@echo off

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

:: 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
    exit /b
)

:: 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

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

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

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

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

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

:: 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 (
    :: 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
    if not defined VS_VERSION (
        echo Error: Visual Studio version too old or version detection failed.
        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.
    exit /b
)

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

:: Parse command line parameters
:repeat
    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 if /I "%1" == "clang" (
            set MINGW_TOOCHAIN_FILE=toolchain-clang.cmake
        ) 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" == "VSSolution" (
            set VS_SOLUTION=1
            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 /I "%1" == "RTC" (
            echo Runtime checks enabled
            set VS_RUNTIME_CHECKS=1
        ) else (
            goto continue
        )
    )

    :: Go to next parameter
    SHIFT
    goto repeat
:continue

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

:: 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 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%

:: Use x86 for ARM host tools
if "%ARCH%" == "arm" (
    :: 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...
cd reactos
if EXIST CMakeCache.txt (
    del CMakeCache.txt /q
)

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

cd..

echo Configure script complete^^! Enter directories and execute appropriate build commands (ex: ninja, make, nmake, etc...).
exit /b

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