nuke blank tranlations

Author: mikooomich

app/src/main/java/org/akanework/gramophone/logic/utils/SemanticLyrics.kt

@@ -705,10 +705,18 @@ fun parseLrc(lyricText: String, trimEnabled: Boolean, multiLineEnabled: Boolean)
         }
     }
     out.sortBy { it.start }
+    val invalidLines = ArrayList<LyricLine>()
     var previousLyric: LyricLine? = null
     val defaultIsWalaokeM = out.find { it.speaker?.isWalaoke == true } != null &&
             out.find { it.speaker?.isWalaoke == false } == null
     out.forEachIndexed { i, lyric ->
+        val isTranslated = lyric.start == previousLyric?.start
+                && (previousLyric.text.isNotBlank() || lyric.text.isBlank())
+        // mark blank translations for deletion
+        if (isTranslated && lyric.text.isBlank()) {
+            invalidLines.add(lyric)
+            return@forEachIndexed
+        }
         if (defaultIsWalaokeM && lyric.speaker == null)
             lyric.speaker = SpeakerEntity.Male
         lyric.end = lyric.end.takeIf { it != 0uL }
@@ -717,10 +725,11 @@ fun parseLrc(lyricText: String, trimEnabled: Boolean, multiLineEnabled: Boolean)
                 ?.words?.lastOrNull()?.timeRange?.last else null)
                     ?: out.find { it.start > lyric.start }?.start?.minus(1uL)
                     ?: Long.MAX_VALUE.toULong()
-        lyric.isTranslated = lyric.start == previousLyric?.start
-                && (previousLyric.text.isNotBlank() || lyric.text.isBlank())
+        lyric.isTranslated = isTranslated
         previousLyric = lyric
     }
+    out.removeAll(invalidLines)
+
     while (out.firstOrNull()?.text?.isBlank() == true)
         out.removeAt(0)
     //while (out.lastOrNull()?.text?.isBlank() == true)