mirror of https://github.com/TeamNewPipe/NewPipe
719 lines
23 KiB
Java
719 lines
23 KiB
Java
package us.shandian.giga.service;
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import android.content.Context;
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import android.os.Handler;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.support.v7.util.DiffUtil;
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import android.util.Log;
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import android.widget.Toast;
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import org.schabi.newpipe.R;
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import java.io.File;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Iterator;
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import us.shandian.giga.get.DownloadMission;
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import us.shandian.giga.get.FinishedMission;
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import us.shandian.giga.get.Mission;
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import us.shandian.giga.get.sqlite.FinishedMissionStore;
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import us.shandian.giga.io.StoredDirectoryHelper;
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import us.shandian.giga.io.StoredFileHelper;
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import us.shandian.giga.util.Utility;
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import static org.schabi.newpipe.BuildConfig.DEBUG;
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public class DownloadManager {
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private static final String TAG = DownloadManager.class.getSimpleName();
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enum NetworkState {Unavailable, Operating, MeteredOperating}
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public final static int SPECIAL_NOTHING = 0;
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public final static int SPECIAL_PENDING = 1;
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public final static int SPECIAL_FINISHED = 2;
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static final String TAG_AUDIO = "audio";
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static final String TAG_VIDEO = "video";
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private final FinishedMissionStore mFinishedMissionStore;
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private final ArrayList<DownloadMission> mMissionsPending = new ArrayList<>();
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private final ArrayList<FinishedMission> mMissionsFinished;
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private final Handler mHandler;
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private final File mPendingMissionsDir;
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private NetworkState mLastNetworkStatus = NetworkState.Unavailable;
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int mPrefMaxRetry;
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boolean mPrefMeteredDownloads;
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boolean mPrefQueueLimit;
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private boolean mSelfMissionsControl;
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StoredDirectoryHelper mMainStorageAudio;
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StoredDirectoryHelper mMainStorageVideo;
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/**
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* Create a new instance
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*
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* @param context Context for the data source for finished downloads
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* @param handler Thread required for Messaging
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*/
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DownloadManager(@NonNull Context context, Handler handler, StoredDirectoryHelper storageVideo, StoredDirectoryHelper storageAudio) {
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if (DEBUG) {
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Log.d(TAG, "new DownloadManager instance. 0x" + Integer.toHexString(this.hashCode()));
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}
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mFinishedMissionStore = new FinishedMissionStore(context);
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mHandler = handler;
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mMainStorageAudio = storageAudio;
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mMainStorageVideo = storageVideo;
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mMissionsFinished = loadFinishedMissions();
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mPendingMissionsDir = getPendingDir(context);
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if (!Utility.mkdir(mPendingMissionsDir, false)) {
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throw new RuntimeException("failed to create pending_downloads in data directory");
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}
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loadPendingMissions(context);
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}
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private static File getPendingDir(@NonNull Context context) {
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//File dir = new File(ContextCompat.getDataDir(context), "pending_downloads");
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File dir = context.getExternalFilesDir("pending_downloads");
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if (dir == null) {
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// One of the following paths are not accessible ¿unmounted internal memory?
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// /storage/emulated/0/Android/data/org.schabi.newpipe[.debug]/pending_downloads
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// /sdcard/Android/data/org.schabi.newpipe[.debug]/pending_downloads
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Log.w(TAG, "path to pending downloads are not accessible");
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}
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return dir;
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}
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/**
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* Loads finished missions from the data source
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*/
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private ArrayList<FinishedMission> loadFinishedMissions() {
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ArrayList<FinishedMission> finishedMissions = mFinishedMissionStore.loadFinishedMissions();
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// check if the files exists, otherwise, forget the download
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for (int i = finishedMissions.size() - 1; i >= 0; i--) {
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FinishedMission mission = finishedMissions.get(i);
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if (!mission.storage.existsAsFile()) {
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if (DEBUG) Log.d(TAG, "downloaded file removed: " + mission.storage.getName());
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mFinishedMissionStore.deleteMission(mission);
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finishedMissions.remove(i);
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}
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}
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return finishedMissions;
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}
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private void loadPendingMissions(Context ctx) {
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File[] subs = mPendingMissionsDir.listFiles();
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if (subs == null) {
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Log.e(TAG, "listFiles() returned null");
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return;
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}
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if (subs.length < 1) {
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return;
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}
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if (DEBUG) {
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Log.d(TAG, "Loading pending downloads from directory: " + mPendingMissionsDir.getAbsolutePath());
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}
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for (File sub : subs) {
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if (!sub.isFile()) continue;
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DownloadMission mis = Utility.readFromFile(sub);
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if (mis == null || mis.isFinished()) {
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//noinspection ResultOfMethodCallIgnored
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sub.delete();
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continue;
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}
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boolean exists;
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try {
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mis.storage = StoredFileHelper.deserialize(mis.storage, ctx);
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exists = !mis.storage.isInvalid() && mis.storage.existsAsFile();
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} catch (Exception ex) {
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Log.e(TAG, "Failed to load the file source of " + mis.storage.toString(), ex);
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mis.storage.invalidate();
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exists = false;
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}
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if (mis.isPsRunning()) {
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if (mis.psAlgorithm.worksOnSameFile) {
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// Incomplete post-processing results in a corrupted download file
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// because the selected algorithm works on the same file to save space.
