#!/bin/sh

USAGE='Usage: brewview [options] <image-files>

  Image-file viewing and favorites-file database handling.

  Depends on qiv (with options -m -t -f -i).

  Copyright © Daniel Ljunggren <foto@demulsion.se>. Feb 2008.

[options]:
  -s <filename>   : Save to database-file (default: favorites.db or stars.db).
  -f <filenames>  : Show images from .db-files.
  -e <filename>   : Show images from and edit the same .db-file (overrides -s).
  -x <value>      : Generate db-file for image-files where Rating metatag is
                    higher than value.

'

FAVORITES_FILE="favorites.db"
STARS_FILE="stars.db"
QIV_PARAM=""
QIV_PATH=/usr/bin/qiv

strstr() {
  [ "${1#*$2*}" = "$1" ] && return 1
  return 0
}

while [ $# -gt 0 ] 
  do
  case "$1" in 
      
      -S)
	  QIV_PARAM="${QIV_PARAM} -S"
	  shift 1
	  ;;
      

      -s)
	  FAVORITES_FILE="$2"
	  STARS_FILE="$2"
	  shift 2
	  ;;
      
      -f)
	  shift 1
	  if [ -e favorites.tmp ] ; then
	      echo "favorites.tmp exist!" 1>&2
	      exit 2
	  fi    
	  for FILE 
	    do
	    DIR=`dirname $FILE`/
	    if [ $DIR == "./" ] ; then
		DIR=""
	    fi
	    BASE=`basename $FILE`
	    
	    cat $FILE | while read line ;
	      do 
	      DIRLINE=`dirname $line`/
	      BASELINE=`basename $line`
	      if [ $DIRLINE == "./" ] ; then
		  DIRLINE=""
	      fi
	      echo $DIR$DIRLINE$BASELINE >> favorites.tmp ;
	    done
	  done
	  export FAVORITES_FILE
	  sort favorites.tmp -u -o favorites.tmp
	  ${QIV_PATH} -R -m -t -f -i -e -l -d 12 ${QIV_PARAM} -F favorites.tmp
	  rm favorites.tmp
	  exit 0
	  ;;
      
      -e)
	  shift 1
	  
	  for FILE 
	    do
	    DIR=`dirname $FILE`
	    BASE=`basename $FILE`
	    
	    FAVORITES_FILE=$BASE
	    export FAVORITES_FILE
	    
	    CURRENTDIR=`pwd`
	    cd $DIR
	    ${QIV_PATH} -R -m -t -f -i -e -l -d 12 ${QIV_PARAM} -F $BASE
	    cd $CURRENTDIR
	  done
	  break
	  ;;
      
      -x)
	  shift 1

	  if [ -z $1 ] ; then
	      echo "No images selected..." 1>&2
	      exit 2
	  fi  

	  LEVEL=1
	  OPT=$1
	  if [ $OPT == [digit] ]; then
		  LEVEL=$OPT
		  shift 1
	  fi

	  if [ -e ${STARS_FILE} ] ; then
	      echo "brewview: Warning: regenerating ${STARS_FILE}. A backup copy is saved to ${STARS_FILE}.bak..." 1>&2
	      mv -f "${STARS_FILE}" "${STARS_FILE}.bak"
	      rm -f ${STARS_FILE}
	  fi

	  for FILE 
	    do
	    #Based on IPTC tag UserComment created in qiv-command.
	    #STARS=`exiftool -UserComment ${FILE} | cut -b35-`
	    #if [ "${STARS}" = "***" ]; then
	    #   echo "Adding ${FILE}"
	    #	echo ${FILE} >> ${STARS_FILE} ;
	    #fi

	    #Based on IPTC tag 'Urgency' created by digikam.
	    #RATE=`exiftool -Urgency ${FILE} | cut -b35-`
	    RATE=`exiftool -Rating ${FILE} | cut -b35-`
	    if [ ! -z ${RATE} ] && [ ${RATE} -ge ${LEVEL} ]; then
		echo "Adding ${FILE} with level ${RATE}"
		echo ${FILE} >> ${STARS_FILE} ;
	    fi

	  done
	  if [ -e ${STARS_FILE} ] ; then
	      sort ${STARS_FILE} -u -o ${STARS_FILE}
	      echo "brewview: ${STARS_FILE} generated; view with 'brewview -f ${STARS_FILE}'"
	  else
	      echo "brewview: ${STARS_FILE} not generated, found no tags marked for images"
	  fi
	  exit 0
	  ;;  

      -h)
	  echo "$USAGE" 1>&2
	  exit 2
	  ;;    
      *)
	  export FAVORITES_FILE
	  ${QIV_PATH} -m -t -f -i -e -l ${QIV_PARAM} $*
	  exit 0
	  ;;
  esac
done