@pisell/pisellos/lib/model/strategy/adapter/walletPass/evaluator.js

一个可扩展的前端模块化SDK框架，支持插件系统

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// src/model/strategy/adapter/walletPass/evaluator.ts
var evaluator_exports = {};
__export(evaluator_exports, {
  WalletPassEvaluator: () => WalletPassEvaluator
});
module.exports = __toCommonJS(evaluator_exports);
var import__ = require("../../index");
var import_utils = require("./utils");
var import_locales = require("./locales");
var import_decimal = __toESM(require("decimal.js"));
var defaultStrategyMetadataCustom = {
  maxDeductionAmount: 99999,
  maxUsagePerOrder: 0,
  allowCrossProduct: true,
  applicableProductLimit: 0,
  deductTaxAndFee: true,
  maxPassesPerItem: 0
};
var WalletPassEvaluator = class {
  constructor() {
    this.strategyConfigs = [];
    this.locale = "en";
    this.engine = new import__.StrategyEngine({
      debug: false,
      enableTrace: false
    });
  }
  setStrategyConfigs(strategyConfigs) {
    const newStrategyConfigs = strategyConfigs.filter((item) => item.metadata.type === "wallet_pass");
    this.strategyConfigs = newStrategyConfigs;
  }
  getStrategyConfigs() {
    return this.strategyConfigs;
  }
  setLocale(locale) {
    this.locale = locale;
  }
  getText(key) {
    var _a, _b;
    return (_b = (_a = import_locales.locales) == null ? void 0 : _a[this.locale]) == null ? void 0 : _b[key];
  }
  /**
   * 搜索券的格式
   * @param input 输入
   * @returns 返回搜索券的格式
   */
  searchVoucherFormat(input) {
    const results = this.evaluate(input);
    return results.map((item) => {
      var _a, _b;
      if (item.isApplicable) {
        return {
          ...item.voucher,
          config: {
            ...(_a = item == null ? void 0 : item.strategyResult) == null ? void 0 : _a.config.metadata.custom
          }
        };
      } else {
        return {
          ...item.voucher,
          config: {
            ...(_b = item == null ? void 0 : item.strategyResult) == null ? void 0 : _b.config.metadata.custom
          },
          _unified_available_status: 0,
          reason: item.reason,
          reasonCode: item.reasonCode
        };
      }
    });
  }
  /**
   * 评估可用的 vouchers
   */
  evaluate(input) {
    var _a, _b;
    const { orderTotalAmount, products, vouchers, strategyConfigs } = input;
    const productIds = products.map((p) => p.product_id);
    const results = [];
    for (const voucher of vouchers) {
      const applicableStrategies = this.findApplicableStrategies(
        voucher,
        strategyConfigs || this.strategyConfigs
      );
      if (applicableStrategies.length === 0) {
        results.push({
          voucher,
          isApplicable: true,
          canUseCount: 0,
          maxDeduction: 0,
          deductTaxAndFee: true,
          applicableProductIds: [],
          reason: "",
          reasonCode: "",
          strategyResult: {
            config: {
              metadata: {
                custom: {
                  ...defaultStrategyMetadataCustom
                }
              }
            }
          }
        });
        continue;
      }
      const strategy = applicableStrategies[0];
      const applicableProductIds = (0, import_utils.getApplicableProductIds)(voucher);
      const { applicableTotal, applicableCount } = this.calculateApplicableProducts(
        products,
        applicableProductIds,
        ((_b = (_a = strategy == null ? void 0 : strategy.metadata) == null ? void 0 : _a.custom) == null ? void 0 : _b.deductTaxAndFee) ?? true
      );
      const context = {
        entities: {
          voucher,
          products,
          order: {
            orderTotalAmount,
            products
          }
        },
        attributes: {
          orderTotalAmount,
          applicableProductTotalAmount: applicableTotal,
          applicableProductCount: applicableCount,
          voucherProductId: voucher.product_id,
          productIds
        },
        metadata: {
          timestamp: Date.now()
        }
      };
      const evaluationResult = this.engine.evaluate(strategy, context);
      const businessConfig = strategy.metadata.custom || {};
      const maxDeduction = businessConfig.maxDeductionAmount || 0;
      const canUseCount = businessConfig.maxUsagePerOrder || 0;
