-- Sprint 3 Phase 3: Invite tokens for staff onboarding

CREATE TABLE invite_tokens (
    id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    user_id     UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    token       VARCHAR(64) NOT NULL UNIQUE,
    expires_at  TIMESTAMPTZ NOT NULL,
    used_at     TIMESTAMPTZ,
    created_at  TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX idx_invite_tokens_token ON invite_tokens(token);
CREATE INDEX idx_invite_tokens_user_id ON invite_tokens(user_id);