8 @@ pub struct InviteOptions {
 #[post("/<target>/channels/<channel>/invite", data = "<_options>")]
 pub fn create_invite(
     user: UserRef,
-    target: GuildRef,
+    target: Guild,
-    channel: ChannelRef,
+    channel: Channel,
     _options: Json<InviteOptions>,
 ) -> Option<Response> {
     let (permissions, _) = with_permissions!(user, target);
@@ -334,7 +376,7 @@ pub fn create_invite(
 
 /// remove an invite
 #[delete("/<target>/invites/<code>")]
-pub fn remove_invite(user: UserRef, target: GuildRef, code: String) -> Option<Response> {
+pub fn remove_invite(user: UserRef, target: Guild, code: String) -> Option<Response> {
     let (permissions, _) = with_permissions!(user, target);
 
     if let Some((guild_id, _, invite)) = get_invite(&code, None) {
@@ -375,41 +417,38 @@ pub fn remove_invite(user: UserRef, target: GuildRef, code: String) -> Option<Re
 
 /// fetch all guild invites
 #[get("/<target>/invites")]
-pub fn fetch_invites(user: UserRef, target: GuildRef) -> Option<Response> {
+pub fn fetch_invites(user: UserRef, target: Guild) -> Option<Response> {
     let (permissions, _) = with_permissions!(user, target);
 
     if !permissions.get_manage_server() {
         return Some(Response::LackingPermission(Permission::ManageServer));
     }
 
-    if let Some(doc) = target.fetch_data(doc! {
+    Some(Response::Success(json!(target.invites)))
-        "invites": 1,
-    }) {
-        Some(Response::Success(json!(doc.get_array("invites").unwrap())))
-    } else {
-        Some(Response::InternalServerError(
-            json!({ "error": "Failed to fetch invites." }),
-        ))
-    }
 }
 
 /// view an invite before joining
 #[get("/join/<code>", rank = 1)]
 pub fn fetch_invite(user: UserRef, code: String) -> Response {
     if let Some((guild_id, name, invite)) = get_invite(&code, user.id) {
-        if let Some(channel) = ChannelRef::from(invite.channel) {
+        match fetch_channel(&invite.channel) {
-            Response::Success(json!({
+            Ok(result) => {
-                "guild": {
+                if let Some(channel) = result {
-                    "id": guild_id,
+                    Response::Success(json!({
-                    "name": name,
+                        "guild": {
-                },
+                            "id": guild_id,
-                "channel": {
+                            "name": name,
-                    "id": channel.id,
+                        },
-                    "name": channel.name,
+                        "channel": {
+                            "id": channel.id,
+                            "name": channel.name,
+                        }
+                    }))
+                } else {
+                    Response::NotFound(json!({ "error": "Channel does not exist." }))
                 }
-            }))
+            }
-        } else {
+            Err(err) => Response::InternalServerError(json!({ "error": err })),
-            Response::BadRequest(json!({ "error": "Failed to fetch channel." }))
         }
     } else {
         Response::NotFound(json!({ "error": "Failed to fetch invite or code is invalid." }))
@@ -442,6 +481,15 @@ pub fn use_invite(user: UserRef, code: String) -> Response {
                     )
                     .is_ok()
                 {
+                    notifications::send_message_threaded(
+                        None,
+                        guild_id.clone(),
+                        Notification::guild_user_join(UserJoin {
+                            id: guild_id.clone(),
+                            user: user.id.clone(),
+                        }),
+                    );
+
                     Response::Success(json!({
                         "guild": &guild_id,
                         "channel": &invite.channel,
@@ -563,7 +611,7 @@ pub fn create_guild(user: UserRef, info: Json<CreateGuild>) -> Response {
 
 /// fetch a guild's member
 #[get("/<target>/members")]
-pub fn fetch_members(user: UserRef, target: GuildRef) -> Option<Response> {
+pub fn fetch_members(user: UserRef, target: Guild) -> Option<Response> {
     with_permissions!(user, target);
 
     if let Ok(result) =
@@ -590,7 +638,7 @@ pub fn fetch_members(user: UserRef, target: GuildRef) -> Option<Response> {
 
