Utilizing Angular 4 to Trigger a Firebase Cloud Function

I am currently utilizing Angular 4, Firebase Database, and Cloud Functions. I have a query: How can I trigger a Firebase Function upon clicking a button in my component?

Here's the scenario I'm aiming for: Triggering the sending of a test email using emailjs when a button is clicked.

Below is a snippet of my code:

functions/src/index.ts

import * as functions from 'firebase-functions';
const emailjs = require("emailjs/email");

export const sendMail = functions.https.onRequest((request, response) => {
  var email     = require("./path/to/emailjs/email");
  var server    = email.server.connect({
    user:    "username",
    password:"password",
    host:    "smtp.your-email.com",
    ssl:     true
  });

  // sending the message and receiving callback with error details or message sent details
  server.send({
    text:    "i hope this works",
    from:    "you <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="b3c6c0d6c1ddd2ded6f3cadcc6c19ed6ded2dadf9dd0dcde">[email protected]</a>>",
    to:      "someone <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="afdcc0c2cac0c1caefd6c0dadd82cac2cec6c381ccc0c2">[email protected]</a>>, another <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="e1808f8e95898493a1988e9493cc848c80888dcf828e8c">[email protected]</a>>",
    cc:      "else <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="6c09001f092c1503191e4109010d0500420f0301">[email protected]</a>>",
    subject: "testing emailjs"
  }, function(err, message) { console.log(err || message); });
})

My component

sendTestEmail() {
  // Within this function, I aim to call the "sendMail" function from Firebase to initiate the email sending process.
}

Now it comes down to this question: How do I properly invoke a Firebase Function from within my component?

Answer №1

To utilize an HTTP Cloud Function, you must trigger it by accessing a specific URL, as outlined in the documentation: https://firebase.google.com/docs/functions/http-events#invoke_an_http_function

Once an HTTP function is deployed, you can activate it using its unique URL. The URL comprises of:

- The region where your function is deployed
- Your Firebase project ID
- cloudfunctions.net
- The name of your function

In your scenario, the URL to invoke sendMail() would be:

https://us-central1-<your-project-id>.cloudfunctions.net/sendMail

To make this call, you should utilize the HttpClient service.


I recommend watching the following video created by the Firebase team that explains how HTTP Cloud Functions should be structured, specifically regarding sending responses to the caller:

https://www.youtube.com/watch?v=7IkUgCLr5oA

You may need to adjust your code slightly after watching the video.

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