- mimes: [application/pdf]
  commands:
    # evince is more than three times faster than convert and installed on many machines
    - evince-thumbnailer -s %(size)s "%(file)s" %(outfile)s
    - convert -thumbnail %(size)sx%(size)s -background white %(file)s[0] PNG:%(outfile)s
  meta:
    'Thumb::Document::Pages':
      - |
        which exiftool || exit 1
        exiftool "%(file)s" | awk '/^Page Count/ {print $4}' | sed 's/[^0-9]*//g'
      - |
        which pdfinfo || exit 1
        pdfinfo "%(file)s" | awk '/^Pages:/ {print $2}' | sed 's/[^0-9]*//g'
      - | 
        which gs || exit 1
        gs -o /dev/null -sDEVICE=bbox "%(file)s" 2>&1 | grep HiResBoundingBox | wc -l
  revision: 1


- mimes: [application/postscript]
  commands:
    - evince-thumbnailer -s %(size)s "%(file)s" %(outfile)s
    - convert -thumbnail %(size)sx%(size)s -background white %(file)s[0] PNG:%(outfile)s
  meta:
    'Thumb::Document::Pages':
      - | 
        which exiftool || exit 1
        exiftool "%(file)s" | awk '/^Pages/ {print $3}' | sed 's/[^0-9]*//g'
      - |
        which gs || exit 1
        gs -o /dev/null -sDEVICE=bbox "%(file)s" 2>&1 | grep HiResBoundingBox | wc -l
  revision: 1


- mimes:
  - image/svg+xml
  commands:
    - |
      which inkscape || exit 1
      w=$(inkscape -W "%(file)s" | sed 's/\..*//')
      h=$(inkscape -H "%(file)s" | sed 's/\..*//')
      test $w -gt $h && size_arg="-w %(size)s" || size_arg="-h %(size)s"
      inkscape --export-area-page --export-type=png $size_arg -o "%(tmpdir)s/outfile.png" "%(file)s" && \
        mv "%(tmpdir)s/outfile.png" "%(outfile)s"
    - |
      convert -background none -resize %(size)sx%(size)s "%(file)s" "%(tmpdir)s/outfile.png" && \
        mv "%(tmpdir)s/outfile.png" "%(outfile)s"


- mimes:
  - "application/x-matroska"
  - "application/x-riff"
  - "application/vnd.ms-asf"
  - "video/x-matroska"
  - "video/mp4"
  - "video/ogg"
  - "video/webm"
  - "video/mpeg"
  - "video/avi"
  - "video/vnd.avi"
  commands:
    # Note: A “fps=1/x” option like `ffmpeg -nostdin -i input.mkv -vf "fps=1/$fraction, thumbnail" -vframes:v $number -fps_mode vfr thumb_%02d.png` 
    # takes very very long and is no option here.
    - |
      which ffmpeg || exit 1
      which ffprobe || exit 1
      which magick || exit 1
      which bc || exit 1
      cd %(tmpdir)s
      duration=$(ffprobe -i "%(file)s" -show_entries format=duration -v quiet -of csv="p=0")
      if test "%(size)s" -gt 500; then
        number=4 
        fraction=$(echo "$duration / $number" | bc)
        test "$duration" -gt "16" && f1=3 || f1=0
        f2=$fraction
        f3=$(echo "$fraction * 2" | bc)
        f4=$(echo "$fraction * 3" | bc)
        ffmpeg -ss "$f1" -nostdin -i "%(file)s" -vf "thumbnail" -frames:v 1 t1.png
        ffmpeg -ss "$f2" -nostdin -i "%(file)s" -vf "thumbnail" -frames:v 1 t2.png
        ffmpeg -ss "$f3" -nostdin -i "%(file)s" -vf "thumbnail" -frames:v 1 t3.png
        ffmpeg -ss "$f4" -nostdin -i "%(file)s" -vf "thumbnail" -frames:v 1 t4.png
        magick montage t1.png t2.png t3.png t4.png -background 'transparent' -geometry +2+2 result.png
      else
        fraction=$(echo "$duration / 10" | bc)
        ffmpeg -ss "$fraction" -nostdin -i "%(file)s" -vf "thumbnail" -frames:v 1 result.png
      fi
      mv result.png %(outfile)s
    - |
      ffmpeg -ss 3 -nostdin -i "%(file)s" -vf "thumbnail" -frames:v 1 result.png && \
      mv result.png %(outfile)s
  meta:
    'Thumb::Movie::Length':
      - ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 "%(file)s"
      - |
        which mediainfo || exit 1
        which bc || exit 1
        duration=$(mediainfo --Inform="General;%Duration%" "%(file)s")
        echo "$duration / 1000" | bc
      - |
        which exiftool || exit 1
        which bc || exit 1
        output=$(exiftool -duration# "%(file)s")
        time=$(echo $output | sed 's/^[^:]*: //')
        IFS=: read hours minutes seconds <<< "$time"
        echo "$hours * 3600 + $minutes * 60 + $seconds" | bc
  revision: 1