 /// fetch a guild member
 #[get("/<target>/members/<other>")]
-pub fn fetch_member(user: UserRef, target: GuildRef, other: String) -> Option<Response> {
+pub fn fetch_member(user: UserRef, target: Guild, other: String) -> Option<Response> {
     with_permissions!(user, target);
 
     if let Some(member) = get_member(&target.id, &other) {
@@ -607,7 +655,7 @@ pub fn fetch_member(user: UserRef, target: GuildRef, other: String) -> Option<Re
 
 /// kick a guild member
 #[delete("/<target>/members/<other>")]
-pub fn kick_member(user: UserRef, target: GuildRef, other: String) -> Option<Response> {
+pub fn kick_member(user: UserRef, target: Guild, other: String) -> Option<Response> {
     let (permissions, _) = with_permissions!(user, target);
 
     if user.id == other {
@@ -636,6 +684,16 @@ pub fn kick_member(user: UserRef, target: GuildRef, other: String) -> Option<Res
         )
         .is_ok()
     {
+        notifications::send_message_threaded(
+            None,
+            target.id.clone(),
+            Notification::guild_user_leave(UserLeave {
+                id: target.id.clone(),
+                user: other.clone(),
+                banned: false,
+            }),
+        );
+
         Some(Response::Result(super::Status::Ok))
     } else {
         Some(Response::InternalServerError(
@@ -653,7 +711,7 @@ pub struct BanOptions {
 #[put("/<target>/members/<other>/ban?<options..>")]
 pub fn ban_member(
     user: UserRef,
-    target: GuildRef,
+    target: Guild,
     other: String,
     options: Form<BanOptions>,
 ) -> Option<Response> {
@@ -712,6 +770,16 @@ pub fn ban_member(
         )
         .is_ok()
     {
+        notifications::send_message_threaded(
+            None,
+            target.id.clone(),
+            Notification::guild_user_leave(UserLeave {
+                id: target.id.clone(),
+                user: other.clone(),
+                banned: true,
+            }),
+        );
+
         Some(Response::Result(super::Status::Ok))
     } else {
         Some(Response::InternalServerError(
@@ -722,7 +790,7 @@ pub fn ban_member(
 
 /// unban a guild member
 #[delete("/<target>/members/<other>/ban")]
-pub fn unban_member(user: UserRef, target: GuildRef, other: String) -> Option<Response> {
+pub fn unban_member(user: UserRef, target: Guild, other: String) -> Option<Response> {
     let (permissions, _) = with_permissions!(user, target);
 
     if user.id == other {
@@ -735,19 +803,7 @@ pub fn unban_member(user: UserRef, target: GuildRef, other: String) -> Option<Re
         return Some(Response::LackingPermission(Permission::BanMembers));
     }
 
-    if target
+    if target.bans.iter().any(|v| v.id == other) {
-        .fetch_data_given(
-            doc! {
-                "bans": {
-                    "$elemMatch": {
-                        "id": &other
-                    }
-                }
-            },
-            doc! {},
-        )
-        .is_none()
-    {
         return Some(Response::BadRequest(json!({ "error": "User not banned." })));
     }
 
@@ -776,3 +832,44 @@ pub fn unban_member(user: UserRef, target: GuildRef, other: String) -> Option<Re
         ))
     }
 }
+
+#[options("/<_target>")]
+pub fn guild_preflight(_target: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/channels")]
+pub fn create_channel_preflight(_target: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/channels/<_channel>/invite")]
+pub fn create_invite_preflight(_target: String, _channel: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/invites/<_code>")]
+pub fn remove_invite_preflight(_target: String, _code: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/invites")]
+pub fn fetch_invites_preflight(_target: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/join/<_code>", rank = 1)]
+pub fn invite_preflight(_code: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/create")]
+pub fn create_guild_preflight() -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/members")]
+pub fn fetch_members_preflight(_target: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/members/<_other>")]
+pub fn fetch_member_preflight(_target: String, _other: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/members/<_other>/ban")]
+pub fn ban_member_preflight(_target: String, _other: String) -> Response {
+    Response::Result(super::Status::Ok)
+}

