/messages/send now correctyl tells the user they're wrong about sendingmessages to a non-existant channel

server-api/db/src/messages.rs

@@ -124,15 +124,32 @@ impl Message {
             (time, content, author_id, channel_id)
             VALUES (:time, :content, :author, :channel)";
         let now = Utc::now().timestamp();
-
-        conn.prep_exec(q, params!{
+    
+        let res = conn.prep_exec(q, params!{
             "time" => now,
             "content" => content,
             "author" => uid,
             "channel" => cid
-        }).await?;
+        }).await;
+        if let Err(e) = res {
+            return match e {
+                SqlError::Server(err) => {
+                    if err.code == 1452 {
+                        return Ok(Response::RestrictedInput("Channel not found".into()))
+                    }
+                    else {
+                        Ok(Response::Other(sql_err!("db::messages::send")))
+                    }
+                },
+                _ => Ok(Response::Other(sql_err!("db::messages::send")))
+            }
+            
+        }
+        // all good response
+        else {
+            return Ok(Response::Empty);
+        }
 
-        return Ok(Response::Empty);
     }
 }