import { Inject, Injectable, InjectionToken, Optional } from './di';
import { isObservable, isPromise } from './util/lang';
import { noop } from './util/noop';
import * as i0 from "./r3_symbols";
/**
 * A [DI token](guide/glossary#di-token "DI token definition") that you can use to provide
 * one or more initialization functions.
 *
 * The provided functions are injected at application startup and executed during
 * app initialization. If any of these functions returns a Promise or an Observable, initialization
 * does not complete until the Promise is resolved or the Observable is completed.
 *
 * You can, for example, create a factory function that loads language data
 * or an external configuration, and provide that function to the `APP_INITIALIZER` token.
 * The function is executed during the application bootstrap process,
 * and the needed data is available on startup.
 *
 * @see `ApplicationInitStatus`
 *
 * @usageNotes
 *
 * The following example illustrates how to configure a multi-provider using `APP_INITIALIZER` token
 * and a function returning a promise.
 *
 * ```
 *  function initializeApp(): Promise<any> {
 *    return new Promise((resolve, reject) => {
 *      // Do some asynchronous stuff
 *      resolve();
 *    });
 *  }
 *
 *  @NgModule({
 *   imports: [BrowserModule],
 *   declarations: [AppComponent],
 *   bootstrap: [AppComponent],
 *   providers: [{
 *     provide: APP_INITIALIZER,
 *     useFactory: () => initializeApp,
 *     multi: true
 *    }]
 *   })
 *  export class AppModule {}
 * ```
 *
 * It's also possible to configure a multi-provider using `APP_INITIALIZER` token and a function
 * returning an observable, see an example below. Note: the `HttpClient` in this example is used for
 * demo purposes to illustrate how the factory function can work with other providers available
 * through DI.
 *
 * ```
 *  function initializeAppFactory(httpClient: HttpClient): () => Observable<any> {
 *   return () => httpClient.get("https://someUrl.com/api/user")
 *     .pipe(
 *        tap(user => { ... })
 *     );
 *  }
 *
 *  @NgModule({
 *    imports: [BrowserModule, HttpClientModule],
 *    declarations: [AppComponent],
 *    bootstrap: [AppComponent],
 *    providers: [{
 *      provide: APP_INITIALIZER,
 *      useFactory: initializeAppFactory,
 *      deps: [HttpClient],
 *      multi: true
 *    }]
 *  })
 *  export class AppModule {}
 * ```
 *
 * @publicApi
 */
export const APP_INITIALIZER = new InjectionToken('Application Initializer');
/**
 * A class that reflects the state of running {@link APP_INITIALIZER} functions.
 *
 * @publicApi
 */
export class ApplicationInitStatus {
    constructor(appInits) {
        this.appInits = appInits;
        this.resolve = noop;
        this.reject = noop;
        this.initialized = false;
        this.done = false;
        this.donePromise = new Promise((res, rej) => {
            this.resolve = res;
            this.reject = rej;
        });
    }
    /** @internal */
    runInitializers() {
        if (this.initialized) {
            return;
        }
        const asyncInitPromises = [];
        const complete = () => {
            this.done = true;
            this.resolve();
        };
        if (this.appInits) {
            for (let i = 0; i < this.appInits.length; i++) {
                const initResult = this.appInits[i]();
                if (isPromise(initResult)) {
                    asyncInitPromises.push(initResult);
                }
                else if (isObservable(initResult)) {
                    const observableAsPromise = new Promise((resolve, reject) => {
                        initResult.subscribe({ complete: resolve, error: reject });
                    });
                    asyncInitPromises.push(observableAsPromise);
