import random
import string
from django.db.models.signals import post_save, pre_delete
from django.dispatch import receiver
from django.conf import settings
from django.apps import apps
from django.utils import timezone

from .models import Club, FailedApiCall, CustomUser, Log, DataAccess, ModelLog
import requests

def generate_unique_code():
    characters = string.ascii_letters + string.digits
    while True:
        code = ''.join(random.sample(characters, 3))
        if not Club.objects.filter(broadcast_code=code).exists():
            return code

@receiver(post_save, sender=Club)
def assign_unique_code(sender, instance, created, **kwargs):
    if created and not instance.broadcast_code:
        instance.broadcast_code = generate_unique_code()
        instance.save()

DISCORD_FAILED_CALLS_WEBHOOK_URL = 'https://discord.com/api/webhooks/1248191778134163486/sSoTL6cULCElWr2YFwyllsg7IXxHcCx_YMDJA_cUHtVUU4WOfN-5M7drCJuwNBBfAk9a'
DISCORD_LOGS_WEBHOOK_URL = 'https://discord.com/api/webhooks/1257987637449588736/TtOUwzYgSlQH2d3Ps7SfIKRcFALQVa3hfkC-j9K4_UAcWtsfiw4v8NUPbnX2_ZPOYzuv'

@receiver(post_save, sender=FailedApiCall)
def notify_discord_on_create(sender, instance, created, **kwargs):
    notify_object_creation_on_discord(created, instance, DISCORD_FAILED_CALLS_WEBHOOK_URL)

# @receiver(post_save, sender=CustomUser)
# def notify_user_creation_on_discord(sender, instance, created, **kwargs):
#     notify_object_creation_on_discord(created, instance, DISCORD_LOGS_WEBHOOK_URL)

@receiver(post_save, sender=Log)
def notify_log_creation_on_discord(sender, instance, created, **kwargs):
    notify_object_creation_on_discord(created, instance, DISCORD_LOGS_WEBHOOK_URL)

# WARNING: using this method requires the instance to have a discord_string method
def notify_object_creation_on_discord(created, instance, webhook_url):
    if created:
        default_db_engine = settings.DATABASES['default']['ENGINE']
        if default_db_engine != 'django.db.backends.sqlite3':
            message = f'New {instance.__class__.__name__} created: {instance.discord_string()}'
            send_discord_message(webhook_url, message)

def send_discord_message(webhook_url, content):
    data = {
        "content": content
    }
    response = requests.post(webhook_url, json=data)
    if response.status_code != 204:
        raise ValueError(
            f'Error sending message to Discord webhook: {response.status_code}, {response.text}'
        )

@receiver(pre_delete, sender=DataAccess)
def data_access_pre_delete(sender, instance, **kwargs):
    print('>>> delete data access signal')
    try:
        model_class = apps.get_model('tournaments', instance.model_name)
        obj = model_class.objects.get(id=instance.model_id)
        parent_model, parent_id = obj.get_parent_reference()
        store_id = None
        if hasattr(obj, 'store_id'):
            store_id = obj.store_id

        ModelLog.objects.create(
            user=instance.shared_with,
            model_id=instance.model_id,
            model_name=instance.model_name,
            operation='REVOKE_ACCESS',
            date=timezone.now(),
            store_id=store_id,
            parent_model_id=parent_id,
            parent_model_name=parent_model
        )
    except Exception as e:
        print(f"Error in data_access_pre_delete signal: {e}")