#!/bin/bash

export ROOT=`pwd`
export NCORES=`nproc --all`
export CMAKE_BUILD_PARALLEL_LEVEL=${NCORES}
FOUND_GTK2=$(dpkg -l libgtk* | grep gtk2)
FOUND_GTK3=$(dpkg -l libgtk* | grep gtk-3)

set -e # exit on first error

function check_available_memory_and_disk() {
    FREE_MEM_GB=$(free -g -t | grep 'Mem:' | rev | cut -d" " -f1 | rev)
    MIN_MEM_GB=10

    FREE_DISK_KB=$(df -k . | tail -1 | awk '{print $4}')
    MIN_DISK_KB=$((10 * 1024 * 1024))

    if [ ${FREE_MEM_GB} -le ${MIN_MEM_GB} ]; then
        echo -e "\nERROR: GalaxySlicer Builder requires at least ${MIN_MEM_GB}G of 'available' mem (systen has only ${FREE_MEM_GB}G available)"
        echo && free -h && echo
        exit 2
    fi

    if [[ ${FREE_DISK_KB} -le ${MIN_DISK_KB} ]]; then 
        echo -e "\nERROR: GalaxySlicer Builder requires at least $(echo $MIN_DISK_KB |awk '{ printf "%.1fG\n", $1/1024/1024; }') (systen has only $(echo ${FREE_DISK_KB} | awk '{ printf "%.1fG\n", $1/1024/1024; }') disk free)"
        echo && df -h . && echo
        exit 1
    fi
}

function usage() {
    echo "Usage: ./BuildLinux.sh [-i][-u][-d][-s][-b][-g]"
    echo "   -i: Generate appimage (optional)"
    echo "   -g: force gtk2 build"
    echo "   -b: build in debug mode"
    echo "   -d: build deps (optional)"
    echo "   -s: build galaxy-slicer (optional)"
    echo "   -u: only update clock & dependency packets (optional and need sudo)"
    echo "   -r: skip free ram check (low ram compiling)"
    echo "For a first use, you want to 'sudo ./BuildLinux.sh -u'"
    echo "   and then './BuildLinux.sh -dsi'"
}

unset name
while getopts ":dsiuhgbr" opt; do
  case ${opt} in
    u )
        UPDATE_LIB="1"
        ;;
    i )
        BUILD_IMAGE="1"
        ;;
    d )
        BUILD_DEPS="1"
        ;;
    s )
        BUILD_ORCA="1"
        ;;
    b )
        BUILD_DEBUG="1"
        ;;
    g )
        FOUND_GTK3=""
        ;;
    r )
	SKIP_RAM_CHECK="1"
	;;
    h ) usage
        exit 0
        ;;
  esac
done

if [ $OPTIND -eq 1 ]
then
    usage
    exit 0
fi

# Addtional Dev packages for GalaxySlicer
export REQUIRED_DEV_PACKAGES="libmspack-dev libgstreamerd-3-dev libsecret-1-dev libwebkit2gtk-4.0-dev libosmesa6-dev libssl-dev libcurl4-openssl-dev eglexternalplatform-dev libudev-dev libdbus-1-dev extra-cmake-modules texinfo"
# libwebkit2gtk-4.1-dev ??
export DEV_PACKAGES_COUNT=$(echo ${REQUIRED_DEV_PACKAGES} | wc -w)
if [ $(dpkg --get-selections | grep -E "$(echo ${REQUIRED_DEV_PACKAGES} | tr ' ' '|')" | wc -l) -lt ${DEV_PACKAGES_COUNT} ]; then
    sudo apt install -y ${REQUIRED_DEV_PACKAGES} git cmake wget file
fi

#FIXME: require root for -u option
if [[ -n "$UPDATE_LIB" ]]
then
    echo -n -e "Updating linux ...\n"
    # hwclock -s # DeftDawg: Why does SuperSlicer want to do this?
    apt update
    if [[ -z "$FOUND_GTK3" ]]
    then
        echo -e "\nInstalling: libgtk2.0-dev libglew-dev libudev-dev libdbus-1-dev cmake git\n"
        apt install -y libgtk2.0-dev libglew-dev libudev-dev libdbus-1-dev cmake git
    else
        echo -e "\nFind libgtk-3, installing: libgtk-3-dev libglew-dev libudev-dev libdbus-1-dev cmake git\n"
        apt install -y libgtk-3-dev libglew-dev libudev-dev libdbus-1-dev cmake git
    fi
    # for ubuntu 22+ and 23+:
    ubu_major_version="$(grep VERSION_ID /etc/os-release | cut -d "=" -f 2 | cut -d "." -f 1 | tr -d /\"/)"
    if [ $ubu_major_version == "22" ] || [ $ubu_major_version == "23" ]
    then
        apt install -y curl libfuse-dev libssl-dev libcurl4-openssl-dev m4
    fi
    if [[ -n "$BUILD_DEBUG" ]]
    then
        echo -e "\nInstalling: libssl-dev libcurl4-openssl-dev\n"
        apt install -y libssl-dev libcurl4-openssl-dev
    fi
    echo -e "done\n"
    exit 0
fi

