from django.db.models.signals import post_migrate
from django.dispatch import receiver
from config.settings import SEED_DATA, ROOT_DIR, get_secret
from django_celery_beat.models import PeriodicTask, CrontabSchedule
from .models import CustomUser
import os
import json

# Function to fill in users table with test data on dev/staging


@receiver(post_migrate)
def create_users(sender, **kwargs):
    if sender.name == "accounts":
        with open(os.path.join(ROOT_DIR, 'seed_data.json'), "r") as f:
            seed_data = json.loads(f.read())
            for user in seed_data['users']:
                USER = CustomUser.objects.filter(
                    email=user['email']).first()
                if not USER:
                    if user['password'] == 'USE_REGULAR':
                        password = get_secret('SEED_DATA_PASSWORD')
                    elif user['password'] == 'USE_ADMIN':
                        password = get_secret('SEED_DATA_ADMIN_PASSWORD')
                    else:
                        password = user['password']
                    if (user['is_superuser'] == True):
                        # Admin users are created regardless of SEED_DATA value
                        USER = CustomUser.objects.create_superuser(
                            username=user['username'],
                            email=user['email'],
                            password=password,
                        )
                        print('Created Superuser:', user['email'])
                    else:
                        # Only create non-admin users if SEED_DATA=True
                        if SEED_DATA:
                            USER = CustomUser.objects.create_user(
                                username=user['email'],
                                email=user['email'],
                                password=password,
                            )
                            print('Created User:', user['email'])

                    USER.first_name = user['first_name']
                    USER.last_name = user['last_name']
                    USER.is_active = True
                    USER.save()


@receiver(post_migrate)
def create_celery_beat_schedules(sender, **kwargs):
    if sender.name == "django_celery_beat":
        with open(os.path.join(ROOT_DIR, 'seed_data.json'), "r") as f:
            seed_data = json.loads(f.read())
            # Creating Schedules
            for schedule in seed_data['schedules']:
                if schedule['type'] == 'crontab':
                    # Check if Schedule already exists
                    SCHEDULE = CrontabSchedule.objects.filter(minute=schedule['minute'],
                                                              hour=schedule['hour'],
                                                              day_of_week=schedule['day_of_week'],
                                                              day_of_month=schedule['day_of_month'],
                                                              month_of_year=schedule['month_of_year'],
                                                              timezone=schedule['timezone']
                                                              ).first()
                    # If it does not exist, create a new Schedule
                    if not SCHEDULE:
                        SCHEDULE = CrontabSchedule.objects.create(
                            minute=schedule['minute'],
                            hour=schedule['hour'],
                            day_of_week=schedule['day_of_week'],
                            day_of_month=schedule['day_of_month'],
                            month_of_year=schedule['month_of_year'],
                            timezone=schedule['timezone']
                        )
                        print(
                            f'Created Crontab Schedule for Hour:{SCHEDULE.hour},Minute:{SCHEDULE.minute}')
                    else:
                        print(
                            f'Crontab Schedule for Hour:{SCHEDULE.hour},Minute:{SCHEDULE.minute} already exists')
            for task in seed_data['scheduled_tasks']:
                TASK = PeriodicTask.objects.filter(name=task['name']).first()
                if not TASK:
                    if task['schedule']['type'] == 'crontab':
                        SCHEDULE = CrontabSchedule.objects.filter(minute=task['schedule']['minute'],
                                                                  hour=task['schedule']['hour'],
                                                                  day_of_week=task['schedule']['day_of_week'],
                                                                  day_of_month=task['schedule']['day_of_month'],
                                                                  month_of_year=task['schedule']['month_of_year'],
                                                                  timezone=task['schedule']['timezone']
                                                                  ).first()
                        TASK = PeriodicTask.objects.create(
                            crontab=SCHEDULE,
                            name=task['name'],
                            task=task['task'],
                            enabled=task['enabled']
                        )
                        print(f'Created Periodic Task: {TASK.name}')
                    else:
                        raise Exception('Schedule for Periodic Task not found')
                else:
                    print(f'Periodic Task: {TASK.name} already exists')