#!/usr/bin/with-contenv bash
TITLESHORT="VPP"

set -e

Configuration () {
	log "############################################ DOCKER $TITLE"
	log "############################################ SCRIPT Video Post Processor ($TITLESHORT)"
	log "############################################ SCRIPT VERSION 1.0.0"
	log "############################################ DOCKER VERSION $VERSION"
	log "############################################ CONFIGURATION VERIFICATION"
	
	log "TITLESHORT: Required Audio/Subtitle Language: ${VIDEO_LANG}"
	if [ ${VIDEO_MKVCLEANER} = TRUE ]; then
		log "$TITLESHORT: MKV Cleaner: ENABLED"
	else
		log "$TITLESHORT: MKV Cleaner: DISABLED"
	fi
	if [ ${VIDEO_SMA} = TRUE ]; then
		log "TITLESHORT: Sickbeard MP4 Automator (SMA): Tagging: ENABLED"
		if [ ${VIDEO_SMA_TAGGING} = TRUE ]; then
			tagging="-a"
			log "TITLESHORT: Sickbeard MP4 Automator (SMA): Tagging: ENABLED"
		else
			tagging="-nt"
			log "TITLESHORT: Sickbeard MP4 Automator (SMA): Tagging: DISABLED"
		fi
	else
		log "TITLESHORT:: Sickbeard MP4 Automator (SMA): DISABLED"
	fi
	
	if [ -z "VIDEO_SMA_TAGGING" ]; then
		VIDEO_SMA_TAGGING=FALSE
	fi
}

Configuration

log () {
    m_time=`date "+%F %T"`
    echo $m_time" "$1
}

if [ ${VIDEO_SMA} = TRUE ]; then
	touch "$1/sma-conversion-check"
elif [ ${VIDEO_MKVCLEANER} = TRUE ]; then 
	touch "$1/sma-conversion-check"
fi

# check for video files
if find "$1" -type f -iregex ".*/.*\.\(mkv\|mp4\|avi\)" | read; then
	sleep 0.1
else
	echo "ERROR: No video files found for processing"
	exit 1
fi


filecount=$(find "$1" -type f -iregex ".*/.*\.\(mkv\|mp4\|avi\)" | wc -l)
echo "Processing ${filecount} video files..."
count=0
find "$1" -type f -iregex ".*/.*\.\(mkv\|mp4\|avi\)" -print0 | while IFS= read -r -d '' video; do
	count=$(($count+1))
	echo ""
	echo "===================================================="
	basefilename="${video%.*}"
	filename="$(basename "$video")"
	extension="${filename##*.}"
	echo "Begin processing $count of $filecount: $filename"
	echo "Checking for audio/subtitle tracks"
	tracks=$(mkvmerge -J "$video")
	if [ ! -z "${tracks}" ]; then
		# video tracks
		VideoTrack=$(echo "${tracks}" | jq ".tracks[] | select(.type==\"video\") | .id")
		VideoTrackCount=$(echo "${tracks}" |  jq ".tracks[] | select(.type==\"video\") | .id" | wc -l)
		# video preferred language
		VideoTrackLanguage=$(echo "${tracks}" | jq ".tracks[] | select((.type==\"video\") and select(.properties.language==\"${VIDEO_LANG}\")) | .id")
		# audio tracks
		AudioTracks=$(echo "${tracks}" | jq ".tracks[] | select(.type==\"audio\") | .id")
		AudioTracksCount=$(echo "${tracks}" | jq ".tracks[] | select(.type==\"audio\") | .id" | wc -l)
		# audio preferred language
		AudioTracksLanguage=$(echo "${tracks}" | jq ".tracks[] | select((.type==\"audio\") and select(.properties.language==\"${VIDEO_LANG}\")) | .id")
		AudioTracksLanguageCount=$(echo "${tracks}" | jq ".tracks[] | select((.type==\"audio\") and select(.properties.language==\"${VIDEO_LANG}\")) | .id" | wc -l)
		AudioTracksLanguageFound=$(echo "${tracks}" | jq ".tracks[] | select(.type==\"audio\") | .properties.language")
		# audio unkown laguage
		AudioTracksLanguageUND=$(echo "${tracks}" | jq ".tracks[] | select((.type==\"audio\") and select(.properties.language==\"und\")) | .id")
		AudioTracksLanguageUNDCount=$(echo "${tracks}" | jq ".tracks[] | select((.type==\"audio\") and select(.properties.language==\"und\")) | .id" | wc -l)
		AudioTracksLanguageNull=$(echo "${tracks}" | jq ".tracks[] | select((.type==\"audio\") and select(.properties.language==null)) | .id")
		AudioTracksLanguageNullCount=$(echo "${tracks}" | jq ".tracks[] | select((.type==\"audio\") and select(.properties.language==null)) | .id" | wc -l)
		# audio foreign language
		AudioTracksLanguageForeignCount=$(echo "${tracks}" | jq ".tracks[] | select((.type==\"audio\") and select(.properties.language!=\"${VIDEO_LANG}\")) | .id" | wc -l)		
		# subtitle tracks
		SubtitleTracks=$(echo "${tracks}" | jq ".tracks[] | select(.type==\"subtitles\") | .id")
		SubtitleTracksCount=$(echo "${tracks}" | jq ".tracks[] | select(.type==\"subtitles\") | .id" | wc -l)
		# subtitle preferred langauge
		SubtitleTracksLanguage=$(echo "${tracks}" | jq ".tracks[] | select((.type==\"subtitles\") and select(.properties.language==\"${VIDEO_LANG}\")) | .id")
		SubtitleTracksLanguageCount=$(echo "${tracks}" | jq ".tracks[] | select((.type==\"subtitles\") and select(.properties.language==\"${VIDEO_LANG}\")) | .id" | wc -l)
		SubtitleTracksLanguageFound=$(echo "${tracks}" | jq ".tracks[] | select(.type==\"subtitles\") | .properties.language")

