[android] Make it possible to set a custom map download URL

Signed-off-by: NoelClick <dev@noel.click>

android/app/src/main/res/values/donottranslate.xml

@@ -43,6 +43,7 @@
   <string name="pref_backup" translatable="false">Backup</string>
   <string name="pref_left_button" translatable="false">LeftButton</string>
   <string name="pref_power" translatable="false">pref_power</string>
+  <string name="pref_custom_map_download_url" translatable="false">CustomMapDownloadUrl</string>
 
   <string name="notification_ticker_ltr" translatable="false">%1$s: %2$s</string>
   <string name="notification_ticker_rtl" translatable="false">%2$s :%1$s</string>

android/sdk/src/main/cpp/app/organicmaps/sdk/DownloadResourcesLegacyActivity.cpp

@@ -42,12 +42,16 @@ using namespace std::placeholders;
 
 namespace
 {
+  std::unique_ptr<MapFilesDownloader> & LegacyDownloader()
+  {
+    static auto downloader = storage::GetDownloader();
+    return downloader;
+  }
 
-static std::vector<platform::CountryFile> g_filesToDownload;
+  static std::vector<platform::CountryFile> g_filesToDownload;
-static int g_totalDownloadedBytes;
+  static int g_totalDownloadedBytes;
-static int g_totalBytesToDownload;
+  static int g_totalBytesToDownload;
-static std::shared_ptr<HttpRequest> g_currentRequest;
+  static std::shared_ptr<HttpRequest> g_currentRequest;
-
 }  // namespace
 
 extern "C"
@@ -152,11 +156,11 @@ JNIEXPORT jint JNICALL Java_app_organicmaps_sdk_DownloadResourcesLegacyActivity_
     return ERR_NO_MORE_FILES;
 
   /// @todo One downloader instance with cached servers. All this routine will be refactored some time.
-  static auto downloader = storage::GetDownloader();
+  auto & downloader = LegacyDownloader();
   storage::Storage const & storage = g_framework->GetStorage();
   downloader->SetDataVersion(storage.GetCurrentDataVersion());
 
-  downloader->EnsureMetaConfigReady([&storage, ptr = jni::make_global_ref(listener)]()
+  downloader->EnsureMetaConfigReady([&storage, ptr = jni::make_global_ref(listener), &downloader]()
   {
     auto const & curFile = g_filesToDownload.back();
     auto const fileName = curFile.GetFileName(MapFileType::Map);
@@ -177,4 +181,12 @@ JNIEXPORT void JNICALL Java_app_organicmaps_sdk_DownloadResourcesLegacyActivity_
   LOG(LDEBUG, ("cancelCurrentFile, currentRequest=", g_currentRequest));
   g_currentRequest.reset();
 }
+
+JNIEXPORT void JNICALL Java_app_organicmaps_sdk_DownloadResourcesLegacyActivity_nativeResetMetaConfig(JNIEnv *,
+                                                                                                      jclass)
+{
+  auto & downloader = LegacyDownloader();
+  if (downloader)
+    downloader->ResetMetaConfig();
+}
 }

android/sdk/src/main/java/app/organicmaps/sdk/DownloadResourcesLegacyActivity.java

@@ -27,4 +27,5 @@ public class DownloadResourcesLegacyActivity
   public static native int nativeGetBytesToDownload();
   public static native int nativeStartNextFileDownload(Listener listener);
   public static native void nativeCancelCurrentFile();
+  public static native void nativeResetMetaConfig();
 }

android/sdk/src/main/java/app/organicmaps/sdk/Framework.java

@@ -1,5 +1,6 @@
 package app.organicmaps.sdk;
 
+import android.content.Context;
 import android.graphics.Bitmap;
 import androidx.annotation.Keep;
 import androidx.annotation.NonNull;
@@ -348,4 +349,13 @@ public class Framework
 
   public static native void nativeMemoryWarning();
   public static native void nativeSaveRoute();
+  public static native void nativeSetCustomMapDownloadUrl(String url);
+
+  public static void applyCustomMapDownloadUrl(@NonNull Context context, @Nullable String url)
+  {
+    String trimmed = url != null ? url.trim() : "";
+    nativeSetCustomMapDownloadUrl(trimmed);
+    // Reset the legacy downloader too (world/coasts).
+    app.organicmaps.sdk.DownloadResourcesLegacyActivity.nativeResetMetaConfig();
+  }
 }

android/sdk/src/main/java/app/organicmaps/sdk/OrganicMaps.java

@@ -2,6 +2,8 @@ package app.organicmaps.sdk;
 
 import android.content.Context;
 import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
+
 import androidx.annotation.NonNull;
 import androidx.lifecycle.DefaultLifecycleObserver;
 import androidx.lifecycle.LifecycleOwner;
@@ -167,6 +169,11 @@ public final class OrganicMaps implements DefaultLifecycleObserver
                        /* isTablet */ false);
     Config.setStoragePath(writablePath);
 
+    // Use the same prefs as SettingsPrefsFragment
+    final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(mContext);
+    final String savedUrl = prefs.getString(mContext.getString(R.string.pref_custom_map_download_url), "");
+    Framework.nativeSetCustomMapDownloadUrl(savedUrl.trim());
+
     mPlatformInitialized = true;
     Logger.i(TAG, "Platform initialized");
   }

android/sdk/src/main/res/values/donottranslate.xml

@@ -3,4 +3,5 @@
   <string name="pref_file_name" translatable="false">OrganicMapsPrefs</string>
   <string name="pref_enable_logging" translatable="false">EnableLogging</string>
   <string name="pref_emulate_bad_external_storage" translatable="false">EmulateBadExternalStorage</string>
+  <string name="pref_custom_map_download_url" translatable="false">CustomMapDownloadUrl</string>
 </resources>