Pebble: cache installed pbw files on sdcard if force untested option is set

This will be needed for FW 3.x on demand installations.

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/FwAppInstallerActivity.java

@@ -98,6 +98,7 @@ public class FwAppInstallerActivity extends Activity implements InstallActivity
         installButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
+                installHandler.onStartInstall();
                 Intent startIntent = new Intent(FwAppInstallerActivity.this, DeviceCommunicationService.class);
                 startIntent.setAction(DeviceCommunicationService.ACTION_INSTALL);
                 startIntent.putExtra("uri", uri);

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/InstallActivity.java

@@ -1,6 +1,6 @@
 package nodomain.freeyourgadget.gadgetbridge.activities;
 
 public interface InstallActivity {
-    public void setInfoText(String text);
-    public void setInstallEnabled(boolean enable);
+    void setInfoText(String text);
+    void setInstallEnabled(boolean enable);
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/InstallHandler.java

@@ -26,4 +26,9 @@ public interface InstallHandler {
      * @param device the device to which the element shall be installed
      */
     void validateInstallation(InstallActivity installActivity, GBDevice device);
+
+    /**
+     * Allows device specivic code to be execute just before the installation starts
+     */
+    void onStartInstall();
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/miband/MiBandFWInstallHandler.java

@@ -52,6 +52,11 @@ public class MiBandFWInstallHandler implements InstallHandler {
         installActivity.setInstallEnabled(true);
     }
 
+    @Override
+    public void onStartInstall() {
+
+    }
+
     public boolean isValid() {
         return helper != null;
     }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWInstallHandler.java

@@ -1,14 +1,21 @@
 package nodomain.freeyourgadget.gadgetbridge.devices.pebble;
 
 import android.content.Context;
+import android.content.SharedPreferences;
 import android.net.Uri;
+import android.preference.PreferenceManager;
 
+import java.io.File;
+import java.io.IOException;
+
+import nodomain.freeyourgadget.gadgetbridge.GBApplication;
 import nodomain.freeyourgadget.gadgetbridge.R;
 import nodomain.freeyourgadget.gadgetbridge.activities.InstallActivity;
 import nodomain.freeyourgadget.gadgetbridge.devices.InstallHandler;
 import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
 import nodomain.freeyourgadget.gadgetbridge.impl.GBDeviceApp;
 import nodomain.freeyourgadget.gadgetbridge.model.DeviceType;
+import nodomain.freeyourgadget.gadgetbridge.util.FileUtils;
 
 public class PBWInstallHandler implements InstallHandler {
 
@@ -51,7 +58,30 @@ public class PBWInstallHandler implements InstallHandler {
         }
     }
 
+    @Override
+    public void onStartInstall() {
+        if (mPBWReader.isFirmware()) {
+            return;
+        }
+
+        SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(GBApplication.getContext());
+        if (!sharedPrefs.getBoolean("pebble_force_untested", false)) {
+            return;
+        }
+
+        GBDeviceApp app = mPBWReader.getGBDeviceApp();
+        File pbwFile = new File(mPBWReader.getUri().getPath());
+        try {
+            File destDir = new File(FileUtils.getExternalFilesDir() + "/pbw-cache");
+            destDir.mkdirs();
+            FileUtils.copyFile(pbwFile, new File(destDir + "/" + app.getUUID().toString() + ".pbw"));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
     public boolean isValid() {
         return mPBWReader.isValid();
     }
+
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWReader.java

@@ -200,4 +200,8 @@ public class PBWReader {
     public String getHWRevision() {
         return hwRevision;
     }
+
+    public Uri getUri() {
+        return uri;
+    }
 }