handle existing playlist name

server/app/api/playlist.py

@@ -5,13 +5,13 @@ Contains all the playlist routes.
 from flask import Blueprint, request
 from app import instances, api
 from app.lib import playlistlib
+from app import models
 
 playlist_bp = Blueprint("playlist", __name__, url_prefix="/")
 
 
 @playlist_bp.route("/playlists", methods=["GET"])
 def get_all_playlists():
-    print(api.PLAYLISTS)
     playlists = []
 
     for playlist in api.PLAYLISTS:
@@ -24,11 +24,22 @@ def get_all_playlists():
 @playlist_bp.route("/playlist/new", methods=["POST"])
 def create_playlist():
     data = request.get_json()
-
     playlist = {"name": data["name"], "description": [], "tracks": []}
 
-    instances.playlist_instance.insert_playlist(playlist)
-    return {"msg": "success"}
+    try:
+        p_in_db = instances.playlist_instance.get_playlist_by_name(playlist["name"])
+
+        if p_in_db:
+            raise Exception("Playlist already exists.")
+    except Exception as e:
+        return {"error": str(e)}, 409
+
+    upsert_id = instances.playlist_instance.insert_playlist(playlist)
+    p = instances.playlist_instance.get_playlist_by_id(upsert_id)
+
+    api.PLAYLISTS.append(models.Playlist(p))
+
+    return {"msg": "Playlist created successfully."}, 201
 
 
 @playlist_bp.route("/playlist/<playlist_id>/add", methods=["POST"])