-- Bảng users
CREATE TABLE users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    email VARCHAR(255) NOT NULL UNIQUE,
    password VARCHAR(255) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);

-- Bảng admins
CREATE TABLE admins (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    management_level VARCHAR(255) NOT NULL,
    contact_phone VARCHAR(255) NOT NULL,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
);

-- Bảng guests
CREATE TABLE guests (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    contact_phone VARCHAR(255) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
);

-- Bảng organizations
CREATE TABLE organizations (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    company_name VARCHAR(255) NOT NULL,
    company_address VARCHAR(255) NOT NULL,
    contact VARCHAR(255) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
);