Actually fix history view count

app/src/main/java/org/schabi/newpipe/database/history/model/StreamHistoryEntity.java

@@ -4,7 +4,6 @@
 import androidx.room.ColumnInfo;
 import androidx.room.Entity;
 import androidx.room.ForeignKey;
-import androidx.room.Ignore;
 import androidx.room.Index;
 
 import org.schabi.newpipe.database.stream.model.StreamEntity;
@@ -42,18 +41,19 @@ public class StreamHistoryEntity {
     @ColumnInfo(name = STREAM_REPEAT_COUNT)
     private long repeatCount;
 
-    public StreamHistoryEntity(final long streamUid, @NonNull final OffsetDateTime accessDate,
+    /**
+     * @param streamUid the stream id this history item will refer to
+     * @param accessDate the last time the stream was accessed
+     * @param repeatCount the total number of views this stream received
+     */
+    public StreamHistoryEntity(final long streamUid,
+                               @NonNull final OffsetDateTime accessDate,
                                final long repeatCount) {
         this.streamUid = streamUid;
         this.accessDate = accessDate;
         this.repeatCount = repeatCount;
     }
 
-    @Ignore
-    public StreamHistoryEntity(final long streamUid, @NonNull final OffsetDateTime accessDate) {
-        this(streamUid, accessDate, 0); // start with 0 views (adding views will be done elsewhere)
-    }
-
     public long getStreamUid() {
         return streamUid;
     }

app/src/main/java/org/schabi/newpipe/local/history/HistoryRecordManager.java

@@ -128,13 +128,11 @@ public Maybe<Long> markAsWatched(final StreamInfoItem info) {
 
             // Add a history entry
             final StreamHistoryEntity latestEntry = streamHistoryTable.getLatestEntry(streamId);
-            if (latestEntry != null) {
-                streamHistoryTable.delete(latestEntry);
-                latestEntry.setAccessDate(currentTime);
-                latestEntry.setRepeatCount(latestEntry.getRepeatCount() + 1);
-                return streamHistoryTable.insert(latestEntry);
+            if (latestEntry == null) {
+                // never actually viewed: add history entry but with 0 views
+                return streamHistoryTable.insert(new StreamHistoryEntity(streamId, currentTime, 0));
             } else {
-                return streamHistoryTable.insert(new StreamHistoryEntity(streamId, currentTime));
+                return 0L;
             }
         })).subscribeOn(Schedulers.io());
     }
@@ -155,7 +153,8 @@ public Maybe<Long> onViewed(final StreamInfo info) {
                 latestEntry.setRepeatCount(latestEntry.getRepeatCount() + 1);
                 return streamHistoryTable.insert(latestEntry);
             } else {
-                return streamHistoryTable.insert(new StreamHistoryEntity(streamId, currentTime));
+                // just viewed for the first time: set 1 view
+                return streamHistoryTable.insert(new StreamHistoryEntity(streamId, currentTime, 1));
             }
         })).subscribeOn(Schedulers.io());
     }

app/src/main/java/org/schabi/newpipe/player/Player.java

@@ -2485,22 +2485,31 @@ public void onEvents(@NonNull final com.google.android.exoplayer2.Player player,
         Listener.super.onEvents(player, events);
         MediaItemTag.from(player.getCurrentMediaItem()).ifPresent(tag -> {
             if (tag == currentMetadata) {
-                return;
+                return; // we still have the same metadata, no need to do anything
             }
+            final StreamInfo previousInfo = Optional.ofNullable(currentMetadata)
+                    .flatMap(MediaItemTag::getMaybeStreamInfo).orElse(null);
             currentMetadata = tag;
-            if (!tag.getErrors().isEmpty()) {
+
+            if (!currentMetadata.getErrors().isEmpty()) {
+                // new errors might have been added even if previousInfo == tag.getMaybeStreamInfo()
                 final ErrorInfo errorInfo = new ErrorInfo(
-                        tag.getErrors().get(0),
+                        currentMetadata.getErrors(),
                         UserAction.PLAY_STREAM,
-                        "Loading failed for [" + tag.getTitle() + "]: " + tag.getStreamUrl(),
-                        tag.getServiceId());
+                        "Loading failed for [" + currentMetadata.getTitle()
+                                + "]: " + currentMetadata.getStreamUrl(),
+                        currentMetadata.getServiceId());
                 ErrorUtil.createNotification(context, errorInfo);
             }
-            tag.getMaybeStreamInfo().ifPresent(info -> {
+
+            currentMetadata.getMaybeStreamInfo().ifPresent(info -> {
                 if (DEBUG) {
                     Log.d(TAG, "ExoPlayer - onEvents() update stream info: " + info.getName());
                 }
-                updateMetadataWith(info);
+                if (previousInfo == null || !previousInfo.getUrl().equals(info.getUrl())) {
+                    // only update with the new stream info if it has actually changed
+                    updateMetadataWith(info);
+                }
             });
         });
     }