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if (exists && !mis.storage.delete())
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Log.w(TAG, "Unable to delete incomplete download file: " + sub.getPath());
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exists = true;
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}
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mis.psState = 0;
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mis.errCode = DownloadMission.ERROR_POSTPROCESSING_STOPPED;
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mis.errObject = null;
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} else if (!exists) {
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tryRecover(mis);
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// the progress is lost, reset mission state
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if (mis.isInitialized())
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mis.resetState(true, true, DownloadMission.ERROR_PROGRESS_LOST);
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}
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if (mis.psAlgorithm != null)
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mis.psAlgorithm.cacheDir = pickAvailableCacheDir(ctx);
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mis.recovered = exists;
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mis.metadata = sub;
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mis.maxRetry = mPrefMaxRetry;
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mis.mHandler = mHandler;
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mMissionsPending.add(mis);
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}
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if (mMissionsPending.size() > 1)
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Collections.sort(mMissionsPending, (mission1, mission2) -> Long.compare(mission1.timestamp, mission2.timestamp));
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}
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/**
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* Start a new download mission
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*
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* @param mission the new download mission to add and run (if possible)
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*/
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void startMission(DownloadMission mission) {
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synchronized (this) {
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mission.timestamp = System.currentTimeMillis();
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mission.mHandler = mHandler;
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mission.maxRetry = mPrefMaxRetry;
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// create metadata file
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while (true) {
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mission.metadata = new File(mPendingMissionsDir, String.valueOf(mission.timestamp));
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if (!mission.metadata.isFile() && !mission.metadata.exists()) {
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try {
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if (!mission.metadata.createNewFile())
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throw new RuntimeException("Cant create download metadata file");
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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break;
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}
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mission.timestamp = System.currentTimeMillis();
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}
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mSelfMissionsControl = true;
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mMissionsPending.add(mission);
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// Before continue, save the metadata in case the internet connection is not available
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Utility.writeToFile(mission.metadata, mission);
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if (mission.storage == null) {
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// noting to do here
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mission.errCode = DownloadMission.ERROR_FILE_CREATION;
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if (mission.errObject != null)
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mission.errObject = new IOException("DownloadMission.storage == NULL");
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return;
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}
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boolean start = !mPrefQueueLimit || getRunningMissionsCount() < 1;
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if (canDownloadInCurrentNetwork() && start) {
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mHandler.sendEmptyMessage(DownloadManagerService.MESSAGE_PROGRESS);
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mission.start();
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}
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}
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}
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public void resumeMission(DownloadMission mission) {
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if (!mission.running) {
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mHandler.sendEmptyMessage(DownloadManagerService.MESSAGE_PROGRESS);
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mission.start();
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}
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}
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public void pauseMission(DownloadMission mission) {
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if (mission.running) {
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mission.setEnqueued(false);
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mission.pause();
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mHandler.sendEmptyMessage(DownloadManagerService.MESSAGE_PAUSED);
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}
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}
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public void deleteMission(Mission mission) {
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synchronized (this) {
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if (mission instanceof DownloadMission) {
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mMissionsPending.remove(mission);
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} else if (mission instanceof FinishedMission) {
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mMissionsFinished.remove(mission);
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mFinishedMissionStore.deleteMission(mission);
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}
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mHandler.sendEmptyMessage(DownloadManagerService.MESSAGE_DELETED);
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mission.delete();
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}
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}
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public void forgetMission(StoredFileHelper storage) {
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synchronized (this) {
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Mission mission = getAnyMission(storage);
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if (mission == null) return;