      const deductTaxAndFee = businessConfig.deductTaxAndFee ?? true;
      if (evaluationResult.applicable) {
        results.push({
          voucher,
          isApplicable: true,
          canUseCount,
          maxDeduction,
          deductTaxAndFee,
          applicableProductIds: applicableProductIds || [],
          strategyResult: evaluationResult
        });
      } else {
        let reasonCode = "not_meet_the_required_conditions";
        if (evaluationResult.code) {
          const codeMapping = {
            INSUFFICIENT_AMOUNT: "not_meet_the_required_conditions",
            USAGE_LIMIT_EXCEEDED: "usage_limit_reached",
            CHANNEL_NOT_ALLOWED: "not_available_for_this_channel",
            ORDER_TYPE_NOT_ALLOWED: "not_valid_for_this_order_type",
            DEDUCTION_LIMIT_EXCEEDED: "exceeds_the_maximum_deduction_limit"
          };
          reasonCode = codeMapping[evaluationResult.code] || "not_meet_the_required_conditions";
        }
        results.push({
          voucher,
          isApplicable: false,
          canUseCount: 0,
          maxDeduction: 0,
          deductTaxAndFee: false,
          applicableProductIds: [],
          reason: this.getText(reasonCode),
          reasonCode,
          strategyResult: evaluationResult
        });
      }
    }
    return results;
  }
  /** 检查代金券/折扣卡是否可用 并返回config */
  checkVoucherAvailability(input) {
    var _a, _b, _c, _d, _e;
    const { orderTotalAmount, products, vouchers } = input;
    const results = this.evaluate(input);
    const isAvailable = ((_a = results[0]) == null ? void 0 : _a.isApplicable) || false;
    return {
      isAvailable,
      config: {
        ...(_e = (_d = (_c = (_b = results[0]) == null ? void 0 : _b.strategyResult) == null ? void 0 : _c.config) == null ? void 0 : _d.metadata) == null ? void 0 : _e.custom
      }
    };
  }
  /**
   * 获取推荐券
   * @param input 输入
   * @returns 返回推荐券列表
   */
  getRecommendedVouchers(input) {
    const { orderTotalAmount, products, vouchers } = input;
    const noApplicableVoucher = [];
    const applicableVoucher = [];
    vouchers.forEach((voucher) => {
      if (voucher.unified_available_status === 1) {
        applicableVoucher.push(voucher);
      } else {
        noApplicableVoucher.push(voucher);
      }
    });
    const results = this.evaluate({
      ...input,
      vouchers: applicableVoucher
    });
    const newVouchers = [];
    results.forEach((item) => {
      var _a, _b, _c;
      if (item.isApplicable) {
        newVouchers.push({
          ...item.voucher,
          config: {
            ...defaultStrategyMetadataCustom,
            ...((_c = (_b = (_a = item == null ? void 0 : item.strategyResult) == null ? void 0 : _a.config) == null ? void 0 : _b.metadata) == null ? void 0 : _c.custom) || {}
          }
        });
      } else {
        noApplicableVoucher.push({
          ...item.voucher,
          _unified_available_status: 0,
          reason: item.reason,
          reasonCode: item.reasonCode
        });
      }
    });
    const { recommended, transformList } = this.processVouchers(
      newVouchers,
      orderTotalAmount,
      products
    );
    const recommendedAmount = recommended.reduce((sum, item) => {
      return new import_decimal.default(sum).add(item._available_max_amount || 0).toNumber();
    }, 0);
    return {
      // 推荐券总金额
      recommendedAmount,
      // 推荐券列表
      recommended,
      // 格式化后的可用券列表
      transformList,
      // 后端不可用券列表 和前端基于策略返回的 不可用列表 合并
      noApplicableVoucher
    };
  }
  enhanceWithReason(voucher) {
    if (voucher._unified_available_status === 0 && voucher.reasonCode) {
      return {
        ...voucher,
        reason: this.getText(voucher.reasonCode)
      };
    }
    return voucher;
  }
  /**
   * 优惠券处理函数
   * @param applicableVouchers 可用的券列表
   * @param orderTotalAmount 订单总金额
   * @param products 订单商品列表
   * @returns 返回推荐券列表和全部列表，每个券包含 _available_max_amount 和 _unified_available_status
   */
  processVouchers(vouchers, orderTotalAmount, products) {
    const result = (0, import_utils.processVouchers)(vouchers, orderTotalAmount, products);
    return {
      recommended: result.recommended.map(
        (item) => this.enhanceWithReason(item)
      ),
