Google Calendar API integration doesn't work because URI Redirect is http

[Javihache]

I tried enabling the Google Calendar API integration using the instructions provided by cal.com for self-hosted users. However I am unable to make it work. Only http:// URI Redirect addresses work, but using ghttp only makes google deactivate the API endpoints.

From what I've been reading online regarding similar problems, the way to make this work is change something in the code and make the URI redirects appear to originate from https, but I have no idea how to do this, as my installation is behind an nginx reverse proxy.

Has anyone been successful in integrating Google Calendar from their self-hosted application and can give me a hand?

Best regards!

[dosubot[bot]]

Hey @Javihache, I'm here to help you with any bugs, questions, or contributions. Let's tackle this issue together!

To resolve the issue with Google Calendar API integration where the URI redirects need to appear to originate from HTTPS, you should ensure that the redirect_uri is set to use https. This is particularly important when your application is behind an nginx reverse proxy.

Here's how you can modify the code:

1. Set the WEBAPP_URL_FOR_OAUTH to an HTTPS URL: Ensure that the WEBAPP_URL_FOR_OAUTH constant is set to an HTTPS URL in your configuration or environment variables. For example:

   export const WEBAPP_URL_FOR_OAUTH = "https://yourdomain.com";

   This constant is used to construct the redirect_uri:

   const redirect_uri = `${WEBAPP_URL_FOR_OAUTH}/api/integrations/googlecalendar/callback`;

2. Configure nginx to handle HTTPS: Make sure your nginx configuration is set up to handle HTTPS and forward the appropriate headers to your application to maintain the HTTPS scheme in redirects.

By ensuring that the WEBAPP_URL_FOR_OAUTH is set to an HTTPS URL and configuring nginx correctly, you should be able to resolve the issue with the Google Calendar API integration ^[1].

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Written by @dosu, approved by dosu-customer-success