-- 用户表初始化
CREATE TABLE IF NOT EXISTS users (
    id SERIAL PRIMARY KEY,
    username VARCHAR(50) UNIQUE NOT NULL,
    password_hash VARCHAR(255) NOT NULL,
    email VARCHAR(100) UNIQUE,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- 插入测试用户（密码: 123456）
-- bcrypt hash: $2b$12$REwMlLDCbzR4UpL6MWnzE.AacihwpFvQhGs7vDKTwwyNMb1qBWOTm
INSERT INTO users (username, password_hash, email) 
VALUES ('admin', '$2b$12$REwMlLDCbzR4UpL6MWnzE.AacihwpFvQhGs7vDKTwwyNMb1qBWOTm', 'admin@example.com')
ON CONFLICT (username) DO NOTHING;