	else
		echo "ERROR: ffprobe failed to read tracks and set values"
		rm "$video" && echo "INFO: deleted: $video"
	fi
	
	# Check for video track
	if [ -z "${VideoTrack}" ]; then
		echo "ERROR: no video track found"
		rm "$video" && echo "INFO: deleted: $filename"
		continue
	else
		echo "$VideoTrackCount video track found!"
	fi
	
	# Check for audio track
	if [ -z "${AudioTracks}" ]; then
		echo "ERROR: no audio tracks found"
		rm "$video" && echo "INFO: deleted: $filename"
		continue
	else
		echo "$AudioTracksCount audio tracks found!"
	fi
	
	# Check for audio track
	if [ ! -z "${SubtitleTracks}" ]; then
		echo "$SubtitleTracksCount subtitle tracks found!"
	fi
	
	if [ ! -z "$AudioTracksLanguage" ] || [ ! -z "$SubtitleTracksLanguage" ]; then
		if [ ${VIDEO_MKVCLEANER} = TRUE ] || [ ${VIDEO_SMA} = TRUE ]; then
			if [ ! -z "$AudioTracksLanguage" ] || [ ! -z "$SubtitleTracksLanguage" ] || [ ! -z "$AudioTracksLanguageUND" ] || [ ! -z "$AudioTracksLanguageNull" ]; then
				sleep 0.1
			else
				echo "Checking for \"${VIDEO_LANG}\" video/audio/subtitle tracks"
				echo "ERROR: No \"${VIDEO_LANG}\" or \"Unknown\" audio tracks found..."
				echo "ERROR: No \"${VIDEO_LANG}\" subtitle tracks found..."
				# rm "$video" && echo "INFO: deleted: $filename"
				exit 1
				continue
			fi
		else
			echo "Checking for \"${VIDEO_LANG}\" video/audio/subtitle tracks"
			if [ ! -z "${AudioTracks}" ]; then
				echo "INFO: ${AudioTracksLanguageFound} audio track found!"
			fi
			if [ ! -z "${SubtitleTracks}" ]; then
				echo "INFO: ${SubtitleTracksLanguageFound} subtitle track found!"
			fi
			echo "ERROR: No \"${VIDEO_LANG}\" audio or subtitle tracks found..."
			# rm "$video" && echo "INFO: deleted: $filename"
			exit 1
			continue
		fi
	else
		if [ ! ${VIDEO_MKVCLEANER} = TRUE ] || [ ! ${VIDEO_SMA} = TRUE ]; then
			echo "Checking for \"${VIDEO_LANG}\" video/audio/subtitle tracks"
			if [ ! -z "$AudioTracksLanguage" ]; then
				echo "$AudioTracksLanguageCount \"${VIDEO_LANG}\" audio track found..."
			fi
			if [ ! -z "$SubtitleTracksLanguage" ]; then
				echo "$SubtitleTracksLanguageCount \"${VIDEO_LANG}\" subtitle track found..."
			fi
		fi
	fi	
		
