{ stdenv, mkXPlaneAddon }:

mkXPlaneAddon rec {
  pname = "vivid-sky";
  version = "1.1";

  fname = "Vivid_Sky.zip";
  sha256 = "17x66qsd9ycw1bcp5avh592yqcrlgwzkcx2ly4cqi10504gs1rdx";
  forumlink = "https://forums.x-plane.org/index.php?/files/file/48315-vivid-sky/";
  buildCommand = ''
    mkdir -p $out
    unzip $src '1. Vivid Sky/Resources/*' '2. Vivid Water (Optional)/*'
    mv '1. Vivid Sky/Resources' $out
    cp -r '2. Vivid Water (Optional)/Resources' $out
  '';

  passthru = {
    build = ''
      ln -s $ADDONPATH $out/xplane-extra/vivid-sky
    '';
    prepare = ''
      mv "$XPLANEPATH/Resources/bitmaps/skycolors" "$XPLANEPATH/Resources/bitmaps/skycolors.orig"
      mv "$XPLANEPATH/Resources/bitmaps/world/clouds" "$XPLANEPATH/Resources/bitmaps/world/clouds.orig"
      ln -s /xplane-extra/vivid-sky/Resources/bitmaps/skycolors "$XPLANEPATH/Resources/bitmaps/skycolors"
      ln -s /xplane-extra/vivid-sky/Resources/bitmaps/world/clouds "$XPLANEPATH/Resources/bitmaps/world/clouds"
      mkdir -p "$XPLANEPATH/Resources/plugins/FlyWithLua/Scripts"
      ln -sf /xplane-extra/vivid-sky/Resources/plugins/FlyWithLua/Scripts/vivid_sky.lua "$XPLANEPATH/Resources/plugins/FlyWithLua/Scripts/vivid_sky.lua"
      ln -sf /xplane-extra/vivid-sky/Resources/plugins/FlyWithLua/Scripts/vivid_water.lua "$XPLANEPATH/Resources/plugins/FlyWithLua/Scripts/vivid_water.lua"
    '';
    revert = ''
      for f in "$XPLANEPATH/Resources/bitmaps/skycolors" "$XPLANEPATH/Resources/bitmaps/world/clouds" ; do
        if [ -L "$f" ]; then
          rm "$f"
          mv "''${f}.orig" "$f"
        else
          false
        fi
      done
      for f in "$XPLANEPATH/Resources/plugins/FlyWithLua/Scripts/vivid_sky.lua" "$XPLANEPATH/Resources/plugins/FlyWithLua/Scripts/vivid_water.lua" ; do
        if [ -L "$f" ]; then
          rm "$f"
        else
          false
        fi
      done
    '';
  };
}