Desacoblar playlists de sessions i afegir slow jams

folkugat_web/dal/sql/sessions/ddl.py

@@ -4,6 +4,7 @@ from folkugat_web.dal.sql import Connection, get_connection
 def create_db(con: Connection | None = None):
     with get_connection(con) as con:
         create_sessions_table(con)
+        create_session_playlists_table(con)
 
 
 def create_sessions_table(con: Connection):
@@ -22,3 +23,18 @@ def create_sessions_table(con: Connection):
     """
     cur = con.cursor()
     _ = cur.execute(query)
+
+
+def create_session_playlists_table(con: Connection):
+    query = """
+      CREATE TABLE IF NOT EXISTS session_playlists (
+        session_id INTEGER,
+        playlist_type TEXT,
+        playlist_id INTEGER NOT NULL,
+        PRIMARY KEY (session_id, playlist_type),
+        FOREIGN KEY (session_id) REFERENCES sessions(id) ON DELETE CASCADE,
+        FOREIGN KEY (playlist_id) REFERENCES playlists(id) ON DELETE CASCADE
+    )
+    """
+    cur = con.cursor()
+    _ = cur.execute(query)