#!/bin/bash
##   Cataract Gallery Generator - a simple static web photo gallery
##   cgg-dirgen - Directory index.xml generator
##   Copyright (C) 2008 Tomas Bzatek <tbzatek@users.sourceforge.net>
##
##   This program is free software; you can redistribute it and/or
##   modify it under the terms of the GNU General Public License
##   as published by the Free Software Foundation; either version 2
##   of the License, or any later version.
##
##   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.  See the
##   GNU General Public License for more details.
##
##   You should have received a copy of the GNU General Public License
##   along with this program; if not, write to the Free Software
##   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
##

PREVIEW="no"
PREVIEW_PATH="preview"
NO_FULLSIZE="no"
EXT_THUMB="no"
EXT_THUMB_PATH="thumbnails"
EXT_EXIF="no"
EXT_EXIF_PATH="exif"


print_help()
{
  echo "Usage: cgg-dirgen [OPTION...] > index.xml"
  echo ""
  echo "Options:"
  echo "  -?, --help                Show help options"
  echo "  -d, --preview [dir]       Use supplied preview (web page) images"
  echo "                             - takes optional [dir] argument (default=\"preview\")"
  echo "  -o, --nofullsize          Do not copy original (full size) image"
  echo "                             - deprecated, use global <nofullsize /> tag"
  echo "  -t, --thumbnails [dir]    Use supplied thumbnails"
  echo "                             - takes optional [dir] argument (default=\"thumbnails\")"
  echo "  -e, --exif [dir]          Use external EXIF data (.exv file extension)"
  echo "                             - takes optional [dir] argument (default=\"exif\")"
}


#  Gather arguments

while [[ $1 = -* ]]; do
  case "$1" in
    -d|--preview)
      PREVIEW="yes"
      shift
      if [[ ! $1 == -* && ! "x$1" == "x" ]]; then
        PREVIEW_PATH="$1"
        shift
      fi
      ;;
    -o|--nofullsize)
      NO_FULLSIZE="yes"
      shift
      ;;
    -t|--thumbnails)
      EXT_THUMB="yes"
      shift
      if [[ ! $1 == -* && ! "x$1" == "x" ]]; then
        EXT_THUMB_PATH="$1"
        shift
      fi
      ;;
    -e|--exif)
      EXT_EXIF="yes"
      shift
      if [[ ! $1 == -* && ! "x$1" == "x" ]]; then
        EXT_EXIF_PATH="$1"
        shift
      fi
      ;;
    -h|--help|-\?)
      print_help;
      exit
      ;;
    *)
      echo "Error: Unknown option: $1" >&2
      exit 1
      ;;
  esac
done


#  Write index file

cat << XML_HEADER_STOP
<?xml version="1.0" encoding="utf-8"?>
<gallery type="album">
  <general>
    <ID>Album ID</ID>
    <title>Album Title</title>
    <description><![CDATA[Album description<br/>
    ]]></description>
  </general>

  <items>
XML_HEADER_STOP

for i in `find -L . -maxdepth 1 -type f -iname '*.jpg' -or -iname '*.jpeg' -or -iname '*.gif' -or -iname '*.png' | sort`; do
  INCL="";
  INCL_AFTER="";
  if [[ ${PREVIEW} == "yes" ]]; then INCL=" preview=\"${PREVIEW_PATH}/`echo $i | cut -b 3-`\""; fi
  if [[ ${EXT_THUMB} == "yes" ]]; then INCL+=" thumbnail=\"${EXT_THUMB_PATH}/`echo $i | cut -b 3-`\""; fi
  if [[ ${NO_FULLSIZE} == "yes" ]]; then INCL+=">\n      <nofullsize /"; fi
  if [[ ${EXT_EXIF} == "yes" ]]; then INCL_AFTER+="      <metadata>\n        <external_exif src=\"${EXT_EXIF_PATH}/`echo ${i%.*}.exv | cut -b 3-`\" />\n      </metadata>\n"; fi
  echo -e "    <item src=\"`echo $i | cut -b 3-`\"${INCL}>\n      <title> </title>\n      <title_description> </title_description>\n${INCL_AFTER}    </item>\n";
done

cat << XML_FOOTER_STOP
  </items>
</gallery>
XML_FOOTER_STOP