Merge pull request #4118 from kiwix/Fixes#4113

Fixed: Impossible to download full Wikipedia in English.

app/src/main/java/org/kiwix/kiwixmobile/nav/destination/reader/KiwixReaderFragment.kt

@@ -83,7 +83,7 @@ class KiwixReaderFragment : CoreReaderFragment() {
       )
     }
     activity.supportActionBar?.setDisplayHomeAsUpEnabled(true)
-    toolbar?.let(activity::setupDrawerToggle)
+    toolbar?.let { activity.setupDrawerToggle(it, true) }
     setFragmentContainerBottomMarginToSizeOfNavBar()
     openPageInBookFromNavigationArguments()
   }
@@ -167,7 +167,7 @@ class KiwixReaderFragment : CoreReaderFragment() {
   override fun hideTabSwitcher() {
     actionBar?.let { actionBar ->
       actionBar.setDisplayShowTitleEnabled(true)
-      toolbar?.let { activity?.setupDrawerToggle(it) }
+      toolbar?.let { activity?.setupDrawerToggle(it, true) }
 
       setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED)
 

app/src/main/java/org/kiwix/kiwixmobile/zimManager/ZimManageViewModel.kt

@@ -205,11 +205,15 @@ class ZimManageViewModel @Inject constructor(
       .callTimeout(CALL_TIMEOUT, SECONDS)
       .addNetworkInterceptor(UserAgentInterceptor(USER_AGENT))
       .build()
-    client.newCall(headRequest).execute().use { response ->
+    try {
-      if (response.isSuccessful) {
+      client.newCall(headRequest).execute().use { response ->
-        return@getContentLengthOfLibraryXmlFile response.header("content-length")?.toLongOrNull()
+        if (response.isSuccessful) {
-          ?: DEFAULT_INT_VALUE.toLong()
+          return@getContentLengthOfLibraryXmlFile response.header("content-length")?.toLongOrNull()
+            ?: DEFAULT_INT_VALUE.toLong()
+        }
       }
+    } catch (ignore: Exception) {
+      // do nothing
     }
     return DEFAULT_INT_VALUE.toLong()
   }

core/src/main/java/org/kiwix/kiwixmobile/core/downloader/downloadManager/DownloadManagerMonitor.kt

@@ -18,57 +18,85 @@
 
 package org.kiwix.kiwixmobile.core.downloader.downloadManager
 
-import android.annotation.SuppressLint
 import android.app.DownloadManager
 import android.content.Context
 import android.content.Intent
-import kotlinx.coroutines.CoroutineScope
+import io.reactivex.Observable
-import kotlinx.coroutines.Dispatchers
+import io.reactivex.disposables.Disposable
-import kotlinx.coroutines.launch
+import io.reactivex.schedulers.Schedulers
 import org.kiwix.kiwixmobile.core.dao.DownloadRoomDao
+import org.kiwix.kiwixmobile.core.dao.entities.DownloadRoomEntity
 import org.kiwix.kiwixmobile.core.downloader.DownloadMonitor
 import org.kiwix.kiwixmobile.core.downloader.downloadManager.DownloadNotificationManager.Companion.ACTION_CANCEL
 import org.kiwix.kiwixmobile.core.downloader.downloadManager.DownloadNotificationManager.Companion.ACTION_PAUSE
 import org.kiwix.kiwixmobile.core.downloader.downloadManager.DownloadNotificationManager.Companion.ACTION_QUERY_DOWNLOAD_STATUS
 import org.kiwix.kiwixmobile.core.downloader.downloadManager.DownloadNotificationManager.Companion.ACTION_RESUME
-import org.kiwix.kiwixmobile.core.extensions.registerReceiver
+import org.kiwix.kiwixmobile.core.extensions.isServiceRunning
-import org.kiwix.kiwixmobile.core.zim_manager.ConnectivityBroadcastReceiver
+import org.kiwix.kiwixmobile.core.utils.files.Log
+import java.util.concurrent.TimeUnit
 import javax.inject.Inject
 
 class DownloadManagerMonitor @Inject constructor(
   val downloadRoomDao: DownloadRoomDao,
-  private val context: Context,
+  private val context: Context
-  private val connectivityBroadcastReceiver: ConnectivityBroadcastReceiver
 ) : DownloadMonitor, DownloadManagerBroadcastReceiver.Callback {
   private val lock = Any()
+  private var monitoringDisposable: Disposable? = null
 
   init {
-    context.registerReceiver(connectivityBroadcastReceiver)
+    startMonitoringDownloads()
-    startServiceIfActiveDownloads()
-    trackNetworkState()
   }
 