src/routes/mod.rs

@@ -19,6 +19,8 @@ pub enum Response {
     Success(JsonValue),
     #[response()]
     Redirect(Redirect),
+    #[response(status = 207)]
+    PartialStatus(JsonValue),
     #[response(status = 400)]
     BadRequest(JsonValue),
     #[response(status = 401)]
@@ -33,6 +35,8 @@ pub enum Response {
     Conflict(JsonValue),
     #[response(status = 410)]
     Gone(JsonValue),
+    #[response(status = 418)]
+    Teapot(JsonValue),
     #[response(status = 422)]
     UnprocessableEntity(JsonValue),
     #[response(status = 429)]
@@ -51,8 +55,7 @@ impl<'a> rocket::response::Responder<'a> for Permission {
             .header(ContentType::JSON)
             .sized_body(Cursor::new(format!(
                 "{{\"error\":\"Lacking permission: {:?}.\",\"permission\":{}}}",
-                self,
+                self, self as u32,
-                self as u32,
             )))
             .ok()
     }
@@ -60,23 +63,28 @@ impl<'a> rocket::response::Responder<'a> for Permission {
 
 pub fn mount(rocket: Rocket) -> Rocket {
     rocket
-        .mount("/api", routes![root::root])
+        .mount("/", routes![root::root, root::root_preflight, root::teapot])
         .mount(
-            "/api/account",
+            "/account",
             routes![
                 account::create,
                 account::verify_email,
                 account::resend_email,
                 account::login,
-                account::token
+                account::token,
+                account::create_preflight,
+                account::verify_email_preflight,
+                account::resend_email_preflight,
+                account::login_preflight,
+                account::token_preflight,
             ],
         )
         .mount(
-            "/api/users",
+            "/users",
             routes![
                 user::me,
                 user::user,
-                user::lookup,
+                user::query,
                 user::dms,
                 user::dm,
                 user::get_friends,
@@ -84,11 +92,17 @@ pub fn mount(rocket: Rocket) -> Rocket {
                 user::add_friend,
                 user::remove_friend,
                 user::block_user,
-                user::unblock_user
+                user::unblock_user,
+                user::user_preflight,
+                user::query_preflight,
+                user::dms_preflight,
+                user::dm_preflight,
+                user::friend_preflight,
+                user::block_user_preflight,
             ],
         )
         .mount(
-            "/api/channels",
+            "/channels",
             routes![
                 channel::create_group,
                 channel::channel,
@@ -99,11 +113,16 @@ pub fn mount(rocket: Rocket) -> Rocket {
                 channel::get_message,
                 channel::send_message,
                 channel::edit_message,
-                channel::delete_message
+                channel::delete_message,
+                channel::create_group_preflight,
+                channel::channel_preflight,
+                channel::member_preflight,
+                channel::messages_preflight,
+                channel::message_preflight,
             ],
         )
         .mount(
-            "/api/guild",
+            "/guild",
             routes![
                 guild::my_guilds,
                 guild::guild,
@@ -119,7 +138,17 @@ pub fn mount(rocket: Rocket) -> Rocket {
                 guild::fetch_member,
                 guild::kick_member,
                 guild::ban_member,
-                guild::unban_member
+                guild::unban_member,
+                guild::guild_preflight,
+                guild::create_channel_preflight,
+                guild::create_invite_preflight,
+                guild::remove_invite_preflight,
+                guild::fetch_invites_preflight,
+                guild::invite_preflight,
+                guild::create_guild_preflight,
+                guild::fetch_members_preflight,
+                guild::fetch_member_preflight,
+                guild::ban_member_preflight,
             ],
         )
 }

src/routes/root.rs

@@ -1,11 +1,25 @@
 use super::Response;
 
-use bson::doc;
+use mongodb::bson::doc;
 
 /// root
 #[get("/")]
 pub fn root() -> Response {
     Response::Success(json!({
-        "revolt": "0.0.1"
+        "revolt": "0.2.3"
+    }))
+}
+
+#[options("/")]
+pub fn root_preflight() -> Response {
+    Response::Result(super::Status::Ok)
+}
+
+/// I'm a teapot.
+#[delete("/")]
+pub fn teapot() -> Response {
+    Response::Teapot(json!({
+        "teapot": true,
+        "can_delete": false
     }))
 }

src/routes/user.rs

@@ -1,10 +1,14 @@
 use super::Response;
 use crate::database::{self, get_relationship, get_relationship_internal, mutual, Relationship};
 use crate::guards::auth::UserRef;
+use crate::notifications::{
+    self,
+    events::{users::*, Notification},
+};
 use crate::routes::channel;
 
