"""
CODH Notifications Models
Notification system
"""

import uuid
from django.db import models
from django.conf import settings


class Notification(models.Model):
    """
    User notifications
    """
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    
    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name='notifications')
    
    NOTIFICATION_TYPES = [
        ('system', 'System'),
        ('project', 'Project'),
        ('hosting', 'Hosting'),
        ('subscription', 'Subscription'),
        ('payment', 'Payment'),
        ('deployment', 'Deployment'),
        ('security', 'Security'),
        ('marketing', 'Marketing'),
    ]
    notification_type = models.CharField(max_length=20, choices=NOTIFICATION_TYPES)
    
    title = models.CharField(max_length=255)
    message = models.TextField()
    
    # Related object
    object_type = models.CharField(max_length=50, blank=True)
    object_id = models.CharField(max_length=100, blank=True)
    
    # Status
    is_read = models.BooleanField(default=False)
    read_at = models.DateTimeField(null=True, blank=True)
    
    # Channels
    sent_email = models.BooleanField(default=False)
    sent_push = models.BooleanField(default=False)
    sent_sms = models.BooleanField(default=False)
    
    # Action
    action_url = models.URLField(blank=True)
    action_text = models.CharField(max_length=100, blank=True)
    
    created_at = models.DateTimeField(auto_now_add=True)
    
    class Meta:
        verbose_name = 'Notification'
        verbose_name_plural = 'Notifications'
        ordering = ['-created_at']
    
    def __str__(self):
        return f"{self.title} ({self.user.email})"


class NotificationTemplate(models.Model):
    """
    Notification templates
    """
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    
    name = models.CharField(max_length=255)
    slug = models.SlugField(unique=True)
    
    notification_type = models.CharField(max_length=20, choices=Notification.NOTIFICATION_TYPES)
    
    # Templates
    subject_template = models.CharField(max_length=255)
    email_template = models.TextField()
    push_template = models.TextField(blank=True)
    sms_template = models.TextField(blank=True)
    
    # Variables
    variables = models.JSONField(default=list, blank=True)
    
    is_active = models.BooleanField(default=True)
    
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    
    class Meta:
        verbose_name = 'Notification Template'
        verbose_name_plural = 'Notification Templates'
    
    def __str__(self):
        return self.name


class EmailLog(models.Model):
    """
    Email sending logs
    """
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    
    recipient = models.EmailField()
    subject = models.CharField(max_length=255)
    
    STATUS_CHOICES = [
        ('pending', 'Pending'),
        ('sent', 'Sent'),
        ('delivered', 'Delivered'),
        ('failed', 'Failed'),
        ('bounced', 'Bounced'),
    ]
    status = models.CharField(max_length=15, choices=STATUS_CHOICES, default='pending')
    
    error_message = models.TextField(blank=True)
    
    sent_at = models.DateTimeField(null=True, blank=True)
    created_at = models.DateTimeField(auto_now_add=True)
    
    class Meta:
        verbose_name = 'Email Log'
        verbose_name_plural = 'Email Logs'
        ordering = ['-created_at']