#!/bin/bash
# OpenRA packaging script for Linux (AppImage)
set -e

command -v make >/dev/null 2>&1 || { echo >&2 "The OpenRA mod template requires make."; exit 1; }
command -v python3 >/dev/null 2>&1 || { echo >&2 "The OpenRA mod template requires python 3."; exit 1; }
command -v tar >/dev/null 2>&1 || { echo >&2 "The OpenRA mod template requires tar."; exit 1; }
command -v curl >/dev/null 2>&1 || command -v wget > /dev/null 2>&1 || { echo >&2 "The OpenRA mod template requires curl or wget."; exit 1; }

require_variables() {
	missing=""
	for i in "$@"; do
		eval check="\$$i"
		[ -z "${check}" ] && missing="${missing}   ${i}\n"
	done
	if [ ! -z "${missing}" ]; then
		echo "Required mod.config variables are missing:\n${missing}Repair your mod.config (or user.config) and try again."
		exit 1
	fi
}

if [ $# -eq "0" ]; then
	echo "Usage: `basename $0` version [outputdir]"
	exit 1
fi

PACKAGING_DIR=$(python3 -c "import os; print(os.path.dirname(os.path.realpath('$0')))")
TEMPLATE_ROOT="${PACKAGING_DIR}/../../"
ARTWORK_DIR="${PACKAGING_DIR}/../artwork/"

# shellcheck source=mod.config
. "${TEMPLATE_ROOT}/mod.config"

if [ -f "${TEMPLATE_ROOT}/user.config" ]; then
	# shellcheck source=user.config
	. "${TEMPLATE_ROOT}/user.config"
fi

require_variables "MOD_ID" "ENGINE_DIRECTORY" "PACKAGING_DISPLAY_NAME" "PACKAGING_INSTALLER_NAME" \
	"PACKAGING_APPIMAGE_DEPENDENCIES_TAG" "PACKAGING_APPIMAGE_DEPENDENCIES_SOURCE" "PACKAGING_APPIMAGE_DEPENDENCIES_TEMP_ARCHIVE_NAME" \
	"PACKAGING_FAQ_URL" "PACKAGING_OVERWRITE_MOD_VERSION"

TAG="$1"
if [ $# -eq "1" ]; then
	OUTPUTDIR=$(python3 -c "import os; print(os.path.realpath('.'))")
else
	OUTPUTDIR=$(python3 -c "import os; print(os.path.realpath('$2'))")
fi

BUILTDIR="${PACKAGING_DIR}/${PACKAGING_INSTALLER_NAME}.appdir"

# Set the working dir to the location of this script
cd "${PACKAGING_DIR}"

pushd "${TEMPLATE_ROOT}" > /dev/null

if [ ! -f "${ENGINE_DIRECTORY}/Makefile" ]; then
	echo "Required engine files not found."
	echo "Run \`make\` in the mod directory to fetch and build the required files, then try again.";
	exit 1
fi

if [ ! -d "${OUTPUTDIR}" ]; then
	echo "Output directory '${OUTPUTDIR}' does not exist.";
	exit 1
fi

echo "Building core files"

MOD_VERSION=$(grep 'Version:' mods/${MOD_ID}/mod.yaml | awk '{print $2}')

if [ "${PACKAGING_OVERWRITE_MOD_VERSION}" == "True" ]; then
    make version VERSION="${TAG}"
else
	echo "Mod version ${MOD_VERSION} will remain unchanged.";
fi

pushd "${ENGINE_DIRECTORY}" > /dev/null
make clean

# linux-dependencies target will trigger the lua detection script, which we don't want during packaging
make cli-dependencies
sed "s/@LIBLUA51@/liblua5.1.so.0/" thirdparty/Eluant.dll.config.in > Eluant.dll.config

make core
make version VERSION="${ENGINE_VERSION}"
make install-engine prefix="usr" DESTDIR="${BUILTDIR}/"
make install-common-mod-files prefix="usr" DESTDIR="${BUILTDIR}/"

for f in ${PACKAGING_COPY_ENGINE_FILES}; do
  mkdir -p "${BUILTDIR}/usr/lib/openra/$(dirname "${f}")"
  cp -r "${f}" "${BUILTDIR}/usr/lib/openra/${f}"
done

popd > /dev/null

echo "Building mod files"
make core
cp -Lr mods/* "${BUILTDIR}/usr/lib/openra/mods"

popd > /dev/null

# Add native libraries
echo "Downloading dependencies"
if command -v curl >/dev/null 2>&1; then
	curl -s -L -o "${PACKAGING_APPIMAGE_DEPENDENCIES_TEMP_ARCHIVE_NAME}" -O "${PACKAGING_APPIMAGE_DEPENDENCIES_SOURCE}" || exit 3
	curl -s -L -O https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage || exit 3
else
	wget -cq "${PACKAGING_APPIMAGE_DEPENDENCIES_SOURCE}" -O "${PACKAGING_APPIMAGE_DEPENDENCIES_TEMP_ARCHIVE_NAME}" || exit 3
	wget -cq https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage || exit 3
fi

