#!/bin/bash
# Remove orientation information from the EXIF metadata WITHOUT touching pixels.
# Can also remove thumbnail because some programs like Ristretto are bugged by
# the remaining thumbnail orientation metadata. Useful when a photo has wrong
# orientation metadata (e.g. buggy LineageOS app).

usage() {
    echo "Usage: $0 [-t] [FILE]"
    echo "  -t  remove thumbnail"
}

OPT_FLAG_T=
while getopts "ht" OPTION; do
    case $OPTION in
        h) usage; exit 0 ;;
        t) OPT_FLAG_T=true ;;
        *) usage; exit 1 ;;
    esac
done
shift $(( OPTIND - 1 ))

for jpg in "$@"; do
    echo "Fixing \"$jpg\"…"
    exiftool -Orientation= -overwrite_original "$jpg"
    if [[ "$OPT_FLAG_T" = true ]]; then
        exiftool -IFD1:all= -overwrite_original "$jpg" 
    fi
done