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if (mission instanceof DownloadMission) {
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mMissionsPending.remove(mission);
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} else if (mission instanceof FinishedMission) {
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mMissionsFinished.remove(mission);
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mFinishedMissionStore.deleteMission(mission);
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}
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mHandler.sendEmptyMessage(DownloadManagerService.MESSAGE_DELETED);
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mission.storage = null;
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mission.delete();
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}
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}
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public void tryRecover(DownloadMission mission) {
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StoredDirectoryHelper mainStorage = getMainStorage(mission.storage.getTag());
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if (!mission.storage.isInvalid() && mission.storage.create()) return;
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// using javaIO cannot recreate the file
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// using SAF in older devices (no tree available)
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//
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// force the user to pick again the save path
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mission.storage.invalidate();
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if (mainStorage == null) return;
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// if the user has changed the save path before this download, the original save path will be lost
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StoredFileHelper newStorage = mainStorage.createFile(mission.storage.getName(), mission.storage.getType());
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if (newStorage != null) mission.storage = newStorage;
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}
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/**
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* Get a pending mission by its path
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*
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* @param storage where the file possible is stored
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* @return the mission or null if no such mission exists
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*/
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@Nullable
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private DownloadMission getPendingMission(StoredFileHelper storage) {
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for (DownloadMission mission : mMissionsPending) {
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if (mission.storage.equals(storage)) {
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return mission;
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}
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}
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return null;
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}
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/**
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* Get a finished mission by its path
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*
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* @param storage where the file possible is stored
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* @return the mission index or -1 if no such mission exists
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*/
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private int getFinishedMissionIndex(StoredFileHelper storage) {
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for (int i = 0; i < mMissionsFinished.size(); i++) {
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if (mMissionsFinished.get(i).storage.equals(storage)) {
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return i;
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}
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}
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return -1;
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}
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private Mission getAnyMission(StoredFileHelper storage) {
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synchronized (this) {
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Mission mission = getPendingMission(storage);
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if (mission != null) return mission;
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int idx = getFinishedMissionIndex(storage);
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if (idx >= 0) return mMissionsFinished.get(idx);
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}
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return null;
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}
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int getRunningMissionsCount() {
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int count = 0;
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synchronized (this) {
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for (DownloadMission mission : mMissionsPending) {
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if (mission.running && !mission.isPsFailed() && !mission.isFinished())
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count++;
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}
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}
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return count;
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}
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public void pauseAllMissions(boolean force) {
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boolean flag = false;
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synchronized (this) {
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for (DownloadMission mission : mMissionsPending) {
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if (!mission.running || mission.isPsRunning() || mission.isFinished()) continue;
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if (force) mission.threads = null;// avoid waiting for threads
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mission.pause();
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flag = true;
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}
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}
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if (flag) mHandler.sendEmptyMessage(DownloadManagerService.MESSAGE_PAUSED);
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}
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public void startAllMissions() {
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boolean flag = false;
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synchronized (this) {
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for (DownloadMission mission : mMissionsPending) {
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if (mission.running || mission.isCorrupt()) continue;
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flag = true;
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mission.start();
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}
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}
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if (flag) mHandler.sendEmptyMessage(DownloadManagerService.MESSAGE_PROGRESS);