	if [ ${VIDEO_MKVCLEANER} = TRUE ]; then
		echo "Begin processing with MKV Cleaner..."
		echo "Checking for \"${VIDEO_LANG}\" video/audio/subtitle tracks"
		# Check for unwanted audio tracks and remove/re-label as needed...
		if [ ! -z "$AudioTracksLanguage" ] || [ ! -z "$AudioTracksLanguageUND" ] || [ ! -z "$AudioTracksLanguageNull" ]; then
			if [ $AudioTracksCount -ne $AudioTracksLanguageCount ]; then
				RemoveAudioTracks="true"
				if [ ! -z "$AudioTracksLanguage" ]; then
					MKVaudio=" -a ${VIDEO_LANG}"
					echo "$AudioTracksLanguageCount audio tracks found!"
					unwantedaudiocount=$(($AudioTracksCount-$AudioTracksLanguageCount))
					if [ $AudioTracksLanguageCount -ne $AudioTracksCount ]; then
						unwantedaudio="true"
					fi
				elif [ ! -z "$AudioTracksLanguageUND" ]; then
					for I in $AudioTracksLanguageUND
					do
						OUT=$OUT" -a $I --language $I:${VIDEO_LANG}"
					done
					MKVaudio="$OUT"
					echo "$AudioTracksLanguageUNDCount \"unknown\" audio tracks found, re-tagging as \"${VIDEO_LANG}\""
					unwantedaudiocount=$(($AudioTracksCount-$AudioTracksLanguageUNDCount))
					if [ $AudioTracksLanguageUNDCount -ne $AudioTracksCount ]; then
						unwantedaudio="true"
					fi
				elif [ ! -z "$AudioTracksLanguageNull" ]; then
					for I in $AudioTracksLanguageNull
					do
						OUT=$OUT" -a $I --language $I:${VIDEO_LANG}"
					done
					MKVaudio="$OUT"
					echo "$AudioTracksLanguageNullCount \"unknown\" audio tracks found, re-tagging as \"${VIDEO_LANG}\""
					unwantedaudiocount=$(($AudioTracksCount-$AudioTracksLanguageNullCount))
					if [ $AudioTracksLanguageNullCount -ne $AudioTracksCount ]; then
						unwantedaudio="true"
					fi
				fi
			else
				echo "$AudioTracksLanguageCount audio tracks found!"
				RemoveAudioTracks="false"
				MKVaudio=""
			fi
		elif [ -z "$SubtitleTracksLanguage" ]; then
			if [ ! -z "${AudioTracks}" ]; then
				echo "INFO: ${AudioTracksLanguageFound} audio track found!"
			fi
			if [ ! -z "${SubtitleTracks}" ]; then
				echo "INFO: ${SubtitleTracksLanguageFound} subtitle track found!"
			fi
			echo "ERROR: no \"${VIDEO_LANG}\" audio/subtitle tracks found!"
			# rm "$video" && echo "INFO: deleted: $filename"
			exit 1
			continue
		else
			foreignaudio="true"
			RemoveAudioTracks="false"
			MKVaudio=""
		fi
	
		# Check for unwanted subtitle tracks...
		if [ ! -z "$SubtitleTracks" ]; then
			if [ $SubtitleTracksCount -ne $SubtitleTracksLanguageCount ]; then
				RemoveSubtitleTracks="true"
				MKVSubtitle=" -s ${VIDEO_LANG}"
				if [ ! -z "$SubtitleTracksLanguage" ]; then
					echo "$SubtitleTracksLanguageCount subtitle tracks found!"
				fi
				unwantedsubtitlecount=$(($SubtitleTracksCount-$SubtitleTracksLanguageCount))
				if [ $SubtitleTracksLanguageCount -ne $SubtitleTracksCount ]; then
					unwantedsubtitle="true"
				fi
			else
				echo "$SubtitleTracksLanguageCount subtitle tracks found!"
				RemoveSubtitleTracks="false"
				MKVSubtitle=""
			fi
		else
			RemoveSubtitleTracks="false"
			MKVSubtitle=""
		fi
		
		# Correct video language, if needed...
		if [ -z "$VideoTrackLanguage" ]; then	
			if [ ! -z "$AudioTracksLanguage" ] || [ ! -z "$AudioTracksLanguageUND" ] || [ ! -z "$AudioTracksLanguageNull" ]; then
				SetVideoLanguage="true"
				if [ "${RemoveAudioTracks}" = true ] || [ "${RemoveSubtitleTracks}" = true ]; then
					echo "$VideoTrackCount \"unknown\" video language track found, re-tagging as \"${VIDEO_LANG}\""
				fi
				MKVvideo=" -d ${VideoTrack} --language ${VideoTrack}:${VIDEO_LANG}"
			else
				foreignvideo="true"
				SetVideoLanguage="false"
				MKVvideo=""
			fi
		else
			echo "$VideoTrackCount video track found!"
			SetVideoLanguage="false"
			MKVvideo=""
		fi
		
