@echo off

REM This is needed so as to avoid static expansion of environment variables
REM inside if (...) conditionals.
REM See http://stackoverflow.com/questions/305605/weird-scope-issue-in-bat-file
REM for more explanation.
REM Precisely needed for configuring Visual Studio Environment.
setlocal enabledelayedexpansion

REM Does the user need help?
if /I "%1" == "help" goto help
if /I "%1" == "/?" (
:help
    echo Help for configure script
    echo Syntax: path\to\source\configure.cmd [script-options] [Cmake-options]
    echo Available script-options: Codeblocks, Eclipse, Makefiles, clang, VSSolution, RTC
    echo Cmake-options: -DVARIABLE:TYPE=VALUE
    endlocal
    exit /b
)

REM Special case %1 = arm_hosttools %2 = vcvarsall.bat %3 = %CMAKE_GENERATOR%
if /I "%1" == "arm_hosttools" (
    echo Configuring x86 host tools for ARM cross build

    REM This launches %VSINSTALLDIR%VS\vcvarsall.bat
    call %2 x86

    REM Configure host tools for x86.
    cmake -G %3 -DARCH:STRING=i386 %~dp0
    exit
)

REM Get the source root directory
set REACTOS_SOURCE_DIR=%~dp0

REM Set default generator
set CMAKE_GENERATOR="Ninja"
set CMAKE_GENERATOR_HOST=!CMAKE_GENERATOR!

REM Detect presence of cmake
cmd /c cmake --version 2>&1 | find "cmake version" > NUL || goto cmake_notfound

REM Detect build environment (MinGW, VS, WDK, ...)
if defined ROS_ARCH (
    echo Detected RosBE for %ROS_ARCH%
    set BUILD_ENVIRONMENT=MinGW
    set ARCH=%ROS_ARCH%
    set MINGW_TOOCHAIN_FILE=toolchain-gcc.cmake

) else if defined VCINSTALLDIR (
    REM VS command prompt does not put this in environment vars
    cl 2>&1 | find "x86" > NUL && set ARCH=i386
    cl 2>&1 | find "x64" > NUL && set ARCH=amd64
    cl 2>&1 | find "ARM" > NUL && set ARCH=arm
    cl 2>&1 | find "15.00." > NUL && set VS_VERSION=9
    cl 2>&1 | find "16.00." > NUL && set VS_VERSION=10
    cl 2>&1 | find "17.00." > NUL && set VS_VERSION=11
    cl 2>&1 | find "18.00." > NUL && set VS_VERSION=12
    cl 2>&1 | find "19.00." > NUL && set VS_VERSION=14
    cl 2>&1 | find "19.10." > NUL && set VS_VERSION=15
    cl 2>&1 | find "19.11." > NUL && set VS_VERSION=15
    if not defined VS_VERSION (
        echo Error: Visual Studio version too old or version detection failed.
        endlocal
        exit /b
    )
    set BUILD_ENVIRONMENT=VS
    set VS_SOLUTION=0
    set VS_RUNTIME_CHECKS=0
    echo Detected Visual Studio Environment !BUILD_ENVIRONMENT!!VS_VERSION!-!ARCH!
) else (
    echo Error: Unable to detect build environment. Configure script failure.
    endlocal
    exit /b
)

REM Checkpoint
if not defined ARCH (
    echo Unknown build architecture
    endlocal
    exit /b
)

set NEW_STYLE_BUILD=1
set USE_CLANG_CL=0

REM Parse command line parameters
:repeat
    if /I "%1%" == "-DNEW_STYLE_BUILD" (
        set NEW_STYLE_BUILD=%2
    ) else if "%BUILD_ENVIRONMENT%" == "MinGW" (
        if /I "%1" == "Codeblocks" (
            set CMAKE_GENERATOR="CodeBlocks - MinGW Makefiles"
        ) else if /I "%1" == "Eclipse" (
            set CMAKE_GENERATOR="Eclipse CDT4 - MinGW Makefiles"
        ) else if /I "%1" == "Makefiles" (
            set CMAKE_GENERATOR="MinGW Makefiles"
        ) else (
            goto continue
        )
    ) else (
        if /I "%1" == "CodeBlocks" (
            set CMAKE_GENERATOR="CodeBlocks - NMake Makefiles"
        ) else if /I "%1" == "Eclipse" (
            set CMAKE_GENERATOR="Eclipse CDT4 - NMake Makefiles"
        ) else if /I "%1" == "Makefiles" (
            set CMAKE_GENERATOR="NMake Makefiles"
        ) else if /I "%1" == "clang" (
            set USE_CLANG_CL=1
        ) else if /I "%1" == "VSSolution" (
            set VS_SOLUTION=1
            REM explicitly set VS version for project generator
            if /I "%2" == "-VS_VER" (
                set VS_VERSION=%3
                echo Visual Studio Environment set to !BUILD_ENVIRONMENT!!VS_VERSION!-!ARCH!
            )
            if "!VS_VERSION!" == "9" (
                if "!ARCH!" == "amd64" (
                    set CMAKE_GENERATOR="Visual Studio 9 2008 Win64"
                ) else (
                    set CMAKE_GENERATOR="Visual Studio 9 2008"
                )
            ) else if "!VS_VERSION!" == "10" (
                if "!ARCH!" == "amd64" (
                    set CMAKE_GENERATOR="Visual Studio 10 Win64"
                ) else (
                    set CMAKE_GENERATOR="Visual Studio 10"
                )
            ) else if "!VS_VERSION!" == "11" (
                if "!ARCH!" == "amd64" (
                    set CMAKE_GENERATOR="Visual Studio 11 Win64"
                ) else if "!ARCH!" == "arm" (
                    set CMAKE_GENERATOR="Visual Studio 11 ARM"
                    set CMAKE_GENERATOR_HOST="Visual Studio 11"
                ) else (
                    set CMAKE_GENERATOR="Visual Studio 11"
                )
            ) else if "!VS_VERSION!" == "12" (
                if "!ARCH!" == "amd64" (
                    set CMAKE_GENERATOR="Visual Studio 12 Win64"
                ) else if "!ARCH!" == "arm" (
                    set CMAKE_GENERATOR="Visual Studio 12 ARM"
                    set CMAKE_GENERATOR_HOST="Visual Studio 12"
                ) else (
                    set CMAKE_GENERATOR="Visual Studio 12"
                )
            ) else if "!VS_VERSION!" == "14" (
                if "!ARCH!" == "amd64" (
                    set CMAKE_GENERATOR="Visual Studio 14 Win64"
                ) else if "!ARCH!" == "arm" (
                    set CMAKE_GENERATOR="Visual Studio 14 ARM"
                    set CMAKE_GENERATOR_HOST="Visual Studio 14"
                ) else (
                    set CMAKE_GENERATOR="Visual Studio 14"
                )
            ) else if "!VS_VERSION!" == "15" (
                if "!ARCH!" == "amd64" (
                    set CMAKE_GENERATOR="Visual Studio 15 Win64"
                ) else if "!ARCH!" == "arm" (
                    set CMAKE_GENERATOR="Visual Studio 15 ARM"
                    set CMAKE_GENERATOR_HOST="Visual Studio 15"
                ) else (
                    set CMAKE_GENERATOR="Visual Studio 15"
                )
            )
        ) else if /I "%1" == "RTC" (
            echo Runtime checks enabled
            set VS_RUNTIME_CHECKS=1
        ) else (
            goto continue
        )
    )

