from django.db import models
from django.utils import timezone


class Employee(models.Model):
	first_name = models.CharField(max_length=64)
	last_name = models.CharField(max_length=64)
	hire_date = models.DateField()
	title = models.CharField(max_length=64, blank=True, null=True)
	department = models.CharField(max_length=64, blank=True, null=True)
	manager = models.CharField(max_length=64, blank=True, null=True)
	initial_comments = models.TextField(blank=True, null=True)
	archived = models.BooleanField(default=False)

	@property
	def full_name(self):
		return f"{self.first_name} {self.last_name}"


	def __str__(self):
		return self.full_name


class LogEntry(models.Model):
	employee = models.ForeignKey(Employee, on_delete=models.CASCADE)
	notes = models.CharField(max_length=500)


	created_at = models.DateTimeField(auto_now_add=True)
	updated_at = models.DateTimeField(auto_now=True)

	def __str__(self):
		return f"{self.employee}: {self.notes}"


class Todo(models.Model):
	employee = models.ForeignKey(Employee, on_delete=models.CASCADE)
	description = models.CharField(max_length=64)

	completed = models.BooleanField(default=False)
	completed_at = models.DateTimeField(blank=True, null=True)

	def complete(self):
		LogEntry.objects.create(
			employee=self.checklist.employee,
			notes=f'Completed To-do: "{self.description}"'
		)	
		self.object.completed = True
		self.object.completed_at = timezone.now()
		self.object.save()

	def __str__(self):
		return f"{self.employee}: {self.description}"