-  @SuppressLint("CheckResult")
+  @Suppress("MagicNumber")
-  private fun trackNetworkState() {
+  fun startMonitoringDownloads() {
-    connectivityBroadcastReceiver.networkStates
+    if (monitoringDisposable?.isDisposed == false) return
-      .distinctUntilChanged()
+    monitoringDisposable = Observable.interval(ZERO.toLong(), 5, TimeUnit.SECONDS)
+      .subscribeOn(Schedulers.io())
+      .observeOn(Schedulers.io())
       .subscribe(
         {
-          // Start the service when the network changes so that we can
+          try {
-          // track the progress accurately.
+            synchronized(lock) {
-          startServiceIfActiveDownloads()
+              // Observe downloads when the application is in the foreground.
+              // This is especially useful when downloads are resumed but the
+              // Download Manager takes some time to update the download status.
+              // In such cases, the foreground service may stop prematurely due to
+              // a lack of active downloads during this update delay.
+              if (downloadRoomDao.downloads().blockingFirst().isNotEmpty()) {
+                // Check if there are active downloads and the service is not running.
+                // If so, start the DownloadMonitorService to properly track download progress.
+                if (shouldStartService()) {
+                  startService()
+                } else {
+                  // Do nothing; it is for fixing the error when "if" is used as an expression.
+                }
+              } else {
+                monitoringDisposable?.dispose()
+              }
+            }
+          } catch (ignore: Exception) {
+            Log.e(
+              "DOWNLOAD_MONITOR",
+              "Couldn't get the downloads update. Original exception = $ignore"
+            )
+          }
         },
         Throwable::printStackTrace
       )
   }
 
-  private fun startServiceIfActiveDownloads() {
+  /**
-    CoroutineScope(Dispatchers.IO).launch {
+   * Determines if the DownloadMonitorService should be started.
-      if (downloadRoomDao.downloads().blockingFirst().isNotEmpty()) {
+   * Checks if there are active downloads and if the service is not already running.
-        startService()
+   */
-      }
+  private fun shouldStartService(): Boolean =
+    getActiveDownloads().isNotEmpty() &&
+      !context.isServiceRunning(DownloadMonitorService::class.java)
+
+  private fun getActiveDownloads(): List<DownloadRoomEntity> =
+    downloadRoomDao.downloadRoomEntity().blockingFirst().filter {
+      it.status != Status.PAUSED && it.status != Status.CANCELLED
     }
-  }
 
   override fun downloadCompleteOrCancelled(intent: Intent) {
     synchronized(lock) {
@@ -86,24 +114,23 @@ class DownloadManagerMonitor @Inject constructor(
     }
   }
 
-  fun startMonitoringDownloads() {
-    startService()
-  }
-
   private fun startService() {
     context.startService(Intent(context, DownloadMonitorService::class.java))
   }
 
   fun pauseDownload(downloadId: Long) {
     context.startService(getDownloadMonitorIntent(ACTION_PAUSE, downloadId.toInt()))
+    startMonitoringDownloads()
   }
 
   fun resumeDownload(downloadId: Long) {
     context.startService(getDownloadMonitorIntent(ACTION_RESUME, downloadId.toInt()))
+    startMonitoringDownloads()
   }
 
   fun cancelDownload(downloadId: Long) {
     context.startService(getDownloadMonitorIntent(ACTION_CANCEL, downloadId.toInt()))
+    startMonitoringDownloads()
   }
 
   private fun getDownloadMonitorIntent(action: String, downloadId: Int): Intent =

core/src/main/java/org/kiwix/kiwixmobile/core/downloader/downloadManager/DownloadMonitorService.kt

