const firebase_tools = require("firebase-tools");

exports.recursiveDelete = functions
  .runWith({
    timeoutSeconds: 540,
    memory: '2GB'
  })
  .https.onCall(async (data, context) => {
    // Only allow admin users to execute this function.
    if (!(context.auth?.uid)) {
      throw new functions.https.HttpsError(
        'permission-denied',
        'Must be an authorized user to initiate delete.'
      );
    }
    const path = data;

    console.log(
      `User ${context.auth.uid} has requested to delete path ${path}`
    );

    // Run a recursive delete on the given document or collection path.
    // The 'token' must be set in the functions config, and can be generated
    // at the command line by running 'firebase login:ci'.
    await firebase_tools.firestore
      .delete(path, {
        project: process.env.GCLOUD_PROJECT,
        recursive: true,
        yes: true,
        token: functions.config().fb.token
      });

    return {
      path: path 
    };
  });

       //削除したいDocumentのパス
        let documentRef: DocumentReference =  Firestore.firestore().collection("your collection name").document("your document ID").collection("your collection name").document("your document ID")


       //CloudFunction内の関数を呼び出すためしょり
        let deleteFn = functions.httpsCallable("recursiveDelete")
        deleteFn.call(documentRef.path){ (result, error) in
            if let error = error as NSError? {
                if error.domain == FunctionsErrorDomain {
                    let code = FunctionsErrorCode(rawValue: error.code)
                    let message = error.localizedDescription
                    let details = error.userInfo[FunctionsErrorDetailsKey]

                    print("User has requested to delete:\(documentRef.path) and failed with error; code:\(code), message:\(message),details:\(details)")
                }
                //Delete処理失敗

            }else{
                //Delete処理成功
                print("User has requested to delete \(documentRef.path) and succeeded")

            }
        }