                }
            }
        }
        Promise.all(asyncInitPromises)
            .then(() => {
            complete();
        })
            .catch(e => {
            this.reject(e);
        });
        if (asyncInitPromises.length === 0) {
            complete();
        }
        this.initialized = true;
    }
}
ApplicationInitStatus.ɵfac = function ApplicationInitStatus_Factory(t) { return new (t || ApplicationInitStatus)(i0.ɵɵinject(APP_INITIALIZER, 8)); };
ApplicationInitStatus.ɵprov = /*@__PURE__*/ i0.ɵɵdefineInjectable({ token: ApplicationInitStatus, factory: ApplicationInitStatus.ɵfac, providedIn: 'root' });
(function () { (typeof ngDevMode === "undefined" || ngDevMode) && i0.setClassMetadata(ApplicationInitStatus, [{
        type: Injectable,
        args: [{ providedIn: 'root' }]
    }], function () { return [{ type: undefined, decorators: [{
                type: Inject,
                args: [APP_INITIALIZER]
            }, {
                type: Optional
            }] }]; }, null); })();
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"application_init.js","sourceRoot":"","sources":["../../../../../../packages/core/src/application_init.ts"],"names":[],"mappings":"AAUA,OAAO,EAAC,MAAM,EAAE,UAAU,EAAE,cAAc,EAAE,QAAQ,EAAC,MAAM,MAAM,CAAC;AAClE,OAAO,EAAC,YAAY,EAAE,SAAS,EAAC,MAAM,aAAa,CAAC;AACpD,OAAO,EAAC,IAAI,EAAC,MAAM,aAAa,CAAC;;AAGjC;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GAqEG;AACH,MAAM,CAAC,MAAM,eAAe,GACxB,IAAI,cAAc,CACd,yBAAyB,CAAC,CAAC;AAEnC;;;;GAIG;AAEH,MAAM,OAAO,qBAAqB;IAOhC,YAAkE,QACc;QADd,aAAQ,GAAR,QAAQ,CACM;QAPxE,YAAO,GAAG,IAAI,CAAC;QACf,WAAM,GAAG,IAAI,CAAC;QACd,gBAAW,GAAG,KAAK,CAAC;QAEZ,SAAI,GAAG,KAAK,CAAC;QAI3B,IAAI,CAAC,WAAW,GAAG,IAAI,OAAO,CAAC,CAAC,GAAG,EAAE,GAAG,EAAE,EAAE;YAC1C,IAAI,CAAC,OAAO,GAAG,GAAG,CAAC;YACnB,IAAI,CAAC,MAAM,GAAG,GAAG,CAAC;QACpB,CAAC,CAAC,CAAC;IACL,CAAC;IAED,gBAAgB;IAChB,eAAe;QACb,IAAI,IAAI,CAAC,WAAW,EAAE;YACpB,OAAO;SACR;QAED,MAAM,iBAAiB,GAAmB,EAAE,CAAC;QAE7C,MAAM,QAAQ,GAAG,GAAG,EAAE;YACnB,IAAwB,CAAC,IAAI,GAAG,IAAI,CAAC;YACtC,IAAI,CAAC,OAAO,EAAE,CAAC;QACjB,CAAC,CAAC;QAEF,IAAI,IAAI,CAAC,QAAQ,EAAE;YACjB,KAAK,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,QAAQ,CAAC,MAAM,EAAE,CAAC,EAAE,EAAE;gBAC7C,MAAM,UAAU,GAAG,IAAI,CAAC,QAAQ,CAAC,CAAC,CAAC,EAAE,CAAC;gBACtC,IAAI,SAAS,CAAC,UAAU,CAAC,EAAE;oBACzB,iBAAiB,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;iBACpC;qBAAM,IAAI,YAAY,CAAC,UAAU,CAAC,EAAE;oBACnC,MAAM,mBAAmB,GAAG,IAAI,OAAO,CAAO,CAAC,OAAO,EAAE,MAAM,EAAE,EAAE;wBAChE,UAAU,CAAC,SAAS,CAAC,EAAC,QAAQ,EAAE,OAAO,EAAE,KAAK,EAAE,MAAM,EAAC,CAAC,CAAC;oBAC3D,CAAC,CAAC,CAAC;oBACH,iBAAiB,CAAC,IAAI,CAAC,mBAAmB,CAAC,CAAC;iBAC7C;aACF;SACF;QAED,OAAO,CAAC,GAAG,CAAC,iBAAiB,CAAC;aACzB,IAAI,CAAC,GAAG,EAAE;YACT,QAAQ,EAAE,CAAC;QACb,CAAC,CAAC;aACD,KAAK,CAAC,CAAC,CAAC,EAAE;YACT,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;QACjB,CAAC,CAAC,CAAC;QAEP,IAAI,iBAAiB,CAAC,MAAM,KAAK,CAAC,EAAE;YAClC,QAAQ,EAAE,CAAC;SACZ;QACD,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC;IAC1B,CAAC;;0FAtDU,qBAAqB,cAOZ,eAAe;2EAPxB,qBAAqB,WAArB,qBAAqB,mBADT,MAAM;sFAClB,qBAAqB;cADjC,UAAU;eAAC,EAAC,UAAU,EAAE,MAAM,EAAC;;sBAQjB,MAAM;uBAAC,eAAe;;sBAAG,QAAQ","sourcesContent":["/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Observable} from 'rxjs';\n\nimport {Inject, Injectable, InjectionToken, Optional} from './di';\nimport {isObservable, isPromise} from './util/lang';\nimport {noop} from './util/noop';\n\n\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") that you can use to provide\n * one or more initialization functions.\n *\n * The provided functions are injected at application startup and executed during\n * app initialization. If any of these functions returns a Promise or an Observable, initialization\n * does not complete until the Promise is resolved or the Observable is completed.