#!/bin/bash -e

#

# (c) 2013, Tomas Zeman <tzeman@volny.cz>

#

# License:

#  This program is distributed in the hope that it will be useful,

#  but WITHOUT ANY WARRANTY; without even the implied warranty of

#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

#

mysql_cmd=${MYSQLCMD:-"mysql test"}

imgfolder=${IMGFOLDER:-"./images"}

imgtable=${IMGTABLE:-"images"}

[ -d $imgfolder ] || mkdir -p $imgfolder

mfile=`mktemp -t m2m.XXXXXX`

mdir=`mktemp -d -t m2m.XXXXXX`

cleanup()

{

	rm -fr $mfile $mdir

}

trap cleanup EXIT

cat > $mfile

munpack -q -C $mdir < $mfile > /dev/null

mfrom=$(822field from < $mfile | sed -e 's/^ \+//')

mdate=$(822date < $mfile | head -2 | tail -1 | sed -e 's/ \++[0-9]\+$//')

mmsgid=$(822field message-id < $mfile | sed -e 's/^ \+//')

process_images()

{

	pat="*.$1"

	while IFS= read -d $'\0' -r f; do

		mt=$(file -b --mime-type "$f")

		if [ `expr match "$mt" "image/"` -gt 0 ]; then

			on=$(basename "$f")

			ext=$(echo "${on##*.}" | tr [A-Z] [a-z])

			fn="$(date '+%s.%N').$$.$ext"

			ts=$(date '+%F %T')

			cat "$f" > $imgfolder/$fn.tmp

			mv $imgfolder/$fn.tmp $imgfolder/$fn

			chmod 644 $imgfolder/$fn

			printf "INSERT INTO $imgtable (file_name, orig_name, mime_type, mail_from, mail_date, mail_message_id, ts) VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s');\n" "$fn" "$on" "$mt" "$mfrom" "$mdate" "$mmsgid" "$ts" | $mysql_cmd

		fi

	done < <(find $mdir -type f -name "$pat" -print0)

}

process_images '[Jj][Pp][Gg]'

process_images '[Pp][Nn][Gg]'

process_images '[Tt][Ii][Ff][Ff]'

exit 0