#!/bin/bash

set -e

XZ_DIR="mingw-w64-x86_64-xz"
XZ_PACKAGE_VERSION_FILE="${XZ_DIR}/version"
XZ_PACKAGE_VERSION="mingw-w64-x86_64-xz-5.2.5-2-any.pkg.tar.zst"

if [ -f "${XZ_DIR}/version" ]; then
    XZ_PACKAGE_INSTALLED_VERSION=$(<$XZ_PACKAGE_VERSION_FILE)
else
    XZ_PACKAGE_INSTALLED_VERSION=""
fi

if [ "${XZ_PACKAGE_VERSION}" != "${XZ_PACKAGE_INSTALLED_VERSION}" ]; then
    rm -rf ${XZ_DIR}
    mkdir ${XZ_DIR}
    (cd mingw-w64-x86_64-xz && \
        wget -qO- https://ftp.nluug.nl/pub/os/windows/msys2/builds/mingw/mingw64/mingw-w64-x86_64-xz-5.2.5-2-any.pkg.tar.zst | \
        unzstd - | \
        tar -xf -)
    echo ${XZ_PACKAGE_VERSION} > ${XZ_PACKAGE_VERSION_FILE}
fi

export MINGWPATHS="-Imingw-w64-x86_64-xz/mingw64/include -Lmingw-w64-x86_64-xz/mingw64/lib"

case "$(uname -s)" in
    Linux)
        export CC="x86_64-w64-mingw32-gcc"
        export CXX="x86_64-w64-mingw32-g++"
        ;;

    MINGW*)
        export CC="gcc"
        export CXX="g++"
        ;;
esac

make clean
make