Android: Implement save overwrite confirmation

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/MainPresenter.java

@@ -18,11 +18,14 @@ import org.dolphinemu.dolphinemu.features.settings.ui.MenuTag;
 import org.dolphinemu.dolphinemu.model.GameFileCache;
 import org.dolphinemu.dolphinemu.services.GameFileCacheService;
 import org.dolphinemu.dolphinemu.utils.AfterDirectoryInitializationRunner;
+import org.dolphinemu.dolphinemu.utils.BooleanSupplier;
 import org.dolphinemu.dolphinemu.utils.ContentHandler;
 import org.dolphinemu.dolphinemu.utils.FileBrowserHelper;
 import org.dolphinemu.dolphinemu.utils.WiiUtils;
 
 import java.util.Arrays;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
 import java.util.function.Supplier;
 
 public final class MainPresenter
@@ -168,9 +171,41 @@ public final class MainPresenter
 
   public void importWiiSave(String path)
   {
+    if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.N)
+      return;  // TODO
+
+    final Activity mainPresenterActivity = (Activity) mContext;
+
+    CompletableFuture<Boolean> canOverwriteFuture = new CompletableFuture<>();
+
     runOnThreadAndShowResult(R.string.import_in_progress, () ->
     {
-      int result = WiiUtils.importWiiSave(path);
+      BooleanSupplier canOverwrite = () ->
+      {
+        mainPresenterActivity.runOnUiThread(() ->
+        {
+          AlertDialog.Builder builder =
+                  new AlertDialog.Builder(mContext, R.style.DolphinDialogBase);
+          builder.setMessage(R.string.wii_save_exists);
+          builder.setCancelable(false);
+          builder.setPositiveButton(R.string.yes, (dialog, i) -> canOverwriteFuture.complete(true));
+          builder.setNegativeButton(R.string.no, (dialog, i) -> canOverwriteFuture.complete(false));
+          builder.show();
+        });
+
+        try
+        {
+          return canOverwriteFuture.get();
+        }
+        catch (ExecutionException | InterruptedException e)
+        {
+          // Shouldn't happen
+          throw new RuntimeException(e);
+        }
+      };
+
+      int result = WiiUtils.importWiiSave(path, canOverwrite);
+
       int message;
       switch (result)
       {

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/utils/BooleanSupplier.java

@@ -0,0 +1,6 @@
+package org.dolphinemu.dolphinemu.utils;
+
+public interface BooleanSupplier
+{
+  boolean get();
+}

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/utils/WiiUtils.java

@@ -10,5 +10,5 @@ public final class WiiUtils
 
   public static native boolean installWAD(String file);
 
-  public static native int importWiiSave(String file);
+  public static native int importWiiSave(String file, BooleanSupplier canOverwrite);
 }

Source/Android/app/src/main/res/values/strings.xml

@@ -333,6 +333,7 @@
     <string name="import_in_progress">Importing...</string>
     <string name="wad_install_success">Successfully installed this title to the NAND.</string>
     <string name="wad_install_failure">Failed to install this title to the NAND.</string>
+    <string name="wii_save_exists">Save data for this title already exists in the NAND. Consider backing up the current data before overwriting.\nOverwrite now?</string>
     <string name="wii_save_import_success">Successfully imported save file.</string>
     <string name="wii_save_import_error">Failed to import save file. Your NAND may be corrupt, or something is preventing access to files within it.</string>
     <string name="wii_save_import_corruped_source">Failed to import save file. The given file appears to be corrupted or is not a valid Wii save.</string>

Source/Android/jni/AndroidCommon/IDCache.cpp

@@ -56,6 +56,9 @@ static jmethodID s_network_helper_get_network_ip_address;
 static jmethodID s_network_helper_get_network_prefix_length;
 static jmethodID s_network_helper_get_network_gateway;
 
+static jclass s_boolean_supplier_class;
+static jmethodID s_boolean_supplier_get;
+
 namespace IDCache
 {
 JNIEnv* GetEnvForThread()
@@ -261,6 +264,11 @@ jmethodID GetNetworkHelperGetNetworkGateway()
   return s_network_helper_get_network_gateway;
 }
 
+jmethodID GetBooleanSupplierGet()
+{
+  return s_boolean_supplier_get;
+}
+
 }  // namespace IDCache
 
 #ifdef __cplusplus
@@ -361,6 +369,11 @@ jint JNI_OnLoad(JavaVM* vm, void* reserved)
   s_network_helper_get_network_gateway =
       env->GetStaticMethodID(s_network_helper_class, "GetNetworkGateway", "()I");
 
+  const jclass boolean_supplier_class =
+      env->FindClass("org/dolphinemu/dolphinemu/utils/BooleanSupplier");
+  s_boolean_supplier_class = reinterpret_cast<jclass>(env->NewGlobalRef(boolean_supplier_class));
+  s_boolean_supplier_get = env->GetMethodID(s_boolean_supplier_class, "get", "()Z");
+
   return JNI_VERSION;
 }
 

Source/Android/jni/AndroidCommon/IDCache.h

@@ -56,4 +56,6 @@ jmethodID GetNetworkHelperGetNetworkIpAddress();
 jmethodID GetNetworkHelperGetNetworkPrefixLength();
 jmethodID GetNetworkHelperGetNetworkGateway();
 
+jmethodID GetBooleanSupplierGet();
+
 }  // namespace IDCache

Source/Android/jni/WiiUtils.cpp

@@ -7,6 +7,7 @@
 #include <jni.h>
 
 #include "jni/AndroidCommon/AndroidCommon.h"
+#include "jni/AndroidCommon/IDCache.h"
 
 #include "Core/HW/WiiSave.h"
 #include "Core/WiiUtils.h"
@@ -44,12 +45,14 @@ JNIEXPORT jboolean JNICALL Java_org_dolphinemu_dolphinemu_utils_WiiUtils_install
   return static_cast<jboolean>(WiiUtils::InstallWAD(path));
 }
 
-JNIEXPORT jint JNICALL Java_org_dolphinemu_dolphinemu_utils_WiiUtils_importWiiSave(JNIEnv* env,
-                                                                                   jclass,
-                                                                                   jstring jFile)
+JNIEXPORT jint JNICALL Java_org_dolphinemu_dolphinemu_utils_WiiUtils_importWiiSave(
+    JNIEnv* env, jclass, jstring jFile, jobject jCanOverwrite)
 {
   const std::string path = GetJString(env, jFile);
-  const auto can_overwrite = [] { return true; };  // TODO
+  const auto can_overwrite = [&] {
+    const jmethodID get = IDCache::GetBooleanSupplierGet();
+    return static_cast<bool>(env->CallBooleanMethod(jCanOverwrite, get));
+  };
 
   return ConvertCopyResult(WiiSave::Import(path, can_overwrite));
 }