Sample method to do social media login authorization in popup window and get credentials from url

do-authorization.ts

doAuthorization(url: string, socialMediaProvider: string, isRegisterAction: boolean) {  
  /* isRegisterAction flag i am using to check if the process is for registration or Login */
  /* socialMediaProvider is for name of social media , it is optional*/       
  
  let loopCount = this.loopCount;   
  
  /* Create the window object by passing url and optional window title */  
  this.windowHandle = this.createOauthWindow(authorizationUrl, 'OAuth login');   
  
  /* Now start the timer for which the window will stay, and after time over window will be closed */  
  this.intervalId = window.setInterval(() => {              
     if (loopCount-- < 0) {      
         window.clearInterval(this.intervalId);      
         this.windowHandle.close();    
     } else {        
         let href: string;  
         // For referencing window url        
         try {          
            href = this.windowHandle.location.href; 
            
            // set window location to href string        
         } catch (e) {          
            // console.log('Error:', e); 
            // Handle any errors here        
         }        
         if (href != null) {                                
            // Method for getting query parameters from query string        
            const getQueryString = function(field: any, url: string) { 
            const windowLocationUrl = url ? url : href;          
            const reg = new RegExp('[?&]' + field + '=([^&#]*)', 'i');          
            const string = reg.exec(windowLocationUrl);          
            return string ? string[1] : null;        
         };           
         /* As i was getting code and oauth-token i added for same, you can replace with your expected variables */        
         if (href.match('code')) {          
            // for google , fb, github, linkedin          
            window.clearInterval(this.intervalId);          
            this.authorizationCode = getQueryString('code', href);         
            this.windowHandle.close();          
            if (isRegisterAction) {              
               /* call signup method */          
            } else {            
               /* call login method */          
            }        
         } else if (href.match('oauth_token')) {           
             // for twitter           
             window.clearInterval(this.intervalId);           
             this.oAuthToken = getQueryString('oauth_token', href);           
             this.oAuthVerifier = getQueryString('oauth_verifier', href);           
             this.windowHandle.close();           
             if (isRegisterAction) {              
               /* call signup */           
             } else {              
               /* call login */           
             }        
         }      
      }    
   }   
 }, this.intervalLength); 
}