from django.utils import timezone
from django.db.models.signals import post_save
from django.dispatch import receiver
from .models import (
    Employee,
    LogEntry,
    Todo,
)

@receiver(post_save, sender=Employee, dispatch_uid="employee_created_signal")
def create_employee(sender, instance, created, **kwargs):
    if created:
        Todo.objects.bulk_create([
            Todo(employee=instance, description="Active Directory"),
            Todo(employee=instance, description="Office 365 Account"),
            Todo(employee=instance, description="Office 365 Licence"),
            Todo(employee=instance, description="Zendesk Account"),
            Todo(employee=instance, description="inContact Account"),
            Todo(employee=instance, description="IT Glue Entry"),
        ])
        LogEntry.objects.create(
            employee=instance,
            notes=f"Created {instance.full_name}"
        )

@receiver(post_save, sender=Todo, dispatch_uid="todo_completed_signal")
def complete_todo(sender, instance, created, **kwargs):
    if instance.completed and not instance.completed_at:
        LogEntry.objects.create(
            employee=instance.employee,
            notes=f'Completed To-do: "{instance.description}"'
        )   
        instance.completed_at = timezone.now()
        instance.save()
    elif instance.completed_at and not instance.completed:
        LogEntry.objects.create(
            employee=instance.employee,
            notes=f'Re-opened To-do: "{instance.description}"'
        )   
        instance.completed_at = None
        instance.save()