ng-recaptcha
Version:
Angular component for Google reCAPTCHA
106 lines • 14.7 kB
JavaScript
import { Inject, Injectable } from "@angular/core";
import { Subject } from "rxjs";
import { RECAPTCHA_V3_SITE_KEY } from "./tokens";
import * as i0 from "@angular/core";
import * as i1 from "./recaptcha-loader.service";
/**
* The main service for working with reCAPTCHA v3 APIs.
*
* Use the `execute` method for executing a single action, and
* `onExecute` observable for listening to all actions at once.
*/
export class ReCaptchaV3Service {
constructor(zone, recaptchaLoader, siteKey) {
this.recaptchaLoader = recaptchaLoader;
this.zone = zone;
this.siteKey = siteKey;
this.init();
}
get onExecute() {
if (!this.onExecuteSubject) {
this.onExecuteSubject = new Subject();
this.onExecuteObservable = this.onExecuteSubject.asObservable();
}
return this.onExecuteObservable;
}
get onExecuteError() {
if (!this.onExecuteErrorSubject) {
this.onExecuteErrorSubject = new Subject();
this.onExecuteErrorObservable = this.onExecuteErrorSubject.asObservable();
}
return this.onExecuteErrorObservable;
}
/**
* Executes the provided `action` with reCAPTCHA v3 API.
* Use the emitted token value for verification purposes on the backend.
*
* For more information about reCAPTCHA v3 actions and tokens refer to the official documentation at
* https://developers.google.com/recaptcha/docs/v3.
*
* @param {string} action the action to execute
* @returns {Observable<string>} an `Observable` that will emit the reCAPTCHA v3 string `token` value whenever ready.
* The returned `Observable` completes immediately after emitting a value.
*/
execute(action) {
const subject = new Subject();
if (!this.grecaptcha) {
if (!this.actionBacklog) {
this.actionBacklog = [];
}
this.actionBacklog.push([action, subject]);
}
else {
this.executeActionWithSubject(action, subject);
}
return subject.asObservable();
}
/** @internal */
executeActionWithSubject(action, subject) {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const onError = (error) => {
this.zone.run(() => {
subject.error(error);
if (this.onExecuteErrorSubject) {
// We don't know any better at this point, unfortunately, so have to resort to `any`
// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
this.onExecuteErrorSubject.next({ action, error });
}
});
};
this.zone.runOutsideAngular(() => {
try {
this.grecaptcha.execute(this.siteKey, { action }).then((token) => {
this.zone.run(() => {
subject.next(token);
subject.complete();
if (this.onExecuteSubject) {
this.onExecuteSubject.next({ action, token });
}
});
}, onError);
}
catch (e) {
onError(e);
}
});
}
/** @internal */
init() {
this.recaptchaLoader.ready.subscribe((value) => {
this.grecaptcha = value;
if (this.actionBacklog && this.actionBacklog.length > 0) {
this.actionBacklog.forEach(([action, subject]) => this.executeActionWithSubject(action, subject));
this.actionBacklog = undefined;
}
});
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.0.1", ngImport: i0, type: ReCaptchaV3Service, deps: [{ token: i0.NgZone }, { token: i1.RecaptchaLoaderService }, { token: RECAPTCHA_V3_SITE_KEY }], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "17.0.1", ngImport: i0, type: ReCaptchaV3Service }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.0.1", ngImport: i0, type: ReCaptchaV3Service, decorators: [{
type: Injectable
}], ctorParameters: () => [{ type: i0.NgZone }, { type: i1.RecaptchaLoaderService }, { type: undefined, decorators: [{
type: Inject,
args: [RECAPTCHA_V3_SITE_KEY]
}] }] });
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{ Inject, Injectable, NgZone } from \"@angular/core\";\nimport { Observable, Subject } from \"rxjs\";\n\nimport { RECAPTCHA_V3_SITE_KEY } from \"./tokens\";\nimport { RecaptchaLoaderService } from \"./recaptcha-loader.service\";\n\nexport interface OnExecuteData {\n  /**\n   * The name of the action that has been executed.\n   */\n  action: string;\n  /**\n   * The token that reCAPTCHA v3 provided when executing the action.\n   */\n  token: string;\n}\n\nexport interface OnExecuteErrorData {\n  /**\n   * The name of the action that has been executed.