js-trie-router-data-mapper/dist/cjs/index.cjs

"use strict";
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/index.js
var index_exports = {};
__export(index_exports, {
  DataSchemaRegistry: () => import_js_data_schema2.DataSchemaRegistry,
  DataType: () => import_js_data_schema2.DataType,
  HTTP_DATA_LIST: () => HTTP_DATA_LIST,
  HttpData: () => HttpData,
  ProjectionSchemaRegistry: () => import_js_data_projector2.ProjectionSchemaRegistry,
  TrieRouterDataMapper: () => TrieRouterDataMapper,
  validateDataMappingSchema: () => validateDataMappingSchema
});
module.exports = __toCommonJS(index_exports);

// src/data-mapping-schema.js
var HttpData = {
  REQUEST_PARAMS: "requestParams",
  REQUEST_QUERY: "requestQuery",
  REQUEST_HEADERS: "requestHeaders",
  REQUEST_COOKIES: "requestCookies",
  REQUEST_BODY: "requestBody",
  RESPONSE_BODY: "responseBody"
};
var HTTP_DATA_LIST = Object.values(HttpData);

// src/trie-router-data-mapper.js
var import_js_service = require("@e22m4u/js-service");
var import_js_format2 = require("@e22m4u/js-format");
var import_js_data_projector = require("@e22m4u/js-data-projector");
var import_js_trie_router = require("@e22m4u/js-trie-router");
var import_js_data_schema = require("@e22m4u/js-data-schema");

// src/validate-data-mapping-schema.js
var import_js_format = require("@e22m4u/js-format");
function validateDataMappingSchema(schema) {
  if (!schema || typeof schema !== "object" || Array.isArray(schema)) {
    throw new import_js_format.InvalidArgumentError(
      "Mapping schema must be an Object, but %v was given.",
      schema
    );
  }
  Object.keys(schema).forEach((propName) => {
    const propOptions = schema[propName];
    if (propOptions === void 0) {
      return;
    }
    if (!propOptions || typeof propOptions !== "object" || Array.isArray(propOptions)) {
      throw new import_js_format.InvalidArgumentError(
        "Property options must be an Object, but %v was given.",
        propOptions
      );
    }
    if (!propOptions.source || typeof propOptions.source !== "string" || !HTTP_DATA_LIST.includes(propOptions.source)) {
      throw new import_js_format.InvalidArgumentError(
        "Data source %v is not supported.",
        propOptions.source
      );
    }
    if (propOptions.property !== void 0 && (!propOptions.property || typeof propOptions.property !== "string")) {
      throw new import_js_format.InvalidArgumentError(
        "Property name must be a non-empty String, but %v was given.",
        propOptions.property
      );
    }
  });
}
__name(validateDataMappingSchema, "validateDataMappingSchema");

