Firestore 错误代码到人类可读的消息

Question

我需要一种方法来将 Firestore 在引发 async await 时给我的错误代码转换为人类可读的消息。暴露了哪些接口可以帮助我做到这一点？登录功能示例：

  async onSubmitLogin(e: any) {
    try {
      const user: UserCredential = await signInWithEmailAndPassword(this.auth, e.value["Email"], e.value["Password"]);
    } catch (error: any) {
      // show error popup to user
    }
  }

Answer 1

我在我的 firestore 类中创建了一个实用函数来执行此操作。错误代码现在终于暴露了，我从这个SO answer 找到的。文档：AuthErrorCodes。每个错误码我都没有看一遍，但是都可以这样处理。

// Firebase
import { AuthErrorCodes } from '@angular/fire/auth';

@Injectable({
  providedIn: "root",
})
export class FirebaseService {
  private debug: boolean = true;

  constructor() {}

  public getMessageFromCode(error: string): string | undefined {
    let msg: string | undefined = undefined;

    if (error) {
      // convert error to string in case it's not
      error = error.toString();

      // get firestore error code
      // e.x.: FirebaseError: Firebase: Error (auth/user-not-found).
      const idx: number = error.indexOf("Firebase: Error ("); // returns -1 when not found
      if (idx != -1) {
        const code: string = error.substring(idx + 17, error.indexOf(")", idx));
        if (this.debug) {
          console.debug(`getMessageFromCode >> code = ${code}`);
        }

        // convert code to a human readable message (some messages can be found here: <https://firebase.google.com/docs/auth/admin/errors?hl=en>)
        switch (code) {
          case AuthErrorCodes.INVALID_PASSWORD: {
            msg = "Incorrect password.";
            break;
          }
          case AuthErrorCodes.TOKEN_EXPIRED: {
            msg = "Your token has expired.  Please logout and re-login.";
            break;
          }
          case AuthErrorCodes.USER_CANCELLED: {
            msg = "Login process was stopped by you.";
            break;
          }
          case AuthErrorCodes.USER_DELETED: {
            msg = "This user does not exist.";
            break;
          }
          case AuthErrorCodes.USER_DISABLED: {
            msg = "Your account has been disabled.";
            break;
          }
          case AuthErrorCodes.USER_MISMATCH: {
            msg = "Credential given does not correspond to you.";
            break;
          }
          case AuthErrorCodes.USER_SIGNED_OUT: {
            msg = "You have been signed out.  Please re-sign in.";
            break;
          }
          case AuthErrorCodes.WEAK_PASSWORD: {
            msg = "Your password is too weak.  It must be at least six characters long.";
            break;
          }
          default:
            break;
        }

        // log
        if (this.debug) {
          console.debug(`getMessageFromCode >> msg = ${msg}`);
        }
      }
    }

    return msg;
  }

}