Servers: Add invites. Create, view and join.

src/routes/invites/invite_join.rs

@@ -0,0 +1,31 @@
+use crate::database::*;
+use crate::util::result::Result;
+
+use rocket_contrib::json::JsonValue;
+
+#[post("/<target>")]
+pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
+    let target = target.fetch_invite().await?;
+
+    match target {
+        Invite::Server {
+            channel,
+            ..
+        } => {
+            let channel = Ref::from_unchecked(channel).fetch_channel().await?;
+            let server = if let Channel::TextChannel { server, .. } = &channel {
+                Ref::from_unchecked(server.clone()).fetch_server().await?
+            } else {
+                unreachable!()
+            };
+
+            server.join_member(&user.id).await?;
+
+            Ok(json!({
+                "channel": channel,
+                "server": server
+            }))
+        }
+        _ => unreachable!(),
+    }
+}