ALTER TABLE users
DROP COLUMN IF EXISTS email_verified;

CREATE TABLE IF NOT EXISTS account_tokens (
    id SERIAL PRIMARY KEY,
    user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    purpose VARCHAR(30) NOT NULL CHECK (purpose = 'password_reset'),
    token_hash TEXT NOT NULL UNIQUE,
    expires_at TIMESTAMP NOT NULL,
    used_at TIMESTAMP,
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);

DELETE FROM account_tokens WHERE purpose = 'verify_email';

ALTER TABLE account_tokens DROP CONSTRAINT IF EXISTS account_tokens_purpose_check;
ALTER TABLE account_tokens ADD CONSTRAINT account_tokens_purpose_check
CHECK (purpose = 'password_reset');

CREATE INDEX IF NOT EXISTS idx_account_tokens_lookup
ON account_tokens (token_hash, purpose, expires_at);

ALTER TABLE concert_attendance
DROP CONSTRAINT IF EXISTS concert_attendance_status_check;

ALTER TABLE concert_attendance
ADD CONSTRAINT concert_attendance_status_check
CHECK (status IN ('attending', 'maybe', 'ticket_search', 'ticket_offer'));