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;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
import { PostMessageBus, PostMessageBusSink, PostMessageBusSource } from 'angular2/src/web_workers/shared/post_message_bus';
import { MessageBus } from 'angular2/src/web_workers/shared/message_bus';
import { APP_INITIALIZER } from 'angular2/core';
import { Injector, Injectable } from 'angular2/src/core/di';
import { WORKER_RENDER_APPLICATION_COMMON, WORKER_SCRIPT, initializeGenericWorkerRenderer } from 'angular2/src/platform/worker_render_common';
import { BaseException } from 'angular2/src/facade/exceptions';
/**
 * Wrapper class that exposes the Worker
 * and underlying {@link MessageBus} for lower level message passing.
 */
export let WebWorkerInstance = class WebWorkerInstance {
    /** @internal */
    init(worker, bus) {
        this.worker = worker;
        this.bus = bus;
    }
};
WebWorkerInstance = __decorate([
    Injectable(), 
    __metadata('design:paramtypes', [])
], WebWorkerInstance);
/**
 * An array of providers that should be passed into `application()` when initializing a new Worker.
 */
export const WORKER_RENDER_APPLICATION = [
    WORKER_RENDER_APPLICATION_COMMON, WebWorkerInstance,
    /*@ts2dart_Provider*/ {
        provide: APP_INITIALIZER,
        useFactory: (injector => () => initWebWorkerApplication(injector)),
        multi: true,
        deps: [Injector]
    },
    /*@ts2dart_Provider*/ {
        provide: MessageBus,
        useFactory: (instance) => instance.bus,
        deps: [WebWorkerInstance]
    }
];
function initWebWorkerApplication(injector) {
    var scriptUri;
    try {
        scriptUri = injector.get(WORKER_SCRIPT);
    }
    catch (e) {
        throw new BaseException("You must provide your WebWorker's initialization script with the WORKER_SCRIPT token");
    }
    let instance = injector.get(WebWorkerInstance);
    spawnWebWorker(scriptUri, instance);
    initializeGenericWorkerRenderer(injector);
}
/**
 * Spawns a new class and initializes the WebWorkerInstance
 */
function spawnWebWorker(uri, instance) {
    var webWorker = new Worker(uri);
    var sink = new PostMessageBusSink(webWorker);
    var source = new PostMessageBusSource(webWorker);
    var bus = new PostMessageBus(sink, source);
    instance.init(webWorker, bus);
}
