:: Usage:
:: call prepare-msys2.bat [reinstall|clean]

setlocal enabledelayedexpansion

if "%EnvMSYS2Path%"=="" exit /B 1
if "%MSYS2Architecture%"=="" exit /B 1
if "%MSYS2Base%"=="" exit /B 1
if not exist "%EnvRootPath%"=="" exit /B 1

copy "%~dp0root\update-msys2.bat" "%EnvRootPath%" >nul

if "%~1"=="clean" (
	%cecho% info "Clean MSYS2"
	call "%ToolsPath%\remove-dir.bat" "%EnvMSYS2Path%"
	goto exit
)

set MSYS2Version=20231026

set MSYS2Install=msys2-base-x86_64-%MSYS2Version%.sfx.exe
set MSYS2Url=https://github.com/msys2/msys2-installer/releases/download/%MSYS2Version:~0,4%-%MSYS2Version:~4,2%-%MSYS2Version:~6,2%/%MSYS2Install%
set MSYS2UnpackPath=%EnvMSYS2Path%\msys64

if exist "%MSYS2UnpackPath%\usr\bin\pacman.exe" (
	if "%~1"=="reinstall" (
		choice /M "Found existing MSYS2 version. Do you want to proceed?"
		if !ERRORLEVEL!==2 goto exit
	) else (
		goto exit
	)
)

if exist "%MSYS2UnpackPath%" (
	%cecho% info "Remove previous MSYS2 version"
	call "%ToolsPath%\remove-dir.bat" "%MSYS2UnpackPath%"
)

%cecho% info "Download MSYS2 installation files"
if not exist "%EnvDownloadPath%\%MSYS2Install%" call "%ToolsPath%\download-file.bat" "%MSYS2Url%" "%EnvDownloadPath%\%MSYS2Install%"
if not exist "%EnvDownloadPath%\%MSYS2Install%" %cecho% error "Cannot download MSYS" & goto error

%cecho% info "Unpack MSYS2"
"%EnvDownloadPath%\%MSYS2Install%" -y -o"%EnvMSYS2Path%"

set MSYS2SH=%MSYS2UnpackPath%\usr\bin\sh

%cecho% info "Initialize MSYS2"
"%MSYS2SH%" -lc "yes | pacman --noconfirm -Syuu msys2-keyring"
"%MSYS2SH%" -lc "pacman --noconfirm -Sy"
"%MSYS2SH%" -lc "pacman --noconfirm -Su"

call "%MSYS2UnpackPath%\autorebase.bat"

:exit
endlocal
exit /B 0

:error
endlocal
exit /B 1