# exifinfo - extract EXIF info for all photos in a directory
#          - using exiftool, free download from exiftool.org
#          - script by Owen Townsend, Feb/2022
#
# This script $UV/sf/util/exifinfo called by $UV/sf/util/renameJPG1
# renameJPG1 - copies jpg files from 1 dir to 2nd dir, prefixing names with date_time
#  - calls exifinfo to extract date/Time info for all photos in a directory (yyyymmdd)
#  - then calls makeJPGrenames to create scripts to rename the photos with date/time prefixes
#    yyyymmdd_hhmmss_OriginalCameraFilename (dscf0001.jpg, dscf0002.jpg, etc)
#  - sample command & output for 3 photos in directory 'photodir'
#
# exifinfo photodir
# =================
# DSCF0016.jpg DT=2003:09:07 20:01:03 ISIZE=1600x1200 FSIZE=161 kB  MODEL=FinePix4800 ZOOM
# BMO.jpg      DT=2018:05:06 08:49:04 ISIZE=5184x3888 FSIZE=6.4 MB  MODEL=Canon PowerShot ELPH 360 HS
# Oliver.jpg   DT=2019:08:30 16:25:27 ISIZE=2253x3006 FSIZE=1413 kB MODEL=iPhone 7
#
test -d exifinfo || mkdir exifinfo # mkdir ./exifinfo if not present (to store exifinfo/reports)
dir="$1";
if [[ ! -d  "$dir" ]]; then
   echo "usage: exifinfo directory"
   echo "       =================="
   echo "  - arg1 must be a directory of images jpg,mov,mp4,etc"
   exit 99; fi
#
# translate any '/' slashes in $dir to '_' underscores
dirt=$(echo $dir | tr '/' '_')
#
echo "exifinfo - extract JPG info for makeJPGrenames "
exiftool -q -f -p '$filename DT=$CreateDate ISIZE=$imagesize FSIZE=$filesize MODEL=$model' \
               -d %Y%m%d_%H%M%S $dir >exifinfo/$dirt.exif 2>exifinfo/$dirt.exif_ERRS
#============================================================================================
#
echo "exifinfo written to exifinfo/$dirt.exif & any ERRORs to exifinfo/$dirt.exif_ERRS"
# show only the ERROR file here to alert user (can later investigate both files)
if [[ -s exinfo/$dirt.exif_ERRS ]]; then
   echo "---------------------- exifinfo/$dirt.exif_ERRS -----------------------------"
   more exifinfo/$dirt.exif_ERRS
   else rm -f exifinfo/$dirt.exif_ERRS
fi
exit 0