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}
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/**
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* Set a pending download as finished
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*
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* @param mission the desired mission
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*/
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void setFinished(DownloadMission mission) {
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synchronized (this) {
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mMissionsPending.remove(mission);
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mMissionsFinished.add(0, new FinishedMission(mission));
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mFinishedMissionStore.addFinishedMission(mission);
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}
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}
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/**
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* runs one or multiple missions in from queue if possible
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*
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* @return true if one or multiple missions are running, otherwise, false
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*/
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boolean runMissions() {
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synchronized (this) {
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if (mMissionsPending.size() < 1) return false;
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if (!canDownloadInCurrentNetwork()) return false;
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if (mPrefQueueLimit) {
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for (DownloadMission mission : mMissionsPending)
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if (!mission.isFinished() && mission.running) return true;
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}
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boolean flag = false;
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for (DownloadMission mission : mMissionsPending) {
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if (mission.running || !mission.enqueued || mission.isFinished() || mission.hasInvalidStorage())
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continue;
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resumeMission(mission);
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if (mPrefQueueLimit) return true;
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flag = true;
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}
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return flag;
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}
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}
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public MissionIterator getIterator() {
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mSelfMissionsControl = true;
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return new MissionIterator();
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}
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/**
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* Forget all finished downloads, but, doesn't delete any file
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*/
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public void forgetFinishedDownloads() {
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synchronized (this) {
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for (FinishedMission mission : mMissionsFinished) {
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mFinishedMissionStore.deleteMission(mission);
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}
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mMissionsFinished.clear();
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}
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}
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private boolean canDownloadInCurrentNetwork() {
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if (mLastNetworkStatus == NetworkState.Unavailable) return false;
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return !(mPrefMeteredDownloads && mLastNetworkStatus == NetworkState.MeteredOperating);
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}
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void handleConnectivityState(NetworkState currentStatus, boolean updateOnly) {
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if (currentStatus == mLastNetworkStatus) return;
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mLastNetworkStatus = currentStatus;
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if (currentStatus == NetworkState.Unavailable) return;
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if (!mSelfMissionsControl || updateOnly) {
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return;// don't touch anything without the user interaction
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}
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boolean isMetered = mPrefMeteredDownloads && mLastNetworkStatus == NetworkState.MeteredOperating;
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int running = 0;
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int paused = 0;
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synchronized (this) {
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for (DownloadMission mission : mMissionsPending) {
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if (mission.isCorrupt() || mission.isPsRunning()) continue;
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if (mission.running && isMetered) {
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paused++;
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mission.pause();
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} else if (!mission.running && !isMetered && mission.enqueued) {
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running++;
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mission.start();
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if (mPrefQueueLimit) break;
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}
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}
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}
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if (running > 0) {
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mHandler.sendEmptyMessage(DownloadManagerService.MESSAGE_PROGRESS);
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return;
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}
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if (paused > 0) mHandler.sendEmptyMessage(DownloadManagerService.MESSAGE_PAUSED);
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}
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void updateMaximumAttempts() {
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synchronized (this) {
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for (DownloadMission mission : mMissionsPending) mission.maxRetry = mPrefMaxRetry;
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}
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}
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/**
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* Fast check for pending downloads. If exists, the user will be notified
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* TODO: call this method in somewhere
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*
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* @param context the application context
