-- Create the users table.
-- Uses TEXT for role with a CHECK constraint instead of a custom ENUM type
-- to simplify migrations and avoid Postgres enum type evolution issues.

CREATE TABLE users (
    id           UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    email        TEXT NOT NULL UNIQUE,
    display_name TEXT,
    role         TEXT NOT NULL DEFAULT 'user' CHECK (role IN ('user', 'admin')),
    created_at   TIMESTAMPTZ NOT NULL DEFAULT now(),
    updated_at   TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX idx_users_email ON users(email);