Servers: Add invites. Create, view and join.

src/routes/invites/invite_fetch.rs

@@ -0,0 +1,56 @@
+use crate::database::*;
+use crate::util::result::Result;
+
+use rocket_contrib::json::JsonValue;
+use serde::Serialize;
+
+#[derive(Serialize, Debug, Clone)]
+#[serde(tag = "type")]
+pub enum InviteResponse {
+    Server {
+        server_name: String,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        server_icon: Option<File>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        server_banner: Option<File>,
+        channel_name: String,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        channel_description: Option<String>,
+        user_name: String,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        user_avatar: Option<File>
+    }
+}
+
+#[get("/<target>")]
+pub async fn req(target: Ref) -> Result<JsonValue> {
+    let target = target.fetch_invite().await?;
+
+    match target {
+        Invite::Server {
+            channel,
+            creator,
+            ..
+        } => {
+            let channel = Ref::from_unchecked(channel).fetch_channel().await?;
+            let creator = Ref::from_unchecked(creator).fetch_user().await?;
+
+            if let Channel::TextChannel { server, name, description, .. } = channel {
+                let server = Ref::from_unchecked(server).fetch_server().await?;
+
+                Ok(json!(InviteResponse::Server {
+                    server_name: server.name,
+                    server_icon: server.icon,
+                    server_banner: server.banner,
+                    channel_name: name,
+                    channel_description: description,
+                    user_name: creator.username,
+                    user_avatar: creator.avatar
+                }))
+            } else {
+                unreachable!()
+            }
+        }
+        _ => unreachable!(),
+    }
+}