-use bson::doc;
+use mongodb::bson::doc;
-use mongodb::options::FindOptions;
+use mongodb::options::{Collation, FindOneOptions, FindOptions};
 use rocket_contrib::json::Json;
 use serde::{Deserialize, Serialize};
 use ulid::Ulid;
@@ -16,6 +20,7 @@ pub fn me(user: UserRef) -> Response {
         Response::Success(json!({
             "id": user.id,
             "username": user.username,
+            "display_name": user.display_name,
             "email": info.get_str("email").unwrap(),
             "verified": user.email_verified,
         }))
@@ -32,7 +37,8 @@ pub fn user(user: UserRef, target: UserRef) -> Response {
     Response::Success(json!({
         "id": target.id,
         "username": target.username,
-        "relationship": get_relationship(&user, &target) as u8,
+        "display_name": target.display_name,
+        "relationship": get_relationship(&user, &target) as i32,
         "mutual": {
             "guilds": mutual::find_mutual_guilds(&user.id, &target.id),
             "friends": mutual::find_mutual_friends(&user.id, &target.id),
@@ -42,6 +48,41 @@ pub fn user(user: UserRef, target: UserRef) -> Response {
 }
 
 #[derive(Serialize, Deserialize)]
+pub struct UserQuery {
+    username: String,
+}
+
+/// find a user by their username
+#[post("/query", data = "<query>")]
+pub fn query(user: UserRef, query: Json<UserQuery>) -> Response {
+    let relationships = user.fetch_relationships();
+    let col = database::get_collection("users");
+
+    if let Ok(result) = col.find_one(
+        doc! { "username": query.username.clone() },
+        FindOneOptions::builder()
+            .collation(Collation::builder().locale("en").strength(2).build())
+            .build(),
+    ) {
+        if let Some(doc) = result {
+            let id = doc.get_str("_id").unwrap();
+            Response::Success(json!({
+                "id": id,
+                "username": doc.get_str("username").unwrap(),
+                "display_name": doc.get_str("display_name").unwrap(),
+                "relationship": get_relationship_internal(&user.id, &id, &relationships) as i32
+            }))
+        } else {
+            Response::NotFound(json!({
+                "error": "User not found!"
+            }))
+        }
+    } else {
+        Response::InternalServerError(json!({ "error": "Failed database query." }))
+    }
+}
+
+/*#[derive(Serialize, Deserialize)]
 pub struct LookupQuery {
     username: String,
 }
@@ -67,7 +108,7 @@ pub fn lookup(user: UserRef, query: Json<LookupQuery>) -> Response {
                 results.push(json!({
                     "id": id,
                     "username": doc.get_str("username").unwrap(),
-                    "relationship": get_relationship_internal(&user.id, &id, &relationships) as u8
+                    "relationship": get_relationship_internal(&user.id, &id, &relationships) as i32
                 }));
             }
         }
@@ -76,7 +117,7 @@ pub fn lookup(user: UserRef, query: Json<LookupQuery>) -> Response {
     } else {
         Response::InternalServerError(json!({ "error": "Failed database query." }))
     }
-}
+}*/
 
 /// retrieve all of your DMs
 #[get("/@me/dms")]
@@ -87,7 +128,8 @@ pub fn dms(user: UserRef) -> Response {
         doc! {
             "$or": [
                 {
-                    "type": channel::ChannelType::DM as i32
+                    "type": channel::ChannelType::DM as i32,
+                    "active": true
                 },
                 {
                     "type": channel::ChannelType::GROUPDM as i32
@@ -101,6 +143,7 @@ pub fn dms(user: UserRef) -> Response {
         for item in results {
             if let Ok(doc) = item {
                 let id = doc.get_str("_id").unwrap();
+                let last_message = doc.get_document("last_message").unwrap();
                 let recipients = doc.get_array("recipients").unwrap();
 
                 match doc.get_i32("type").unwrap() {
@@ -108,6 +151,7 @@ pub fn dms(user: UserRef) -> Response {
                         channels.push(json!({
                             "id": id,
                             "type": 0,
+                            "last_message": last_message,
                             "recipients": recipients,
                         }));
                     }
@@ -186,7 +230,7 @@ pub fn get_friends(user: UserRef) -> Response {
 /// retrieve friend status with user
 #[get("/<target>/friend")]
 pub fn get_friend(user: UserRef, target: UserRef) -> Response {
-    Response::Success(json!({ "status": get_relationship(&user, &target) as u8 }))
+    Response::Success(json!({ "status": get_relationship(&user, &target) as i32 }))
 }
 
