144 lines
4.3 KiB
Python
144 lines
4.3 KiB
Python
"""
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Core models - Base models for inheritance across the application
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"""
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import uuid
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from django.contrib.contenttypes.fields import GenericForeignKey
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from django.contrib.contenttypes.models import ContentType
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from django.db import models
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class TimeStampedModel(models.Model):
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"""
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Abstract base model that provides self-updating
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'created_at' and 'updated_at' fields.
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"""
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created_at = models.DateTimeField(auto_now_add=True, db_index=True)
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updated_at = models.DateTimeField(auto_now=True)
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class Meta:
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abstract = True
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ordering = ['-created_at']
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class UUIDModel(models.Model):
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"""
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Abstract base model that uses UUID as primary key.
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All business models should inherit from this.
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"""
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id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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class Meta:
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abstract = True
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class SoftDeleteModel(models.Model):
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"""
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Abstract base model that provides soft delete functionality.
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"""
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is_deleted = models.BooleanField(default=False, db_index=True)
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deleted_at = models.DateTimeField(null=True, blank=True)
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class Meta:
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abstract = True
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def soft_delete(self):
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"""Soft delete the object"""
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from django.utils import timezone
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self.is_deleted = True
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self.deleted_at = timezone.now()
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self.save()
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def restore(self):
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"""Restore a soft-deleted object"""
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self.is_deleted = False
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self.deleted_at = None
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self.save()
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class AuditEvent(UUIDModel, TimeStampedModel):
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"""
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Generic audit log for tracking important events across the system.
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Uses generic foreign key to link to any model.
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"""
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EVENT_TYPES = [
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('user_login', 'User Login'),
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('user_logout', 'User Logout'),
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('role_change', 'Role Change'),
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('status_change', 'Status Change'),
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('assignment', 'Assignment'),
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('escalation', 'Escalation'),
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('sla_breach', 'SLA Breach'),
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('survey_sent', 'Survey Sent'),
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('survey_completed', 'Survey Completed'),
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('action_created', 'Action Created'),
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('action_closed', 'Action Closed'),
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('complaint_created', 'Complaint Created'),
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('complaint_closed', 'Complaint Closed'),
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('journey_started', 'Journey Started'),
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('journey_completed', 'Journey Completed'),
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('stage_completed', 'Stage Completed'),
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('integration_event', 'Integration Event'),
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('notification_sent', 'Notification Sent'),
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('other', 'Other'),
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]
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event_type = models.CharField(max_length=50, choices=EVENT_TYPES, db_index=True)
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user = models.ForeignKey(
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'accounts.User',
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on_delete=models.SET_NULL,
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null=True,
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blank=True,
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related_name='audit_events'
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)
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description = models.TextField()
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# Generic foreign key to link to any model
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content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE, null=True, blank=True)
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object_id = models.UUIDField(null=True, blank=True)
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content_object = GenericForeignKey('content_type', 'object_id')
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# Additional metadata
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metadata = models.JSONField(default=dict, blank=True)
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ip_address = models.GenericIPAddressField(null=True, blank=True)
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user_agent = models.TextField(blank=True)
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class Meta:
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ordering = ['-created_at']
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indexes = [
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models.Index(fields=['event_type', '-created_at']),
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models.Index(fields=['user', '-created_at']),
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models.Index(fields=['content_type', 'object_id']),
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]
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def __str__(self):
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return f"{self.event_type} - {self.created_at.strftime('%Y-%m-%d %H:%M')}"
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class BaseChoices(models.TextChoices):
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"""Base class for choice enums"""
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pass
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# Common status choices used across multiple apps
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class StatusChoices(BaseChoices):
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ACTIVE = 'active', 'Active'
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INACTIVE = 'inactive', 'Inactive'
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PENDING = 'pending', 'Pending'
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COMPLETED = 'completed', 'Completed'
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CANCELLED = 'cancelled', 'Cancelled'
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class PriorityChoices(BaseChoices):
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LOW = 'low', 'Low'
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MEDIUM = 'medium', 'Medium'
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HIGH = 'high', 'High'
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CRITICAL = 'critical', 'Critical'
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class SeverityChoices(BaseChoices):
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LOW = 'low', 'Low'
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MEDIUM = 'medium', 'Medium'
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HIGH = 'high', 'High'
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CRITICAL = 'critical', 'Critical'
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