schema.sql

-- Run this file in your MySQL database to create the necessary tables.
-- Example:
--   mysql -u root -p code < schema.sql

CREATE TABLE IF NOT EXISTS users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(100) NOT NULL,
    email VARCHAR(120) NOT NULL UNIQUE,
    password_hash VARCHAR(255) NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE IF NOT EXISTS history (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    feature VARCHAR(50) NOT NULL,
    input_language VARCHAR(50),
    output_language VARCHAR(50),
    input_code LONGTEXT,
    output_text LONGTEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_history_user
        FOREIGN KEY (user_id)
        REFERENCES users(id)
        ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE IF NOT EXISTS chats (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    user_message LONGTEXT,
    assistant_message LONGTEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_chats_user
        FOREIGN KEY (user_id)
        REFERENCES users(id)
        ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;