\n   */\n  action: string;\n  /**\n   * The error which was encountered\n   */\n  // eslint-disable-next-line @typescript-eslint/no-explicit-any\n  error: any;\n}\n\ntype ActionBacklogEntry = [string, Subject<string>];\n\n/**\n * The main service for working with reCAPTCHA v3 APIs.\n *\n * Use the `execute` method for executing a single action, and\n * `onExecute` observable for listening to all actions at once.\n */\n@Injectable()\nexport class ReCaptchaV3Service {\n  /** @internal */\n  private readonly siteKey: string;\n  /** @internal */\n  private readonly zone: NgZone;\n  /** @internal */\n  private actionBacklog: ActionBacklogEntry[] | undefined;\n  /** @internal */\n  private grecaptcha: ReCaptchaV2.ReCaptcha;\n\n  /** @internal */\n  private onExecuteSubject: Subject<OnExecuteData>;\n  /** @internal */\n  private onExecuteErrorSubject: Subject<OnExecuteErrorData>;\n  /** @internal */\n  private onExecuteObservable: Observable<OnExecuteData>;\n  /** @internal */\n  private onExecuteErrorObservable: Observable<OnExecuteErrorData>;\n\n  constructor(\n    zone: NgZone,\n    public recaptchaLoader: RecaptchaLoaderService,\n    @Inject(RECAPTCHA_V3_SITE_KEY) siteKey: string,\n  ) {\n    this.zone = zone;\n    this.siteKey = siteKey;\n\n    this.init();\n  }\n\n  public get onExecute(): Observable<OnExecuteData> {\n    if (!this.onExecuteSubject) {\n      this.onExecuteSubject = new Subject<OnExecuteData>();\n      this.onExecuteObservable = this.onExecuteSubject.asObservable();\n    }\n\n    return this.onExecuteObservable;\n  }\n\n  public get onExecuteError(): Observable<OnExecuteErrorData> {\n    if (!this.onExecuteErrorSubject) {\n      this.onExecuteErrorSubject = new Subject<OnExecuteErrorData>();\n      this.onExecuteErrorObservable = this.onExecuteErrorSubject.asObservable();\n    }\n\n    return this.onExecuteErrorObservable;\n  }\n\n  /**\n   * Executes the provided `action` with reCAPTCHA v3 API.\n   * Use the emitted token value for verification purposes on the backend.\n   *\n   * For more information about reCAPTCHA v3 actions and tokens refer to the official documentation at\n   * https://developers.google.com/recaptcha/docs/v3.\n   *\n   * @param {string} action the action to execute\n   * @returns {Observable<string>} an `Observable` that will emit the reCAPTCHA v3 string `token` value whenever ready.\n   * The returned `Observable` completes immediately after emitting a value.\n   */\n  public execute(action: string): Observable<string> {\n    const subject = new Subject<string>();\n    if (!this.grecaptcha) {\n      if (!this.actionBacklog) {\n        this.actionBacklog = [];\n      }\n\n      this.actionBacklog.push([action, subject]);\n    } else {\n      this.executeActionWithSubject(action, subject);\n    }\n\n    return subject.asObservable();\n  }\n\n  /** @internal */\n  private executeActionWithSubject(action: string, subject: Subject<string>): void {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    const onError = (error: any) => {\n      this.zone.run(() => {\n        subject.error(error);\n        if (this.onExecuteErrorSubject) {\n          // We don't know any better at this point, unfortunately, so have to resort to `any`\n          // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment\n          this.onExecuteErrorSubject.next({ action, error });\n        }\n      });\n    };\n\n    this.zone.runOutsideAngular(() => {\n      try {\n        this.grecaptcha.execute(this.siteKey, { action }).then((token: string) => {\n          this.zone.run(() => {\n            subject.next(token);\n            subject.complete();\n            if (this.onExecuteSubject) {\n              this.onExecuteSubject.next({ action, token });\n            }\n          });\n        }, onError);\n      } catch (e) {\n        onError(e);\n      }\n    });\n  }\n\n  /** @internal */\n  private init() {\n    this.recaptchaLoader.ready.subscribe((value) => {\n      this.grecaptcha = value;\n      if (this.actionBacklog && this.actionBacklog.length > 0) {\n        this.actionBacklog.forEach(([action, subject]) => this.executeActionWithSubject(action, subject));\n        this.actionBacklog = undefined;\n      }\n    });\n  }\n}\n"]}