#!/bin/bash

#
# Copyright (c) 2017-2018 Samuel Thibault <samuel.thibault@ens-lyon.org>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# 

# Make sure we have enough options
if [ $# != 5 -a $# != 6 ]; then
  echo "ERROR: $0 jobid user name nb options [filename]" >&2
  exit 1
fi

NB=$4
OPTIONS=$5
FILE=$6

OUTPUT_FORMAT=brf

case $0 in
  *vectortoubrl*) OUTPUT_FORMAT=ubrl ;;
esac

. /usr/share/cups/braille/cups-braille.sh

checkTool convert imagemagick "embossing images"

NEGATE=$(getOption Negate)
case "$NEGATE" in
  True|true)  NEGATE=-negate ;;
  False|false) NEGATE= ;;
  *)
    printf "ERROR: Option Negate must either True or False, got '%s'\n" "$NEGATE" >&2
    exit 1
    ;;
esac

PAGE="-page ${TOTALGRAPHICWIDTH}x${TOTALGRAPHICHEIGHT}+${GRAPHICHOFFSET}+${GRAPHICVOFFSET}"

GS_CALL="gs -q -dDEVICEWIDTHPOINTS=${GRAPHICWIDTH} -dDEVICEHEIGHTPOINTS=${GRAPHICHEIGHT} -noantialias -dTextAlphaBits=1 -dGraphicsAlphaBits=1 -dSAFER -dBATCH -dNOPAUSE -sDEVICE=pngmono -dFitPage -r72 -sOutputFile=-"
RENDER_CALL="convert $NEGATE $PAGE -flatten - $OUTPUT_FORMAT:-"

# Now proceeed
echo "INFO: Converting image" 1>&2
if [ -z "$FILE" ]
then
  printf "DEBUG: Calling %s and %s from stdin\n" "$GS_CALL" "$RENDER_CALL" 1>&2
  $GS_CALL - | sed -e '/-noantialias/d' | $RENDER_CALL | sed -e '/^\(Width\|X\|Y\): [0-9]*$/,/^$/d' | addmargins
else
  printf "DEBUG: Calling %s and %s on '%s'\n" "$GS_CALL" "$RENDER_CALL" "$FILE" 1>&2
  $GS_CALL "$FILE" | sed -e '/-noantialias/d' | $RENDER_CALL | sed -e '/^\(Width\|X\|Y\): [0-9]*$/,/^$/d' | addmargins
fi
echo "INFO: Ready" >&2