simple-command-bus/lib/handler/Locator/NamespaceHandlerLocator.js

Simple Command Bus

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _utils = require("../../utils");

var _HandlerLocator2 = _interopRequireDefault(require("./HandlerLocator"));

var _MissingHandlerException = _interopRequireDefault(require("../../exceptions/MissingHandlerException"));

var _InvalidCommandException = _interopRequireDefault(require("../../exceptions/InvalidCommandException"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

var NamespaceHandlerLocator =
/*#__PURE__*/
function (_HandlerLocator) {
  _inherits(NamespaceHandlerLocator, _HandlerLocator);

  function NamespaceHandlerLocator(handlersPath) {
    var _this;

    _classCallCheck(this, NamespaceHandlerLocator);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(NamespaceHandlerLocator).call(this));

    if (!handlersPath || !(0, _utils.isDirectory)(handlersPath)) {
      throw new Error('Invalid commands path.');
    }

    _this.handlers = (0, _utils.walkSync)(handlersPath);
    return _this;
  }

  _createClass(NamespaceHandlerLocator, [{
    key: "getHandlerForCommand",
    value: function getHandlerForCommand(commandName) {
      if ((0, _utils.isString)(commandName) === false) {
        throw new _InvalidCommandException["default"]();
      }

      var handlerName = "".concat(commandName.replace('Command', 'Handler'), ".js");
      var foundHandler = this.handlers.find(function (handler) {
        return handler.endsWith(handlerName);
      });

      if (!foundHandler) {
        _MissingHandlerException["default"].forCommand(commandName);
      }

      var Handler = require(foundHandler);

      if ((0, _utils.isFunction)(Handler) === false) {
        _MissingHandlerException["default"].forCommand(commandName);
      }

      return new Handler();
    }
  }]);

  return NamespaceHandlerLocator;
}(_HandlerLocator2["default"]);

exports["default"] = NamespaceHandlerLocator;