Fix Java downloader bugs + Add a test button in JavaPage

Signed-off-by: timoreo <contact@timoreo.fr>

launcher/ui/pages/global/JavaPage.cpp

@@ -52,6 +52,9 @@
 #include <FileSystem.h>
 #include "Application.h"
 #include <sys.h>
+#include "SysInfo.h"
+#include "JavaDownloader.h"
+
 
 JavaPage::JavaPage(QWidget *parent) : QWidget(parent), ui(new Ui::JavaPage)
 {
@@ -177,6 +180,44 @@ void JavaPage::on_javaTestBtn_clicked()
     checker->run();
 }
 
+void JavaPage::on_javaDownloadBtn_clicked(){
+    QString sys = SysInfo::currentSystem();
+    if(sys == "osx"){
+        sys = "mac-os";
+    }
+    QString arch = SysInfo::useQTForArch();
+    QString version;
+    if(sys == "windows"){
+        if(arch == "x86_64"){
+            version = "windows-x64";
+        }else if(arch == "i386"){
+            version = "windows-x86";
+        }else{
+            //Unknown, maybe arm, appending arch for downloader
+            version = "windows-"+arch;
+        }
+    }else if(sys == "mac-os"){
+        if(arch == "arm64"){
+            version = "mac-os-arm64";
+        }else{
+            version = "mac-os";
+        }
+    }else if(sys == "linux"){
+        if(arch == "x86_64"){
+            version = "linux";
+        }else {
+            // will work for i386, and arm(64)
+            version = "linux-" + arch;
+        }
+    }else{
+        // ? ? ? ? ? unknown os, at least it won't have a java version on mojang or azul, display warning
+        QMessageBox::warning(this, tr("Unknown OS"), tr("The OS you are running is not supported by Mojang or Azul. Please install Java manually."));
+        return;
+    }
+    //TODO display a selection for java 8 or 18
+    JavaDownloader::downloadJava(false, version);
+}
+
 void JavaPage::checkerFinished()
 {
     checker.reset();

launcher/ui/pages/global/JavaPage.h

@@ -85,6 +85,7 @@ slots:
     void on_javaDetectBtn_clicked();
     void on_javaTestBtn_clicked();
     void on_javaBrowseBtn_clicked();
+    void on_javaDownloadBtn_clicked();
     void checkerFinished();
 
 private:

launcher/ui/pages/global/JavaPage.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>545</width>
-    <height>580</height>
+    <width>559</width>
+    <height>659</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -279,6 +279,13 @@
             </property>
            </widget>
           </item>
+          <item row="3" column="0">
+           <widget class="QPushButton" name="javaDownloadBtn">
+            <property name="text">
+             <string>Download Java</string>
+            </property>
+           </widget>
+          </item>
          </layout>
         </widget>
        </item>