Categorizing images by EXIF date or by file creation date if EXIF is missing

categorize-photos.sh

#!/usr/bin/env bash

SOURCE_DIR="${HOME}/Pictures/Photos/DCIM_SYNCED"
DEST_DIR="${HOME}/Pictures/Photos/Archived"

echo "Categorizing files from ${SOURCE_DIR} to ${DEST_DIR} ..."

## Find files and categorize them
find "${SOURCE_DIR}" -type f -regex ".*/.*\.\(jpg\|JPG\|jpeg\|JPEG\|png\|PNG\)" |
	while IFS= read -r file; do
		subDir=""

		## Read exif date
		exifDate=`exiftool -CreateDate "${file}" | grep -oP "([0-9]{4}):([0-9]{2}):([0-9]{2})"`
		year="$(echo ${exifDate} | cut -f1 -d:)"
		month="$(echo ${exifDate} | cut -f2 -d:)"
		day="$(echo ${exifDate} | cut -f3 -d:)"

		## Read file created date if there's no exif
		if [ -z "${exifDate}" ]; then
			echo "Exif is missing: ${file}"

			year="$(date -d "$(stat -c %y "${file}")" +%Y)"
			month="$(date -d "$(stat -c %y "${file}")" +%m)"
			day="$(date -d "$(stat -c %y "${file}")" +%d)"
			subDir="/no-exif"
		fi
		
		dirArhived="${DEST_DIR}${subDir}/${year}/${month}.${day}"

		## Replace spaces and lowercase file names
		newFile=$(basename "${file}" | sed 's/ /-/g' | awk '{print tolower($0)}')

		## Create the directories if they don't exist. The -p flag
		## makes 'mkdir' create the parent directories as needed so
		## you don't need to create $year explicitly.
		[[ ! -d "${dirArhived}" ]] && mkdir -p "${dirArhived}";

		## Move the file
		mv "${file}" "${dirArhived}/${newFile}"

		echo "moved: ${file} to ${dirArhived}/${newFile}"
	done

## Remove empty dirs and files
find "${SOURCE_DIR}" -empty -delete
find "${DEST_DIR}" -empty -delete

echo "... Done!"