from django.contrib import admin
from django.db import models
from .models import Customer


class IsVipFilter(admin.SimpleListFilter):
    title = 'VIP статус'
    parameter_name = 'is_vip'

    def lookups(self, request, model_admin):
        return (
            ('yes', 'VIP'),
            ('no', 'Не VIP'),
        )

    def queryset(self, request, queryset):
        if self.value() == 'yes':
            return queryset.filter(loyalty_tier__in=['gold', 'platinum'])
        if self.value() == 'no':
            return queryset.exclude(loyalty_tier__in=['gold', 'platinum'])
        return queryset


@admin.register(Customer)
class CustomerAdmin(admin.ModelAdmin):
    """Административный интерфейс для управления клиентами цветочного магазина"""
    list_display = (
        'full_name',
        'email',
        'phone',
        'loyalty_tier',
        'total_spent',
        'is_vip',
        'created_at'
    )
    list_filter = (
        'loyalty_tier',
        IsVipFilter,
        'created_at'
    )
    search_fields = (
        'name',
        'email',
        'phone'
    )
    date_hierarchy = 'created_at'
    ordering = ('-created_at',)
    readonly_fields = ('created_at', 'updated_at', 'total_spent', 'is_vip')

    
    fieldsets = (
        ('Основная информация', {
            'fields': ('name', 'email', 'phone')
        }),
        ('Программа лояльности', {
            'fields': ('loyalty_tier', 'total_spent', 'is_vip'),
            'classes': ('collapse',)
        }),
        ('Даты', {
            'fields': ('created_at', 'updated_at'),
            'classes': ('collapse',)
        }),
    )