set_iptc_keywords

#! /usr/bin/env bash

set -e
shopt -s nocasematch

declare -r COLLECTOR_CMD=$(dirname "$0")/lib/collect_associated_files.sh

. "$(dirname "$0")/lib/sidecar.sh"
. "$(dirname "$0")/lib/jpeg.sh"

while getopts "v" opt; do
    case $opt in
		v )
			declare -r VERBOSE=;;
	esac
done
shift $(expr $OPTIND - 1 )

declare -r KEYWORDS=$1
if [[ -z $KEYWORDS ]]; then
	echo "[ERROR] No keywords" >&2
	exit 1
elif [[ -f $KEYWORDS || -d $KEYWORDS ]]; then
	echo "[ERROR] Keywords parameter seems to be a file or directory - actual keywords parameter is missing?" >&2
	exit 1
fi

shift 1
declare -r FILES=$@

set -u


"$COLLECTOR_CMD" $FILES | while read -r file; do

	if [[ $file =~ .*\.pp[23]$ ]]; then

		if ! [[ -w $file ]]; then
			chmod u+w "$file"
			declare restore_write_protection=
		fi

		if ! grep -q "^\[IPTC\]$" "$file"; then
			echo -e "\n[IPTC]\nKeywords=;\n" >> $file			
		fi

		sidecar_add_iptc_keywords "$file" "$KEYWORDS"
		
		if [[ -v restore_write_protection ]]; then
			chmod u-w "$file"
			unset restore_write_protection
		fi
		
		if [[ -v VERBOSE ]]; then
			echo "[INFO] $file" >&2
		fi		

	elif [[ $file =~ .*/converted/.*\.jpg$ ]]; then
		
		if ! [[ -w $file ]]; then
			test -v SIMULATE || chmod u+w "$file"
			declare restore_write_protection=
		fi

		jpeg_set_iptc_keywords "$KEYWORDS" "$file"

		if [[ -v restore_write_protection ]]; then
			chmod u-w "$file"
			unset restore_write_protection
		fi
		
		if [[ -v VERBOSE ]]; then
			echo "[INFO] $file" >&2
		fi	

	fi
	
done