Login API in moodle angular 8

I need to login my user from my website to the moodle page.I have build function that create user and make enroll to course,Now i need to make auto login. I have set the "moodle_mobile_app" that have return my token of the user ,but i can find any service that make the login. I have all at my side `UserName,Password,Token` i just need some web service from moodle that can receive this data and return login Url "/login/token.php?username=YOUR_FORM_USERNAME&password=YOUR_FORM_PASSWORD&service=moodle_mobile_app" Do any one know the trick/way how can i make user be logged-in to mooble from my website?