tar xf "${PACKAGING_APPIMAGE_DEPENDENCIES_TEMP_ARCHIVE_NAME}"
chmod a+x appimagetool-x86_64.AppImage

echo "Building AppImage"

install -d "${BUILTDIR}/usr/bin"
install -d "${BUILTDIR}/etc/mono/4.5"
install -d "${BUILTDIR}/usr/lib/mono/4.5"

install -Dm 0755 usr/bin/mono "${BUILTDIR}/usr/bin/"

install -Dm 0644 /etc/mono/config "${BUILTDIR}/etc/mono/"
install -Dm 0644 /etc/mono/4.5/machine.config "${BUILTDIR}/etc/mono/4.5"

for f in $(ls usr/lib/mono/4.5/*.dll usr/lib/mono/4.5/*.exe); do install -Dm 0644 "$f" "${BUILTDIR}/usr/lib/mono/4.5/"; done
for f in $(ls usr/lib/*.so usr/lib/*.so.*); do install -Dm 0755 "$f" "${BUILTDIR}/usr/lib/"; done

rm -rf libs libs.tar.bz2

# Add launcher and icons
sed "s/{MODID}/${MOD_ID}/g" include/AppRun.in | sed "s/{MODNAME}/${PACKAGING_DISPLAY_NAME}/g" > AppRun.temp
install -m 0755 AppRun.temp "${BUILTDIR}/AppRun"

sed "s/{MODID}/${MOD_ID}/g" include/mod.desktop.in | sed "s/{MODNAME}/${PACKAGING_DISPLAY_NAME}/g" | sed "s/{TAG}/${TAG}/g" > temp.desktop
install -Dm 0755 temp.desktop "${BUILTDIR}/usr/share/applications/openra-${MOD_ID}.desktop"
install -m 0755 temp.desktop "${BUILTDIR}/openra-${MOD_ID}.desktop"

sed "s/{MODID}/${MOD_ID}/g" include/mod-mimeinfo.xml.in | sed "s/{TAG}/${TAG}/g" > temp.xml
install -Dm 0755 temp.xml "${BUILTDIR}/usr/share/mime/packages/openra-${MOD_ID}.xml"

if [ -f "${PACKAGING_DIR}/mod_scalable.svg" ]; then
  install -Dm644 "${PACKAGING_DIR}/mod_scalable.svg" "${BUILTDIR}/usr/share/icons/hicolor/scalable/apps/openra-${MOD_ID}.svg"
fi

for i in 16x16 32x32 48x48 64x64 128x128 256x256 512x512 1024x1024; do
  if [ -f "${ARTWORK_DIR}/icon_${i}.png" ]; then
    install -Dm644 "${ARTWORK_DIR}/icon_${i}.png" "${BUILTDIR}/usr/share/icons/hicolor/${i}/apps/openra-${MOD_ID}.png"
    install -m644 "${ARTWORK_DIR}/icon_${i}.png" "${BUILTDIR}/openra-${MOD_ID}.png"
  fi
done

install -d "${BUILTDIR}/usr/bin"

sed "s/{MODID}/${MOD_ID}/g" include/mod.in | sed "s/{TAG}/${TAG}/g" | sed "s/{MODNAME}/${PACKAGING_DISPLAY_NAME}/g" | sed "s/{MODINSTALLERNAME}/${PACKAGING_INSTALLER_NAME}/g" | sed "s|{MODFAQURL}|${PACKAGING_FAQ_URL}|g" > openra-mod.temp
install -m 0755 openra-mod.temp "${BUILTDIR}/usr/bin/openra-${MOD_ID}"

sed "s/{MODID}/${MOD_ID}/g" include/mod-server.in  > openra-mod-server.temp
install -m 0755 openra-mod-server.temp "${BUILTDIR}/usr/bin/openra-${MOD_ID}-server"

sed "s/{MODID}/${MOD_ID}/g" include/mod-utility.in  > openra-mod-utility.temp
install -m 0755 openra-mod-utility.temp "${BUILTDIR}/usr/bin/openra-${MOD_ID}-utility"

install -m 0755 include/gtk-dialog.py "${BUILTDIR}/usr/bin/gtk-dialog.py"

# travis-ci doesn't support mounting FUSE filesystems so extract and run the contents manually
./appimagetool-x86_64.AppImage --appimage-extract
ARCH=x86_64 ./squashfs-root/AppRun "${BUILTDIR}" "${OUTPUTDIR}/${PACKAGING_INSTALLER_NAME}-${TAG}-x86_64.AppImage"

# Clean up
rm -rf openra-mod.temp openra-mod-server.temp openra-mod-utility.temp temp.desktop temp.xml AppRun.temp appimagetool-x86_64.AppImage squashfs-root "${PACKAGING_APPIMAGE_DEPENDENCIES_TEMP_ARCHIVE_NAME}" "${BUILTDIR}"