#signals
@receiver(pre_save, sender=Blogger)
def prepare_blogger_chat(sender, instance, **kwargs):
    """
    Blogger saqlashdan oldin signal. 
    Agar blogger.user.user_type == 'blogger' bo'lsa, 
    uning chatini topib, undagi barcha qatnashchilarni o'chirib, 
    faqat bloggerning o'zini qo'shadi.
    """
    # Yangi yaratilayotgan Blogger uchun hali id bo'lmaydi
    if instance.id is None:
        # Yangi blogger, hali chati yo'q
        return
    
    if instance.user and instance.user.user_type == 'blogger':
        try:
            # Blogerning chatini topamiz
            # Ehtimol bo'lgan hamma chatlarini olamiz
            blogger_chat = Chat.objects.filter(participants=instance.user).first()
            if blogger_chat:
                blogger_chat.participants.clear()
                blogger_chat.participants.add(instance.user)
                blogger_chat.save()
        except Exception as e:
            print(f"Chat qayta sozlashda xatolik yuz berdi: {e}")
    

@receiver(post_save, sender=Blogger)
def update_blogger_chat(sender, instance, created, **kwargs):
    """
    Blogger saqlagandan keyin signal.
    Agar user.user_type == 'blogger' va saler.user_type == 'sales' bo'lsa,
    bloggerning chatini topib, unga salerni qo'shadi.
    """
    # Faqat blogerga tegishli user va saler mavjud bo'lsa
    if instance.user and instance.user.user_type == 'blogger' and instance.saler and instance.saler.user_type == 'sales':
        try:
            with transaction.atomic():
                blogger_chats = Chat.objects.filter(participants=instance.user)
                
                if not blogger_chats.exists():
                    chat = Chat.objects.create()
                    chat.participants.add(instance.user)
                else:
                    chat = blogger_chats.first()
                chat.participants.add(instance.saler)
                chat.save()
        except Exception as e:
            print(f"Bloggerning chatini yangilashda xatolik yuz berdi: {e}")

    elif instance.user and instance.user.user_type == 'manager' and instance.saler and instance.saler.user_type == 'sales':
        try:
            with transaction.atomic():
                bloggers = Blogger.objects.filter(manager=instance.user)
                for blogger in bloggers:
                    blogger.saler = instance.saler
                    blogger.save()  # Bu o'z navbatida ushbu signal uchun yangi chaqiruvlarni yaratadi
                    
        except Exception as e:
            print(f"Bloggerning chatini yangilashda xatolik yuz berdi: {e}")

version: "3.8"

services:
  python-app:
    build: .
    container_name: python_app
    ports:
      - "8081:8000"
    volumes:
      - .:/app
    working_dir: /app
    environment:
      - DB_HOST=host.docker.internal
      - DB_PORT=5432
      - DB_NAME=testdb
      - DB_USER=postgres
      - DB_PASSWORD=password
    extra_hosts:
      - "host.docker.internal:host-gateway"
    command: python app.py
    networks:
      - app-network

networks:
  app-network:
    driver: bridge