from django.db import models
from users.models import User
from django.core.validators import MinValueValidator, MaxValueValidator


class PMSConfiguration(models.Model):
    name = models.CharField(max_length=255, verbose_name="Название PMS")
    parser_settings = models.JSONField(default=dict, verbose_name="Настройки разбора данных")
    description = models.TextField(blank=True, null=True, verbose_name="Описание")
    created_at = models.DateTimeField(auto_now_add=True, verbose_name="Дата создания")

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = "PMS система"
        verbose_name_plural = "PMS системы"


class APIConfiguration(models.Model):
    name = models.CharField(max_length=255, verbose_name="Название API")
    url = models.URLField(verbose_name="URL API")
    token = models.CharField(max_length=255, blank=True, null=True, verbose_name="Токен")
    username = models.CharField(max_length=255, blank=True, null=True, verbose_name="Логин")
    password = models.CharField(max_length=255, blank=True, null=True, verbose_name="Пароль")
    last_updated = models.DateTimeField(auto_now=True, verbose_name="Дата последнего обновления")

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = "Конфигурация API"
        verbose_name_plural = "Конфигурации API"


class Hotel(models.Model):
    name = models.CharField(max_length=255, verbose_name="Название отеля")
    api = models.OneToOneField(
        APIConfiguration,
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
        verbose_name="API",
        help_text="API, связанный с этим отелем."
    )
    created_at = models.DateTimeField(auto_now_add=True, verbose_name="Создан")
    pms = models.ForeignKey(PMSConfiguration, on_delete=models.SET_NULL, null=True, blank=True, verbose_name="PMS система")

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = "Отель"
        verbose_name_plural = "Отели"


class PMSIntegrationLog(models.Model):
    hotel = models.ForeignKey(Hotel, on_delete=models.CASCADE, verbose_name="Отель")
    checked_at = models.DateTimeField(auto_now_add=True, verbose_name="Время проверки")
    status = models.CharField(max_length=50, verbose_name="Статус", choices=[('success', 'Успех'), ('error', 'Ошибка')])
    message = models.TextField(verbose_name="Сообщение", blank=True, null=True)

    def __str__(self):
        return f"{self.hotel.name} - {self.status} - {self.checked_at}"

    class Meta:
        verbose_name = "Журнал интеграции PMS"
        verbose_name_plural = "Журналы интеграции PMS"
        indexes = [
            models.Index(fields=['hotel']),
            models.Index(fields=['checked_at']),
            models.Index(fields=['status']),
        ]


class UserHotel(models.Model):
    user = models.ForeignKey(
        User, on_delete=models.CASCADE, related_name="user_hotels", verbose_name="Пользователь"
    )
    hotel = models.ForeignKey(
        Hotel, on_delete=models.CASCADE, related_name="hotel_users", verbose_name="Отель"
)

    def __str__(self):
        return f"{self.user.username} - {self.hotel.name}"

    class Meta:
        verbose_name = "Пользователь отеля"
        verbose_name_plural = "Пользователи отелей"


class APIRequestLog(models.Model):
    api = models.ForeignKey(APIConfiguration, on_delete=models.CASCADE, verbose_name="API")
    request_time = models.DateTimeField(auto_now_add=True, verbose_name="Время запроса")
    response_status = models.IntegerField(verbose_name="HTTP статус ответа", validators=[MinValueValidator(100), MaxValueValidator(599)])
    response_data = models.JSONField(verbose_name="Данные ответа", blank=True, null=True)

    def __str__(self):
        return f"{self.api.name} - {self.request_time}"

    class Meta:
        verbose_name = "Журнал запросов API"
        verbose_name_plural = "Журналы запросов API"
        indexes = [
            models.Index(fields=['api']),
            models.Index(fields=['request_time']),
        ]


class Reservation(models.Model):
    hotel = models.ForeignKey(Hotel, on_delete=models.CASCADE, verbose_name="Отель")
    reservation_id = models.BigIntegerField(unique=True, verbose_name="ID бронирования")
    room_number = models.CharField(max_length=50, verbose_name="Номер комнаты")
    room_type = models.CharField(max_length=255, verbose_name="Тип комнаты")
    check_in = models.DateTimeField(verbose_name="Дата заезда")
    check_out = models.DateTimeField(verbose_name="Дата выезда")
    status = models.CharField(max_length=50, verbose_name="Статус")
    price = models.DecimalField(max_digits=10, decimal_places=2, null=True, blank=True, verbose_name="Цена")
    discount = models.DecimalField(max_digits=10, decimal_places=2, null=True, blank=True, verbose_name="Скидка")

    def __str__(self):
        return f"Бронирование {self.reservation_id} - {self.hotel.name}"

    class Meta:
        verbose_name = "Бронирование"
        verbose_name_plural = "Бронирования"


class Guest(models.Model):
    reservation = models.ForeignKey(Reservation, on_delete=models.CASCADE, related_name="guests", verbose_name="Бронирование")
    name = models.CharField(max_length=255, verbose_name="Имя гостя")
    birthdate = models.DateField(null=True, blank=True, verbose_name="Дата рождения")
    phone = models.CharField(max_length=50, null=True, blank=True, verbose_name="Телефон")
    email = models.EmailField(null=True, blank=True, verbose_name="Email")

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = "Гость"
        verbose_name_plural = "Гости"