// src/trie-router-data-mapper.js
var HTTP_DATA_TO_CONTEXT_PROPERTY_MAP = {
  [HttpData.REQUEST_PARAMS]: "params",
  [HttpData.REQUEST_QUERY]: "query",
  [HttpData.REQUEST_HEADERS]: "headers",
  [HttpData.REQUEST_COOKIES]: "cookies",
  [HttpData.REQUEST_BODY]: "body"
};
var _TrieRouterDataMapper = class _TrieRouterDataMapper extends import_js_service.Service {
  /**
   * Constructor.
   *
   * @param {import('@e22m4u/js-service').ServiceContainer} container
   */
  constructor(container) {
    super(container);
    const router = this.getService(import_js_trie_router.TrieRouter);
    if (!router.hasPreHandler(dataMappingPreHandler)) {
      router.addPreHandler(dataMappingPreHandler);
    }
    if (!router.hasPostHandler(dataMappingPostHandler)) {
      router.addPostHandler(dataMappingPostHandler);
    }
  }
  /**
   * Create state by mapping schema.
   *
   * @param {import('@e22m4u/js-trie-router').RequestContext} ctx
   * @param {import('./data-mapping-schema.js').DataMappingSchema} schema
   * @returns {object}
   */
  createStateByMappingSchema(ctx, schema) {
    if (!(ctx instanceof import_js_trie_router.RequestContext)) {
      throw new import_js_format2.InvalidArgumentError(
        'Parameter "ctx" must be a RequestContext instance, but %v was given.',
        ctx
      );
    }
    validateDataMappingSchema(schema);
    const res = {};
    const dataParser = this.getService(import_js_data_schema.DataParser);
    const dataProjector = this.getService(import_js_data_projector.DataProjector);
    Object.keys(schema).forEach((propName) => {
      const propOptions = schema[propName];
      if (propOptions === void 0) {
        return;
      }
      const ctxProp = HTTP_DATA_TO_CONTEXT_PROPERTY_MAP[propOptions.source];
      if (ctxProp === void 0) {
        return;
      }
      let value = ctx[ctxProp];
      if (propOptions.property && typeof propOptions.property === "string") {
        if (value && typeof value === "object" && !Array.isArray(value)) {
          value = value[propOptions.property];
        } else {
          throw new import_js_format2.InvalidArgumentError(
            "Property %v does not exist in %v value from the property %v of the request context.",
            propOptions.property,
            value,
            ctxProp
          );
        }
      }
      if (propOptions.schema !== void 0) {
        const sourcePath = propOptions.property ? `request.${ctxProp}.${propOptions.property}` : `request.${ctxProp}`;
        if (import_js_data_schema.DATA_TYPE_LIST.includes(propOptions.schema)) {
          const dataSchema = { type: propOptions.schema };
          value = dataParser.parse(value, dataSchema, { sourcePath });
        } else {
          value = dataParser.parse(value, propOptions.schema, { sourcePath });
        }
      }
      if (propOptions.projection !== void 0) {
        value = dataProjector.projectInput(value, propOptions.projection);
      }
      res[propName] = value;
    });
    return res;
  }
  /**
   * Filter response by mapping schema.
   *
   * @param {*} data
   * @param {import('./data-mapping-schema.js').DataMappingSchema} schema
   * @returns {*}
   */
  filterResponseByMappingSchema(data, schema) {
    validateDataMappingSchema(schema);
    let res = data;
    const dataParser = this.getService(import_js_data_schema.DataParser);
    const dataProjector = this.getService(import_js_data_projector.DataProjector);
    Object.keys(schema).forEach((propName) => {
      const propOptions = schema[propName];
      if (propOptions === void 0) {
        return;
      }
      if (propOptions.source !== HttpData.RESPONSE_BODY) {
        return;
      }
      if (propOptions.property !== void 0) {
        throw new import_js_format2.InvalidArgumentError(
          'Option "property" is not supported for the %v source, but %v was given.',
          propOptions.property
        );
      }
      if (propOptions.schema !== void 0) {
        const sourcePath = "response.body";
        if (import_js_data_schema.DATA_TYPE_LIST.includes(propOptions.schema)) {
          const dataSchema = { type: propOptions.schema };
          res = dataParser.parse(res, dataSchema, { sourcePath });
        } else {
          res = dataParser.parse(res, propOptions.schema, { sourcePath });
        }
      }
      if (propOptions.projection !== void 0) {
        res = dataProjector.projectOutput(res, propOptions.projection);
      }
    });
    return res;
  }
};
__name(_TrieRouterDataMapper, "TrieRouterDataMapper");
var TrieRouterDataMapper = _TrieRouterDataMapper;
function dataMappingPreHandler(ctx) {
  const schema = (ctx.meta || {}).dataMap;
  if (schema === void 0) {
    return;
  }
  const mapper = ctx.container.get(TrieRouterDataMapper);
  const state = mapper.createStateByMappingSchema(ctx, schema);
  ctx.state = { ...ctx.state, ...state };
}
__name(dataMappingPreHandler, "dataMappingPreHandler");
function dataMappingPostHandler(ctx, data) {
  const schema = (ctx.meta || {}).dataMap;
  if (schema === void 0) {
    return;
  }
  const mapper = ctx.container.get(TrieRouterDataMapper);
  return mapper.filterResponseByMappingSchema(data, schema);
}
__name(dataMappingPostHandler, "dataMappingPostHandler");

// src/index.js
var import_js_data_projector2 = require("@e22m4u/js-data-projector");
var import_js_data_schema2 = require("@e22m4u/js-data-schema");
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  DataSchemaRegistry,
  DataType,
  HTTP_DATA_LIST,
  HttpData,
  ProjectionSchemaRegistry,
  TrieRouterDataMapper,
  validateDataMappingSchema
});