A bash script for renaming photos downloaded using Google Takeout. It assigns a sensible file name to each photo and copies it to a new location with error logs and replicated directory structure.

google-photos-parser.sh

#!/bin/bash

INPUT_FOLDER=$1
OUTPUT_FOLDER=$2

if [ -z "$INPUT_FOLDER" ] || [ -z "$OUTPUT_FOLDER" ]; then
	echo "Usage: sort.sh <input folder> <output folder>"
	exit 1;
fi

echo > "$OUTPUT_FOLDER/omitted.log"
echo > "$OUTPUT_FOLDER/failed.log"

CORRECT_FILE_REGEX='[1-2][0-9][0-9][0-9]-[0-1][0-9]-[0-3][0-9]_[0-2][0-9]-[0-5][0-9]-[0-5][0-9]'
UNIT_TIMESTAMP_MILLISECONDS_REGEX='([0-9]{13})'
UNIT_TIMESTAMP_SECONDS_REGEX='([0-9]{10})'
FOLDER_REGEX='([1-2][0-9][0-9][0-9])-([0-1][0-9])-([0-3][0-9])'
EXIF_REGEX='([1-2][0-9][0-9][0-9]):([0-1][0-9]):([0-3][0-9]) ([0-2][0-9]):([0-5][0-9]):([0-5][0-9])'
FILE_REGEX='([1-2][0-9][0-9][0-9])([0-1][0-9])([0-3][0-9])'
FILE_ALT_REGEX='([0-1][0-9])([0-1][0-9])([0-3][0-9])-([0-2][0-9])([0-5][0-9])([0-5][0-9])'
ANY_NUMBER_REGEX='([0-9]+)\.'

find "$INPUT_FOLDER" -print0 | while read -d $'\0' FILE; do
	FILENAME=$(echo "$(basename "$FILE")" | cut -f 1 -d '.')
	EXTENSION=$(echo "${FILE#*.}" | tr '[:upper:]' '[:lower:]')

	if [ "$EXTENSION" != "jpg" ] && [ "$EXTENSION" != "jpeg" ] && [ "$EXTENSION" != "mts" ] && [ "$EXTENSION" != "mp4" ]; then
		echo "$FILE" >> "$OUTPUT_FOLDER/omitted.log"
		continue;
	fi

	if [[ $FILE =~ $CORRECT_FILE_REGEX ]]; then
		echo "$FILE is OK"
		continue;
	fi

	# Fetch the date from create date
	EXIF_OUTPUT=$(exiftool -s -CreateDate "$FILE")

	[[ $EXIF_OUTPUT =~ $EXIF_REGEX ]]

	YEAR=${BASH_REMATCH[1]}
	MONTH=${BASH_REMATCH[2]}
	DAY=${BASH_REMATCH[3]}
	HOUR=${BASH_REMATCH[4]}
	MINUTE=${BASH_REMATCH[5]}
	SECOND=${BASH_REMATCH[6]}
	
	# Fetch the date from date/time original
	if [ -z $YEAR ] || [ -z $MONTH ] || [ -z $DAY ]; then
		EXIF_OUTPUT=$(exiftool -s -DateTimeOriginal "$FILE")

		[[ $EXIF_OUTPUT =~ $EXIF_REGEX ]]

		YEAR=${BASH_REMATCH[1]}
		MONTH=${BASH_REMATCH[2]}
		DAY=${BASH_REMATCH[3]}
		HOUR=${BASH_REMATCH[4]}
		MINUTE=${BASH_REMATCH[5]}
		SECOND=${BASH_REMATCH[6]}
	fi
	
	# Fetch the date from media create date
	if [ -z $YEAR ] || [ -z $MONTH ] || [ -z $DAY ]; then
		EXIF_OUTPUT=$(exiftool -s -MediaCreateDate "$FILE")

		[[ $EXIF_OUTPUT =~ $EXIF_REGEX ]]

		YEAR=${BASH_REMATCH[1]}
		MONTH=${BASH_REMATCH[2]}
		DAY=${BASH_REMATCH[3]}
		HOUR=${BASH_REMATCH[4]}
		MINUTE=${BASH_REMATCH[5]}
		SECOND=${BASH_REMATCH[6]}
	fi
	