 /// create or accept a friend request
@@ -218,8 +262,8 @@ pub fn add_friend(user: UserRef, target: UserRef) -> Response {
                 if col
                     .update_one(
                         doc! {
-                            "_id": target.id,
+                            "_id": target.id.clone(),
-                            "relations.id": user.id
+                            "relations.id": user.id.clone()
                         },
                         doc! {
                             "$set": {
@@ -230,7 +274,25 @@ pub fn add_friend(user: UserRef, target: UserRef) -> Response {
                     )
                     .is_ok()
                 {
-                    Response::Success(json!({ "status": Relationship::Friend as u8 }))
+                    notifications::send_message_threaded(
+                        vec![target.id.clone()],
+                        None,
+                        Notification::user_friend_status(FriendStatus {
+                            id: user.id.clone(),
+                            status: Relationship::Friend as i32,
+                        }),
+                    );
+
+                    notifications::send_message_threaded(
+                        vec![user.id.clone()],
+                        None,
+                        Notification::user_friend_status(FriendStatus {
+                            id: target.id.clone(),
+                            status: Relationship::Friend as i32,
+                        }),
+                    );
+
+                    Response::Success(json!({ "status": Relationship::Friend as i32 }))
                 } else {
                     Response::InternalServerError(
                         json!({ "error": "Failed to commit! Try re-adding them as a friend." }),
@@ -269,12 +331,12 @@ pub fn add_friend(user: UserRef, target: UserRef) -> Response {
                 if col
                     .update_one(
                         doc! {
-                            "_id": target.id
+                            "_id": target.id.clone()
                         },
                         doc! {
                             "$push": {
                                 "relations": {
-                                    "id": user.id,
+                                    "id": user.id.clone(),
                                     "status": Relationship::Incoming as i32
                                 }
                             }
@@ -283,7 +345,25 @@ pub fn add_friend(user: UserRef, target: UserRef) -> Response {
                     )
                     .is_ok()
                 {
-                    Response::Success(json!({ "status": Relationship::Outgoing as u8 }))
+                    notifications::send_message_threaded(
+                        vec![user.id.clone()],
+                        None,
+                        Notification::user_friend_status(FriendStatus {
+                            id: target.id.clone(),
+                            status: Relationship::Outgoing as i32,
+                        }),
+                    );
+
+                    notifications::send_message_threaded(
+                        vec![target.id.clone()],
+                        None,
+                        Notification::user_friend_status(FriendStatus {
+                            id: user.id.clone(),
+                            status: Relationship::Incoming as i32,
+                        }),
+                    );
+
+                    Response::Success(json!({ "status": Relationship::Outgoing as i32 }))
                 } else {
                     Response::InternalServerError(
                         json!({ "error": "Failed to commit! Try re-adding them as a friend." }),
@@ -327,12 +407,12 @@ pub fn remove_friend(user: UserRef, target: UserRef) -> Response {
                 if col
                     .update_one(
                         doc! {
-                            "_id": target.id
+                            "_id": target.id.clone()
                         },
                         doc! {
                             "$pull": {
                                 "relations": {
-                                    "id": user.id
+                                    "id": user.id.clone()
                                 }
                             }
                         },
@@ -340,7 +420,25 @@ pub fn remove_friend(user: UserRef, target: UserRef) -> Response {
                     )
                     .is_ok()
                 {
-                    Response::Success(json!({ "status": Relationship::NONE as u8 }))
+                    notifications::send_message_threaded(
+                        vec![user.id.clone()],
+                        None,
+                        Notification::user_friend_status(FriendStatus {
+                            id: target.id.clone(),
+                            status: Relationship::NONE as i32,
+                        }),
+                    );
+
+                    notifications::send_message_threaded(
+                        vec![target.id.clone()],
+                        None,
+                        Notification::user_friend_status(FriendStatus {
+                            id: user.id.clone(),
+                            status: Relationship::NONE as i32,
+                        }),
+                    );
+
+                    Response::Success(json!({ "status": Relationship::NONE as i32 }))
                 } else {
                     Response::InternalServerError(
