LibraryInstaller now autodetects if a library is being replaced

It's no more required to pass this information from outside,
just library that is being installed is now sufficient.

Author: cmaglie

app/src/cc/arduino/contributions/libraries/ui/LibraryManagerUI.java

@@ -85,7 +85,7 @@ protected void onInstall(ContributedLibrary selectedLibrary, Optional<Contribute
         if (mayInstalledLibrary.isPresent() && selectedLibrary.isIDEBuiltIn()) {
           onRemovePressed(mayInstalledLibrary.get());
         } else {
-          onInstallPressed(selectedLibrary, mayInstalledLibrary);
+          onInstallPressed(selectedLibrary);
         }
       }
 
@@ -213,12 +213,12 @@ protected void onUpdatePressed() {
     installerThread.start();
   }
 
-  public void onInstallPressed(final ContributedLibrary lib, final Optional<ContributedLibrary> mayReplaced) {
+  public void onInstallPressed(final ContributedLibrary lib) {
     clearErrorMessage();
     installerThread = new Thread(() -> {
       try {
         setProgressVisible(true, tr("Installing..."));
-        installer.install(lib, mayReplaced, this::setProgress);
+        installer.install(lib, this::setProgress);
         // TODO: Do a better job in refreshing only the needed element
         if (contribTable.getCellEditor() != null) {
           contribTable.getCellEditor().stopCellEditing();

app/src/processing/app/Base.java

@@ -384,7 +384,7 @@ public Base(String[] args) throws Exception {
                       library, mayInstalled.get().getParsedVersion())));
           libraryInstaller.remove(mayInstalled.get(), progressListener);
         } else {
-          libraryInstaller.install(selected, mayInstalled, progressListener);
+          libraryInstaller.install(selected, progressListener);
         }
       }
 

arduino-core/src/cc/arduino/contributions/libraries/LibraryInstaller.java

@@ -43,6 +43,8 @@
 import java.io.File;
 import java.io.IOException;
 import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Optional;
 
 import static processing.app.I18n.tr;
@@ -86,22 +88,35 @@ public synchronized void updateIndex(ProgressListener progressListener) throws E
     rescanLibraryIndex(progress, progressListener);
   }
 
-  public synchronized void install(ContributedLibrary lib, Optional<ContributedLibrary> mayReplacedLib, ProgressListener progressListener) throws Exception {
+  public synchronized void install(ContributedLibrary lib, ProgressListener progressListener) throws Exception {
     final MultiStepProgress progress = new MultiStepProgress(4);
 
     // Do install library (3 steps)
-    performInstall(lib, mayReplacedLib, progressListener, progress);
+    performInstall(lib, progressListener, progress);
 
     // Rescan index (1 step)
     rescanLibraryIndex(progress, progressListener);
   }
 
-  private void performInstall(ContributedLibrary lib, Optional<ContributedLibrary> mayReplacedLib, ProgressListener progressListener, MultiStepProgress progress) throws Exception {
+  private void performInstall(ContributedLibrary lib, ProgressListener progressListener, MultiStepProgress progress) throws Exception {
     if (lib.isLibraryInstalled()) {
       System.out.println(I18n.format(tr("Library is already installed: {0}:{1}"), lib.getName(), lib.getParsedVersion()));
       return;
     }
 
+    File libsFolder = BaseNoGui.getSketchbookLibrariesFolder().folder;
+    File destFolder = new File(libsFolder, lib.getName().replaceAll(" ", "_"));
+
+    // Check if we are replacing an already installed lib
+    LibrariesIndex index = BaseNoGui.librariesIndexer.getIndex();
+    Optional<ContributedLibrary> replacedLib = index.find(lib.getName()).stream() //
+        .filter(l -> l.getInstalledLibrary().isPresent()) //
+        .filter(l -> l.getInstalledLibrary().get().getInstalledFolder().equals(destFolder)) //
+        .findAny();
+    if (!replacedLib.isPresent() && destFolder.exists()) {
+      System.out.println(I18n.format(tr("Library {0} is already installed in: {1}"), lib.getName(), destFolder));
+      return;
+    }
     DownloadableContributionsDownloader downloader = new DownloadableContributionsDownloader(BaseNoGui.librariesIndexer.getStagingFolder());
 
     // Step 1: Download library
@@ -120,7 +135,6 @@ private void performInstall(ContributedLibrary lib, Optional<ContributedLibrary>
     // Step 2: Unpack library on the correct location
     progress.setStatus(I18n.format(tr("Installing library: {0}:{1}"), lib.getName(), lib.getParsedVersion()));
     progressListener.onProgress(progress);
-    File libsFolder = BaseNoGui.getSketchbookLibrariesFolder().folder;
     File tmpFolder = FileUtils.createTempFolder(libsFolder);
     try {
       new ArchiveExtractor(platform).extract(lib.getDownloadedFile(), tmpFolder, 1);
@@ -132,10 +146,9 @@ private void performInstall(ContributedLibrary lib, Optional<ContributedLibrary>
 
     // Step 3: Remove replaced library and move installed one to the correct location
     // TODO: Fix progress bar...
-    if (mayReplacedLib.isPresent()) {
-      remove(mayReplacedLib.get(), progressListener);
+    if (replacedLib.isPresent()) {
+      remove(replacedLib.get(), progressListener);
     }
-    File destFolder = new File(libsFolder, lib.getName().replaceAll(" ", "_"));
     tmpFolder.renameTo(destFolder);
     progress.stepDone();
   }