Show downloads tab when notification is clicked on

app/src/main/AndroidManifest.xml

@@ -130,6 +130,7 @@
     </activity>
     <activity
       android:name=".zim_manager.ZimManageActivity"
+        android:launchMode="singleTop"
       android:label="@string/choose_file">
 
       <!-- TODO -->
@@ -192,6 +193,11 @@
         android:resource="@xml/provider_paths" />
     </provider>
 
+    <receiver android:name=".zim_manager.DownloadNotificationClickedReceiver">
+      <intent-filter>
+        <action android:name="android.intent.action.DOWNLOAD_NOTIFICATION_CLICKED"/>
+      </intent-filter>
+    </receiver>
   </application>
 
 </manifest>

app/src/main/java/org/kiwix/kiwixmobile/database/DownloadDao.java

@@ -20,14 +20,15 @@ package org.kiwix.kiwixmobile.database;
 import com.yahoo.squidb.data.SquidCursor;
 import com.yahoo.squidb.data.TableModel;
 import com.yahoo.squidb.sql.Query;
-import com.yahoo.squidb.sql.Table;
 import com.yahoo.squidb.sql.TableStatement;
 import io.reactivex.Flowable;
 import io.reactivex.processors.BehaviorProcessor;
 import java.io.File;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import javax.inject.Inject;
+import kotlin.collections.ArraysKt;
 import org.jetbrains.annotations.NotNull;
 import org.kiwix.kiwixmobile.database.entity.DownloadDatabaseEntity;
 import org.kiwix.kiwixmobile.downloader.model.DownloadModel;
@@ -60,6 +61,13 @@ public class DownloadDao extends BaseDao{
     ) == 0;
   }
 
+  public boolean containsAny(@NotNull Long[] downloadIds) {
+    return kiwixDatabase.count(
+        DownloadDatabaseEntity.class,
+        DownloadDatabaseEntity.DOWNLOAD_ID.in((Object[]) downloadIds)
+    ) > 0;
+  }
+
   public void delete(@NotNull Long... downloadIds) {
     if (downloadIds.length > 0) {
       kiwixDatabase.deleteWhere(DownloadDatabaseEntity.class,

app/src/main/java/org/kiwix/kiwixmobile/di/components/ApplicationComponent.java

@@ -27,10 +27,10 @@ import org.kiwix.kiwixmobile.di.modules.ApplicationModule;
 import org.kiwix.kiwixmobile.di.modules.JNIModule;
 import org.kiwix.kiwixmobile.di.modules.NetworkModule;
 import org.kiwix.kiwixmobile.downloader.DownloadService;
-import org.kiwix.kiwixmobile.zim_manager.library_view.adapter.LibraryAdapter;
 import org.kiwix.kiwixmobile.settings.KiwixSettingsActivity;
 import org.kiwix.kiwixmobile.views.AutoCompleteAdapter;
 import org.kiwix.kiwixmobile.views.web.KiwixWebView;
+import org.kiwix.kiwixmobile.zim_manager.DownloadNotificationClickedReceiver;
 
 @Singleton
 @Component(modules = {
@@ -61,4 +61,6 @@ public interface ApplicationComponent {
   void inject(KiwixSettingsActivity.PrefsFragment prefsFragment);
 
   void inject(AutoCompleteAdapter autoCompleteAdapter);
+
+  void inject(DownloadNotificationClickedReceiver downloadNotificationClickedReceiver);
 }

app/src/main/java/org/kiwix/kiwixmobile/zim_manager/DownloadNotificationClickedReceiver.kt

@@ -0,0 +1,50 @@
+/*
+ * Kiwix Android
+ * Copyright (C) 2018  Kiwix <android.kiwix.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.kiwix.kiwixmobile.zim_manager
+
+import android.app.DownloadManager
+import android.content.Context
+import android.content.Intent
+import org.kiwix.kiwixmobile.KiwixApplication
+import org.kiwix.kiwixmobile.database.DownloadDao
+import javax.inject.Inject
+
+class DownloadNotificationClickedReceiver : BaseBroadcastReceiver() {
+  override val action: String = DownloadManager.ACTION_NOTIFICATION_CLICKED
+
+  @Inject lateinit var downloadDao: DownloadDao
+
+  override fun onIntentWithActionReceived(
+    context: Context,
+    intent: Intent
+  ) {
+    KiwixApplication.getApplicationComponent()
+        .inject(this)
+    val longArray =
+      intent.extras?.getLongArray(DownloadManager.EXTRA_NOTIFICATION_CLICK_DOWNLOAD_IDS)
+          ?: longArrayOf()
+    if (downloadDao.containsAny(longArray.toTypedArray())) {
+      context.startActivity(
+          Intent(context, ZimManageActivity::class.java).apply {
+            addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+            putExtra(ZimManageActivity.TAB_EXTRA, 2)
+          }
+      )
+    }
+  }
+}

app/src/main/java/org/kiwix/kiwixmobile/zim_manager/ZimManageActivity.kt

@@ -84,12 +84,23 @@ class ZimManageActivity : BaseActivity() {
       adapter = mSectionsPagerAdapter
       offscreenPageLimit = 2
       tabs.setupWithViewPager(this)
-      currentItem = intent.getIntExtra(TAB_EXTRA, 0)
       addOnPageChangeListener(SimplePageChangeListener(this@ZimManageActivity::updateMenu))
     }
     zimManageViewModel.languageItems.observe(this, Observer {
       onLanguageItemsForDialogUpdated(it!!)
     })
+    setViewPagerPositionFromIntent(intent)
+  }
+
+  override fun onNewIntent(intent: Intent?) {
+    super.onNewIntent(intent)
+    setViewPagerPositionFromIntent(intent)
+  }
+
+  private fun setViewPagerPositionFromIntent(intent: Intent?) {
+    if (intent?.hasExtra(TAB_EXTRA) == true) {
+      manageViewPager.currentItem = intent.getIntExtra(TAB_EXTRA, 0)
+    }
   }
 
   private fun onLanguageItemsForDialogUpdated(languages: List<Language>) {
@@ -100,7 +111,7 @@ class ZimManageActivity : BaseActivity() {
           .apply {
             onOkClicked = {
               Flowable.fromCallable {
-                languagesDao.saveFilteredLanguages(it.sortedBy(Language::language))
+                languagesDao.saveFilteredLanguages(it)
               }
                   .subscribeOn(Schedulers.io())
                   .subscribe()