import uuid
import pghistory
from django.db import models


@pghistory.track()
class Report(models.Model):
    """User-submitted reports for content moderation"""
    STATUS_CHOICES = [
        ('pending', 'Pending Review'),
        ('reviewing', 'Under Review'),
        ('resolved', 'Resolved'),
        ('dismissed', 'Dismissed'),
    ]
    
    REPORT_TYPE_CHOICES = [
        ('inappropriate', 'Inappropriate Content'),
        ('inaccurate', 'Inaccurate Information'),
        ('spam', 'Spam'),
        ('duplicate', 'Duplicate'),
        ('copyright', 'Copyright Violation'),
        ('other', 'Other'),
    ]
    
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    
    # What is being reported
    entity_type = models.CharField(max_length=50, db_index=True)
    entity_id = models.UUIDField(db_index=True)
    
    # Report details
    report_type = models.CharField(max_length=50, choices=REPORT_TYPE_CHOICES)
    description = models.TextField()
    status = models.CharField(max_length=20, choices=STATUS_CHOICES, default='pending', db_index=True)
    
    # Reporter
    reported_by = models.ForeignKey('users.User', on_delete=models.CASCADE, related_name='reports_created')
    
    # Moderation
    reviewed_by = models.ForeignKey('users.User', null=True, blank=True, on_delete=models.SET_NULL, related_name='reports_reviewed')
    reviewed_at = models.DateTimeField(null=True, blank=True)
    resolution_notes = models.TextField(null=True, blank=True)
    
    # Timestamps
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    
    class Meta:
        verbose_name = 'Report'
        verbose_name_plural = 'Reports'
        ordering = ['-created_at']
        indexes = [
            models.Index(fields=['entity_type', 'entity_id']),
            models.Index(fields=['status', '-created_at']),
            models.Index(fields=['reported_by', '-created_at']),
        ]
    
    def __str__(self):
        return f"{self.get_report_type_display()} - {self.entity_type} ({self.status})"