from django.contrib import admin
from basic_info.services import CustomerVisibilityService
from . import models


class AdminBase(admin.ModelAdmin):
    """管理员基础类，定义通用配置"""

    def get_readonly_fields(self, request, obj = ...):
        readonly_fields = list(super().get_readonly_fields(request, obj))
        if request.user.is_superuser:
            readonly_fields.append('merchant')
        return readonly_fields

    def get_list_display(self, request):
        result = super().get_list_display(request)
        result = list(result)

        if 'id' not in result:
            result = ['id'] + result
            
        if request.user.is_superuser and 'merchant' not in result:
            result = result + ['merchant']

        return result

    def save_model(self, request, obj, form, change):
        if not change:
            if not obj.merchant_id:
                obj.merchant_id = request.user.employee.merchant.id
        return super().save_model(request, obj, form, change)


@admin.register(models.QuickInput)
class QuickInputAdmin(admin.ModelAdmin):
    list_display = ('name', 'value', 'group')
    list_filter = ('group',)


@admin.register(models.Merchant)
class MerchantAdmin(admin.ModelAdmin):
    list_display = ('name', 'type', 'email', 'mobile', 'auto_complete_stock_change')
    search_fields = ('name', 'mobile')
    list_filter = ('type', 'auto_complete_stock_change')


@admin.register(models.Supplier)
class SupplierAdmin(AdminBase):
    list_display = ('name', 'area', 'email', 'mobile')
    search_fields = ('name', 'area', 'email', 'mobile')


@admin.register(models.ProductCategory)
class ProductCategoryAdmin(AdminBase):
    list_display = ('name', 'product_prefix', 'description')
    search_fields = ('name',)


@admin.register(models.Product)
class ProductAdmin(AdminBase):
    list_display = (
        'name',
        'category',
        'human_id',
        'color',
        'width_size',
        'transform_rate',
        'single_price_in',
        'single_price_out',
    )
    search_fields = ('name', 'human_id')
    list_filter = ('category',)


@admin.register(models.BankAccount)
class BankAccountAdmin(AdminBase):
    list_display = ('name', 'auto_number')
    search_fields = ('name', 'auto_number')


@admin.register(models.WareHouse)
class WareHouseAdmin(AdminBase):
    list_display = ('name', 'location', 'area', 'mobile', 'mode')
    list_filter = ('area', 'mode')
    search_fields = ('name', 'location', 'mobile')


@admin.register(models.Customer)
class CustomerAdmin(AdminBase):
    list_display = ('name', 'area', 'email', 'mobile', 'created_by', 'total_debt')
    search_fields = ('name', 'area', 'email', 'mobile')

    def get_queryset(self, request):
        qs = super().get_queryset(request)
        qs = CustomerVisibilityService.filter_customers_for_employee(qs, request.user)
        return qs

    @admin.display(boolean=False, description='累欠金额')
    def total_debt(self, obj):
        return '0 (动态逻辑字段待实现)'


@admin.register(models.Employee)
class EmployeeAdmin(AdminBase):
    list_display = ('name', 'mobile', 'status', 'job_type', 'sys_user')
    search_fields = ('name', 'mobile')
    list_filter = (
        'job_type',
        'status',
    )


@admin.register(models.DeviceInfo)
class DeviceInfoAdmin(AdminBase):
    list_display = ('name', 'type', 'is_occupied', 'status')
    search_fields = ('name', 'start_working_at', 'stop_working_at')
    list_filter = ('type', 'status')


@admin.register(models.VehicleType)
class VehicleTypeAdmin(AdminBase):
    list_display = ('name', 'description')
    search_fields = ('name',)


@admin.register(models.VehicleTransportRecord)
class VehicleTransportRecordAdmin(AdminBase):
    list_display = ('driver_name', 'contact_number', 'delivery_date')
    search_fields = ('driver_name', 'contact_number')
    list_filter = ('vehicle_type',)