feat(onboard): implement onboarding routes

src/routes/onboard/complete.rs

@@ -1,9 +1,9 @@
-use revolt_quark::{EmptyResponse, Result};
+use revolt_quark::{EmptyResponse, Error, Result, models::User, Database};
 use crate::util::regex::RE_USERNAME;
 
 use mongodb::bson::doc;
 use rauth::entities::Session;
-use rocket::serde::json::Json;
+use rocket::{serde::json::Json, State};
 use serde::{Deserialize, Serialize};
 use validator::Validate;
 
@@ -14,6 +14,26 @@ pub struct Data {
 }
 
 #[post("/complete", data = "<data>")]
-pub async fn req(/*session: Session, user: Option<User>,*/ data: Json<Data>) -> Result<EmptyResponse> {
-    todo!()
+pub async fn req(db: &State<Database>, session: Session, user: Option<User>, data: Json<Data>) -> Result<EmptyResponse> {
+    if user.is_some() {
+        return Err(Error::AlreadyOnboarded)
+    }
+
+    let data = data.into_inner();
+    data.validate()
+        .map_err(|error| Error::FailedValidation { error })?;
+
+    if db.is_username_taken(&data.username).await? {
+        return Err(Error::UsernameTaken);
+    }
+
+    let user = User {
+        id: session.user_id,
+        username: data.username,
+        ..Default::default()
+    };
+
+    db.insert_user(&user)
+        .await
+        .map(|_| EmptyResponse)
 }

src/routes/onboard/hello.rs

@@ -1,7 +1,10 @@
 use rauth::entities::Session;
+use revolt_quark::models::User;
 use rocket::serde::json::Value;
 
 #[get("/hello")]
-pub async fn req(/*_session: Session, user: Option<User>*/) -> Value {
-    todo!()
+pub async fn req(_session: Session, user: Option<User>) -> Value {
+    json!({
+        "onboarding": user.is_none()
+    })
 }