"""
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"