    REM Go to next parameter
    SHIFT
    goto repeat
:continue

REM Inform the user about the default build
if "!CMAKE_GENERATOR!" == "Ninja" (
    echo This script defaults to Ninja. Type "configure help" for alternative options.
)

REM Create directories
set REACTOS_OUTPUT_PATH=output-%BUILD_ENVIRONMENT%-%ARCH%
if "%REACTOS_SOURCE_DIR%" == "%CD%\" (
    echo Creating directories in %REACTOS_OUTPUT_PATH%

    if not exist %REACTOS_OUTPUT_PATH% (
        mkdir %REACTOS_OUTPUT_PATH%
    )
    cd %REACTOS_OUTPUT_PATH%
)

if "%NEW_STYLE_BUILD%"=="0" (

    if not exist host-tools (
        mkdir host-tools
    )

    if not exist reactos (
        mkdir reactos
    )

    echo Preparing host tools...
    cd host-tools
    if EXIST CMakeCache.txt (
        del CMakeCache.txt /q
    )

    set REACTOS_BUILD_TOOLS_DIR=!CD!

    REM Use x86 for ARM host tools
    if "%ARCH%" == "arm" (
        REM Launch new script instance for x86 host tools configuration
        start "Preparing host tools for ARM cross build..." /I /B /WAIT %~dp0configure.cmd arm_hosttools "%VSINSTALLDIR%VC\vcvarsall.bat" %CMAKE_GENERATOR_HOST%
    ) else (
        cmake -G %CMAKE_GENERATOR% -DARCH:STRING=%ARCH% "%REACTOS_SOURCE_DIR%"
    )

    cd..

)

echo Preparing reactos...

if "%NEW_STYLE_BUILD%"=="0" (
    cd reactos
)

if EXIST CMakeCache.txt (
    del CMakeCache.txt /q
    del host-tools\CMakeCache.txt /q
)

if "%NEW_STYLE_BUILD%"=="0" (
    set BUILD_TOOLS_FLAG=-DREACTOS_BUILD_TOOLS_DIR:PATH="%REACTOS_BUILD_TOOLS_DIR%"
)

if "%BUILD_ENVIRONMENT%" == "MinGW" (
    cmake -G %CMAKE_GENERATOR% -DENABLE_CCACHE:BOOL=0 -DCMAKE_TOOLCHAIN_FILE:FILEPATH=%MINGW_TOOCHAIN_FILE% -DARCH:STRING=%ARCH% %BUILD_TOOLS_FLAG% %* "%REACTOS_SOURCE_DIR%"
) else if %USE_CLANG_CL% == 1 (
        cmake -G %CMAKE_GENERATOR% -DCMAKE_TOOLCHAIN_FILE:FILEPATH=toolchain-msvc.cmake -DARCH:STRING=%ARCH% %BUILD_TOOLS_FLAG% -DUSE_CLANG_CL:BOOL=1 -DRUNTIME_CHECKS:BOOL=%VS_RUNTIME_CHECKS% %* "%REACTOS_SOURCE_DIR%"
) else (
    cmake -G %CMAKE_GENERATOR% -DCMAKE_TOOLCHAIN_FILE:FILEPATH=toolchain-msvc.cmake -DARCH:STRING=%ARCH% %BUILD_TOOLS_FLAG% -DRUNTIME_CHECKS:BOOL=%VS_RUNTIME_CHECKS% %* "%REACTOS_SOURCE_DIR%"
)

if "%NEW_STYLE_BUILD%"=="0" (
    cd..
)

echo Configure script complete^^! Execute appropriate build commands (ex: ninja, make, nmake, etc...).
endlocal
exit /b

:cmake_notfound
echo Unable to find cmake, if it is installed, check your PATH variable.
endlocal
exit /b