Rename subs in season downloads and move up to the season's mkv/mp4 folder

subs_tv.sh

#!/usr/bin/env bash
#--------------------------------------------------------------------------------------------
# Rename English subtitles in TV season's Subs folder and move up to season's mkv/mp4 folder
#
# Author: 007revad
# Gist on Github: https://gist.github.com/007revad
# Script verified at https://www.shellcheck.net/
#--------------------------------------------------------------------------------------------

if [[ -n $1 ]] && [[ -d $1 ]]; then
	Show="$1"
else
	echo Invalid argument: "$1"
	exit 255
fi

cd "$Show" || { echo "cd $Show failed"; exit 255; }

if [[ -d ${Show}/Subs ]]; then
	cd Subs || { echo "cd Subs failed"; exit 255; }
	Subs_List=$(ls)
else
	echo No Subs folder exists
	exit
fi


copysubs() {
	count=$(ls -Uba1 | grep -cE '.srt|.ssa|.ass')
	if [[ ${count} -eq 1 ]]; then
		# Only 1 subtitle file in directory so rename to match video file
		# Skip if $Show"/"$Dir"."$extension exists already in video directory
		if [[ ! -f ${Show}/${Dir}"."${extension} ]]; then
			cp "${File}" "${Show}"/"${Dir}"."${extension}"
			echo Copied: "${Dir}"."${extension}"
		else
			echo Skipping existing "${language}" ."${extension}" file:
			echo "${Dir}"."${extension}"
		fi
	elif [[ ${count} -gt 1 ]]; then 
		# Multiple subtitle files in directory so append original sub name
		# Skip if ${Show}/${Dir}_${File} exists already in video directory
		if [[ ! -f ${Show}/${Dir}_${File} ]]; then
			cp "${File}" "${Show}"/"${Dir}"_"${File}"
			echo "Copied: ${Dir}_${File}"
		else
			echo Skipping existing "${language}" ."${extension}" file:
			echo "${Dir}"_"${File}"
		fi
	fi
}


# TV season with subtitle files in episode directories, in Subs directory
for Dir in ${Subs_List}
do
	(
	if [[ -d ${Dir} ]]; then
		cd "${Dir}" || { echo cd "${Dir}" failed; exit; }
		Srt_List=$(ls)
		# Check if any subs in Subs folder have eng in their name
		# so we can skip subs with other languages in their name
		engexist=$(ls -Uba1 | grep -cE 'eng|Eng|ENG')
		for File in ${Srt_List}
		do
			if [[ -f ${File} ]]; then
				extension="${File##*.}"
				filename="${File%.*}"
				# .srt .ssa or .ass subtitles only
				if [[ ${extension} =~ (srt|ssa|ass) ]]; then
					# Only want English subtitles
					# Check if lowercase filename contains eng
					if [[ ${filename,,} == *"eng"* ]]; then
						language="English"
						copysubs
					elif [[ ! ${engexist} -gt 0 ]]; then
						# Subtitles don't have any language in their name
						# so grab what's there and hope they're English
						language="unknown language"
						copysubs						
					fi
				fi
			fi
		done
	fi
	)
done

exit