import random
import string
from django.db.models.signals import post_save
# from django.db.transaction import DatabaseError
from django.dispatch import receiver
from django.conf import settings
# from django.apps import apps
# from django.db.models import Q

from .models import Club, FailedApiCall, Log
import requests

# Others

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=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':
            if hasattr(instance, 'discord_string'):
                message = f'New {instance.__class__.__name__} created: {instance.discord_string()}'
            else:
                message = "no message. Please configure 'discord_string' on your instance"
            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}'
        )