if (typeof Oidc == "undefined") {
  throw new Error("You are missing the `oidc-client-js` lib");
}


// Var declarations
var sib  = {};
sib.oidc = {};


// Setup User Manager
sib.oidc._setup = function(settings) {
  if (typeof sib.oidc._manager == "undefined") {
    sib.oidc._manager = new Oidc.UserManager(settings);
  }
}


// Retrieve User from sessionStorage, or fetch it
sib.oidc._getUser = function() {
  sib.oidc._manager.getUser()
    .then(function(user) {
      if (user == null) {
        sib.oidc._manager.signinRedirectCallback()
          .then()
          .catch(function(error) {
            sib.oidc._manager.signinRedirect({state: "dummy data"})
              .then()
              .catch(function(error) {
                console.log(error);
              });
          });
      }
      else {
        sib.oidc.user = user;
      }
    })
    .catch(function(error) {
      console.log(error);
    });
}


// Connect to OIDC provider
sib.oidc._connect = function(settings) {
  sib.oidc._setup(settings);
  sib.oidc._getUser();


  // When user loaded...
  sib.oidc._manager.events.addUserLoaded(function(user) {
    sib.oidc._getUser();
  });
}


// Entry point 
fetch("./oidc-client-config.json")
  .then(response => response.json())
  .then(settings => sib.oidc._connect(settings));