android-credential-manager/src/CredentialManager.ts

An expo module to access the new Android credential Manager. Supports username/password, Passkeys and Google Sign In. This module is built to use the suggested and latest way to sign in users through Google

import CredentialManagerModule from "./CredentialManagerModule";
import {
  GoogleLoginResponse,
  LoginResponse,
  PassKeyLoginResponse,
  UsernamePasswordLoginResponse,
} from "./LoginResponse.types";
import { LoginProvider, LoginProviderType } from "./loginProviders/types";
import {
  CreateResponse,
  UsernamePasswordCreateResponse,
} from "./CreateResponse.types";
import {
  createCredErrorHandler,
  loginErrorHandler,
} from "./errors/ErrorHandler";
import {
  GoogleButtonProvider,
  PassKeyCreator,
} from "./loginProviders/LoginProviders";

export class CredentialManager {
  static saveUsernameAndPassword(
    username: string,
    password: string,
  ): UsernamePasswordCreateResponse | null {
    const result = JSON.parse(
      CredentialManagerModule.saveUsernameAndPassword(username, password),
    ) as CreateResponse;
    if (result.name === "Error") {
      createCredErrorHandler(result);
    } else if (result.name === "UsernamePassword") {
      return result;
    } else {
      throw new Error("Invalid response");
    }
    return null;
  }

  static createPassKey(request: PassKeyCreator): PassKeyCreator | null {
    const result = JSON.parse(
      CredentialManagerModule.createPassKey(request.generateResponse()),
    ) as CreateResponse;
    if (result.name === "Error") {
      createCredErrorHandler(result);
    } else if (result.name === "PassKey") {
      return request;
    } else {
      throw new Error("Invalid response");
    }
    return null;
  }

  static login(loginProviders: LoginProvider[]) {
    const serializedLoginTypes = loginProviders.map((loginType) =>
      loginType.serialize(),
    );
    const result = JSON.parse(
      CredentialManagerModule._login(JSON.stringify(serializedLoginTypes)),
    ) as LoginResponse;
    switch (result.name) {
      case "Error":
        loginErrorHandler(result);
        break;
      case LoginProviderType.USERNAME_PASSWORD:
        return result as UsernamePasswordLoginResponse;
      case LoginProviderType.GOOGLE:
        return result as GoogleLoginResponse;
      case LoginProviderType.PASSKEY:
        return result as PassKeyLoginResponse;
    }
    return null;
  }

  static loginWithGoogle(
    provider: GoogleButtonProvider,
  ): GoogleLoginResponse | null {
    const providers = [provider].map((loginType) => loginType.serialize());
    const result = JSON.parse(
      CredentialManagerModule._login(JSON.stringify(providers)),
    ) as LoginResponse;
    switch (result.name) {
      case "Error":
        loginErrorHandler(result);
        break;
      case LoginProviderType.GOOGLE:
        return result as GoogleLoginResponse;
    }
    return null;
  }

  static prefetchCredentials(loginProviders: LoginProvider[]): void {
    const serializedLoginProviders = loginProviders.map((loginProvider) =>
      loginProvider.serialize(),
    );
    CredentialManagerModule.prefetchCredentials(
      JSON.stringify(serializedLoginProviders),
    );
  }
}