-- 042: SMS verification codes table
CREATE TABLE IF NOT EXISTS sms_verifications (
    id BIGSERIAL PRIMARY KEY,
    phone VARCHAR(20) NOT NULL,
    code VARCHAR(255) NOT NULL,
    type VARCHAR(20) NOT NULL CHECK (type IN ('REGISTER', 'LOGIN', 'RESET_PASSWORD', 'CHANGE_PHONE')),
    expires_at TIMESTAMPTZ NOT NULL,
    verified_at TIMESTAMPTZ,
    attempts INT NOT NULL DEFAULT 0,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX idx_sms_verif_phone_type ON sms_verifications(phone, type);
CREATE INDEX idx_sms_verif_expires ON sms_verifications(expires_at);