#!/usr/bin/env bash
set -euo pipefail

if ! command -v x86_64-w64-mingw32-g++ >/dev/null 2>&1; then
    echo "Missing x86_64-w64-mingw32-g++."
    echo "Install it in WSL with: sudo apt install mingw-w64"
    exit 1
fi

if [[ "${QT_MINGW_PREFIX:-}" == "" ]]; then
    echo "Missing QT_MINGW_PREFIX."
    echo "Example: export QT_MINGW_PREFIX=/opt/mxe/usr/x86_64-w64-mingw32.shared/qt6"
    exit 1
fi

if [[ "${OpenCV_DIR:-}" == "" ]]; then
    echo "Missing OpenCV_DIR."
    echo "Example: export OpenCV_DIR=/opt/mxe/usr/x86_64-w64-mingw32.shared/lib/cmake/opencv4"
    exit 1
fi

cmake -S . -B build-wsl-windows \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_TOOLCHAIN_FILE=cmake/toolchains/mingw64.cmake \
    -DCMAKE_PREFIX_PATH="${QT_MINGW_PREFIX}" \
    -DOpenCV_DIR="${OpenCV_DIR}"

cmake --build build-wsl-windows --config Release

echo "Windows executable should be under build-wsl-windows/."