@@ -188,8 +188,8 @@ class DownloadMonitorService : Service() {
     val status = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS))
     val reason = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_REASON))
     val bytesDownloaded =
-      cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR))
+      cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR))
-    val totalBytes = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES))
+    val totalBytes = cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES))
     val progress = calculateProgress(bytesDownloaded, totalBytes)
 
     val etaInMilliSeconds = calculateETA(downloadId, bytesDownloaded, totalBytes)
@@ -243,8 +243,8 @@ class DownloadMonitorService : Service() {
     reason: Int,
     progress: Int,
     etaInMilliSeconds: Long,
-    bytesDownloaded: Int,
+    bytesDownloaded: Long,
-    totalBytes: Int
+    totalBytes: Long
   ) {
     val error = mapDownloadError(reason)
     updateDownloadStatus(
@@ -261,8 +261,8 @@ class DownloadMonitorService : Service() {
   private fun handlePausedDownload(
     downloadId: Long,
     progress: Int,
-    bytesDownloaded: Int,
+    bytesDownloaded: Long,
-    totalSizeOfDownload: Int,
+    totalSizeOfDownload: Long,
     reason: Int
   ) {
     val pauseReason = mapDownloadPauseReason(reason)
@@ -288,8 +288,8 @@ class DownloadMonitorService : Service() {
     downloadId: Long,
     progress: Int,
     etaInMilliSeconds: Long,
-    bytesDownloaded: Int,
+    bytesDownloaded: Long,
-    totalSizeOfDownload: Int
+    totalSizeOfDownload: Long
   ) {
     updateDownloadStatus(
       downloadId,
@@ -317,14 +317,14 @@ class DownloadMonitorService : Service() {
     downloadInfoMap.remove(downloadId)
   }
 
-  private fun calculateProgress(bytesDownloaded: Int, totalBytes: Int): Int =
+  private fun calculateProgress(bytesDownloaded: Long, totalBytes: Long): Int =
     if (totalBytes > ZERO) {
       (bytesDownloaded / totalBytes.toDouble()).times(HUNDERED).toInt()
     } else {
       ZERO
     }
 
-  private fun calculateETA(downloadedFileId: Long, bytesDownloaded: Int, totalBytes: Int): Long {
+  private fun calculateETA(downloadedFileId: Long, bytesDownloaded: Long, totalBytes: Long): Long {
     val currentTime = System.currentTimeMillis()
     val downloadInfo = downloadInfoMap.getOrPut(downloadedFileId) {
       DownloadInfo(startTime = currentTime, initialBytesDownloaded = bytesDownloaded)
@@ -376,8 +376,8 @@ class DownloadMonitorService : Service() {
     error: Error,
     progress: Int = DEFAULT_INT_VALUE,
     etaInMilliSeconds: Long = DEFAULT_INT_VALUE.toLong(),
-    bytesDownloaded: Int = DEFAULT_INT_VALUE,
+    bytesDownloaded: Long = DEFAULT_INT_VALUE.toLong(),
-    totalSizeOfDownload: Int = DEFAULT_INT_VALUE
+    totalSizeOfDownload: Long = DEFAULT_INT_VALUE.toLong()
   ) {
     synchronized(lock) {
       updater.onNext {
@@ -392,11 +392,11 @@ class DownloadMonitorService : Service() {
                 this.progress = progress
               }
               this.etaInMilliSeconds = etaInMilliSeconds
-              if (bytesDownloaded != DEFAULT_INT_VALUE) {
+              if (bytesDownloaded != DEFAULT_INT_VALUE.toLong()) {
-                this.bytesDownloaded = bytesDownloaded.toLong()
+                this.bytesDownloaded = bytesDownloaded
               }
-              if (totalSizeOfDownload != DEFAULT_INT_VALUE) {
+              if (totalSizeOfDownload != DEFAULT_INT_VALUE.toLong()) {
-                this.totalSizeOfDownload = totalSizeOfDownload.toLong()
+                this.totalSizeOfDownload = totalSizeOfDownload
               }
             }
             downloadRoomDao.update(downloadModel)
@@ -614,7 +614,7 @@ class DownloadMonitorService : Service() {
 
 data class DownloadInfo(
   var startTime: Long,
-  var initialBytesDownloaded: Int
+  var initialBytesDownloaded: Long
 )
 
 interface AssignNewForegroundServiceNotification {

core/src/main/java/org/kiwix/kiwixmobile/core/extensions/ActivityExtensions.kt

@@ -100,8 +100,8 @@ object ActivityExtensions {
   val Activity.cachedComponent: CoreActivityComponent
     get() = coreMainActivity.cachedComponent
 
