#! /bin/bash

INKSCAPE="/usr/bin/inkscape"
OPTIPNG="/usr/bin/optipng"

REPO_DIR=$(cd $(dirname $0) && pwd)
ASRC_DIR=${REPO_DIR}/src/assets

# check command avalibility
has_command() {
  "$1" -v $1 > /dev/null 2>&1
}

if [ ! "$(which inkscape 2> /dev/null)" ]; then
  echo inkscape and optipng needs to be installed to generate the assets.
  if has_command zypper; then
    sudo zypper in inkscape optipng
  elif has_command apt; then
    sudo apt install inkscape optipng
  elif has_command dnf; then
    sudo dnf install -y inkscape optipng
  elif has_command yum; then
    sudo yum install inkscape optipng
  elif has_command pacman; then
    sudo pacman -S --noconfirm inkscape optipng
  fi
fi

render_thumbnail() {
  local dest=$1
  local color=$2

  if [ -f $ASRC_DIR/$1/thumbnail$2.png ]; then
    echo $ASRC_DIR/$1/thumbnail$2.png exists.
  else
    echo
    echo Rendering $ASRC_DIR/$1/thumbnail$2.png
    $INKSCAPE --export-id=thumbnail$2 \
              --export-id-only \
              --export-type=png $ASRC_DIR/$1/thumbnail$2.png $ASRC_DIR/$1/thumbnail.svg >/dev/null \
    || $INKSCAPE --export-id=thumbnail$2 \
                 --export-id-only \
                 --export-png=$ASRC_DIR/$1/thumbnail$2.png $ASRC_DIR/$1/thumbnail.svg >/dev/null \
    && $OPTIPNG -o7 --quiet $ASRC_DIR/$1/thumbnail$2.png
  fi
}

for color in '-light' '-dark' ; do
  render_thumbnail "${dest:-cinnamon}" "${color}"
  render_thumbnail "${dest:-gtk-3.0}" "${color}"
  render_thumbnail "${dest:-metacity-1}" "${color}"
done

echo Rendering gtk-2.0 assets
cd $ASRC_DIR/gtk-2.0 && ./render-assets.sh

echo Rendering gtk-3.0 assets
cd $ASRC_DIR/gtk-3.0/common-assets && ./render-assets.sh
cd $ASRC_DIR/gtk-3.0/windows-assets && ./render-assets.sh && ./render-alt-assets.sh

echo Rendering metacity-1 assets
cd $ASRC_DIR/metacity-1 && ./render-assets.sh

echo Rendering xfwm4 assets
cd $ASRC_DIR/xfwm4 && ./render-assets.sh

exit 0