-- Create PushSubscriptions table
CREATE TABLE IF NOT EXISTS PushSubscriptions (
    id TEXT PRIMARY KEY,
    userId TEXT NOT NULL,
    endpoint TEXT NOT NULL,
    p256dh TEXT NOT NULL,
    auth TEXT NOT NULL,
    createdAt TEXT DEFAULT (datetime('now')),
    updatedAt TEXT DEFAULT (datetime('now'))
);

CREATE INDEX IF NOT EXISTS idx_push_subscriptions_userId ON PushSubscriptions(userId);