indieauth client/server setup code

authorization.php

<?php

// Create a micropub client app — allows users to log in and authorize this app to make requests on their behalf to, 
// e.g. a micropub endpoint, authenticates requests based on remember-me cookie.                                     
// $dataToCookie and $dataFromCookie map between the array of information about the current user and the string value
// stored in the remember-me cookie                                                                                  
//                                                                                                                   
// Adds routes:                                                                                                      
// /login                                                                                                            
// /authorize                                                                                                        
// /logout                                                                                                           
//                                                                                                                   
// Adds ->before() handler which attaches data about the current user, which scopes they’ve granted this app (if any)
// their URL, access token and micropub endpoint to $request.                                                        
$app->mount('/', Authentication\client($app, $dataToCookie, $dataFromCookie));                                     
                                                                                                                     
// Create a micropub server app + token provider — creates token-providing and authorizing endpoints, allows users to
// authorize other apps to make requests to this one on their behalf, authenticates requests based on access tokens. 
// $dataToToken and $dataFromToken map the access token granted to+used by apps and a user+client id+granted scopes  
//                                                                                                                   
// Adds routes:                                                                                                      
// /token                                                                                                            
//                                                                                                                   
// Adds ->before() handler which attaches data about the current user, which app they’re using, what scopes they’re  
// granted on this server to $request.                                                                               
$app->mount('/', Authentication\server($app, $dataToToken, $dataFromToken));