501 lines
14 KiB
Java
501 lines
14 KiB
Java
package org.fox.ttrss.offline;
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import java.lang.reflect.Type;
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import java.util.HashMap;
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import java.util.List;
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import org.fox.ttrss.ApiRequest;
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import org.fox.ttrss.OnlineActivity;
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import org.fox.ttrss.R;
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import org.fox.ttrss.types.Article;
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import org.fox.ttrss.types.Feed;
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import org.fox.ttrss.types.FeedCategory;
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import org.fox.ttrss.util.DatabaseHelper;
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import org.fox.ttrss.util.ImageCacheService;
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import org.jsoup.Jsoup;
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import org.jsoup.nodes.Document;
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import org.jsoup.nodes.Element;
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import org.jsoup.select.Elements;
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import android.app.ActivityManager;
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import android.app.ActivityManager.RunningServiceInfo;
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import android.app.Notification;
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import android.app.NotificationManager;
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import android.app.PendingIntent;
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import android.app.Service;
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import android.content.Context;
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import android.content.Intent;
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import android.content.SharedPreferences;
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import android.database.sqlite.SQLiteDatabase;
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import android.database.sqlite.SQLiteStatement;
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import android.os.Binder;
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import android.os.IBinder;
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import android.preference.PreferenceManager;
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import android.provider.BaseColumns;
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import android.util.Log;
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import com.google.gson.Gson;
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import com.google.gson.JsonElement;
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import com.google.gson.reflect.TypeToken;
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public class OfflineDownloadService extends Service {
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private final String TAG = this.getClass().getSimpleName();
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public static final int NOTIFY_DOWNLOADING = 1;
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public static final String INTENT_ACTION_SUCCESS = "org.fox.ttrss.intent.action.DownloadComplete";
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public static final String INTENT_ACTION_CANCEL = "org.fox.ttrss.intent.action.Cancel";
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private static final int OFFLINE_SYNC_SEQ = 50;
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private static final int OFFLINE_SYNC_MAX = OFFLINE_SYNC_SEQ * 10;
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private SQLiteDatabase m_writableDb;
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private SQLiteDatabase m_readableDb;
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private int m_articleOffset = 0;
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private String m_sessionId;
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private NotificationManager m_nmgr;
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private boolean m_batchMode = false;
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private boolean m_downloadInProgress = false;
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private boolean m_downloadImages = false;
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private int m_syncMax;
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private SharedPreferences m_prefs;
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private boolean m_canProceed = true;
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private final IBinder m_binder = new LocalBinder();
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public class LocalBinder extends Binder {
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OfflineDownloadService getService() {
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return OfflineDownloadService.this;
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}
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}
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@Override
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public IBinder onBind(Intent intent) {
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return m_binder;
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}
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@Override
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public void onCreate() {
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super.onCreate();
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m_nmgr = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
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m_prefs = PreferenceManager
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.getDefaultSharedPreferences(getApplicationContext());
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m_downloadImages = m_prefs.getBoolean("offline_image_cache_enabled", false);
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m_syncMax = Integer.parseInt(m_prefs.getString("offline_sync_max", String.valueOf(OFFLINE_SYNC_MAX)));
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initDatabase();
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}
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@SuppressWarnings("deprecation")
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private void updateNotification(String msg) {
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Notification notification = new Notification(R.drawable.icon,
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getString(R.string.notify_downloading_title), System.currentTimeMillis());
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Intent intent = new Intent(this, OnlineActivity.class);
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intent.setAction(INTENT_ACTION_CANCEL);
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PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
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intent, 0);
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notification.flags |= Notification.FLAG_ONGOING_EVENT;
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notification.flags |= Notification.FLAG_ONLY_ALERT_ONCE;
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notification.setLatestEventInfo(this, getString(R.string.notify_downloading_title), msg, contentIntent);
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m_nmgr.notify(NOTIFY_DOWNLOADING, notification);
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}
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private void updateNotification(int msgResId) {
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updateNotification(getString(msgResId));
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}
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private void downloadFailed() {
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m_readableDb.close();
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m_writableDb.close();
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m_nmgr.cancel(NOTIFY_DOWNLOADING);
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// TODO send notification to activity?
