cmake_minimum_required(VERSION 3.11)

project(SuperBuild)

include(ExternalProject)

set(CL_ARGS "")
set(VS_ARGS "")

if (MSVC)
  if (NOT VCPKG_DIR)
    message(FATAL_ERROR "VCPKG_DIR NOT SET")
  endif()

  if (NOT TARGET_TRIPLET)
    set(TARGET_TRIPLET "x64-windows-static")
  endif()

  string(FIND "${TARGET_TRIPLET}" "static" STATIC_TARGET)
  if (STATIC_TARGET)
    set(USE_STATIC_LIBS ON)
  endif()

  list(APPEND VS_ARGS
       "-DCMAKE_TOOLCHAIN_FILE=${VCPKG_DIR}/scripts/buildsystems/vcpkg.cmake"
       "-DVCPKG_TARGET_TRIPLET=${TARGET_TRIPLET}"
       "-DProtobuf_IMPORT_DIRS=${VCPKG_DIR}/installed/${TARGET_TRIPLET}/include"
  )
endif()

if(USE_STATIC_LIBS)
  list(APPEND CL_ARGS
       ${VS_ARGS}
       "-DUSE_STATIC_LIBS=ON"
       "-DBUILD_STATIC_LIBS=ON"
       "-DBUILD_SHARED_LIBS=OFF" 
  )
endif()

message("CMake args: ${CL_ARGS}")

ExternalProject_Add(
  libProtocols
  DOWNLOAD_COMMAND ""
  SOURCE_DIR "${CMAKE_SOURCE_DIR}/shared/protos"
  BINARY_DIR "${CMAKE_SOURCE_DIR}/build/libProtocols"
  CMAKE_ARGS  ${CL_ARGS}
)

ExternalProject_Add(
  libEGM
  DEPENDS libProtocols
  DOWNLOAD_COMMAND ""
  SOURCE_DIR "${CMAKE_SOURCE_DIR}/CommandLine/libEGM"
  BINARY_DIR "${CMAKE_SOURCE_DIR}/build/libEGM"
  CMAKE_ARGS ${CL_ARGS}
)

ExternalProject_Add(
  compiler
  DEPENDS libProtocols
  DOWNLOAD_COMMAND ""
  SOURCE_DIR "${CMAKE_SOURCE_DIR}/CompilerSource"
  BINARY_DIR "${CMAKE_SOURCE_DIR}/build/compiler"
  CMAKE_ARGS ${CL_ARGS}
) 

ExternalProject_Add(
  emake
  DEPENDS libEGM compiler
  DOWNLOAD_COMMAND ""
  SOURCE_DIR "${CMAKE_SOURCE_DIR}/CommandLine/emake"
  BINARY_DIR "${CMAKE_SOURCE_DIR}/build/emake"
  CMAKE_ARGS ${CL_ARGS}
)

ExternalProject_Add(
  gm2egm
  DEPENDS libEGM
  DOWNLOAD_COMMAND ""
  SOURCE_DIR "${CMAKE_SOURCE_DIR}/CommandLine/gm2egm"
  BINARY_DIR "${CMAKE_SOURCE_DIR}/build/gm2egm"
  CMAKE_ARGS ${CL_ARGS}
)

if(UNIX)
  ExternalProject_Add(
    test-runner
    DEPENDS libEGM
    DOWNLOAD_COMMAND ""
    SOURCE_DIR "${CMAKE_SOURCE_DIR}/CommandLine/testing"
    BINARY_DIR "${CMAKE_SOURCE_DIR}/build/test-runner"
    CMAKE_ARGS ${CL_ARGS}
  )
endif()