# COIN-related CMake configuration

# cache
set(COIN_SOLVER "CLP" CACHE STRING "Linear program solver to be used by COIN.")
set_property(CACHE COIN_SOLVER PROPERTY STRINGS CLP CPX GRB)
if(NOT COIN_SOLVER STREQUAL CLP)
  set(COIN_EXTERNAL_SOLVER_INCLUDE_DIRECTORIES "" CACHE PATH "Locations of required header files for the external LP solver.")
  set(COIN_EXTERNAL_SOLVER_LIBRARIES "" CACHE FILEPATH "Libraries for the external LP solver.")
else()
  unset(COIN_EXTERNAL_SOLVER_INCLUDE_DIRECTORIES CACHE)
  unset(COIN_EXTERNAL_SOLVER_LIBRARIES CACHE)
endif()

# compilation
# file(GLOB_RECURSE COIN_SOURCES src/coin/*.cpp)
# compile only files needed for tulip build
file(STRINGS cmake/coin_files_for_tlp.txt COIN_SOURCES)
if(NOT COIN_SOLVER STREQUAL "GRB")
  list(REMOVE_ITEM COIN_SOURCES "${PROJECT_SOURCE_DIR}/src/coin/Osi/OsiGrbSolverInterface.cpp")
endif()
if(NOT COIN_SOLVER STREQUAL "CPX")
  list(REMOVE_ITEM COIN_SOURCES "${PROJECT_SOURCE_DIR}/src/coin/Osi/OsiCpxSolverInterface.cpp")
endif()
# add_library(COIN ${COIN_LIBRARY_TYPE} ${COIN_SOURCES})
add_library(COIN STATIC ${COIN_SOURCES})
SET_TARGET_PROPERTIES(COIN PROPERTIES POSITION_INDEPENDENT_CODE ON)
group_files(COIN_SOURCES "coin")
target_include_directories(COIN SYSTEM PUBLIC
  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include/coin>
  $<INSTALL_INTERFACE:include/coin>)
target_compile_definitions(COIN PRIVATE
    -DCLP_BUILD -DCOINUTILS_BUILD -DOSI_BUILD -D__OSI_CLP__
    -DCOMPILE_IN_CG -DCOMPILE_IN_CP -DCOMPILE_IN_LP -DCOMPILE_IN_TM
    -DHAVE_CONFIG_H -D_CRT_SECURE_NO_WARNINGS)

# external LP solver
if(COIN_EXTERNAL_SOLVER_LIBRARIES)
  target_link_libraries(COIN PUBLIC ${COIN_EXTERNAL_SOLVER_LIBRARIES})
  foreach(EXT_LIB ${COIN_EXTERNAL_SOLVER_LIBRARIES})
    if(NOT EXISTS ${EXT_LIB} OR IS_DIRECTORY ${EXT_LIB})
      message(SEND_ERROR "The provided library does not exist: ${EXT_LIB}")
    endif()
  endforeach()
endif()
if(COIN_EXTERNAL_SOLVER_INCLUDE_DIRECTORIES)
  foreach(EXT_DIR ${COIN_EXTERNAL_SOLVER_INCLUDE_DIRECTORIES})
    if(NOT IS_DIRECTORY ${EXT_DIR})
      message(SEND_ERROR "The provided directory is invalid: ${EXT_DIR}")
    endif()
  endforeach()
  target_include_directories(COIN SYSTEM PUBLIC ${COIN_EXTERNAL_SOLVER_INCLUDE_DIRECTORIES})
endif()

# autogen header variables
if(COIN_SOLVER STREQUAL "CLP")
  set(COIN_SOLVER_IS_EXTERNAL 0)
else()
  set(COIN_SOLVER_IS_EXTERNAL 1)
endif()

# installation of the COIN cmake targets included by the ogdf-config.cmake
# install(TARGETS COIN EXPORT CoinTargets COMPONENT COIN) # add the OGDF target to the export set "CoinTargets"
# install(EXPORT CoinTargets DESTINATION ${CMAKE_INSTALL_DATADIR}/ogdf) # write all targets in this export set to CoinTargets.cmake
# export(EXPORT CoinTargets FILE "${PROJECT_BINARY_DIR}/CoinTargets.cmake") # and also put that file in the build-tree, not only the install-tree
# # ...and of the static headers
# install(DIRECTORY include/coin
#   DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
#   COMPONENT COINheaders
#   FILES_MATCHING
#     PATTERN "*.h"
#     PATTERN "*.hpp")