import request from '@/utils/request'
import type { ApiResult, PageResult } from '@/api'

// 售后类型
export type AfterSaleType = 'refund' | 'return' | 'exchange' | 'repair'

// 售后状态
export type AfterSaleStatus =
  | 'pending'      // 待审核
  | 'approved'     // 已同意
  | 'rejected'     // 已拒绝
  | 'processing'   // 处理中
  | 'completed'    // 已完成
  | 'cancelled'    // 已取消

// 售后进度记录
export interface ProgressRecord {
  id: string
  time: string
  status: string
  description: string
  operator?: string
  remark?: string
}

// 售后详情
export interface AfterSaleDetail {
  id: string
  orderId: string
  orderNo: string
  goodsName?: string
  type: AfterSaleType
  status: AfterSaleStatus
  reason: string
  description: string
  amount: number
  applyTime: string
  processTime?: string
  completeTime?: string
  rejectReason?: string
  contactPhone?: string
  evidenceImages: string[]
  progressRecords: ProgressRecord[]
}

// 售后申请参数
export interface AfterSaleApplyParams {
  orderId: string
  type: AfterSaleType
  reason: string
  description?: string
  amount?: number
  contactPhone?: string
  evidenceImages?: string[]
  goodsItems?: Array<{ goodsId: string; quantity: number }>
}

// 售后列表查询参数
export interface AfterSaleListParams {
  page?: number
  pageSize?: number
  status?: AfterSaleStatus
  type?: AfterSaleType
}

// 售后类型映射
export const AFTER_SALE_TYPE_MAP: Record<AfterSaleType, string> = {
  refund: '退款',
  return: '退货',
  exchange: '换货',
  repair: '维修',
}

// 售后状态映射
export const AFTER_SALE_STATUS_MAP: Record<AfterSaleStatus, string> = {
  pending: '待审核',
  approved: '已同意',
  rejected: '已拒绝',
  processing: '处理中',
  completed: '已完成',
  cancelled: '已取消',
}

// 格式化售后状态
export const formatAfterSaleStatus = (status: AfterSaleStatus): {
  text: string
  color: string
  icon: string
} => {
  const statusMap: Record<AfterSaleStatus, { text: string; color: string; icon: string }> = {
    pending:    { text: '待审核', color: 'text-orange-500', icon: '⏳' },
    approved:   { text: '已同意', color: 'text-green-500',  icon: '✅' },
    rejected:   { text: '已拒绝', color: 'text-red-500',    icon: '❌' },
    processing: { text: '处理中', color: 'text-blue-500',   icon: '🔄' },
    completed:  { text: '已完成', color: 'text-green-500',  icon: '✅' },
    cancelled:  { text: '已取消', color: 'text-gray-400',   icon: '⭕' },
  }
  return statusMap[status] || { text: status, color: 'text-gray-400', icon: '📋' }
}

/**
 * 申请售后
 */
export async function applyAfterSale(data: AfterSaleApplyParams) {
  const res = await request.post<ApiResult<AfterSaleDetail>>(
    '/shop/shop-after-sale/apply',
    data
  )
  if (res.code === 0) {
    return res.data
  }
  return Promise.reject(new Error(res.message))
}

/**
 * 分页查询售后列表
 */
export async function pageAfterSaleList(params: AfterSaleListParams) {
  const res = await request.get<ApiResult<PageResult<AfterSaleDetail>>>(
    '/shop/shop-after-sale/page',
    params
  )
  if (res.code === 0) {
    return res.data
  }
  return Promise.reject(new Error(res.message))
}

/**
 * 查询售后详情
 */
export async function getAfterSaleDetail(id: string) {
  const res = await request.get<ApiResult<AfterSaleDetail>>(
    '/shop/shop-after-sale/' + id
  )
  if (res.code === 0 && res.data) {
    return res.data
  }
  return Promise.reject(new Error(res.message))
}

/**
 * 撤销售后申请
 */
export async function cancelAfterSale(id: string) {
  const res = await request.post<ApiResult<unknown>>(
    '/shop/shop-after-sale/cancel',
    { id }
  )
  if (res.code === 0) {
    return res.message
  }
  return Promise.reject(new Error(res.message))
}