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m_downloadInProgress = false;
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stopSelf();
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}
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private boolean isCacheServiceRunning() {
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ActivityManager manager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
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for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
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if ("org.fox.ttrss.util.ImageCacheService".equals(service.service.getClassName())) {
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return true;
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}
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}
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return false;
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}
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public void downloadComplete() {
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m_downloadInProgress = false;
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// if cache service is running, it will send a finished intent on its own
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if (!isCacheServiceRunning()) {
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m_nmgr.cancel(NOTIFY_DOWNLOADING);
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if (m_batchMode) {
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SharedPreferences localPrefs = getSharedPreferences("localprefs", Context.MODE_PRIVATE);
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SharedPreferences.Editor editor = localPrefs.edit();
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editor.putBoolean("offline_mode_active", true);
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editor.commit();
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} else {
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Intent intent = new Intent();
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intent.setAction(INTENT_ACTION_SUCCESS);
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intent.addCategory(Intent.CATEGORY_DEFAULT);
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sendBroadcast(intent);
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}
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} else {
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updateNotification(getString(R.string.notify_downloading_images, 0));
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}
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m_readableDb.close();
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m_writableDb.close();
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stopSelf();
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}
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private void initDatabase() {
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DatabaseHelper dh = new DatabaseHelper(getApplicationContext());
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m_writableDb = dh.getWritableDatabase();
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m_readableDb = dh.getReadableDatabase();
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}
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/* private synchronized SQLiteDatabase getReadableDb() {
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return m_readableDb;
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} */
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private synchronized SQLiteDatabase getWritableDb() {
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return m_writableDb;
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}
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@SuppressWarnings("unchecked")
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private void downloadArticles() {
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Log.d(TAG, "offline: downloading articles... offset=" + m_articleOffset);
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updateNotification(getString(R.string.notify_downloading_articles, m_articleOffset));
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OfflineArticlesRequest req = new OfflineArticlesRequest(this);
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@SuppressWarnings("serial")
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HashMap<String,String> map = new HashMap<String,String>() {
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{
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put("op", "getHeadlines");
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put("sid", m_sessionId);
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put("feed_id", "-4");
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put("view_mode", "unread");
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put("show_content", "true");
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put("skip", String.valueOf(m_articleOffset));
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put("limit", String.valueOf(OFFLINE_SYNC_SEQ));
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}
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};
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req.execute(map);
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}
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private void downloadFeeds() {
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updateNotification(R.string.notify_downloading_feeds);
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getWritableDb().execSQL("DELETE FROM feeds;");
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ApiRequest req = new ApiRequest(getApplicationContext()) {
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@Override
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protected JsonElement doInBackground(HashMap<String, String>... params) {
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JsonElement content = super.doInBackground(params);
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if (content != null) {
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try {
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Type listType = new TypeToken<List<Feed>>() {}.getType();
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List<Feed> feeds = new Gson().fromJson(content, listType);
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SQLiteStatement stmtInsert = getWritableDb().compileStatement("INSERT INTO feeds " +
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"("+BaseColumns._ID+", title, feed_url, has_icon, cat_id) " +
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"VALUES (?, ?, ?, ?, ?);");
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for (Feed feed : feeds) {
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stmtInsert.bindLong(1, feed.id);
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stmtInsert.bindString(2, feed.title);
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stmtInsert.bindString(3, feed.feed_url);
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stmtInsert.bindLong(4, feed.has_icon ? 1 : 0);
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stmtInsert.bindLong(5, feed.cat_id);
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stmtInsert.execute();
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}
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stmtInsert.close();
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Log.d(TAG, "offline: done downloading feeds");
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m_articleOffset = 0;
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getWritableDb().execSQL("DELETE FROM articles;");
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} catch (Exception e) {
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e.printStackTrace();
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updateNotification(R.string.offline_switch_error);
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downloadFailed();
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}
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}
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return content;
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}
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@Override
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protected void onPostExecute(JsonElement content) {
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if (content != null) {
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if (m_canProceed) {
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downloadArticles();
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} else {
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downloadFailed();
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}
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} else {
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updateNotification(getErrorMessage());
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downloadFailed();
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}
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}
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};
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@SuppressWarnings("serial")
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HashMap<String,String> map = new HashMap<String,String>() {
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{
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put("op", "getFeeds");
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put("sid", m_sessionId);
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put("cat_id", "-3");
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put("unread_only", "true");
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}
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};
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req.execute(map);
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}
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private void downloadCategories() {
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updateNotification(R.string.notify_downloading_feeds);
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getWritableDb().execSQL("DELETE FROM categories;");
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ApiRequest req = new ApiRequest(getApplicationContext()) {
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protected JsonElement doInBackground(HashMap<String, String>... params) {
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JsonElement content = super.doInBackground(params);
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if (content != null) {
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try {
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Type listType = new TypeToken<List<FeedCategory>>() {}.getType();
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List<FeedCategory> cats = new Gson().fromJson(content, listType);
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SQLiteStatement stmtInsert = getWritableDb().compileStatement("INSERT INTO categories " +
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"("+BaseColumns._ID+", title) " +
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"VALUES (?, ?);");
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for (FeedCategory cat : cats) {
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stmtInsert.bindLong(1, cat.id);
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stmtInsert.bindString(2, cat.title);
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stmtInsert.execute();
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}