      transformList: result.transformList.map(
        (item) => this.enhanceWithReason(item)
      )
    };
  }
  /**
   * 重新计算优惠券状态（基于已选券的增量计算）
   * @param allVouchers 所有原始券列表
   * @param selectedVouchers 已选中的券列表（按选中顺序）
   * @param orderTotalAmount 订单总金额
   * @param products 订单商品列表
   * @returns 返回更新后的所有券列表和已选券的详细抵扣信息
   */
  recalculateVouchers(allVouchers, selectedVouchers, orderTotalAmount, products) {
    const result = (0, import_utils.recalculateVouchers)(
      allVouchers,
      selectedVouchers,
      orderTotalAmount,
      products
    );
    return {
      allWithUpdatedStatus: result.allWithUpdatedStatus.map(
        (item) => this.enhanceWithReason(item)
      ),
      selectedWithDetails: result.selectedWithDetails.map(
        (item) => this.enhanceWithReason(item)
      )
    };
  }
  /**
   * 查找适用于指定 voucher 的策略配置
   */
  findApplicableStrategies(voucher, strategyConfigs) {
    return strategyConfigs.filter((config) => {
      return this.checkVoucherInStrategy(voucher.product_id, config);
    });
  }
  /**
   * 检查策略中是否包含指定的 voucher ID
   */
  checkVoucherInStrategy(voucherProductId, config) {
    const rules = config.conditions.rules;
    for (const rule of rules) {
      if ("operator" in rule && "rules" in rule) {
        if (this.checkVoucherInConditionGroup(voucherProductId, rule)) {
          return true;
        }
      } else {
        const conditionRule = rule;
        if (conditionRule.field === "voucherProductId" && conditionRule.operator === "in" && Array.isArray(conditionRule.value)) {
          if (conditionRule.value.includes(voucherProductId)) {
            return true;
          }
        }
        if (conditionRule.field === "voucherProductId" && (conditionRule.operator === "=" || conditionRule.operator === "==")) {
          if (conditionRule.value === voucherProductId) {
            return true;
          }
        }
      }
    }
    return false;
  }
  /**
   * 递归检查条件组中是否包含 voucher ID
   */
  checkVoucherInConditionGroup(voucherProductId, group) {
    for (const rule of group.rules) {
      if ("operator" in rule && "rules" in rule) {
        if (this.checkVoucherInConditionGroup(voucherProductId, rule)) {
          return true;
        }
      } else {
        if (rule.field === "voucherProductId" && rule.operator === "in" && Array.isArray(rule.value)) {
          if (rule.value.includes(voucherProductId)) {
            return true;
          }
        }
        if (rule.field === "voucherProductId" && (rule.operator === "=" || rule.operator === "==")) {
          if (rule.value === voucherProductId) {
            return true;
          }
        }
      }
    }
    return false;
  }
  /**
   * 计算适用商品的总金额和数量
   */
  calculateApplicableProducts(products, applicableProductIds, deductTaxAndFee) {
    let total = 0;
    let count = 0;
    if (applicableProductIds !== null && applicableProductIds.length === 0) {
      return { applicableTotal: 0, applicableCount: 0 };
    }
    products.forEach((product) => {
      const productQuantity = (0, import_utils.getProductQuantity)(product);
      const isMainProductApplicable = applicableProductIds === null || applicableProductIds.includes(product.product_id);
      if (isMainProductApplicable) {
        total += (0, import_utils.getMainProductPrice)(product, deductTaxAndFee) * productQuantity;
        count += productQuantity;
      }
      if (product.product_bundle && product.product_bundle.length > 0) {
        product.product_bundle.forEach((bundleItem) => {
          if ((0, import_utils.getBundleItemIsOriginalPrice)(bundleItem)) {
            const isBundleItemApplicable = applicableProductIds === null || applicableProductIds.includes(bundleItem.bundle_product_id);
            if (isBundleItemApplicable) {
              const bundleItemQuantity = bundleItem.num * productQuantity;
              total += (0, import_utils.getBundleItemPrice)(
                bundleItem,
                productQuantity,
                deductTaxAndFee
              );
              count += bundleItemQuantity;
            }
          }
        });
      }
    });
    return { applicableTotal: total, applicableCount: count };
  }
};
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  WalletPassEvaluator
});