From 9de67792c7b99eb36d4092e8c896b7254490152c Mon Sep 17 00:00:00 2001
From: Adrian Ulrich <adrian@blinkenlights.ch>
Date: Mon, 5 Oct 2015 21:27:59 +0200
Subject: [PATCH] automatic playlist creation support

---
 res/values/translatable.xml                   |  8 ++++++
 res/xml/preference_misc.xml                   | 12 +++++++++
 .../android/vanilla/PlaybackService.java      | 25 +++++++++++++++++--
 .../android/vanilla/PrefKeys.java             |  1 +
 4 files changed, 44 insertions(+), 2 deletions(-)

diff --git a/res/values/translatable.xml b/res/values/translatable.xml
index ec2fc91d..35180651 100644
--- a/res/values/translatable.xml
+++ b/res/values/translatable.xml
@@ -299,4 +299,12 @@ THE SOFTWARE.
 	<string name="filebrowser_start">Filebrowser home</string>
 	<string name="customize_filebrowser_start">Filebrowser starts at this directory</string>
 	<string name="select">Select</string>
+
+
+	<string name="autoplaylist_playcounts_title">Automatic playlist creation</string>
+	<string name="autoplaylist_playcounts_summary">Automatically create a</string>
+	<string name="autoplaylist_playcounts_fmt" formatted="false">%s \'Top %.0f\' playlist</string>
+	<string name="autoplaylist_playcounts_disabled">Do not create an automatic playlist</string>
+	<string name="autoplaylist_playcounts_name" formatted="false">Top %d</string>
+
 </resources>
diff --git a/res/xml/preference_misc.xml b/res/xml/preference_misc.xml
index 66b2a6ae..e2f09765 100644
--- a/res/xml/preference_misc.xml
+++ b/res/xml/preference_misc.xml
@@ -22,6 +22,7 @@ THE SOFTWARE.
 -->
 <PreferenceScreen
 	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:vanilla="http://schemas.android.com/apk/res/ch.blinkenlights.android.vanilla"
 	android:persistent="true">
 	<CheckBoxPreference
 		android:key="disable_lockscreen"
@@ -43,6 +44,17 @@ THE SOFTWARE.
 		android:title="@string/double_tap_title"
 		android:summary="@string/double_tap_summary"
 		android:defaultValue="false" />
+	<ch.blinkenlights.android.vanilla.SeekBarPreference
+		android:key="playcounts_autoplaylist"
+		android:negativeButtonText="@null"
+		android:dialogLayout="@layout/seekbar_pref"
+		android:title="@string/autoplaylist_playcounts_title"
+		android:defaultValue="0"
+		vanilla:sbpMaxValue="100"
+		vanilla:sbpSteps="25"
+		vanilla:sbpSummaryText="@string/autoplaylist_playcounts_summary"
+		vanilla:sbpSummaryFormat="@string/autoplaylist_playcounts_fmt"
+		vanilla:sbpSummaryZeroText="@string/autoplaylist_playcounts_disabled"/>
 	<CheckBoxPreference
 		android:key="scrobble"
 		android:title="@string/scrobble_title"
diff --git a/src/ch/blinkenlights/android/vanilla/PlaybackService.java b/src/ch/blinkenlights/android/vanilla/PlaybackService.java
index 788ab03c..e6c1bfa8 100644
--- a/src/ch/blinkenlights/android/vanilla/PlaybackService.java
+++ b/src/ch/blinkenlights/android/vanilla/PlaybackService.java
@@ -59,6 +59,7 @@ import android.provider.MediaStore;
 import android.util.Log;
 import android.widget.RemoteViews;
 import android.widget.Toast;
+import java.lang.Math;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.EOFException;
@@ -388,6 +389,10 @@ public final class PlaybackService extends Service
 	 * of user settings.
 	 */
 	private boolean mForceNotificationVisible;
+	/**
+	 * Amount of songs included in our auto playlist
+	 */
+	private int mAutoPlPlaycounts;
 	/**
 	 * Enables or disables Replay Gain
 	 */
@@ -469,6 +474,8 @@ public final class PlaybackService extends Service
 
 		mReadaheadEnabled = settings.getBoolean(PrefKeys.ENABLE_READAHEAD, false);
 
+		mAutoPlPlaycounts = settings.getInt(PrefKeys.AUTOPLAYLIST_PLAYCOUNTS, 0);
+
 		PowerManager powerManager = (PowerManager)getSystemService(POWER_SERVICE);
 		mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "VanillaMusicLock");
 
@@ -871,6 +878,8 @@ public final class PlaybackService extends Service
 			refreshDuckingValues();
 		} else if (PrefKeys.ENABLE_READAHEAD.equals(key)) {
 			mReadaheadEnabled = settings.getBoolean(PrefKeys.ENABLE_READAHEAD, false);
+		} else if (PrefKeys.AUTOPLAYLIST_PLAYCOUNTS.equals(key)) {
+			mAutoPlPlaycounts = settings.getInt(PrefKeys.AUTOPLAYLIST_PLAYCOUNTS, 0);
 		} else if (PrefKeys.USE_DARK_THEME.equals(key)) {
 			// Theme changed: trigger a restart of all registered activites
 			ArrayList<PlaybackActivity> list = sActivities;
@@ -1362,10 +1371,10 @@ public final class PlaybackService extends Service
 	public void onCompletion(MediaPlayer player)
 	{
 
-		// Count this song as played
 		Song song = mTimeline.getSong(0);
-		mHandler.sendMessage(mHandler.obtainMessage(MSG_UPDATE_PLAYCOUNTS, song));
 
+		// Count this song as played
+		mHandler.sendMessageDelayed(mHandler.obtainMessage(MSG_UPDATE_PLAYCOUNTS, song), 2500);
 
 		if (finishAction(mState) == SongTimeline.FINISH_REPEAT_CURRENT) {
 			setCurrentSong(0);
@@ -1545,6 +1554,18 @@ public final class PlaybackService extends Service
 		case MSG_UPDATE_PLAYCOUNTS:
 			Song song = (Song)message.obj;
 			mPlayCounts.countSong(song);
+
+			// Update the playcounts playlist in ~20% of all cases if enabled
+			if (mAutoPlPlaycounts > 0 && Math.random() > 0.8) {
+				ContentResolver resolver = getContentResolver();
+				// Add an invisible whitespace to adjust our sorting
+				String playlistName = "\u200B"+getString(R.string.autoplaylist_playcounts_name, mAutoPlPlaycounts);
+				long id = Playlist.createPlaylist(resolver, playlistName);
+				ArrayList<Long> items = mPlayCounts.getTopSongs(mAutoPlPlaycounts);
+				Playlist.addToPlaylist(resolver, id, items);
+			}
+
+
 			break;
 		default:
 			return false;
diff --git a/src/ch/blinkenlights/android/vanilla/PrefKeys.java b/src/ch/blinkenlights/android/vanilla/PrefKeys.java
index 3fd6850a..53377b5c 100644
--- a/src/ch/blinkenlights/android/vanilla/PrefKeys.java
+++ b/src/ch/blinkenlights/android/vanilla/PrefKeys.java
@@ -67,4 +67,5 @@ public class PrefKeys {
 	public static final String USE_DARK_THEME = "use_dark_theme";
 	public static final String FILESYSTEM_BROWSE_START = "filesystem_browse_start";
 	public static final String VOLUME_DURING_DUCKING = "volume_during_ducking";
+	public static final String AUTOPLAYLIST_PLAYCOUNTS = "playcounts_autoplaylist";
 }