#!/bin/sh

# Process new images.

rm -f /tmp/v1.jpeg

cd /var/local/slugcam/new

shopt -s nullglob
for i in *
do

  # Convert the uploaded single-frame MPEG to a JPEG image
  ffmpeg -i $i -sameq -deinterlace -vframes 1 /tmp/v%d.jpeg 2> /tmp/ffmpeg.out
  if grep -q 'invalid mb type' /tmp/ffmpeg.out
  then
    echo "$i bad (invalid mb type)"
    mv $i ../bad
    rm -f /tmp/v1.jpeg
    continue
  fi
  if [ ! -f /tmp/v1.jpeg ]
  then
    echo "$i bad (no file output)"
    mv $i ../bad
    continue
  fi

  # Add the timestamp
  timestamp=`basename $i .mpeg`
  mogrify -fill cyan -pointsize 30 -annotate 0,0,20,30 $timestamp /tmp/v1.jpeg

  # Save it in the jpegs directory
  mv /tmp/v1.jpeg ../jpegs/$timestamp.jpeg

  # Update the "latest" symlink
  ln -f -s $timestamp.jpeg ../jpegs/latest.jpeg

  # Remove the uploaded mpeg
  # rm $i
  mv $i ../new_bak

done