from django.contrib import admin
from unfold.admin import ModelAdmin, TabularInline
from unfold.decorators import display
from apps.events.models import Event, EventRegistration, RegistrationStatus, EventCategory, LocationType


class EventRegistrationInline(TabularInline):
    model = EventRegistration
    extra = 0
    fields = ('user', 'status', 'notes', 'registered_at')
    readonly_fields = ('registered_at',)


@admin.register(Event)
class EventAdmin(ModelAdmin):
    list_display = (
        'title',
        'organizer',
        'display_category',
        'event_date',
        'start_time',
        'display_location_type',
        'registration_status_badge',
        'is_active',
        'is_featured',
    )
    list_display_links = ('title', 'organizer', 'display_category')
    list_filter = ('category', 'location_type', 'is_active', 'is_featured', 'language', 'event_date')
    search_fields = ('title', 'description', 'speaker_name', 'organizer__name', 'venue_address')
    prepopulated_fields = {'slug': ('title',)}
    inlines = [EventRegistrationInline]
    actions = ['mark_as_featured', 'activate_events', 'deactivate_events']

    @display(description="Category", label=True)
    def display_category(self, obj):
        color_map = {
            EventCategory.RELIGIOUS: "purple",
            EventCategory.EDUCATIONAL: "blue",
            EventCategory.CULTURAL: "green",
            EventCategory.COUNSELING: "amber",
            EventCategory.CONFERENCE: "indigo",
            EventCategory.WORKSHOP: "teal",
        }
        return obj.get_category_display(), color_map.get(obj.category, "gray")

    @display(description="Type", label=True)
    def display_location_type(self, obj):
        color_map = {
            LocationType.IN_PERSON: "blue",
            LocationType.ONLINE: "green",
            LocationType.HYBRID: "purple",
        }
        return obj.get_location_type_display(), color_map.get(obj.location_type, "gray")

    @display(description="Registrations")
    def registration_status_badge(self, obj):
        return f"{obj.registration_count} / {obj.capacity}"

    @admin.action(description="Mark selected events as Featured")
    def mark_as_featured(self, request, queryset):
        queryset.update(is_featured=True)

    @admin.action(description="Activate selected events")
    def activate_events(self, request, queryset):
        queryset.update(is_active=True)

    @admin.action(description="Deactivate selected events")
    def deactivate_events(self, request, queryset):
        queryset.update(is_active=False)


@admin.register(EventRegistration)
class EventRegistrationAdmin(ModelAdmin):
    list_display = ('event', 'user', 'display_status', 'registered_at')
    list_display_links = ('event', 'user', 'display_status')
    list_filter = ('status', 'registered_at')
    search_fields = ('event__title', 'user__email', 'user__fullname', 'notes')

    @display(description="Status", label=True)
    def display_status(self, obj):
        color_map = {
            RegistrationStatus.REGISTERED: "green",
            RegistrationStatus.ATTENDED: "blue",
            RegistrationStatus.CANCELLED: "red",
        }
        return obj.get_status_display(), color_map.get(obj.status, "gray")