@echo off
rem =====================================================================
rem  build-win.bat - Build the project on Windows (MSYS2 UCRT64 + MinGW).
rem
rem  Builds  build\hatsune-miku-shoshitsu.exe  and  build\hatsune-miku-demo.exe
rem
rem  Requirements (install once with MSYS2's pacman, using a proxy if needed):
rem    pacman -S mingw-w64-ucrt-x86_64-gcc mingw-w64-ucrt-x86_64-gcc-libs ^
rem              mingw-w64-ucrt-x86_64-ffmpeg mingw-w64-ucrt-x86_64-cmake
rem
rem  The FFmpeg dev libraries must be installed together with the gcc
rem  toolchain (FFmpeg 9 needs newer gcc-libs than a stock older gcc).
rem =====================================================================
setlocal EnableDelayedExpansion

set "SCRIPT_DIR=%~dp0"
cd /d "%SCRIPT_DIR%"

rem ---- locate the MSYS2 UCRT64 toolchain ----------------------------------
rem (note: an inherited MSYS2_ROOT env var is respected; don't pre-set it here
rem  to empty, or "if not defined" below would never match)
if not defined MSYS2_ROOT if exist "D:\SDKs\msys64\ucrt64\bin\g++.exe" set "MSYS2_ROOT=D:\SDKs\msys64"
if not defined MSYS2_ROOT if exist "C:\msys64\ucrt64\bin\g++.exe"    set "MSYS2_ROOT=C:\msys64"
if not defined MSYS2_ROOT (
    echo [build-win] MSYS2 UCRT64 not found.
    echo            Set the MSYS2_ROOT environment variable, e.g.:
    echo                set MSYS2_ROOT=D:\SDK\msys64
    exit /b 1
)
set "PATH=%MSYS2_ROOT%\ucrt64\bin;%PATH%"
echo [build-win] MSYS2 UCRT64 : %MSYS2_ROOT%

rem ---- sanity checks --------------------------------------------------------
where cmake.exe >nul 2>&1 || (
    echo [build-win] cmake not found. Install mingw-w64-ucrt-x86_64-cmake.
    exit /b 1
)
pkg-config --exists libavformat || (
    echo [build-win] FFmpeg dev libraries not found.
    echo            Install mingw-w64-ucrt-x86_64-ffmpeg.
    exit /b 1
)

rem ---- configure + build ----------------------------------------------------
cmake -S . -B build -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Release
if errorlevel 1 exit /b 1

cmake --build build -j
if errorlevel 1 exit /b 1

echo.
echo [build-win] Done.
echo     %SCRIPT_DIR%build\hatsune-miku-shoshitsu.exe
echo     %SCRIPT_DIR%build\hatsune-miku-demo.exe
echo.
echo Run with the MSYS2 UCRT64 bin dir on PATH so the FFmpeg DLLs resolve:
echo     set PATH=%MSYS2_ROOT%\ucrt64\bin;%%PATH%%
echo     build\hatsune-miku-shoshitsu.exe --video ^<file^> --audio ^<file^> --lyrics ^<file^>
exit /b 0