Added mojang account validation UI.

Other minor fixes included. Bumped version from dev to alpha. Testing to begin soon.

app/assets/js/scripts/uibinder.js

@@ -4,12 +4,54 @@
  */
 // Requirements
 const path          = require('path')
+const AuthManager   = require('./assets/js/authmanager.js')
 const {AssetGuard}  = require('./assets/js/assetguard.js')
 const ConfigManager = require('./assets/js/configmanager.js')
 
 let rscShouldLoad = false
 let fatalStartupError = false
 
+// Mapping of each view to their container IDs.
+const VIEWS = {
+    landing: 'landingContainer',
+    login: 'loginContainer',
+    welcome: 'welcomeContainer'
+}
+
+// The currently shown view container.
+let currentView = VIEWS.landing
+
+/**
+ * Switch launcher views.
+ * 
+ * @param {string} current The ID of the current view container. 
+ * @param {*} next The ID of the next view container.
+ * @param {*} currentFadeTime Optional. The fade out time for the current view.
+ * @param {*} nextFadeTime Optional. The fade in time for the next view.
+ * @param {*} onCurrentFade Optional. Callback function to execute when the current
+ * view fades out.
+ * @param {*} onNextFade Optional. Callback function to execute when the next view
+ * fades in.
+ */
+function switchView(current, next, currentFadeTime = 500, nextFadeTime = 500, onCurrentFade = () => {}, onNextFade = () => {}){
+    currentView = current
+    $(`#${current}`).fadeOut(currentFadeTime, () => {
+        onCurrentFade()
+        $(`#${next}`).fadeIn(nextFadeTime, () => {
+            onNextFade()
+        })
+    })
+}
+
+/**
+ * Get the currently shown view container.
+ * 
+ * @returns {string} The currently shown view container.
+ */
+function getCurrentView(){
+    return currentView
+}
+
 function showMainUI(){
     updateSelectedServer(AssetGuard.getServerById(ConfigManager.getSelectedServer()).name)
     refreshServerStatus()
@@ -18,6 +60,8 @@ function showMainUI(){
         document.body.style.backgroundImage = `url('assets/images/backgrounds/${document.body.getAttribute('bkid')}.jpg')`
         $('#main').show()
 
+        //validateSelectedAccount()
+
         if(ConfigManager.isFirstLaunch()){
             $('#welcomeContainer').fadeIn(1000)
         } else {
@@ -25,7 +69,7 @@ function showMainUI(){
         }
 
         setTimeout(() => {
-            $('#loadingContainer').fadeOut(750, () => {
+            $('#loadingContainer').fadeOut(500, () => {
                 $('#loadSpinnerImage').removeClass('rotating')
             })
         }, 500)
@@ -70,6 +114,59 @@ function refreshDistributionIndex(remote, onSuccess, onError){
     }
 }
 
+async function validateSelectedAccount(){
+    const selectedAcc = ConfigManager.getSelectedAccount()
+    if(selectedAcc != null){
+        const val = await AuthManager.validateSelected()
+        if(!val){
+            const accLen = Object.keys(ConfigManager.getAuthAccounts()).length
+            setOverlayContent(
+                'Failed to Refresh Login',
+                `We were unable to refresh the login for <strong>${selectedAcc.displayName}</strong>. Please ${accLen > 1 ? 'select another account or ' : ''} login again.`,
+                'Login',
+                'Select Another Account'
+            )
+            setOverlayHandler(() => {
+                document.getElementById('loginUsername').value = selectedAcc.username
+                validateEmail(selectedAcc.username)
+                switchView(getCurrentView(), VIEWS.login)
+                toggleOverlay(false)
+            })
+            setDismissHandler(() => {
+                if(accLen > 2){
+                    prepareAccountSelectionList()
+                    $('#overlayContent').fadeOut(250, () => {
+                        $('#accountSelectContent').fadeIn(250)
+                    })
+                } else {
+                    const accountsObj = ConfigManager.getAuthAccounts()
+                    const accounts = Array.from(Object.keys(accountsObj), v=>accountsObj[v]);
+                    const selectedUUID = ConfigManager.getSelectedAccount().uuid
+                    for(let i=0; i<accounts.length; i++){
+                        if(accounts[i].uuid !== selectedUUID){
+                            setSelectedAccount(accounts[i].uuid)
+                            toggleOverlay(false)
+                            validateSelectedAccount()
+                        }
+                    }
+                }
+            })
+            toggleOverlay(true, accLen > 1)
+        } else {
+            return true
+        }
+    } else {
+        return true
+    }
+}
+
+function setSelectedAccount(uuid){
+    const authAcc = ConfigManager.setSelectedAccount(uuid)
+    ConfigManager.save()
+    updateSelectedAccount(authAcc)
+    //validateSelectedAccount()
+}
+
 // Synchronous Listener
 document.addEventListener('readystatechange', function(){