-- Создание базы данных
CREATE DATABASE IF NOT EXISTS hotel;
USE hotel;

-- Таблица Administrators
CREATE TABLE Administrators (
    admin_id INT AUTO_INCREMENT PRIMARY KEY,
    full_name VARCHAR(150) NOT NULL,
    passport_number VARCHAR(20) UNIQUE NOT NULL,
    address TEXT NOT NULL,
    phone_number VARCHAR(15) UNIQUE NOT NULL,
    email VARCHAR(100) UNIQUE NOT NULL,
    login VARCHAR(20) UNIQUE NOT NULL,
    password VARCHAR(255) NOT NULL,
    registration_code VARCHAR(50) UNIQUE NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);

-- Таблица Receptionists
CREATE TABLE Receptionists (
    receptionist_id INT AUTO_INCREMENT PRIMARY KEY,
    full_name VARCHAR(150) NOT NULL,
    passport_number VARCHAR(20) UNIQUE NOT NULL,
    address TEXT NOT NULL,
    phone_number VARCHAR(15) UNIQUE NOT NULL,
    email VARCHAR(100) UNIQUE NOT NULL,
    login VARCHAR(20) UNIQUE NOT NULL,
    password VARCHAR(255) NOT NULL,
    admin_id INT NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (admin_id) REFERENCES Administrators(admin_id) ON DELETE CASCADE
);

-- Таблица Cleaners
CREATE TABLE Cleaners (
    cleaner_id INT AUTO_INCREMENT PRIMARY KEY,
    full_name VARCHAR(150) NOT NULL,
    phone_number VARCHAR(15) UNIQUE NOT NULL,
    email VARCHAR(100) UNIQUE NOT NULL,
    status ENUM('Free', 'Busy') DEFAULT 'Free',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);


-- Таблица Rooms
CREATE TABLE Rooms (
    room_id INT AUTO_INCREMENT PRIMARY KEY,
    room_number INT UNIQUE NOT NULL,
    available BOOLEAN DEFAULT TRUE,
    status ENUM('Available', 'Occupied', 'Maintenance') DEFAULT 'Available',
    price DECIMAL(10,2) NOT NULL,
    bed_type ENUM('Single', 'Double', 'Queen', 'King', 'Twin') NOT NULL,
    room_type VARCHAR(50),
    admin_id INT NOT NULL,
    receptionist_id INT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (admin_id) REFERENCES Administrators(admin_id) ON DELETE SET NULL,
    FOREIGN KEY (receptionist_id) REFERENCES Receptionists(receptionist_id) ON DELETE SET NULL
);
-- Таблица Cleaning_Schedules
CREATE TABLE Cleaning_Schedules (
    schedule_id INT AUTO_INCREMENT PRIMARY KEY,
    room_id INT NOT NULL,
    cleaner_id INT NOT NULL,
    scheduled_time DATETIME NOT NULL,
    status ENUM('Scheduled', 'In Progress', 'Completed') DEFAULT 'Scheduled',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (room_id) REFERENCES Rooms(room_id) ON DELETE CASCADE,
    FOREIGN KEY (cleaner_id) REFERENCES Cleaners(cleaner_id) ON DELETE CASCADE
);



-- Таблица Room_Images
CREATE TABLE Room_Images (
    image_id INT AUTO_INCREMENT PRIMARY KEY,
    room_id INT NOT NULL,
    image_url VARCHAR(255) NOT NULL,
    is_primary BOOLEAN DEFAULT FALSE,
    FOREIGN KEY (room_id) REFERENCES Rooms(room_id) ON DELETE CASCADE
);

-- Таблица Customers
CREATE TABLE Customers (
    customer_id INT AUTO_INCREMENT PRIMARY KEY,
    full_name VARCHAR(100) NOT NULL,
    phone VARCHAR(15) UNIQUE NOT NULL,
    email VARCHAR(100) UNIQUE,
    gender ENUM('Male', 'Female', 'Other'),
    country VARCHAR(50),
    address TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    receptionist_id INT,
    FOREIGN KEY (receptionist_id) REFERENCES Receptionists(receptionist_id) ON DELETE SET NULL
);

-- Таблица Reservations
CREATE TABLE Reservations (
    reservation_id INT AUTO_INCREMENT PRIMARY KEY,
    customer_id INT NOT NULL,
    room_id INT NOT NULL,
    check_in DATE NOT NULL,
    check_out DATE NOT NULL,
    status ENUM('Booked', 'Checked-in', 'Checked-out', 'Cancelled') DEFAULT 'Booked',
    total_amount DECIMAL(10,2),
    deposit DECIMAL(10,2),
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    receptionist_id INT,
    FOREIGN KEY (customer_id) REFERENCES Customers(customer_id) ON DELETE CASCADE,
    FOREIGN KEY (room_id) REFERENCES Rooms(room_id) ON DELETE CASCADE,
    FOREIGN KEY (receptionist_id) REFERENCES Receptionists(receptionist_id) ON DELETE SET NULL
);

-- Таблица Payments
CREATE TABLE Payments (
    payment_id INT AUTO_INCREMENT PRIMARY KEY,
    reservation_id INT NOT NULL,
    amount DECIMAL(10, 2) NOT NULL,
    payment_date DATE NOT NULL,
    payment_method ENUM('Cash', 'Credit Card', 'Debit Card', 'Online Transfer') NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (reservation_id) REFERENCES Reservations(reservation_id) ON DELETE CASCADE
);

-- Таблица Cleaning_Actions
CREATE TABLE Cleaning_Actions (
    action_id INT AUTO_INCREMENT PRIMARY KEY,
    reservation_id INT NOT NULL,
    room_id INT NOT NULL,
    cleaner_id INT NOT NULL,
    action_type ENUM('Manual Assignment', 'Auto Assignment') NOT NULL,
    scheduled_time DATETIME NOT NULL,
    status ENUM('Scheduled', 'In Progress', 'Completed') DEFAULT 'Scheduled',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (reservation_id) REFERENCES Reservations(reservation_id) ON DELETE CASCADE,
    FOREIGN KEY (room_id) REFERENCES Rooms(room_id) ON DELETE CASCADE,
    FOREIGN KEY (cleaner_id) REFERENCES Cleaners(cleaner_id) ON DELETE CASCADE
);



Error Code: 1830. Column 'admin_id' cannot be NOT NULL: needed in a foreign key constraint 'rooms_ibfk_1' SET NULL