Refactor code structure and remove redundant changes

django-backend/apps/contact/admin.py

@@ -0,0 +1,115 @@
+"""
+Django admin interface for Contact submissions.
+"""
+from django.contrib import admin
+from django.utils.html import format_html
+from django.utils import timezone
+from .models import ContactSubmission
+
+
+@admin.register(ContactSubmission)
+class ContactSubmissionAdmin(admin.ModelAdmin):
+    """Admin interface for managing contact submissions."""
+    
+    list_display = [
+        'ticket_number',
+        'name',
+        'email',
+        'category',
+        'status_badge',
+        'assigned_to',
+        'created_at',
+    ]
+    
+    list_filter = [
+        'status',
+        'category',
+        'created_at',
+        'assigned_to',
+    ]
+    
+    search_fields = [
+        'ticket_number',
+        'name',
+        'email',
+        'subject',
+        'message',
+    ]
+    
+    readonly_fields = [
+        'id',
+        'ticket_number',
+        'user',
+        'created_at',
+        'updated_at',
+        'resolved_at',
+    ]
+    
+    fieldsets = (
+        ('Contact Information', {
+            'fields': ('ticket_number', 'name', 'email', 'user', 'category')
+        }),
+        ('Message', {
+            'fields': ('subject', 'message')
+        }),
+        ('Status & Assignment', {
+            'fields': ('status', 'assigned_to', 'admin_notes')
+        }),
+        ('Resolution', {
+            'fields': ('resolved_at', 'resolved_by'),
+            'classes': ('collapse',)
+        }),
+        ('Metadata', {
+            'fields': ('id', 'created_at', 'updated_at'),
+            'classes': ('collapse',)
+        }),
+    )
+    
+    def status_badge(self, obj):
+        """Display status with colored badge."""
+        colors = {
+            'pending': '#ff9800',
+            'in_progress': '#2196f3',
+            'resolved': '#4caf50',
+            'archived': '#9e9e9e',
+        }
+        color = colors.get(obj.status, '#9e9e9e')
+        return format_html(
+            '<span style="background-color: {}; color: white; padding: 3px 10px; '
+            'border-radius: 3px; font-weight: bold;">{}</span>',
+            color,
+            obj.get_status_display()
+        )
+    status_badge.short_description = 'Status'
+    
+    def save_model(self, request, obj, form, change):
+        """Auto-set resolved_by when status changes to resolved."""
+        if change and 'status' in form.changed_data:
+            if obj.status == 'resolved' and not obj.resolved_by:
+                obj.resolved_by = request.user
+                obj.resolved_at = timezone.now()
+        super().save_model(request, obj, form, change)
+    
+    actions = ['mark_as_in_progress', 'mark_as_resolved', 'assign_to_me']
+    
+    def mark_as_in_progress(self, request, queryset):
+        """Mark selected submissions as in progress."""
+        updated = queryset.update(status='in_progress')
+        self.message_user(request, f'{updated} submission(s) marked as in progress.')
+    mark_as_in_progress.short_description = "Mark as In Progress"
+    
+    def mark_as_resolved(self, request, queryset):
+        """Mark selected submissions as resolved."""
+        updated = queryset.filter(status__in=['pending', 'in_progress']).update(
+            status='resolved',
+            resolved_at=timezone.now(),
+            resolved_by=request.user
+        )
+        self.message_user(request, f'{updated} submission(s) marked as resolved.')
+    mark_as_resolved.short_description = "Mark as Resolved"
+    
+    def assign_to_me(self, request, queryset):
+        """Assign selected submissions to current user."""
+        updated = queryset.update(assigned_to=request.user)
+        self.message_user(request, f'{updated} submission(s) assigned to you.')
+    assign_to_me.short_description = "Assign to Me"