-- Your SQL goes here
-- Table des utilisateurs
CREATE TABLE users (
    user_id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(50) NOT NULL UNIQUE,
    password_hash VARCHAR(255) NOT NULL,
    email VARCHAR(100) NOT NULL UNIQUE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Table des serveurs
CREATE TABLE servers (
    server_id INT AUTO_INCREMENT PRIMARY KEY,
    server_name VARCHAR(100) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Table des canaux
CREATE TABLE channels (
    channel_id INT AUTO_INCREMENT PRIMARY KEY,
    server_id INT NOT NULL,
    channel_name VARCHAR(100) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (server_id) REFERENCES servers(server_id)
);

-- Table des messages
CREATE TABLE messages (
    message_id INT AUTO_INCREMENT PRIMARY KEY,
    channel_id INT NOT NULL,
    user_id INT NOT NULL,
    content TEXT NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (channel_id) REFERENCES channels(channel_id),
    FOREIGN KEY (user_id) REFERENCES users(user_id)
);

-- Table des membres de serveur
CREATE TABLE server_members (
    server_member_id INT AUTO_INCREMENT PRIMARY KEY,
    server_id INT NOT NULL,
    user_id INT NOT NULL,
    joined_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (server_id) REFERENCES servers(server_id),
    FOREIGN KEY (user_id) REFERENCES users(user_id)
);

-- Table des membres de canal
CREATE TABLE channel_members (
    channel_member_id INT AUTO_INCREMENT PRIMARY KEY,
    channel_id INT NOT NULL,
    user_id INT NOT NULL,
    joined_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (channel_id) REFERENCES channels(channel_id),
    FOREIGN KEY (user_id) REFERENCES users(user_id)
);

-- Table des rôles
CREATE TABLE roles (
    role_id INT AUTO_INCREMENT PRIMARY KEY,
    server_id INT NOT NULL,
    role_name VARCHAR(50) NOT NULL,
    FOREIGN KEY (server_id) REFERENCES servers(server_id)
);

-- Table des relations utilisateur-rôle
CREATE TABLE user_roles (
    user_role_id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    role_id INT NOT NULL,
    FOREIGN KEY (user_id) REFERENCES users(user_id),
    FOREIGN KEY (role_id) REFERENCES roles(role_id)
);