import { defineStore } from 'pinia'
import { ref, computed } from 'vue'
import {
  findCrmCustomerPage,
  saveCrmCustomer,
  updateCrmCustomer,
  getCrmCustomerById,
  findAddressListByCustomerId,
  saveCrmCustomerAddress,
  deleteCrmCustomerAddress,
} from '@/api/mdmCustomer/index'
import type { Customer, CustomerForm, CustomerAddress, UserRole, SearchForm } from '@/types/mdmCustomer/customer'

export const useCustomerStore = defineStore('mdmCustomer', () => {
  // ==================== 列表 ====================
  const tableData = ref<Customer[]>([])
  const total = ref(0)
  const loading = ref(false)
  const searchForm = ref<SearchForm>({})
  const pagination = ref({ pageIndex: 1, pageRows: 10 })

  // ==================== 角色 ====================
  const currentRole = ref<UserRole>('admin')

  // ==================== 详情 ====================
  const detailVisible = ref(false)
  const detailData = ref<Customer | null>(null)
  const detailLoading = ref(false)

  // ==================== 表单弹窗 ====================
  const formVisible = ref(false)
  const formMode = ref<'add' | 'edit'>('add')
  const formData = ref<CustomerForm>(emptyForm())
  const formVersionNum = ref<number | null>(null)
  const submitting = ref(false)

  // ==================== 地址管理 ====================
  const addressList = ref<CustomerAddress[]>([])
  const addressFormVisible = ref(false)
  const addressFormData = ref<{ addressId?: number | null; customerId?: number | null; addressDetail: string; isDefault: number }>(emptyAddressForm())
  const editingAddressIndex = ref(-1)

  // ==================== 确认弹窗 ====================
  const confirmVisible = ref(false)
  const confirmTitle = ref('')
  const confirmMessage = ref('')
  const confirmCallback = ref<(() => void) | null>(null)

  // ==================== Getters ====================

  const statusFilterOptions = computed(() => {
    if (currentRole.value === 'admin') {
      return CUSTOMER_STATUS_OPTIONS
    }
    // 销售员/经理默认仅查看正常状态
    return [{ label: '正常', value: '正常' }]
  })

  // ==================== Actions ====================

  function emptyForm(): CustomerForm {
    return {
      customerId: null,
      customerCode: '',
      customerName: '',
      shortName: '',
      tradeType: '',
      creditCode: '',
      parentId: null,
      responsibleUserId: null,
      customerStatus: '正常',
    }
  }

  function emptyAddressForm() {
    return {
      addressId: null,
      customerId: null,
      addressDetail: '',
      isDefault: 0,
    }
  }

  /** 查询客户列表 */
  async function fetchList(params?: Partial<SearchForm>) {
    loading.value = true
    try {
      const res = await findCrmCustomerPage({
        pageIndex: pagination.value.pageIndex,
        pageRows: pagination.value.pageRows,
        params: {
          ...searchForm.value,
          ...params,
          // 角色默认筛选
          customerStatus: currentRole.value === 'admin'
            ? (searchForm.value.customerStatus || '')
            : '正常',
        },
      })
      if (res.code === 800) {
        const d = res.data || {}
        tableData.value = d.rows || d.data || []
        total.value = Number(d.total || d.count) || 0
      }
    } catch (err) {
      console.error('查询客户列表失败:', err)
      tableData.value = []
      total.value = 0
    } finally {
      loading.value = false
    }
  }

  /** 查询客户详情 */
  async function fetchDetail(customerId: number) {
    detailLoading.value = true
    try {
      const res = await getCrmCustomerById(customerId)
      if (res.code === 800) {
        detailData.value = res.data
        addressList.value = res.data?.addressList || []
      }
    } catch (err) {
      console.error('查询详情失败:', err)
    } finally {
      detailLoading.value = false
    }
  }

  /** 打开新增表单 */
  function openAddForm() {
    formMode.value = 'add'
    formData.value = emptyForm()
    formVersionNum.value = null
    formVisible.value = true
  }

  /** 打开编辑表单 */
  function openEditForm(row: Customer) {
    formMode.value = 'edit'
    formData.value = {
      customerId: row.customerId || null,
      customerCode: row.customerCode || '',
      customerName: row.customerName || '',
      shortName: row.shortName || '',
      tradeType: row.tradeType || '',
      creditCode: row.creditCode || '',
      parentId: row.parentId || null,
      responsibleUserId: row.responsibleUserId || null,
      customerStatus: row.customerStatus || '正常',
    }
    formVersionNum.value = row.versionNum || null
    formVisible.value = true
    // 预加载地址
    if (row.customerId) fetchAddressList(row.customerId)
  }

