#!/bin/sh

base_dir="$(dirname $(readlink -f "$0") )"
version="2.3.2-1"
pkg_name="unityhub"
pkg_folder="$base_dir/$pkg_name-package"

# Downloading package files
pkg_url="https://public-cdn.cloud.unity3d.com/hub/prod/UnityHub.AppImage"
echo "Downloading sources..."
wget "$pkg_url" -O "$base_dir/unityhub-${version}.AppImage"

echo "Extracting files..."
chmod +x "unityhub-${version}.AppImage"
"./unityhub-${version}.AppImage" --appimage-extract
chmod 775 "$base_dir/squashfs-root"

echo "Preparing package config..."
mkdir -p "$pkg_folder/opt"
mkdir -p "$pkg_folder/usr/share/pixmaps"
mkdir -p "$pkg_folder/usr/share/applications"
cp -r "$base_dir/DEBIAN" "$pkg_folder"

echo "Copying package files..."
cp "$base_dir/squashfs-root/unityhub.png" "$pkg_folder/usr/share/pixmaps"
cp "$base_dir/squashfs-root/unityhub.desktop" "$pkg_folder/usr/share/applications"
mv "$base_dir/squashfs-root" "$pkg_folder/opt/unityhub"

sed -i "s/Version:.*/Version: $version-1/g" "$pkg_folder/DEBIAN/control"
sed -i "s/version=\".*\"/version=\"$version\"/g" "$pkg_folder/DEBIAN/postinst"
sed -i "s/Exec=AppRun/Exec=unityhub \%u/g" "$pkg_folder/usr/share/applications/unityhub.desktop"
sed -i "s/^SCRIPT_DIR.*$/SCRIPT_DIR=\"\/opt\/unityhub\"/g" "$pkg_folder/opt/unityhub/unityhub"

chmod 755 -R "$pkg_folder/opt/unityhub/resources"

rm -r "$pkg_folder/opt/unityhub/AppRun" \
      "$pkg_folder/opt/unityhub/unityhub.desktop" \
      "$pkg_folder/opt/unityhub/usr/share" \
      "$pkg_folder"/opt/unityhub/LICENSE*

# Building .deb file
echo "Building package..."
cd "$base_dir"
fakeroot dpkg-deb --build "$pkg_folder"
echo "done."