	# Fetch the date from the filename
	if [ -z $YEAR ] || [ -z $MONTH ] || [ -z $DAY ]; then
		# YYYYMMDD format
		if [[ $FILE =~ $FILE_REGEX ]]; then
			YEAR=${BASH_REMATCH[1]}
			MONTH=${BASH_REMATCH[2]}
			DAY=${BASH_REMATCH[3]}
	
		# YYMMDD-HHMMSS format	
		elif [[ $FILE =~ $FILE_ALT_REGEX ]]; then
			YEAR="20${BASH_REMATCH[1]}"
			MONTH=${BASH_REMATCH[2]}
			DAY=${BASH_REMATCH[3]}
			HOUR=${BASH_REMATCH[4]}
			MINUTE=${BASH_REMATCH[5]}
			SECOND=${BASH_REMATCH[6]}

		# UNIX timestamp with milliseconds
		elif [[ $FILENAME =~ $UNIX_TIMESTAMP_MILLISECONDS_REGEX ]]; then
			TIMESTAMP=$(date -d @$(echo "($FILENAME + 500) / 1000" | bc) +'%Y:%m:%d %H:%M:%S')
			[[ $TIMESTAMP =~ $EXIF_REGEX ]]

			YEAR=${BASH_REMATCH[1]}
			MONTH=${BASH_REMATCH[2]}
			DAY=${BASH_REMATCH[3]}
			HOUR=${BASH_REMATCH[4]}
			MINUTE=${BASH_REMATCH[5]}
			SECOND=${BASH_REMATCH[6]}

		# UNIX timestamp with seconds
		elif [[ $FILENAME =~ $UNIX_TIMESTAMP_SECONDS_REGEX ]]; then
			TIMESTAMP=$(date -d @$FILENAME +'%Y:%m:%d %H:%M:%S')
			[[ $TIMESTAMP =~ $EXIF_REGEX ]]

			YEAR=${BASH_REMATCH[1]}
			MONTH=${BASH_REMATCH[2]}
			DAY=${BASH_REMATCH[3]}
			HOUR=${BASH_REMATCH[4]}
			MINUTE=${BASH_REMATCH[5]}
			SECOND=${BASH_REMATCH[6]}

		# Fetch the date from the folder
		elif [[ $FILE =~ $FOLDER_REGEX ]]; then
			YEAR=${BASH_REMATCH[1]}
			MONTH=${BASH_REMATCH[2]}
			DAY=${BASH_REMATCH[3]}
		fi

	fi

	# Determine the output folder
	THIS_OUTPUT_FOLDER=""

	if [[ $FILE =~ $FOLDER_REGEX ]]; then
		THIS_OUTPUT_FOLDER=$OUTPUT_FOLDER
	else
		THIS_OUTPUT_FOLDER="$OUTPUT_FOLDER/$(basename "$(dirname "$FILE")")"
	fi

	# Make sure the folder exists
	if [ ! -d "$THIS_OUTPUT_FOLDER" ]; then
		mkdir "$THIS_OUTPUT_FOLDER"
	fi

	# Build the filename	
	FILENAME=""

	if [ ! -z $YEAR ] && [ ! -z $MONTH ] && [ ! -z $DAY ]; then
		FILENAME="${YEAR}-${MONTH}-${DAY}"
	else
		echo "No date found for $FILE"
		echo "$FILE" >> "$OUTPUT_FOLDER/failed.log"
		continue;
	fi

	if [ ! -z $HOUR ] || [ ! -z $MINUTE ] || [ ! -z $SECOND ]; then
		FILENAME="${FILENAME}_${HOUR}-${MINUTE}-${SECOND}"
	else
		# If no time was found, create an appendix
		APPENDIX=0
	
		[[ $(basename "$FILE") =~ $ANY_NUMBER_REGEX ]]
	
		# If an existing appendix was found, use it
		if [ ! -z ${BASH_REMATCH[1]} ]; then
			APPENDIX=${BASH_REMATCH[1]}

		# If not, construct one, and don't overwrite existing files
		else	
			while ls "${THIS_OUTPUT_FOLDER}/${FILENAME}_${APPENDIX}."* 1> /dev/null 2>&1; do
				let APPENDIX++
			done
		fi

		FILENAME="${FILENAME}_${APPENDIX}"
	fi

	FILENAME="${FILENAME}.${EXTENSION}"

	cp "$FILE" "$THIS_OUTPUT_FOLDER/$FILENAME"
	echo "$THIS_OUTPUT_FOLDER/$FILENAME"
done