-- 사용자 인증 + 포트폴리오 (5~20명 지인 대상, JWT 기반)
-- idempotent: 여러 번 실행해도 안전

CREATE TABLE IF NOT EXISTS users (
    id            SERIAL PRIMARY KEY,
    email         VARCHAR(255) UNIQUE NOT NULL,
    password_hash VARCHAR(255) NOT NULL,
    role          VARCHAR(20)  NOT NULL DEFAULT 'user',
    created_at    TIMESTAMPTZ  NOT NULL DEFAULT NOW(),
    last_login_at TIMESTAMPTZ
);

CREATE TABLE IF NOT EXISTS user_portfolio (
    id          SERIAL PRIMARY KEY,
    user_id     INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    stock_code  VARCHAR(10)   NOT NULL,
    stock_name  VARCHAR(100)  NOT NULL DEFAULT '',
    buy_price   INTEGER       NOT NULL,
    qty         INTEGER       NOT NULL,
    memo        TEXT          DEFAULT '',
    created_at  TIMESTAMPTZ   NOT NULL DEFAULT NOW(),
    updated_at  TIMESTAMPTZ   NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_user_portfolio_user ON user_portfolio(user_id);
CREATE INDEX IF NOT EXISTS idx_user_portfolio_user_code ON user_portfolio(user_id, stock_code);