#!/usr/bin/env bash
set -e

export LD_LIBRARY_PATH="build/lib:$LD_LIBRARY_PATH"
[ -z "$QMAKE" ] && export QMAKE=/usr/lib/qt6/bin/qmake

# Sets a directory that has to have a following structure:
# build
# ├── bin
# │   ├── isle
# │   └── isle-config
# └── lib
#     ├── liblego1.so
#     ├── libSDL3.so -> libSDL3.so.0        # Not important if available on the system
#     ├── libSDL3.so.0 -> libSDL3.so.0.3.0  # Not important if available on the system
#     └── libSDL3.so.0.3.0                  # Not important if available on the system
# Can also be defined using --build=path
BUILD_SOURCE=../../build

# Sets where AppRun for AppImage is, can also be defined using --apprun=path
APPRUN_SOURCE=AppRun

# Sets where desktop file for AppImage is, can also be defined using --desktop-file=path
DESKTOP_FILE_SOURCE=isle-portable.desktop

cd $(dirname $0)

clean(){
    rm -rf assets tools build AppDir "./LEGO_Island-$(uname -m).AppImage"
}

download(){
    if [ ! -e "$1" ]; then
        curl -Lo "$1" "$2"
    fi
}

prepare(){
    mkdir -p tools
    mkdir -p assets

    download tools/appimagetool.AppImage https://github.com/AppImage/appimagetool/releases/download/continuous/appimagetool-$(uname -m).AppImage
    chmod u+x tools/appimagetool.AppImage

    download tools/linuxdeploy.AppImage https://github.com/linuxdeploy/linuxdeploy/releases/latest/download/linuxdeploy-$(uname -m).AppImage
    chmod u+x tools/linuxdeploy.AppImage

    download tools/linuxdeploy-plugin-qt.AppImage https://github.com/linuxdeploy/linuxdeploy-plugin-qt/releases/latest/download/linuxdeploy-plugin-qt-$(uname -m).AppImage
    chmod u+x tools/linuxdeploy-plugin-qt.AppImage

    download assets/isle.png https://github.com/isledecomp/isle/blob/master/assets/isle.png?raw=true
    magick assets/isle.png -resize 256x256 assets/isle.png
    download assets/isle-config.png https://github.com/isledecomp/isle/blob/master/assets/config.png?raw=true
    magick assets/isle-config.png -resize 256x256 assets/isle-config.png

    if [ ! -f "assets/isle-portable.desktop" ]; then
        cp $DESKTOP_FILE_SOURCE assets/isle-portable.desktop
        cp $APPRUN_SOURCE assets/AppRun
    fi

    if [ ! -d "build" ]; then
        cp -r $BUILD_SOURCE build
    fi
}

compile(){

    NO_STRIP=1 tools/linuxdeploy.AppImage \
        --plugin qt \
        -e build/bin/isle \
        -e build/bin/isle-config \
        -d assets/isle-portable.desktop \
        -i assets/isle.png \
        -i assets/isle-config.png \
        --custom-apprun=AppRun \
        --appdir=AppDir
}

package(){
    tools/appimagetool.AppImage AppDir "LEGO_Island-$(uname -m).AppImage"
}

stop(){ # Can be used to do `Build clean stop` to just clean the directory
    exit
}

for arg in "$@"; do
    case "$arg" in
        --build=*)          BUILD_SOURCE="${arg#--build=}";;
        --apprun=*)         APPRUN_SOURCE="${arg#--apprun=}";;
        --desktop-file=*)   DESKTOP_FILE_SOURCE="${arg#--desktop-file=}";;
        *)                  "$arg"
    esac
done

prepare
compile
package
# Symlinks named as binaries in appimage can call these binaries specifically
# ln -s "LEGO_Island-$(uname -m).AppImage" isle-config 
# ln -s "LEGO_Island-$(uname -m).AppImage" isle