                         json!({ "error": "Failed to commit! Target remains in same state." }),
@@ -384,8 +482,8 @@ pub fn block_user(user: UserRef, target: UserRef) -> Response {
                 if col
                     .update_one(
                         doc! {
-                            "_id": target.id,
+                            "_id": target.id.clone(),
-                            "relations.id": user.id
+                            "relations.id": user.id.clone()
                         },
                         doc! {
                             "$set": {
@@ -396,7 +494,91 @@ pub fn block_user(user: UserRef, target: UserRef) -> Response {
                     )
                     .is_ok()
                 {
-                    Response::Success(json!({ "status": Relationship::Blocked as u8 }))
+                    notifications::send_message_threaded(
+                        vec![user.id.clone()],
+                        None,
+                        Notification::user_friend_status(FriendStatus {
+                            id: target.id.clone(),
+                            status: Relationship::Blocked as i32,
+                        }),
+                    );
+
+                    notifications::send_message_threaded(
+                        vec![target.id.clone()],
+                        None,
+                        Notification::user_friend_status(FriendStatus {
+                            id: user.id.clone(),
+                            status: Relationship::BlockedOther as i32,
+                        }),
+                    );
+
+                    Response::Success(json!({ "status": Relationship::Blocked as i32 }))
+                } else {
+                    Response::InternalServerError(
+                        json!({ "error": "Failed to commit! Try blocking the user again, remove it first." }),
+                    )
+                }
+            } else {
+                Response::InternalServerError(
+                    json!({ "error": "Failed to commit to database, try again." }),
+                )
+            }
+        }
+
+        Relationship::NONE => {
+            if col
+                .update_one(
+                    doc! {
+                        "_id": user.id.clone(),
+                    },
+                    doc! {
+                        "$push": {
+                            "relations": {
+                                "id": target.id.clone(),
+                                "status": Relationship::Blocked as i32,
+                            }
+                        }
+                    },
+                    None,
+                )
+                .is_ok()
+            {
+                if col
+                    .update_one(
+                        doc! {
+                            "_id": target.id.clone(),
+                        },
+                        doc! {
+                            "$push": {
+                                "relations": {
+                                    "id": user.id.clone(),
+                                    "status": Relationship::BlockedOther as i32,
+                                }
+                            }
+                        },
+                        None,
+                    )
+                    .is_ok()
+                {
+                    notifications::send_message_threaded(
+                        vec![user.id.clone()],
+                        None,
+                        Notification::user_friend_status(FriendStatus {
+                            id: target.id.clone(),
+                            status: Relationship::Blocked as i32,
+                        }),
+                    );
+
+                    notifications::send_message_threaded(
+                        vec![target.id.clone()],
+                        None,
+                        Notification::user_friend_status(FriendStatus {
+                            id: user.id.clone(),
+                            status: Relationship::BlockedOther as i32,
+                        }),
+                    );
+
+                    Response::Success(json!({ "status": Relationship::Blocked as i32 }))
                 } else {
                     Response::InternalServerError(
                         json!({ "error": "Failed to commit! Try blocking the user again, remove it first." }),
@@ -427,16 +609,23 @@ pub fn block_user(user: UserRef, target: UserRef) -> Response {
                 )
                 .is_ok()
             {
-                Response::Success(json!({ "status": Relationship::Blocked as u8 }))
+                notifications::send_message_threaded(
+                    vec![user.id.clone()],
+                    None,
+                    Notification::user_friend_status(FriendStatus {
+                        id: target.id.clone(),
+                        status: Relationship::Blocked as i32,
+                    }),
+                );
+
+                Response::Success(json!({ "status": Relationship::Blocked as i32 }))
             } else {
                 Response::InternalServerError(
                     json!({ "error": "Failed to commit to database, try again." }),
                 )
             }
         }
-        Relationship::SELF | Relationship::NONE => {
+        Relationship::SELF => Response::BadRequest(json!({ "error": "This has no effect." })),
-            Response::BadRequest(json!({ "error": "This has no effect." }))
-        }
     }
 }
 
