import os
from django.conf import settings
from django.db import models
from django.utils.text import slugify
from django.db.models.signals import pre_save
from django.dispatch import receiver
from transliterate import translit
from routes.constants.account_types import account_types
from django.contrib.auth.models import User
from routes.models import Route

class FAQ (models.Model):
    title = models.CharField(max_length=250)
    content = models.CharField(max_length=800)
    
    class Meta:
        verbose_name = 'FAQ'
        verbose_name_plural = 'FAQs'
        ordering = ['id']

    def __str__(self):
        return self.title
    

class News(models.Model):
    titleImage = models.ImageField(upload_to='uploads/news/images/', verbose_name="Главная картинка")
    title = models.CharField(max_length=100, verbose_name="Заголовок")
    content = models.TextField(max_length=1000, verbose_name="Контент статьи")
    slug = models.SlugField(max_length=255, null=True, blank=True, editable=False)
    created_at = models.DateTimeField(auto_now_add=True, null=True, blank=True)
    filename = models.CharField(max_length=255, blank=True)
    path = models.CharField(max_length=255, blank=True)
    
    class Meta:
        verbose_name = 'Новость'
        verbose_name_plural = 'Новости'
        ordering = ['id']
    
    def __str__(self):
        return self.title

    def save(self, *args, **kwargs):
        super().save(*args, **kwargs)  #сохраняем изображение
        
        # генерируем путь к файлу если удалось его сохранить
        if self.titleImage:
            self.filename = os.path.basename(self.titleImage.name)
            self.path = f'{settings.BASE_URL}{settings.MEDIA_URL}{self.titleImage.name}'
            super().save(*args, **kwargs)   # записываем путь и имя файла в базу
        else:
            self.filename = ''
            self.path = ''

@receiver(pre_save, sender=News)
def generate_slug(sender, instance, **kwargs):
    if not instance.slug:
        # транслит с русского на латиницу
        transliterated_title = translit(instance.title, 'ru', reversed=True)
        # создаем слаг и заменяем пробелы на дефисы
        instance.slug = slugify(transliterated_title)
        

class Pricing(models.Model):
    plan = models.CharField(max_length=10, choices=account_types)
    price = models.IntegerField()
    is_popular = models.BooleanField(default=False)
    duration = models.CharField(default='7 дней', verbose_name='Длительность подписки (в днях)')
    duration_hours = models.IntegerField(default=168, verbose_name='Длительность подписки (в часах)')
    features = models.ManyToManyField('Feature', related_name='pricing_plans', verbose_name='Свойства')
    highlight_limit = models.IntegerField(default=5, null=True, verbose_name='Лимит выделений в месяц')
    rising_limit = models.IntegerField(default=5, null=True, verbose_name='Лимит поднятий в месяц')
    
    class Meta:
        verbose_name = 'Тарифный план'
        verbose_name_plural = 'Тарифные планы'
        
    def __str__(self):
        return self.plan
    
class Feature(models.Model):
    name = models.CharField(max_length=255, verbose_name='Название свойства')
    
    class Meta:
        verbose_name = 'Свойство'
        verbose_name_plural = 'Свойства'
        
    def __str__(self):
        return self.name

class Transactions(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE, verbose_name='Пользователь')
    amount = models.DecimalField(max_digits=10, decimal_places=2, verbose_name='Сумма')
    plan = models.ForeignKey(Pricing, on_delete=models.CASCADE, verbose_name='Тарифный план')
    status = models.CharField(max_length=255, verbose_name='Статус', choices=[('success', 'Успешно'), ('failed', 'Отклонено')])
    created_at = models.DateTimeField(auto_now_add=True, verbose_name='Дата создания')
    
    class Meta:
        verbose_name = 'Транзакция'
        verbose_name_plural = 'Транзакции'
        ordering = ['id']
        
    def __str__(self):
        return f'{self.user} - {self.amount}'

class RoutePromotionLog(models.Model):
    ACTION_CHOICES = [
        ('highlight', 'Выделение'),
        ('rising', 'Поднятие'),
    ]
    
    route = models.ForeignKey(Route, on_delete=models.CASCADE, related_name='promotion_logs')
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    action_type = models.CharField(max_length=20, choices=ACTION_CHOICES)
    created_at = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return f"{self.user} - {self.action_type} for route {self.route.id} at {self.created_at}"