Logging in via HTTP POST request or other methods into Nextcloud web interface

Hello Nextcloud community,
I want to know if there is anyway that users can log in to Nextcloud web interface without entering their credential on the nextcloud login page. I want nextcloud web interface to extend my web application and i want a single login page. Is there any way to automate the login process like a http post request to the server and it redirects to the user dashboard? I will be really grateful if you could provide me with some solutions. Thank you.