@elium/mighty/core/utils/hook.js

Context agnostic TS & JS ORM

"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
Object.defineProperty(exports, "__esModule", { value: true });
var _ = require("lodash");
var Observable_1 = require("rxjs/Observable");
require("rxjs/add/observable/of");
require("rxjs/add/operator/mergeMap");
var Hook = (function () {
    function Hook(name, action) {
        this.name = name;
        this.map = action;
    }
    return Hook;
}());
exports.Hook = Hook;
function hookable(constructor) {
    constructor.prototype.hooks = [];
    constructor.prototype.addHook = addHook;
    constructor.prototype.removeHook = removeHook;
    constructor.prototype.applyHook = applyHook;
    function addHook(hook) {
        var existingHook = _.find(this.hooks, {
            name: hook.name,
            map: hook.map
        });
        if (!_.isEmpty(existingHook)) {
            existingHook.map = hook.map;
        }
        else {
            this.hooks.push(hook);
        }
    }
    function removeHook(hook) {
        _.remove(this.hooks, { name: hook.name, map: hook.map });
    }
    function applyHook(name, input) {
        var hooks = _.filter(this.hooks, { name: name });
        var source = Observable_1.Observable.of(input);
        _.forEach(hooks, function (hook) {
            if (_.isFunction(hook.map)) {
                source = source.flatMap(function (input) { return hook.map(input); });
            }
        });
        return source;
    }
}
exports.hookable = hookable;
var Hookable = (function () {
    function Hookable() {
        this.hooks = [];
    }
    return Hookable;
}());
Hookable = __decorate([
    hookable
], Hookable);
exports.Hookable = Hookable;
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