initial commit

app/assets/js/preloader.js

@@ -0,0 +1,67 @@
+const {ipcRenderer}  = require('electron')
+const fs             = require('fs-extra')
+const os             = require('os')
+const path           = require('path')
+
+const ConfigManager  = require('./configmanager')
+const { DistroAPI }  = require('./distromanager')
+const LangLoader     = require('./langloader')
+const { LoggerUtil } = require('helios-core')
+// eslint-disable-next-line no-unused-vars
+const { HeliosDistribution } = require('helios-core/common')
+
+const logger = LoggerUtil.getLogger('Preloader')
+
+logger.info('Loading..')
+
+// Load ConfigManager
+ConfigManager.load()
+
+// Yuck!
+// TODO Fix this
+DistroAPI['commonDir'] = ConfigManager.getCommonDirectory()
+DistroAPI['instanceDir'] = ConfigManager.getInstanceDirectory()
+
+// Load Strings
+LangLoader.setupLanguage()
+
+/**
+ * 
+ * @param {HeliosDistribution} data 
+ */
+function onDistroLoad(data){
+    if(data != null){
+        
+        // Resolve the selected server if its value has yet to be set.
+        if(ConfigManager.getSelectedServer() == null || data.getServerById(ConfigManager.getSelectedServer()) == null){
+            logger.info('Determining default selected server..')
+            ConfigManager.setSelectedServer(data.getMainServer().rawServer.id)
+            ConfigManager.save()
+        }
+    }
+    ipcRenderer.send('distributionIndexDone', data != null)
+}
+
+// Ensure Distribution is downloaded and cached.
+DistroAPI.getDistribution()
+    .then(heliosDistro => {
+        logger.info('Loaded distribution index.')
+
+        onDistroLoad(heliosDistro)
+    })
+    .catch(err => {
+        logger.info('Failed to load an older version of the distribution index.')
+        logger.info('Application cannot run.')
+        logger.error(err)
+
+        onDistroLoad(null)
+    })
+
+// Clean up temp dir incase previous launches ended unexpectedly. 
+fs.remove(path.join(os.tmpdir(), ConfigManager.getTempNativeFolder()), (err) => {
+    if(err){
+        logger.warn('Error while cleaning natives directory', err)
+    } else {
+        logger.info('Cleaned natives directory.')
+    }
+})