		# Display foreign audio track counts
		if [ "$foreignaudio" = true ] || [ "$foreignvideo" = true ]; then
			echo "Checking for \"foreign\" audio/video tracks"
			if [ "$foreignvideo" = true ]; then
				echo "$VideoTrackCount video track found!"
				foreignvideo="false"
			fi
			if [ "$foreignaudio" = true ]; then
				echo "$AudioTracksLanguageForeignCount audio tracks found!"
				foreignaudio="false"
			fi
		fi
		
		# Display unwanted audio/subtitle track counts
		if [ "$unwantedaudio" = true ] || [ "$unwantedsubtitle" = true ]; then
			echo "Checking for unwanted \"not: ${VIDEO_LANG}\" audio/subtitle tracks"
			if [ "$unwantedaudio" = true ]; then
				echo "$unwantedaudiocount audio tracks to remove..."
				unwantedaudio="false"
			fi	
			if [ "$unwantedsubtitle" = true ]; then
				echo "$unwantedsubtitlecount subtitle tracks to remove..."
				unwantedsubtitle="false"
			fi
		fi	
		skip="false"
		if [ "${RemoveAudioTracks}" = false ] && [ "${RemoveSubtitleTracks}" = false ]; then
			if find "$video" -type f -iname "*.mkv" | read; then
				echo "INFO: Video passed all checks, no processing needed"
				touch "$video"
				if [ ${VIDEO_SMA} = TRUE ]; then
				    skip="true"
				fi
			else
				echo "INFO: Video passed all checks, but is in the incorrect container, repackaging as mkv..."
				MKVvideo=" -d ${VideoTrack} --language ${VideoTrack}:${VIDEO_LANG}"
				MKVaudio=" -a ${VIDEO_LANG}"
				MKVSubtitle=" -s ${VIDEO_LANG}"
			fi
		fi
		if [ $skip = false ]; then
			if mkvmerge --no-global-tags --title "" -o "${basefilename}.merged.mkv"${MKVvideo}${MKVaudio}${MKVSubtitle} "$video"; then
				echo "SUCCESS: mkvmerge complete"
				echo "INFO: Options used:${MKVvideo}${MKVaudio}${MKVSubtitle}"
				# cleanup temp files and rename
				mv "$video" "$video.original" && echo "INFO: Renamed source file"
				mv "${basefilename}.merged.mkv" "${basefilename}.mkv" && echo "INFO: Renamed temp file"
				rm "$video.original" && echo "INFO: Deleted source file"
				extension="mkv"
			else
				echo "ERROR: mkvmerge failed"
				rm "$video" && echo "INFO: deleted: $video"
				rm "${basefilename}.merged.mkv" && echo "INFO: deleted: ${basefilename}.merged.mkv"
				continue
			fi
		fi
	fi
	
	if [ "${extension}" == "mkv" ];  then
		log "========================START MKVPROPEDIT========================"
		mkvpropedit "${basefilename}.${extension}" --add-track-statistics-tags
		log "========================STOP MKVPROPEDIT========================="
	fi
	
	if [ ${VIDEO_SMA} = TRUE ]; then
		if [ -f "${basefilename}.${extension}" ]; then			
			echo ""
			echo "Begin processing with Sickbeard MP4 Automator..."
			echo ""
			# Manual run of Sickbeard MP4 Automator
			if python3 /usr/local/sma/manual.py --config "/config/scripts/configs/$5-sma.ini" -i "${basefilename}.${extension}" $tagging; then
				echo "Processing complete for: ${filename}!"
			else
				echo "ERROR: Sickbeard MP4 Automator Processing Error"
				rm "$video" && echo "INFO: deleted: $filename"
			fi
		fi
	fi
	echo "===================================================="
done

if [ ${VIDEO_SMA} = TRUE ] || [ ${VIDEO_MKVCLEANER} = TRUE ]; then
	find "$1" -type f ! -newer "$1/sma-conversion-check" ! -name "sma-conversion-check" -delete
	# check for video files
	if find "$1" -type f -iregex ".*/.*\.\(mkv\|mp4\)" | read; then
		echo "Post Processing Complete!"
	else
		echo "ERROR: Post Processing failed, no video files found..."
		exit 1
	fi
	if [ -f "$1/sma-conversion-check" ]; then 
		rm "$1/sma-conversion-check"
	fi
fi

exit $?