-- T0326: Create Track History Database Model
-- Create table track_history for tracking track modifications

-- Table track_history
CREATE TABLE IF NOT EXISTS track_history (
    id BIGSERIAL PRIMARY KEY,
    track_id BIGINT NOT NULL REFERENCES tracks(id) ON DELETE CASCADE,
    user_id BIGINT NOT NULL REFERENCES users(id) ON DELETE SET NULL,
    action VARCHAR(50) NOT NULL,
    old_value TEXT,
    new_value TEXT,
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);

-- Indexes for performance
CREATE INDEX IF NOT EXISTS idx_track_history_track_id ON track_history(track_id);
CREATE INDEX IF NOT EXISTS idx_track_history_user_id ON track_history(user_id);
CREATE INDEX IF NOT EXISTS idx_track_history_action ON track_history(action);
CREATE INDEX IF NOT EXISTS idx_track_history_created_at ON track_history(created_at DESC);
CREATE INDEX IF NOT EXISTS idx_track_history_track_created ON track_history(track_id, created_at DESC);