  /** 保存客户（新增/编辑） */
  async function saveOrUpdateCustomer() {
    submitting.value = true
    try {
      const payload: Record<string, unknown> = { ...formData.value }
      if (formMode.value === 'add') {
        delete payload.customerCode
        delete payload.customerId
      } else {
        payload.versionNum = formVersionNum.value
        if (addressList.value.length > 0) {
          payload.addressList = addressList.value
        }
      }
      const api = formMode.value === 'edit' ? updateCrmCustomer : saveCrmCustomer
      const res = await api({ params: payload })
      if (res.code === 800) {
        formVisible.value = false
        await fetchList()
        return true
      }
      return false
    } finally {
      submitting.value = false
    }
  }

  /** 加载地址列表 */
  async function fetchAddressList(customerId: number) {
    try {
      const res = await findAddressListByCustomerId(customerId)
      if (res.code === 800) {
        addressList.value = res.data || []
      }
    } catch {
      addressList.value = []
    }
  }

  /** 打开地址新增弹窗 */
  function openAddressForm(customerId: number) {
    editingAddressIndex.value = -1
    addressFormData.value = { ...emptyAddressForm(), customerId }
    addressFormVisible.value = true
  }

  /** 编辑地址（打开弹窗回填） */
  function editAddressItem(addr: CustomerAddress, index: number) {
    editingAddressIndex.value = index
    addressFormData.value = {
      addressId: addr.addressId || null,
      customerId: addr.customerId,
      addressDetail: addr.addressDetail || '',
      isDefault: addr.isDefault || 0,
    }
    addressFormVisible.value = true
  }

  /** 保存地址 */
  async function saveAddress() {
    try {
      const res = await saveCrmCustomerAddress({ params: addressFormData.value })
      if (res.code === 800) {
        addressFormVisible.value = false
        if (formData.value.customerId) await fetchAddressList(formData.value.customerId)
        return true
      }
      return false
    } catch {
      return false
    }
  }

  /** 删除地址 */
  async function deleteAddress(addressId: number, customerId: number) {
    try {
      const res = await deleteCrmCustomerAddress(addressId)
      if (res.code === 800) {
        await fetchAddressList(customerId)
        return true
      }
      return false
    } catch {
      return false
    }
  }

  /** 切换角色 */
  function setRole(role: UserRole) {
    currentRole.value = role
    searchForm.value = {}
    pagination.value.pageIndex = 1
    fetchList()
  }

  /** 重置搜索 */
  function resetSearch() {
    searchForm.value = {}
    pagination.value.pageIndex = 1
    fetchList()
  }

  /** 打开确认弹窗 */
  function openConfirm(title: string, message: string, cb: () => void) {
    confirmTitle.value = title
    confirmMessage.value = message
    confirmCallback.value = cb
    confirmVisible.value = true
  }

  /** 执行确认回调 */
  function doConfirm() {
    confirmCallback.value?.()
    confirmVisible.value = false
  }

  return {
    // state
    tableData, total, loading, searchForm, pagination,
    currentRole, detailVisible, detailData, detailLoading,
    formVisible, formMode, formData, formVersionNum, submitting,
    addressList, addressFormVisible, addressFormData, editingAddressIndex,
    confirmVisible, confirmTitle, confirmMessage, confirmCallback,
    // getters
    statusFilterOptions,
    // actions
    fetchList, fetchDetail,
    openAddForm, openEditForm, saveOrUpdateCustomer,
    fetchAddressList, openAddressForm, editAddressItem, saveAddress, deleteAddress,
    setRole, resetSearch,
    openConfirm, doConfirm,
    emptyForm,
  }
})

/** 客户状态选项（全局） */
export const CUSTOMER_STATUS_OPTIONS = [
  { label: '正常', value: '正常' },
  { label: '停用', value: '停用' },
]

/** 贸易类型选项（全局） */
export const TRADE_TYPE_OPTIONS = [
  { label: '内销', value: 'DOMESTIC' },
  { label: '外销', value: 'EXPORT' },
]