/**
 * 审批详情页面
 * 职责：展示订单完整信息（含报价明细和分层价格），支持审批通过/驳回操作。
 */

function mapOrderStatus(status) {
  var app = getApp();
  return app.mapOrderStatus(status);
}

function getStatusBadge(status) {
  var map = {
    pending_approve: "badge-orange", cancel_pending: "badge-orange",
    approved: "badge-green", rejected: "badge-red",
    pending_factory: "badge-blue", delivered: "badge-green", canceled: "badge-red",
  };
  return map[status] || "badge-gray";
}

Page({
  data: {
    statusBarHeight: 20,
    taskId: null,
    loading: true,
    actionLoading: false,
    message: "",
    approveOpinion: "",
    orderInfo: null,
    pricingItems: [],
  },

  async onLoad(options) {
    var app = getApp();
    this.setData({
      statusBarHeight: app.globalData.statusBarHeight || 20,
      taskId: Number(options.id || 0),
    });
    await this.loadDetail();
  },

  async loadDetail() {
    var app = getApp();
    this.setData({ loading: true, message: "" });
    try {
      var data = await app.request({ url: "/api/orders/" + this.data.taskId, method: "GET" });
      var sale = Number(data.sale_price_total || 0);
      var cost = Number(data.cost_price_total || 0);
      var profit = Number(data.profit_total || 0);
      var profitRate = sale > 0 ? (profit / sale * 100).toFixed(1) + "%" : "-";

      var calcDetail = data.calculation_detail || {};
      var calcItems = calcDetail.item_details || [];
      var pricingItems = [];
      for (var i = 0; i < calcItems.length; i++) {
        var ci = calcItems[i];
        if (!ci.pricing_type) continue;
        var surchargeItems = [];
        if (ci.surcharge_items) {
          for (var j = 0; j < ci.surcharge_items.length; j++) {
            surchargeItems.push({ key: ci.surcharge_items[j].key, name: ci.surcharge_items[j].name, amount: Number(ci.surcharge_items[j].amount || 0).toFixed(2) });
          }
        }
        var totalSurcharge = 0;
        for (var k = 0; k < surchargeItems.length; k++) { totalSurcharge += Number(surchargeItems[k].amount); }
        var tierPrices = [];
        if (data.sale_price_tier) {
          var tierNames = { special: "特批价", tier1: "一级经销", tier2: "二级经销", default: "默认" };
          var tierKeys = Object.keys(data.sale_price_tier);
          for (var t = 0; t < tierKeys.length; t++) {
            tierPrices.push({ code: tierKeys[t], name: tierNames[tierKeys[t]] || tierKeys[t], price: Number(data.sale_price_tier[tierKeys[t]] || 0).toFixed(2) });
          }
        }
        pricingItems.push({
          product_name: ci.product_name, pricing_type: ci.pricing_type,
          length_m: ci.length_m, width_m: ci.width_m,
          area_sqm: ci.area_sqm ? Number(ci.area_sqm).toFixed(4) : null,
          baseCost: Number(ci.cost_amount || 0).toFixed(2),
          surchargeItems: surchargeItems, totalSurcharge: totalSurcharge.toFixed(2),
          costPrice: (Number(ci.cost_amount || 0) + totalSurcharge).toFixed(2),
          formula_detail: ci.pricing_type ? ci.product_name + " " + (ci.length_m ? ci.length_m + "m × " + ci.width_m + "m" : "") + " 成本¥" + Number(ci.cost_amount || 0).toFixed(2) : "",
          tierPrices: tierPrices,
        });
      }

      this.setData({
        orderInfo: Object.assign({}, data, {
          statusText: mapOrderStatus(data.order_status), badgeClass: getStatusBadge(data.order_status),
          salePriceTotalText: sale.toFixed(2), costPriceTotalText: cost.toFixed(2),
          rebateTotalText: Number(data.rebate_total || 0).toFixed(2),
          freightTotalText: Number(data.freight_total || 0).toFixed(2),
          profitTotalText: profit.toFixed(2), profitRate: profitRate,
        }),
        pricingItems: pricingItems,
      });
    } catch (error) {
      this.setData({ message: error.message || "加载失败" });
    } finally {
      this.setData({ loading: false });
    }
  },

  handleOpinionInput: function (event) {
    this.setData({ approveOpinion: event.detail.value });
  },

  handleApprove: function (event) {
    var that = this;
    var result = event.currentTarget.dataset.result;
    var orderInfo = this.data.orderInfo;
    if (!orderInfo) return;
    var isCancelFlow = ["cancel_pending", "cancel_fulfillment_pending"].indexOf(orderInfo.order_status) >= 0;
    var targetUrl = isCancelFlow
      ? "/api/orders/" + orderInfo.order_id + "/cancel-approve"
      : "/api/orders/" + orderInfo.order_id + "/approve";
    var confirmMsg = result === "pass"
      ? (isCancelFlow ? "确认同意取消此订单？" : "确认审批通过？")
      : (isCancelFlow ? "确认驳回取消申请？" : "确认退回此订单？");

    wx.showModal({
      title: "确认操作",
      content: confirmMsg,
      confirmColor: result === "pass" ? "#2563eb" : "#be123c",
      success: function (res) {
        if (!res.confirm) return;
        var app = getApp();
        that.setData({ actionLoading: true, message: "" });
        var opinion = that.data.approveOpinion || (result === "pass" ? "同意" : "退回");
        app.request({
          url: targetUrl, method: "POST",
          data: { approve_result: result, approve_opinion: opinion },
        }).then(function () {
          wx.showToast({ title: result === "pass" ? "审批通过" : "已退回", icon: "success" });
          return that.loadDetail();
        }).catch(function (error) {
          that.setData({ message: error.message || "操作失败" });
        }).finally(function () {
          that.setData({ actionLoading: false });
        });
      },
    });
  },

  handleBack: function () { wx.navigateBack({ delta: 1 }); },
});