\n *\n * You can, for example, create a factory function that loads language data\n * or an external configuration, and provide that function to the `APP_INITIALIZER` token.\n * The function is executed during the application bootstrap process,\n * and the needed data is available on startup.\n *\n * @see `ApplicationInitStatus`\n *\n * @usageNotes\n *\n * The following example illustrates how to configure a multi-provider using `APP_INITIALIZER` token\n * and a function returning a promise.\n *\n * ```\n *  function initializeApp(): Promise<any> {\n *    return new Promise((resolve, reject) => {\n *      // Do some asynchronous stuff\n *      resolve();\n *    });\n *  }\n *\n *  @NgModule({\n *   imports: [BrowserModule],\n *   declarations: [AppComponent],\n *   bootstrap: [AppComponent],\n *   providers: [{\n *     provide: APP_INITIALIZER,\n *     useFactory: () => initializeApp,\n *     multi: true\n *    }]\n *   })\n *  export class AppModule {}\n * ```\n *\n * It's also possible to configure a multi-provider using `APP_INITIALIZER` token and a function\n * returning an observable, see an example below. Note: the `HttpClient` in this example is used for\n * demo purposes to illustrate how the factory function can work with other providers available\n * through DI.\n *\n * ```\n *  function initializeAppFactory(httpClient: HttpClient): () => Observable<any> {\n *   return () => httpClient.get(\"https://someUrl.com/api/user\")\n *     .pipe(\n *        tap(user => { ... })\n *     );\n *  }\n *\n *  @NgModule({\n *    imports: [BrowserModule, HttpClientModule],\n *    declarations: [AppComponent],\n *    bootstrap: [AppComponent],\n *    providers: [{\n *      provide: APP_INITIALIZER,\n *      useFactory: initializeAppFactory,\n *      deps: [HttpClient],\n *      multi: true\n *    }]\n *  })\n *  export class AppModule {}\n * ```\n *\n * @publicApi\n */\nexport const APP_INITIALIZER =\n    new InjectionToken<ReadonlyArray<() => Observable<unknown>| Promise<unknown>| void>>(\n        'Application Initializer');\n\n/**\n * A class that reflects the state of running {@link APP_INITIALIZER} functions.\n *\n * @publicApi\n */\n@Injectable({providedIn: 'root'})\nexport class ApplicationInitStatus {\n  private resolve = noop;\n  private reject = noop;\n  private initialized = false;\n  public readonly donePromise: Promise<any>;\n  public readonly done = false;\n\n  constructor(@Inject(APP_INITIALIZER) @Optional() private readonly appInits:\n                  ReadonlyArray<() => Observable<unknown>| Promise<unknown>| void>) {\n    this.donePromise = new Promise((res, rej) => {\n      this.resolve = res;\n      this.reject = rej;\n    });\n  }\n\n  /** @internal */\n  runInitializers() {\n    if (this.initialized) {\n      return;\n    }\n\n    const asyncInitPromises: Promise<any>[] = [];\n\n    const complete = () => {\n      (this as {done: boolean}).done = true;\n      this.resolve();\n    };\n\n    if (this.appInits) {\n      for (let i = 0; i < this.appInits.length; i++) {\n        const initResult = this.appInits[i]();\n        if (isPromise(initResult)) {\n          asyncInitPromises.push(initResult);\n        } else if (isObservable(initResult)) {\n          const observableAsPromise = new Promise<void>((resolve, reject) => {\n            initResult.subscribe({complete: resolve, error: reject});\n          });\n          asyncInitPromises.push(observableAsPromise);\n        }\n      }\n    }\n\n    Promise.all(asyncInitPromises)\n        .then(() => {\n          complete();\n        })\n        .catch(e => {\n          this.reject(e);\n        });\n\n    if (asyncInitPromises.length === 0) {\n      complete();\n    }\n    this.initialized = true;\n  }\n}\n"]}