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*/
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public static void notifyUserPendingDownloads(Context context) {
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int pending = getPendingDir(context).list().length;
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if (pending < 1) return;
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Toast.makeText(context, context.getString(
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R.string.msg_pending_downloads,
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String.valueOf(pending)
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), Toast.LENGTH_LONG).show();
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}
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public MissionState checkForExistingMission(StoredFileHelper storage) {
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synchronized (this) {
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DownloadMission pending = getPendingMission(storage);
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if (pending == null) {
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if (getFinishedMissionIndex(storage) >= 0) return MissionState.Finished;
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} else {
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if (pending.isFinished()) {
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return MissionState.Finished;// this never should happen (race-condition)
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} else {
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return pending.running ? MissionState.PendingRunning : MissionState.Pending;
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}
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}
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}
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return MissionState.None;
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}
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private static boolean isDirectoryAvailable(File directory) {
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return directory != null && directory.canWrite();
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}
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static File pickAvailableCacheDir(@NonNull Context ctx) {
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if (isDirectoryAvailable(ctx.getExternalCacheDir()))
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return ctx.getExternalCacheDir();
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else if (isDirectoryAvailable(ctx.getCacheDir()))
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return ctx.getCacheDir();
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// this never should happen
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return ctx.getDir("tmp", Context.MODE_PRIVATE);
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}
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@Nullable
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private StoredDirectoryHelper getMainStorage(@NonNull String tag) {
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if (tag.equals(TAG_AUDIO)) return mMainStorageAudio;
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if (tag.equals(TAG_VIDEO)) return mMainStorageVideo;
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Log.w(TAG, "Unknown download category, not [audio video]: " + String.valueOf(tag));
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return null;// this never should happen
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}
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public class MissionIterator extends DiffUtil.Callback {
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final Object FINISHED = new Object();
|
|
final Object PENDING = new Object();
|
|
|
|
ArrayList<Object> snapshot;
|
|
ArrayList<Object> current;
|
|
ArrayList<Mission> hidden;
|
|
|
|
boolean hasFinished = false;
|
|
|
|
private MissionIterator() {
|
|
hidden = new ArrayList<>(2);
|
|
current = null;
|
|
snapshot = getSpecialItems();
|
|
}
|
|
|
|
private ArrayList<Object> getSpecialItems() {
|
|
synchronized (DownloadManager.this) {
|
|
ArrayList<Mission> pending = new ArrayList<>(mMissionsPending);
|
|
ArrayList<Mission> finished = new ArrayList<>(mMissionsFinished);
|
|
ArrayList<Mission> remove = new ArrayList<>(hidden);
|
|
|
|
// hide missions (if required)
|
|
Iterator<Mission> iterator = remove.iterator();
|
|
while (iterator.hasNext()) {
|
|
Mission mission = iterator.next();
|
|
if (pending.remove(mission) || finished.remove(mission)) iterator.remove();
|
|
}
|
|
|
|
int fakeTotal = pending.size();
|
|
if (fakeTotal > 0) fakeTotal++;
|
|
|
|
fakeTotal += finished.size();
|
|
if (finished.size() > 0) fakeTotal++;
|
|
|
|
ArrayList<Object> list = new ArrayList<>(fakeTotal);
|
|
if (pending.size() > 0) {
|
|
list.add(PENDING);
|
|
list.addAll(pending);
|
|
}
|
|
if (finished.size() > 0) {
|
|
list.add(FINISHED);
|
|
list.addAll(finished);
|
|
}
|
|
|
|
hasFinished = finished.size() > 0;
|
|
|
|
return list;
|
|
}
|
|
}
|
|
|
|
public MissionItem getItem(int position) {
|
|
Object object = snapshot.get(position);
|
|
|
|
if (object == PENDING) return new MissionItem(SPECIAL_PENDING);
|
|
if (object == FINISHED) return new MissionItem(SPECIAL_FINISHED);
|
|
|
|
return new MissionItem(SPECIAL_NOTHING, (Mission) object);
|
|
}
|
|
|
|
public int getSpecialAtItem(int position) {
|
|
Object object = snapshot.get(position);
|
|
|
|
if (object == PENDING) return SPECIAL_PENDING;
|
|
if (object == FINISHED) return SPECIAL_FINISHED;
|
|
|
|
return SPECIAL_NOTHING;
|
|
}
|
|
|
|
|
|
public void start() {
|
|
current = getSpecialItems();
|
|
}
|
|
|
|
public void end() {
|
|
snapshot = current;
|
|
current = null;
|
|
}
|
|
|
|
public void hide(Mission mission) {
|
|
hidden.add(mission);
|
|
}
|
|
|
|
public void unHide(Mission mission) {
|
|
hidden.remove(mission);
|
|
}
|
|
|
|
public boolean hasFinishedMissions() {
|
|
return hasFinished;
|
|
}
|
|
|
|
/**
|
|
* Check if exists missions running and paused. Corrupted and hidden missions are not counted
|
|
*
|
|
* @return two-dimensional array contains the current missions state.
|
|
* 1° entry: true if has at least one mission running
|
|
* 2° entry: true if has at least one mission paused
|
|
*/
|
|
public boolean[] hasValidPendingMissions() {
|
|
boolean running = false;
|
|
boolean paused = false;
|
|
|
|
synchronized (DownloadManager.this) {
|
|
for (DownloadMission mission : mMissionsPending) {
|
|
if (hidden.contains(mission) || mission.isCorrupt())
|
|
continue;
|
|
|
|
if (mission.running)
|
|
paused = true;
|
|
else
|
|
running = true;
|
|
}
|
|
}
|
|
|
|
return new boolean[]{running, paused};
|
|
}
|
|
|
|
|
|
@Override
|
|
public int getOldListSize() {
|
|
return snapshot.size();
|
|
}
|
|
|
|
@Override
|
|
public int getNewListSize() {
|
|
return current.size();
|
|
}
|
|
|
|
@Override
|
|
public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
|
|
return snapshot.get(oldItemPosition) == current.get(newItemPosition);
|
|
}
|
|
|
|
@Override
|
|
public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {
|
|
Object x = snapshot.get(oldItemPosition);
|
|
Object y = current.get(newItemPosition);
|
|
|
|
if (x instanceof Mission && y instanceof Mission) {
|
|
return ((Mission) x).storage.equals(((Mission) y).storage);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public class MissionItem {
|
|
public int special;
|
|
public Mission mission;
|
|
|
|
MissionItem(int s, Mission m) {
|
|
special = s;
|
|
mission = m;
|
|
}
|
|
|
|
MissionItem(int s) {
|
|
this(s, null);
|
|
}
|
|
}
|
|
|
|
}
|