CHROME_URL=https://dl.google.com/linux/direct/google-chrome-stable_current_x86_64.rpm
CHROME_SHA256=bf2d446b42520b00f9a3ec3763c8c3c33632db7c2385270dc4dfb3e5401371b8
PEPFLASH_MD5=6ecdee7d08b0419018976fddd39c4524
MANIFEST_MD5=90dd5fdb0f6e75cb7a3476b57e3a04e2

DIR=/usr/lib/PepperFlash
TMP_DIR=/tmp/pepperflashplugin-installer

pepperflashplugin-installer() {
  [ -d $TMP_DIR ] && rm -rf $TMP_DIR
  mkdir $TMP_DIR
  cd $TMP_DIR
  
  # Don't download a new Google Chrome package if the user already has
  # identical plugin/manifest files installed

  echo "$PEPFLASH_MD5  $DIR/libpepflashplayer.so
  $MANIFEST_MD5  $DIR/manifest.json" > md5sums.check

  if md5sum -c md5sums.check
  then
          echo "nothing to do, you are already using the latest pepperflash plugin provided by Chakra"
  else
          wget $CHROME_URL
          rpm2cpio google-chrome*| bsdtar -xf -

          cp opt/google/chrome/PepperFlash/libpepflashplayer.so $DIR/libpepflashplayer.so
          cp opt/google/chrome/PepperFlash/manifest.json $DIR/manifest.json
  fi
}

instructions() {

  /bin/cat << EOF
MAKING CHROMIUM USE PEPPER FLASH
To enable the use of Pepper Flash with Chromium, append the following line
to /etc/chromium/default:

    . /usr/lib/PepperFlash/chromium_pepperflashplayer.sh

(I.e. a period, then a space, then the filepath.)
Restart Chromium, and load the chrome://plugins page to verify that the plugin is active.
EOF

}

post_install() {
    post_upgrade
    instructions
}

post_upgrade() {
    pepperflashplugin-installer
}

pre_remove() {
    rm $DIR/libpepflashplayer.so
    rm $DIR/manifest.json
}