-- Rollback: Remove UUID columns and revert rename

-- Step 1: Drop UUID-related indexes
DROP INDEX IF EXISTS idx_song_uuid;
DROP INDEX IF EXISTS idx_song_soundtrack_uuid;
DROP INDEX IF EXISTS idx_soundtrack_uuid;
DROP INDEX IF EXISTS idx_song_soundtrack_id;
DROP INDEX IF EXISTS idx_song_path;

-- Step 1.5: Remove NOT NULL constraints before dropping columns (Issue #28 rollback)
ALTER TABLE song ALTER COLUMN soundtrack_uuid DROP NOT NULL;
ALTER TABLE song ALTER COLUMN uuid DROP NOT NULL;
ALTER TABLE soundtrack ALTER COLUMN uuid DROP NOT NULL;

-- Step 2: Drop UUID-related constraints
ALTER TABLE song DROP CONSTRAINT IF EXISTS song_soundtrack_path_unique;
ALTER TABLE song DROP CONSTRAINT IF EXISTS song_soundtrack_uuid_fkey;
ALTER TABLE soundtrack DROP CONSTRAINT IF EXISTS soundtrack_uuid_unique;

-- Step 3: Drop UUID columns from song table
ALTER TABLE song DROP COLUMN IF EXISTS soundtrack_uuid;
ALTER TABLE song DROP COLUMN IF EXISTS uuid;

-- Step 4: Drop UUID column from soundtrack table
ALTER TABLE soundtrack DROP COLUMN IF EXISTS uuid;

-- Step 5: Drop the uuid-based primary key
ALTER TABLE song DROP CONSTRAINT song_pkey;

-- Step 6: Restore composite primary key on song
ALTER TABLE song ADD CONSTRAINT song_pkey PRIMARY KEY (soundtrack_id, path);

-- Step 7: Drop foreign key constraint
ALTER TABLE song DROP CONSTRAINT IF EXISTS song_soundtrack_id_fkey;

-- Step 8: Revert rename operations
-- Revert song_list table references
ALTER TABLE song_list RENAME COLUMN soundtrack_name TO game_name;

-- Revert song table: rename soundtrack_id back to game_id
ALTER TABLE song RENAME COLUMN soundtrack_id TO game_id;

-- Revert columns in game table
ALTER TABLE game RENAME COLUMN soundtrack_name TO game_name;

-- Revert primary key sequence
ALTER SEQUENCE game_id_seq RENAME TO soundtrack_id_seq;

-- Revert: Rename soundtrack table back to game
ALTER TABLE soundtrack RENAME TO game;

-- Revert foreign key constraint
ALTER TABLE song DROP CONSTRAINT IF EXISTS song_game_id_fkey;
ALTER TABLE song ADD CONSTRAINT song_game_id_fkey 
    FOREIGN KEY (game_id) REFERENCES game(id);

-- Revert indexes
ALTER INDEX IF EXISTS idx_soundtrack_deleted RENAME TO idx_game_deleted;
ALTER INDEX IF EXISTS idx_soundtrack_hash RENAME TO idx_game_hash;
ALTER INDEX IF EXISTS idx_soundtrack_path RENAME TO idx_game_path;
ALTER INDEX IF EXISTS idx_soundtrack_name RENAME TO idx_game_name;
ALTER INDEX IF EXISTS idx_song_soundtrack_id RENAME TO idx_song_game_id;
ALTER INDEX IF EXISTS idx_song_soundtrack_id_song_name RENAME TO idx_song_game_id_song_name;
ALTER INDEX IF EXISTS song_list_soundtrack_name_idx RENAME TO song_list_game_name_idx;