@@ -463,7 +652,16 @@ pub fn unblock_user(user: UserRef, target: UserRef) -> Response {
                     )
                     .is_ok()
                 {
-                    Response::Success(json!({ "status": Relationship::BlockedOther as u8 }))
+                    notifications::send_message_threaded(
+                        vec![user.id.clone()],
+                        None,
+                        Notification::user_friend_status(FriendStatus {
+                            id: target.id.clone(),
+                            status: Relationship::BlockedOther as i32,
+                        }),
+                    );
+
+                    Response::Success(json!({ "status": Relationship::BlockedOther as i32 }))
                 } else {
                     Response::InternalServerError(
                         json!({ "error": "Failed to commit to database, try again." }),
@@ -490,12 +688,12 @@ pub fn unblock_user(user: UserRef, target: UserRef) -> Response {
                     if col
                         .update_one(
                             doc! {
-                                "_id": target.id
+                                "_id": target.id.clone()
                             },
                             doc! {
                                 "$pull": {
                                     "relations": {
-                                        "id": user.id
+                                        "id": user.id.clone()
                                     }
                                 }
                             },
@@ -503,7 +701,25 @@ pub fn unblock_user(user: UserRef, target: UserRef) -> Response {
                         )
                         .is_ok()
                     {
-                        Response::Success(json!({ "status": Relationship::NONE as u8 }))
+                        notifications::send_message_threaded(
+                            vec![user.id.clone()],
+                            None,
+                            Notification::user_friend_status(FriendStatus {
+                                id: target.id.clone(),
+                                status: Relationship::NONE as i32,
+                            }),
+                        );
+
+                        notifications::send_message_threaded(
+                            vec![target.id.clone()],
+                            None,
+                            Notification::user_friend_status(FriendStatus {
+                                id: user.id.clone(),
+                                status: Relationship::NONE as i32,
+                            }),
+                        );
+
+                        Response::Success(json!({ "status": Relationship::NONE as i32 }))
                     } else {
                         Response::InternalServerError(
                             json!({ "error": "Failed to commit! Target remains in same state." }),
@@ -527,3 +743,28 @@ pub fn unblock_user(user: UserRef, target: UserRef) -> Response {
         | Relationship::NONE => Response::BadRequest(json!({ "error": "This has no effect." })),
     }
 }
+
+#[options("/<_target>")]
+pub fn user_preflight(_target: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/query")]
+pub fn query_preflight() -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/@me/dms")]
+pub fn dms_preflight() -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/dm")]
+pub fn dm_preflight(_target: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/friend")]
+pub fn friend_preflight(_target: String) -> Response {
+    Response::Result(super::Status::Ok)
+}
+#[options("/<_target>/block")]
+pub fn block_user_preflight(_target: String) -> Response {
+    Response::Result(super::Status::Ok)
+}

