demeine/lib/aggregate/DefaultEventHandler.js

DDDD - Distributed Domain Driven Design

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
Object.defineProperty(exports, "DefaultEventHandler", {
    enumerable: true,
    get: function() {
        return DefaultEventHandler;
    }
});
var _stringUtils = require("../utils/stringUtils");
function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
        throw new TypeError("Cannot call a class as a function");
    }
}
var DefaultEventHandler = /*#__PURE__*/ function() {
    "use strict";
    function DefaultEventHandler() {
        _classCallCheck(this, DefaultEventHandler);
    }
    var _proto = DefaultEventHandler.prototype;
    _proto.handle = function handle(aggregate, event) {
        var type = event.type;
        var key = this._extractKey(type);
        var funcName = "apply".concat((0, _stringUtils.capitalize)(key));
        var applier = aggregate[funcName];
        if (applier) {
            return applier.bind(aggregate)(event);
        } else {
            throw new Error("Unable to apply event ".concat(type, " || ").concat(funcName));
        }
    };
    _proto._extractKey = function _extractKey(type) {
        var parts = type.split(".");
        var filteredParts = [];
        for(var i = 1; i < parts.length - 1; i++){
            filteredParts.push(parts[i]);
        }
        return (0, _stringUtils.camelCase)(filteredParts.join("_"));
    };
    return DefaultEventHandler;
}();