FOUND_GTK2_DEV=$(dpkg -l libgtk* | grep gtk2.0-dev || echo '')
FOUND_GTK3_DEV=$(dpkg -l libgtk* | grep gtk-3-dev || echo '')
echo "FOUND_GTK2=$FOUND_GTK2)"
if [[ -z "$FOUND_GTK2_DEV" ]]
then
if [[ -z "$FOUND_GTK3_DEV" ]]
then
    echo "Error, you must install the dependencies before."
    echo "Use option -u with sudo"
    exit 0
fi
fi

echo "[1/9] Updating submodules..."
{
    # update submodule profiles
    pushd resources/profiles
    git submodule update --init
    popd
}

echo "[2/9] Changing date in version..."
{
    # change date in version
    sed -i "s/+UNKNOWN/_$(date '+%F')/" version.inc
}
echo "done"

# mkdir in deps
if [ ! -d "deps/build" ]
then
    mkdir deps/build
fi

if ! [[ -n "$SKIP_RAM_CHECK" ]]
then
check_available_memory_and_disk
fi

if [[ -n "$BUILD_DEPS" ]]
then
    echo "[3/9] Configuring dependencies..."
    BUILD_ARGS=""
    if [[ -n "$FOUND_GTK3_DEV" ]]
    then
        BUILD_ARGS="-DDEP_WX_GTK3=ON"
    fi
    if [[ -n "$BUILD_DEBUG" ]]
    then
        # have to build deps with debug & release or the cmake won't find evrything it needs
        mkdir deps/build/release
        pushd deps/build/release
            cmake ../.. -DDESTDIR="../destdir" $BUILD_ARGS
            make -j$NCORES
        popd
        BUILD_ARGS="${BUILD_ARGS} -DCMAKE_BUILD_TYPE=Debug"
    fi
    
    # cmake deps
    pushd deps/build
        cmake .. $BUILD_ARGS
        echo "done"
        
        # make deps
        echo "[4/9] Building dependencies..."
        make -j$NCORES
        echo "done"

        # rename wxscintilla # TODO: DeftDawg: Does GalaxySlicer need this?
        # echo "[5/9] Renaming wxscintilla library..."
        # pushd destdir/usr/local/lib
        #     if [[ -z "$FOUND_GTK3_DEV" ]]
        #     then
        #         cp libwxscintilla-3.1.a libwx_gtk2u_scintilla-3.1.a
        #     else
        #         cp libwxscintilla-3.1.a libwx_gtk3u_scintilla-3.1.a
        #     fi
        # popd
        # echo "done"

        # FIXME: only clean deps if compiling succeeds; otherwise reruns waste tonnes of time!
        # clean deps
        # echo "[6/9] Cleaning dependencies..."
        # rm -rf dep_*
    popd
    echo "done"
fi

# Create main "build" directory
if [ ! -d "build" ]
then
    mkdir build
fi

if [[ -n "$BUILD_ORCA" ]]
then
    echo "[7/9] Configuring Slic3r..."
    BUILD_ARGS=""
    if [[ -n "$FOUND_GTK3_DEV" ]]
    then
        BUILD_ARGS="-DSLIC3R_GTK=3"
    fi
    if [[ -n "$BUILD_DEBUG" ]]
    then
        BUILD_ARGS="${BUILD_ARGS} -DCMAKE_BUILD_TYPE=Debug -DBBL_INTERNAL_TESTING=1"
    else
        BUILD_ARGS="${BUILD_ARGS} -DBBL_RELEASE_TO_PUBLIC=1 -DBBL_INTERNAL_TESTING=0"
    fi
    
    # cmake
    pushd build
        cmake .. -DCMAKE_PREFIX_PATH="$PWD/../deps/build/destdir/usr/local" -DSLIC3R_STATIC=1 ${BUILD_ARGS}
        echo "done"
        
        # make Slic3r
        echo "[8/9] Building Slic3r..."
        make -j$NCORES GalaxySlicer # Slic3r
    popd
    ./run_gettext.sh
    echo "done"
fi

if [[ -e $ROOT/build/src/BuildLinuxImage.sh ]]; then
# Give proper permissions to script
chmod 755 $ROOT/build/src/BuildLinuxImage.sh

echo "[9/9] Generating Linux app..."
    pushd build
        if [[ -n "$BUILD_IMAGE" ]]
        then
            $ROOT/build/src/BuildLinuxImage.sh -i
        else
            $ROOT/build/src/BuildLinuxImage.sh
        fi
    popd
echo "done"
fi