src/websocket/mod.rs

@@ -1,193 +0,0 @@
-extern crate ws;
-
-use crate::database;
-
-use hashbrown::HashMap;
-use std::sync::RwLock;
-use ulid::Ulid;
-
-use bson::doc;
-use serde_json::{from_str, json, Value};
-
-use ws::{listen, CloseCode, Error, Handler, Handshake, Message, Result, Sender};
-
-struct Cell {
-    id: String,
-    out: Sender,
-}
-
-use once_cell::sync::OnceCell;
-static mut CLIENTS: OnceCell<RwLock<HashMap<String, Vec<Cell>>>> = OnceCell::new();
-
-struct Server {
-    out: Sender,
-    id: Option<String>,
-    internal: String,
-}
-
-impl Handler for Server {
-    fn on_open(&mut self, _: Handshake) -> Result<()> {
-        Ok(())
-    }
-
-    fn on_message(&mut self, msg: Message) -> Result<()> {
-        if let Message::Text(text) = msg {
-            let data: Value = from_str(&text).unwrap();
-
-            if let Value::String(packet_type) = &data["type"] {
-                match packet_type.as_str() {
-                    "authenticate" => {
-                        if self.id.is_some() {
-                            self.out.send(
-                                json!({
-                                    "type": "authenticate",
-                                    "success": false,
-                                    "error": "Already authenticated!"
-                                })
-                                .to_string(),
-                            )
-                        } else if let Value::String(token) = &data["token"] {
-                            let col = database::get_collection("users");
-
-                            match col.find_one(doc! { "access_token": token }, None).unwrap() {
-                                Some(u) => {
-                                    let id = u.get_str("_id").expect("Missing id.");
-
-                                    unsafe {
-                                        let mut map = CLIENTS.get_mut().unwrap().write().unwrap();
-                                        let cell = Cell {
-                                            id: self.internal.clone(),
-                                            out: self.out.clone(),
-                                        };
-                                        if map.contains_key(&id.to_string()) {
-                                            map.get_mut(&id.to_string()).unwrap().push(cell);
-                                        } else {
-                                            map.insert(id.to_string(), vec![cell]);
-                                        }
-                                    }
-
-                                    println!(
-                                        "Websocket client connected. [ID: {} // {}]",
-                                        id.to_string(),
-                                        self.internal
-                                    );
-
-                                    self.id = Some(id.to_string());
-                                    self.out.send(
-                                        json!({
-                                            "type": "authenticate",
-                                            "success": true
-                                        })
-                                        .to_string(),
-                                    )
-                                }
-                                None => self.out.send(
-                                    json!({
-                                        "type": "authenticate",
-                                        "success": false,
-                                        "error": "Invalid authentication token."
-                                    })
-                                    .to_string(),
-                                ),
-                            }
-                        } else {
-                            self.out.send(
-                                json!({
-                                    "type": "authenticate",
-                                    "success": false,
-                                    "error": "Missing authentication token."
-                                })
-                                .to_string(),
-                            )
-                        }
-                    }
-                    _ => Ok(()),
-                }
-            } else {
-                Ok(())
-            }
-        } else {
-            Ok(())
-        }
-    }
-
-    fn on_close(&mut self, code: CloseCode, reason: &str) {
-        match code {
-            CloseCode::Normal => println!("The client is done with the connection."),
-            CloseCode::Away => println!("The client is leaving the site."),
-            CloseCode::Abnormal => {
-                println!("Closing handshake failed! Unable to obtain closing status from client.")
-            }
-            _ => println!("The client encountered an error: {}", reason),
-        }
-
-        if let Some(id) = &self.id {
-            println!(
-                "Websocket client disconnected. [ID: {} // {}]",
-                id, self.internal
-            );
-            unsafe {
-                let mut map = CLIENTS.get_mut().unwrap().write().unwrap();
-                let arr = map.get_mut(&id.clone()).unwrap();
-
-                if arr.len() == 1 {
-                    map.remove(&id.clone());
-                } else {
-                    let index = arr.iter().position(|x| x.id == self.internal).unwrap();
-                    arr.remove(index);
-                    println!(
-                        "User [{}] is still connected {} times",
-                        self.id.as_ref().unwrap(),
-                        arr.len()
-                    );
-                }
-            }
-        }
-    }
-
-    fn on_error(&mut self, err: Error) {
-        println!("The server encountered an error: {:?}", err);
-    }
-}
-
-pub fn launch_server() {
-    unsafe {
-        if CLIENTS.set(RwLock::new(HashMap::new())).is_err() {
-            panic!("Failed to set CLIENTS map!");
-        }
-    }
-
-    listen("192.168.0.10:9999", |out| Server {
-        out: out,
-        id: None,
-        internal: Ulid::new().to_string(),
-    })
-    .unwrap()
-}
-
-pub fn send_message(id: String, message: String) -> std::result::Result<(), ()> {
-    unsafe {
-        let map = CLIENTS.get().unwrap().read().unwrap();
-        if map.contains_key(&id) {
-            let arr = map.get(&id).unwrap();
-
-            for item in arr {
-                if item.out.send(message.clone()).is_err() {
-                    return Err(());
-                }
-            }
-        }
-
-        Ok(())
-    }
-}
-
-// ! TODO: WRITE THREADED QUEUE SYSTEM
-// ! FETCH RECIPIENTS HERE INSTEAD OF IN METHOD
-
-pub fn queue_message(ids: Vec<String>, message: String) {
-    for id in ids {
-        send_message(id, message.clone())
-            .expect("uhhhhhhhhhh can i get uhhhhhhhhhhhhhhhhhh mcdonald cheese burger with fries");
-    }
-}