-- Car PMS Database Schema
CREATE DATABASE IF NOT EXISTS car_pms;
USE car_pms;

CREATE TABLE IF NOT EXISTS users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(50) UNIQUE NOT NULL,
    password VARCHAR(255) NOT NULL,
    email VARCHAR(100) UNIQUE NOT NULL,
    role VARCHAR(20) DEFAULT 'staff',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS cars (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    make VARCHAR(50) NOT NULL,
    model VARCHAR(50) NOT NULL,
    year INT NOT NULL,
    plate_no VARCHAR(20) UNIQUE,
    current_mileage INT DEFAULT 0,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS maintenance_logs (
    id INT AUTO_INCREMENT PRIMARY KEY,
    car_id INT NOT NULL,
    service_date DATE NOT NULL,
    service_type VARCHAR(100) NOT NULL,
    cost DECIMAL(10, 2),
    mileage_at_service INT NOT NULL,
    notes TEXT,
    FOREIGN KEY (car_id) REFERENCES cars(id) ON DELETE CASCADE
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS usage_logs (
    id INT AUTO_INCREMENT PRIMARY KEY,
    car_id INT NOT NULL,
    log_date DATE NOT NULL,
    odometer_reading INT NOT NULL,
    FOREIGN KEY (car_id) REFERENCES cars(id) ON DELETE CASCADE
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS fuel_logs (
    id INT AUTO_INCREMENT PRIMARY KEY,
    car_id INT NOT NULL,
    log_date DATE NOT NULL,
    fuel_level DECIMAL(5,2),
    odometer_reading INT NOT NULL,
    fuel_added DECIMAL(10, 2),
    cost DECIMAL(10, 2),
    FOREIGN KEY (car_id) REFERENCES cars(id) ON DELETE CASCADE
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS settings (
    setting_key VARCHAR(50) PRIMARY KEY,
    setting_value INT NOT NULL,
    description VARCHAR(255),
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB;