import { resolveFileUrl } from '@/utils/image'
import { formatPrice } from '@/utils/format'
import { parseCartSpecText } from '@/utils/cartSpec'
import { listAftersales } from '@/api/orderAftersale'
import {
  ORDER_ACTION,
  ORDER_ACTION_LABEL,
  REVIEW_ITEM_STATUS,
  AFTERSALE_APPLY_TYPE_OPTIONS,
  AFTERSALE_TAB,
  ORDER_STATUS,
  ORDER_AFTERSALE_CARD_LABEL,
  ORDER_AFTERSALE_CARD_STATUS
} from '@/constants/order'

/** 订单级不再展示的评价按钮（改在商品行） */
const ORDER_LEVEL_REVIEW_CODES = [ORDER_ACTION.REVIEW, ORDER_ACTION.VIEW_REVIEW]

const GOODS_PLACEHOLDER = '/static/logo.png'
const SHOP_PLACEHOLDER = '/static/logo.png'

/** 后端凭证图可能是逗号拼接字符串，统一转成数组 */
function normalizePicList(raw) {
  if (!raw) return []
  if (Array.isArray(raw)) return raw.filter(Boolean)
  if (typeof raw === 'string') {
    return raw.split(',').map((s) => s.trim()).filter(Boolean)
  }
  return []
}

function mapAftersaleApplyTypeText(applyType) {
  const hit = AFTERSALE_APPLY_TYPE_OPTIONS.find((opt) => opt.value === applyType)
  return hit ? hit.label : applyType || ''
}

function mapAftersaleStatusText(status) {
  if (status === '2') return '售后完结'
  if (status === '1') return '商家处理中'
  return status || ''
}

function mapAftersaleProgressText(stage) {
  if (stage === 'FINISHED') return '商家处理 → 售后完结（当前：售后完结）'
  return '商家处理 → 售后完结（当前：商家处理）'
}

function mapFirstItem(item) {
  if (!item) return null
  const specText = (item.goodsSpec || item.specText || '').trim() || '默认'
  return {
    orderItemId: item.itemId || item.orderItemId,
    goodsId: item.goodsId,
    goodsName: item.goodsName || '',
    goodsImage: item.goodsImage || item.mainPic || '',
    mainPic: item.mainPic || '',
    displayPic: resolveFileUrl(item.goodsImage || item.mainPic) || GOODS_PLACEHOLDER,
    specText,
    specList: parseCartSpecText(specText),
    quantity: Number(item.quantity) || 1,
    unitPrice: item.unitPrice,
    priceText: formatPrice(item.unitPrice),
    reviewStatus: item.reviewStatus,
    reviewId: item.reviewId
  }
}

function mapOrderItemRow(row) {
  if (!row) return null
  const specText = (row.goodsSpec || row.specText || '').trim() || '默认'
  return {
    orderItemId: row.orderItemId || row.itemId,
    goodsId: row.goodsId,
    goodsName: row.goodsName || '',
    goodsImage: row.goodsImage || row.mainPic || '',
    mainPic: row.mainPic || '',
    displayPic: resolveFileUrl(row.goodsImage || row.mainPic) || GOODS_PLACEHOLDER,
    specText,
    specList: parseCartSpecText(specText),
    serviceDesc: row.serviceDesc || '',
    quantity: Number(row.quantity) || 1,
    unitPrice: row.unitPrice || row.salePrice,
    priceText: formatPrice(row.unitPrice || row.salePrice),
    lineAmount: row.lineAmount || row.subtotal,
    lineAmountText: formatPrice(row.lineAmount || row.subtotal),
    buyerRemark: row.buyerRemark || '',
    reviewStatus: row.reviewStatus,
    reviewId: row.reviewId
  }
}

/** 订单已有进行中/已完结售后时，不再展示「申请售后」 */
export function hasOrderAftersale(aftersaleStatus) {
  const status = aftersaleStatus != null ? String(aftersaleStatus) : ''
  return (
    status === ORDER_AFTERSALE_CARD_STATUS.IN_PROGRESS ||
    status === ORDER_AFTERSALE_CARD_STATUS.FINISHED
  )
}

function mapActions(actions, aftersaleStatus) {
  const hideAftersale = hasOrderAftersale(aftersaleStatus)
  return (actions || [])
    .filter((code) => !ORDER_LEVEL_REVIEW_CODES.includes(code))
    .filter((code) => !(hideAftersale && code === ORDER_ACTION.AFTERSALE))
    .map((code) => ({
      code,
      label: ORDER_ACTION_LABEL[code] || code
    }))
    .filter((item) => item.label)
}

/** 详情页补查订单售后态（列表接口有 aftersaleStatus，详情接口暂无） */
export async function resolveOrderAftersaleStatus(orderId) {
  if (!orderId) return null
  try {
    const inProgressRes = await listAftersales({
      tab: AFTERSALE_TAB.IN_PROGRESS,
      pageNum: 1,
      pageSize: 100
    })
    const inProgressRows = inProgressRes.rows || []
    if (inProgressRows.some((row) => String(row.orderId) === String(orderId))) {
      return ORDER_AFTERSALE_CARD_STATUS.IN_PROGRESS
    }
    const finishedRes = await listAftersales({
      tab: AFTERSALE_TAB.FINISHED,
      pageNum: 1,
      pageSize: 100
    })
    const finishedRows = finishedRes.rows || []
    if (finishedRows.some((row) => String(row.orderId) === String(orderId))) {
      return ORDER_AFTERSALE_CARD_STATUS.FINISHED
    }
  } catch (e) {
    // 查询失败时不阻断详情展示
  }
  return null
}

/** 交易成功商品行：待评价→评价，已评价→查看评价 */
export function getItemReviewAction(item) {
  if (!item || !item.reviewStatus) return null
  if (item.reviewStatus === REVIEW_ITEM_STATUS.PENDING) {
    return {
      code: ORDER_ACTION.REVIEW,
      label: ORDER_ACTION_LABEL[ORDER_ACTION.REVIEW]
    }
  }
  if (item.reviewStatus === REVIEW_ITEM_STATUS.DONE) {
    return {
      code: ORDER_ACTION.VIEW_REVIEW,
      label: ORDER_ACTION_LABEL[ORDER_ACTION.VIEW_REVIEW]
    }
  }
  return null
}

/** 评价列表「待评价」：订单行展平为待评价商品行 */
export function flattenPendingReviewItems(rows) {
  const result = []
  for (const row of rows || []) {
    const card = mapOrderListRow(row)
    if (!card) continue
    for (const item of card.items || []) {
      if (item.reviewStatus !== REVIEW_ITEM_STATUS.PENDING) continue
      result.push({
        key: `pending-${card.orderId}-${item.orderItemId}`,
        orderId: card.orderId,
        item
      })
    }
  }
  return result
}

/** 评价列表「已评价」行 → 紧凑卡片模型 */
export function mapReviewDoneRow(row) {
  if (!row) return null
  const item = mapFirstItem(row.firstItem)
  const content = (row.content || '').trim()
  return {
    key: `done-${row.reviewId || row.orderId}-${item?.orderItemId || 0}`,
    reviewId: row.reviewId,
    orderId: row.orderId,
    orderItemId: item?.orderItemId,
    score: Number(row.score) || 0,
    content,
    contentBrief: trimText(content, 48, '此用户未填写评价内容'),
    reviewTime: row.reviewTime || row.createTime || '',
    item
  }
}

function trimText(text, maxLen, emptyFallback = '') {
  const s = (text || '').trim()
  if (!s) return emptyFallback
  if (s.length <= maxLen) return s
  return `${s.slice(0, maxLen)}…`
}

/**
 * 列表卡片状态文案（MO-L4 调整）
 * 仅「售后处理中」覆盖主状态；售后已完结后订单应变已关闭，列表不再展示「售后已完成」
 */
export function mapOrderCardStatusText(orderStatusText, aftersaleStatus, orderStatus) {
  if (aftersaleStatus === ORDER_AFTERSALE_CARD_STATUS.IN_PROGRESS) {
    return ORDER_AFTERSALE_CARD_LABEL[aftersaleStatus]
  }
  if (aftersaleStatus === ORDER_AFTERSALE_CARD_STATUS.FINISHED) {
    if (orderStatus === ORDER_STATUS.CLOSED) {
      return orderStatusText || '已关闭'
    }
    // 售后已完结但订单主状态未同步（异常数据）时，仍按已关闭展示
    return '已关闭'
  }
  return orderStatusText || ''
}

/** 列表行 VO → 卡片模型 */
export function mapOrderListRow(row) {
  if (!row) return null
  const rawItems = Array.isArray(row.items) && row.items.length
    ? row.items
    : row.firstItem
      ? [row.firstItem]
      : []
  const items = rawItems.map(mapFirstItem).filter(Boolean)
  const firstItem = items[0] || mapFirstItem(row.firstItem)
  const orderStatusText = row.orderStatusText || ''
  const aftersaleStatus = row.aftersaleStatus || null
  return {
    orderId: row.orderId,
    orderNo: row.orderNo || '',
    orderStatus: row.orderStatus,
    orderStatusText,
    aftersaleStatus,
    statusText: mapOrderCardStatusText(orderStatusText, aftersaleStatus, row.orderStatus),
    statusIsAftersale: aftersaleStatus === ORDER_AFTERSALE_CARD_STATUS.IN_PROGRESS,
    amountLabel: row.orderStatus === ORDER_STATUS.PENDING_PAY ? '应付' : '实付',
    shopId: row.shopId,
    shopName: row.shopName || '',
    shopAvatar: resolveFileUrl(row.shopAvatar) || SHOP_PLACEHOLDER,
    payAmount: row.payAmount,
    payAmountText: formatPrice(row.payAmount),
    goodsAmount: row.goodsAmount,
    freightAmount: row.freightAmount,
    createTime: row.createTime || '',
    itemCount: Number(row.itemCount) || items.length,
    items,
    firstItem,
    payRemainSeconds: row.payRemainSeconds,
    reviewStatus: row.reviewStatus,
    actions: mapActions(row.actions, aftersaleStatus)
  }
}

/** 详情 VO → 页面模型；options.aftersaleStatus 用于补全售后态并过滤操作按钮 */
export function mapOrderDetail(data, options = {}) {
  if (!data) return null
  const items = (data.items || []).map(mapOrderItemRow).filter(Boolean)
  const latestTrace = data.latestTrace || null
  const aftersaleStatus = data.aftersaleStatus || options.aftersaleStatus || null
  return {
    orderId: data.orderId,
    orderNo: data.orderNo || '',
    orderStatus: data.orderStatus,
    statusText: data.orderStatusText || '',
    payStatus: data.payStatus,
    payType: data.payType,
    payTypeText: data.payTypeText || '',
    shopId: data.shopId,
    shopName: data.shopName || '',
    shopAvatar: resolveFileUrl(data.shopAvatar) || SHOP_PLACEHOLDER,
    consigneeName: data.consigneeName || '',
    consigneeMobile: data.consigneeMobile || '',
    consigneeAddress: data.consigneeAddress || '',
    goodsAmount: data.goodsAmount,
    goodsAmountText: formatPrice(data.goodsAmount),
    freightAmount: data.freightAmount,
    freightAmountText: formatPrice(data.freightAmount),
    freightDesc: data.freightDesc || '',
    payAmount: data.payAmount,
    payAmountText: formatPrice(data.payAmount),
    createTime: data.createTime || '',
    payTime: data.payTime || '',
    payExpireTime: data.payExpireTime || '',
    payRemainSeconds: data.payRemainSeconds,
    finishTime: data.finishTime || '',
    shipTime: data.shipTime || '',
    closeType: data.closeType,
    closeTypeText: data.closeTypeText || '',
    closeReason: data.closeReason || '',
    deliveryType: data.deliveryType,
    logisticsCompany: data.logisticsCompany || '',
    trackingNo: data.trackingNo || '',
    vehicleNo: data.vehicleNo || '',
    courierName: data.courierName || '',
    courierMobile: data.courierMobile || '',
    latestTrace: latestTrace
      ? {
          traceType: latestTrace.traceType,
          traceTime: latestTrace.traceTime || '',
          content: latestTrace.content || ''
        }
      : null,
    items,
    reviewStatus: data.reviewStatus,
    reviewId: data.reviewId,
    aftersaleStatus,
    actions: mapActions(data.actions, aftersaleStatus)
  }
}

/** 评价详情 */
export function mapOrderReview(data) {
  if (!data) return null
  const pics = (data.pics || []).map((p) => resolveFileUrl(p) || p).filter(Boolean)
  return {
    score: Number(data.score) || 0,
    content: data.content || '',
    pics,
    createTime: data.createTime || '',
    replyContent: data.replyContent || '',
    replyTime: data.replyTime || ''
  }
}

/** 售后列表行 */
export function mapAftersaleListRow(row) {
  if (!row) return null
  const specText = (row.goodsSpec || row.specText || '').trim() || '默认'
  return {
    aftersaleId: row.aftersaleId,
    aftersaleNo: row.aftersaleNo || '',
    aftersaleStatus: row.aftersaleStatus,
    statusText:
      row.aftersaleStatusText ||
      row.statusText ||
      mapAftersaleStatusText(row.aftersaleStatus),
    applyType: row.applyType,
    applyTypeText: row.applyTypeText || mapAftersaleApplyTypeText(row.applyType),
    applyReason: row.applyReason || '',
    applyAmount: row.applyAmount,
    applyAmountText: formatPrice(row.applyAmount),
    createTime: row.createTime || '',
    goodsName: row.goodsName || '',
    goodsImage: row.goodsImage || row.mainPic || '',
    mainPic: row.mainPic || '',
    displayPic: resolveFileUrl(row.goodsImage || row.mainPic) || GOODS_PLACEHOLDER,
    specList: parseCartSpecText(specText),
    orderId: row.orderId,
    orderNo: row.orderNo || ''
  }
}

/** 售后详情 */
export function mapAftersaleDetail(data) {
  if (!data) return null
  const info = data.info || data
  const specText = (info.goodsSpec || info.specText || '').trim() || '默认'
  const progressStage = data.progressStage || info.progressStage || ''
  const aftersaleStatus = info.aftersaleStatus || data.aftersaleStatus
  return {
    aftersaleId: info.aftersaleId || data.aftersaleId,
    aftersaleNo: info.aftersaleNo || data.aftersaleNo || '',
    aftersaleStatus,
    statusText:
      info.aftersaleStatusText ||
      info.statusText ||
      mapAftersaleStatusText(aftersaleStatus),
    progress: data.progress || info.progress || progressStage,
    progressText:
      data.progressText ||
      info.progressText ||
      mapAftersaleProgressText(progressStage),
    applyType: info.applyType,
    applyTypeText: info.applyTypeText || mapAftersaleApplyTypeText(info.applyType),
    applyReason: info.applyReason || '',
    returnQuantity: info.returnQuantity,
    applyAmount: info.applyAmount,
    applyAmountText: formatPrice(info.applyAmount),
    description: info.description || '',
    evidencePics: normalizePicList(info.evidencePics).map((p) => resolveFileUrl(p) || p),
    createTime: info.createTime || '',
    finishTime: info.finishTime || '',
    processResult: data.processResult || info.processResult || '',
    orderId: info.orderId,
    orderNo: info.orderNo || data.orderNo || '',
    orderItemId: info.orderItemId,
    goodsName: info.goodsName || '',
    goodsImage: info.goodsImage || info.mainPic || '',
    displayPic: resolveFileUrl(info.goodsImage || info.mainPic) || GOODS_PLACEHOLDER,
    specList: parseCartSpecText(specText),
    quantity: Number(info.quantity) || 1
  }
}

/** 待支付倒计时文案 */
export function formatPayCountdown(seconds) {
  if (seconds == null || seconds <= 0) return '已超时'
  const h = Math.floor(seconds / 3600)
  const m = Math.floor((seconds % 3600) / 60)
  const s = seconds % 60
  if (h > 0) {
    return `${h}:${String(m).padStart(2, '0')}:${String(s).padStart(2, '0')}`
  }
  return `${String(m).padStart(2, '0')}:${String(s).padStart(2, '0')}`
}