Execute Forge Installer locally

app/assets/js/processbuilder.js

@@ -836,6 +836,13 @@ class ProcessBuilder {
                         libs = {...libs, ...res}
                     }
                 }
+            } else if(type === Type.Forge){
+                // Forge installer generated libraries
+                const forgeLibs = []
+                for (const library of this.forgeData.libraries) {
+                    forgeLibs.push(path.join(ConfigManager.getCommonDirectory(), 'libraries', library.downloads.artifact.path))
+                }
+                libs = {...libs, ...forgeLibs}
             }
         }
 

app/assets/js/scripts/landing.js

@@ -5,6 +5,7 @@
 const cp                      = require('child_process')
 const crypto                  = require('crypto')
 const { URL }                 = require('url')
+const { join }                = require('path')
 const {
     MojangRestAPI,
     getServerStatus
@@ -552,6 +553,32 @@ async function dlAsync(login = true) {
         serv.rawServer.id
     )
 
+    // Install Forge
+    let wrapperPath
+    if(isDev) {
+        wrapperPath = join(process.cwd(), 'libraries', 'java', 'ForgeInstallerCLI.jar')
+    } else {
+        if(process.platform === 'darwin'){
+            wrapperPath = join(process.cwd(), 'Contents', 'Resources', 'libraries', 'java', 'ForgeInstallerCLI.jar')
+        } else {
+            wrapperPath = join(process.cwd(), 'resources', 'libraries', 'java', 'ForgeInstallerCLI.jar')
+        }
+    }
+
+    // Launch Forge Installer
+    loggerLaunchSuite.info('Installing Forge.')
+    setLaunchDetails('Installing Forge..')
+    setLaunchPercentage(0)
+    const jExe = ConfigManager.getJavaExecutable(ConfigManager.getSelectedServer())
+    await distributionIndexProcessor.installForge(jExe, wrapperPath, percent => {
+        setDownloadPercentage(percent)
+    })
+    setDownloadPercentage(100)
+
+    // Remove download bar.
+    remote.getCurrentWindow().setProgressBar(-1)
+
+    // After Forge installed, we can get the Forge version data.
     const forgeData = await distributionIndexProcessor.loadForgeVersionJson(serv)
     const versionData = await mojangIndexProcessor.getVersionJson()