generate-pngs

#!/bin/bash

export inkscape=/Applications/Inkscape.app/Contents/MacOS/inkscape
if ! [ -e "$inkscape" ]; then
	echo 1>&2 "'$inkscape' is not an executable file."
  exit 2
fi

asset_dir="app/assets/images"
cd "$asset_dir" || {
	echo 1>&2 "Unable to cd to asset directory '$asset_dir'."
  exit 5
}

source=archyve.svg
if ! [ -f "$source" ]; then
	echo 1>&2 "Source image '$source' does not exist."
  exit 4
fi

# sizes
for size in 16 32 64 128 256 512; do
  echo "$0: Generating $size"x"$size PNG of '$source'..."

  $inkscape -w $size -h $size "$source" -o archyve-"$size"x"$size".png || {
		echo 1>&2 "$0: failed to generate png; aborting..."
		exit 3
  }
done

# favicon
echo "$0: generating 144x144 favicon..."
$inkscape -w 144 -h 144 "$source" -o favicon.png || {
  echo 1>&2 "$0: failed to generate png; aborting..."
  exit 6
}

# apple touch icon
echo "$0: generating 180x180 apple touch icon..."
$inkscape -w 180 -h 180 "$source" -o apple-touch-icon.png || {
  echo 1>&2 "$0: failed to generate apple touch icon; aborting..."
  exit 7
}

echo 1>&2 "$0: Done."