from django.db import models
from django_softdelete.models import SoftDeleteModel

from inventory.models import Event


class IssueThread(SoftDeleteModel):
    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=255)
    state = models.CharField(max_length=255, default='new')
    assigned_to = models.CharField(max_length=255, null=True)
    last_activity = models.DateTimeField(auto_now=True)
    manually_created = models.BooleanField(default=False)

    class Meta:
        permissions = [
            ('send_mail', 'Can send mail'),
            ('add_issuethread_manual', 'Can add issue thread manually'),
        ]


class Comment(models.Model):
    id = models.AutoField(primary_key=True)
    issue_thread = models.ForeignKey(IssueThread, on_delete=models.CASCADE, related_name='comments')
    comment = models.TextField()
    timestamp = models.DateTimeField(auto_now_add=True)


class StateChange(models.Model):
    id = models.AutoField(primary_key=True)
    issue_thread = models.ForeignKey(IssueThread, on_delete=models.CASCADE, related_name='state_changes')
    state = models.CharField(max_length=255)
    timestamp = models.DateTimeField(auto_now_add=True)