feat(channels): implement fetch, edit, delete

src/routes/channels/channel_fetch.rs

@@ -1,8 +1,14 @@
-use revolt_quark::Result;
+use revolt_quark::{Error, Result, models::{User, Channel}, Ref, Database, perms, ChannelPermission};
 
-use rocket::serde::json::Value;
+use rocket::{serde::json::Json, State};
 
 #[get("/<target>")]
-pub async fn req(/*user: UserRef, target: Ref*/ target: String) -> Result<Value> {
-    todo!()
+pub async fn req(db: &State<Database>, user: User, target: Ref) -> Result<Json<Channel>> {
+    let target = target.as_channel(db).await?;
+
+    if perms(&user).channel(&target).calc_channel(db).await.get_view() {
+        Ok(Json(target))
+    } else {
+        Err(Error::MissingPermission { permission: ChannelPermission::View as i32 })
+    }
 }