CREATE TABLE IF NOT EXISTS users (
    id            SERIAL PRIMARY KEY,
    email         VARCHAR(255) NOT NULL UNIQUE,
    password_hash TEXT NOT NULL,
    name          VARCHAR(120) NOT NULL,
    created_at    TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE TABLE IF NOT EXISTS sessions (
    id         VARCHAR(64) PRIMARY KEY,
    user_id    INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    expires_at TIMESTAMPTZ NOT NULL,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_sessions_user_id ON sessions (user_id);
CREATE INDEX IF NOT EXISTS idx_sessions_expires_at ON sessions (expires_at);