#!/usr/bin/env bash
set -eux
shopt -s nullglob
cd "${0%/*}"
for dir in \
  Rosetta/ReadingSpec/
do
  find -H "$dir" -not -name "*.compressed.pdf" -type f -name "*.pdf" -printf "%p\n" |
  while IFS= read -r src; do
    dst="${src%.pdf}".compressed.pdf
    if test "$src" -nt "$dst"; then
      ps2pdf \
        -dPDFSETTINGS="/default" \
        -dDownsampleGrayImages=false\
        -dAutoRotatePages=/None \
        -dColorImageResolution=600 \
        -dColorImageDownsampleType=/Bicubic \
        "$src" \
        "$dst"
      rm "$src"
    fi
  done
       #-dEncodeColorImages=false \
       #-dAutoFilterColorImages=false \
       #-dColorImageFilter=/FlateEncode \
done