cmake_minimum_required(VERSION 3.21) # fmu-forge requires a more recent version of CMake
cmake_policy(SET CMP0091 NEW)

project(template_project_fmu)

# ===========
# Find Chrono
# ===========

list(APPEND CMAKE_PREFIX_PATH "${CMAKE_INSTALL_PREFIX}/../chrono/lib")

find_package(Chrono
             COMPONENTS FMI                 # required Chrono module
             OPTIONAL_COMPONENTS Irrlicht   # optional Chrono module
             CONFIG)

if (NOT Chrono_FOUND)
  message(FATAL_ERROR "Could not find Chrono or one of its required modules")
  return()
endif()

if (NOT CHRONO_STATIC)
  message(NOTICE "It is highly recommended to compile Chrono in static mode as suggested by FMI reference.")
endif()

if(APPLE)
    set(CMAKE_MACOSX_BUNDLE ON)
endif()

# ===============
# Fetch fmu-forge
# ===============

message(STATUS "\nFetch fmu-forge...")
include(FetchContent)

set(FMU_MODEL_IDENTIFIER "FmuComponentChrono" CACHE STRING "Set the FMU model identifier (name).")
set(FMU_RESOURCES_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/fmu_resources" CACHE PATH "Path to FMU resources directory.")
# set(FMU_DEPENDENCIES "${CHRONO_DEPENDENCY_DLLS}") # Set your own dependencies here if needed
set(BUILD_TESTING ON CACHE BOOL "Enable testing.")
set(BUILD_FMU_HOST ON CACHE BOOL "Build fmi_host executable to run FMUs.")
set(FMU_MSG_PREFIX "   ")

FetchContent_Declare(
    ${FMU_MODEL_IDENTIFIER}
    SOURCE_DIR ${CHRONO_FMU_FORGE_DIR}/fmi2
)

FetchContent_MakeAvailable(${FMU_MODEL_IDENTIFIER})

string(TOUPPER ${FMU_MODEL_IDENTIFIER} FMU_MODEL_IDENTIFIER_UPPERCASE)
MARK_AS_ADVANCED(FETCHCONTENT_BASE_DIR)
MARK_AS_ADVANCED(FETCHCONTENT_FULLY_DISCONNECTED)
MARK_AS_ADVANCED(FETCHCONTENT_QUIET)
MARK_AS_ADVANCED(FETCHCONTENT_SOURCE_DIR_${FMU_MODEL_IDENTIFIER_UPPERCASE})
MARK_AS_ADVANCED(FETCHCONTENT_UPDATES_DISCONNECTED)
MARK_AS_ADVANCED(FETCHCONTENT_UPDATES_DISCONNECTED_${FMU_MODEL_IDENTIFIER_UPPERCASE})

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE ${FMU_RUNTIME_OUTPUT_DIRECTORY})
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG ${FMU_RUNTIME_OUTPUT_DIRECTORY})

# =========
# Build FMU
# =========

message(STATUS "\nConfigure FMU...")

# Append FMU sources to automatically generated target
target_sources(${FMU_MODEL_IDENTIFIER} PRIVATE FmuComponentChrono.h FmuComponentChrono.cpp)
target_compile_definitions(${FMU_MODEL_IDENTIFIER} PUBLIC "CHRONO_DATA_DIR=\"${CHRONO_DATA_DIR}\"") 
target_link_libraries(${FMU_MODEL_IDENTIFIER} PUBLIC ${CHRONO_TARGETS})

if(MSVC)
  set_target_properties(${FMU_MODEL_IDENTIFIER} PROPERTIES MSVC_RUNTIME_LIBRARY ${CHRONO_MSVC_RUNTIME_LIBRARY})
endif()

# Enable testing
if(TESTING_ENABLED)
  enable_testing()
endif()

# =========================
# Build driver for the FMU
# =========================

message(STATUS "...add driver for ${FMU_MODEL_IDENTIFIER}")

set(DEMO demo_${FMU_MODEL_IDENTIFIER})
set(DEMO_SOURCES demo_FmuComponentChrono.cpp)
source_group("" FILES ${DEMO_SOURCES})

add_executable(${DEMO} ${DEMO_SOURCES})

target_include_directories(${DEMO} PRIVATE ${CHRONO_FMU_FORGE_DIR})
target_compile_definitions(${DEMO} PUBLIC FMU_UNPACK_DIRECTORY="${FMU_DIRECTORY}/tmp_unpack")
target_compile_definitions(${DEMO} PUBLIC FMU_DIRECTORY="${FMU_DIRECTORY}")
target_compile_definitions(${DEMO} PUBLIC FMU_FILENAME="${FMU_FILENAME}")
target_compile_definitions(${DEMO} PUBLIC FMI2_PLATFORM="${FMI2_PLATFORM}")
target_compile_definitions(${DEMO} PUBLIC SHARED_LIBRARY_SUFFIX="${CMAKE_SHARED_LIBRARY_SUFFIX}")
target_link_libraries(${DEMO} PUBLIC ${CHRONO_TARGETS})


if(MSVC)
  set_target_properties(${DEMO} PROPERTIES MSVC_RUNTIME_LIBRARY ${CHRONO_MSVC_RUNTIME_LIBRARY})
endif()

if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "6.0")
    target_link_options(${DEMO} PRIVATE "LINKER:-as-needed")
    target_link_libraries(${DEMO} PRIVATE stdc++fs)
    target_link_libraries(${DEMO} PRIVATE ${CMAKE_DL_LIBS})
endif()

add_dependencies(${DEMO} ${FMU_MODEL_IDENTIFIER})