-  fun Activity.setupDrawerToggle(toolbar: Toolbar) =
+  fun Activity.setupDrawerToggle(toolbar: Toolbar, shouldEnableRightDrawer: Boolean = false) =
-    coreMainActivity.setupDrawerToggle(toolbar)
+    coreMainActivity.setupDrawerToggle(toolbar, shouldEnableRightDrawer)
 
   fun Activity.navigate(fragmentId: Int) {
     coreMainActivity.navigate(fragmentId)

core/src/main/java/org/kiwix/kiwixmobile/core/extensions/ContextExtensions.kt

@@ -18,6 +18,8 @@
 
 package org.kiwix.kiwixmobile.core.extensions
 
+import android.app.ActivityManager
+import android.app.Service
 import android.content.Context
 import android.content.Context.RECEIVER_NOT_EXPORTED
 import android.content.Intent
@@ -113,3 +115,11 @@ fun Context.getBitmapFromDrawable(drawable: Drawable): Bitmap {
 
   return bitmap
 }
+
+@Suppress("Deprecation")
+fun Context.isServiceRunning(serviceClass: Class<out Service>): Boolean {
+  val activityManager = getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager
+  val services = activityManager.getRunningServices(Int.MAX_VALUE)
+
+  return services.any { it.service.className == serviceClass.name && it.foreground }
+}

core/src/main/java/org/kiwix/kiwixmobile/core/main/CoreMainActivity.kt

@@ -220,7 +220,7 @@ abstract class CoreMainActivity : BaseActivity(), WebViewProvider {
   override fun onSupportNavigateUp(): Boolean =
     navController.navigateUp() || super.onSupportNavigateUp()
 
-  open fun setupDrawerToggle(toolbar: Toolbar) {
+  open fun setupDrawerToggle(toolbar: Toolbar, shouldEnableRightDrawer: Boolean = false) {
     // Set the initial contentDescription to the hamburger icon.
     // This method is called from various locations after modifying the navigationIcon.
     // For example, we previously changed this icon/contentDescription to the "+" button
@@ -241,8 +241,10 @@ abstract class CoreMainActivity : BaseActivity(), WebViewProvider {
       it.syncState()
     }
     drawerContainerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED)
-    // Enable the right drawer
+    if (shouldEnableRightDrawer) {
-    drawerContainerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED, GravityCompat.END)
+      // Enable the right drawer
+      drawerContainerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED, GravityCompat.END)
+    }
   }
 
   open fun disableDrawer() {

core/src/main/java/org/kiwix/kiwixmobile/core/main/CoreReaderFragment.kt

@@ -893,7 +893,9 @@ abstract class CoreReaderFragment :
    * to verify proper functionality.
    */
   open fun setUpDrawerToggle(toolbar: Toolbar) {
-    toolbar.let((requireActivity() as CoreMainActivity)::setupDrawerToggle)
+    toolbar.let {
+      (requireActivity() as CoreMainActivity).setupDrawerToggle(it, true)
+    }
   }
 
   /**

custom/src/main/java/org/kiwix/kiwixmobile/custom/main/CustomMainActivity.kt

@@ -98,8 +98,8 @@ class CustomMainActivity : CoreMainActivity() {
     }
   }
 
-  override fun setupDrawerToggle(toolbar: Toolbar) {
+  override fun setupDrawerToggle(toolbar: Toolbar, shouldEnableRightDrawer: Boolean) {
-    super.setupDrawerToggle(toolbar)
+    super.setupDrawerToggle(toolbar, shouldEnableRightDrawer)
     activityCustomMainBinding.drawerNavView.apply {
       /**
        * Hide the 'ZimHostFragment' option from the navigation menu