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stmtInsert.close();
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Log.d(TAG, "offline: done downloading categories");
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} catch (Exception e) {
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e.printStackTrace();
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updateNotification(R.string.offline_switch_error);
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downloadFailed();
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}
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}
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return content;
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}
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@Override
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protected void onPostExecute(JsonElement content) {
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if (content != null) {
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if (m_canProceed) {
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downloadFeeds();
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} else {
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downloadFailed();
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}
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} else {
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updateNotification(getErrorMessage());
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downloadFailed();
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}
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}
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};
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@SuppressWarnings("serial")
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HashMap<String,String> map = new HashMap<String,String>() {
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{
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put("op", "getCategories");
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put("sid", m_sessionId);
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//put("cat_id", "-3");
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put("unread_only", "true");
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}
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};
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req.execute(map);
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}
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@Override
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public void onDestroy() {
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super.onDestroy();
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m_nmgr.cancel(NOTIFY_DOWNLOADING);
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m_canProceed = false;
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Log.d(TAG, "onDestroy");
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//m_readableDb.close();
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//m_writableDb.close();
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}
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public class OfflineArticlesRequest extends ApiRequest {
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List<Article> m_articles;
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public OfflineArticlesRequest(Context context) {
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super(context);
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}
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@Override
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protected JsonElement doInBackground(HashMap<String, String>... params) {
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JsonElement content = super.doInBackground(params);
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if (content != null) {
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try {
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Type listType = new TypeToken<List<Article>>() {}.getType();
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m_articles = new Gson().fromJson(content, listType);
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SQLiteStatement stmtInsert = getWritableDb().compileStatement("INSERT INTO articles " +
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"("+BaseColumns._ID+", unread, marked, published, score, updated, is_updated, title, link, feed_id, tags, content, author) " +
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"VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);");
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for (Article article : m_articles) {
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String tagsString = "";
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for (String t : article.tags) {
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tagsString += t + ", ";
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}
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tagsString = tagsString.replaceAll(", $", "");
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int index = 1;
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stmtInsert.bindLong(index++, article.id);
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stmtInsert.bindLong(index++, article.unread ? 1 : 0);
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stmtInsert.bindLong(index++, article.marked ? 1 : 0);
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stmtInsert.bindLong(index++, article.published ? 1 : 0);
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stmtInsert.bindLong(index++, article.score);
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stmtInsert.bindLong(index++, article.updated);
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stmtInsert.bindLong(index++, article.is_updated ? 1 : 0);
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stmtInsert.bindString(index++, article.title);
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stmtInsert.bindString(index++, article.link);
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stmtInsert.bindLong(index++, article.feed_id);
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stmtInsert.bindString(index++, tagsString); // comma-separated tags
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stmtInsert.bindString(index++, article.content);
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stmtInsert.bindString(index++, article.author != null ? article.author : "");
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if (m_downloadImages) {
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Document doc = Jsoup.parse(article.content);
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if (doc != null) {
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Elements images = doc.select("img");
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for (Element img : images) {
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String url = img.attr("src");
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if (url.indexOf("://") != -1) {
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if (!ImageCacheService.isUrlCached(OfflineDownloadService.this, url)) {
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Intent intent = new Intent(OfflineDownloadService.this,
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ImageCacheService.class);
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intent.putExtra("url", url);
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startService(intent);
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}
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}
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}
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}
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}
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try {
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stmtInsert.execute();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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m_articleOffset += m_articles.size();
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Log.d(TAG, "offline: received " + m_articles.size() + " articles; canProc=" + m_canProceed);
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stmtInsert.close();
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} catch (Exception e) {
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updateNotification(R.string.offline_switch_error);
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Log.d(TAG, "offline: failed: exception when loading articles");
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e.printStackTrace();
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downloadFailed();
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}
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}
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return content;
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}
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@Override
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protected void onPostExecute(JsonElement content) {
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if (content != null) {
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if (m_canProceed && m_articles != null) {
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if (m_articles.size() == OFFLINE_SYNC_SEQ && m_articleOffset < m_syncMax) {
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downloadArticles();
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} else {
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downloadComplete();
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}
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} else {
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downloadFailed();
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}
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} else {
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Log.d(TAG, "offline: failed: " + getErrorMessage());
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updateNotification(getErrorMessage());
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downloadFailed();
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}
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}
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}
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@Override
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public void onStart(Intent intent, int startId) {
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try {
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if (getWritableDb().isDbLockedByCurrentThread() || getWritableDb().isDbLockedByOtherThreads()) {
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return;
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}
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m_sessionId = intent.getStringExtra("sessionId");
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m_batchMode = intent.getBooleanExtra("batchMode", false);
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if (!m_downloadInProgress) {
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if (m_downloadImages) ImageCacheService.cleanupCache(this, false);
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updateNotification(R.string.notify_downloading_init);
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m_downloadInProgress = true;
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downloadCategories();
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}
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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}
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