# This file was adapted from the file with same name provided on the Casadi repository/build script
# https://github.com/casadi/casadi/tree/main/cmake
find_package(Ipopt CONFIG)


if(Ipopt_FOUND)
    set(IPOPT_LIBRARIES ${Ipopt_LIBRARIES})
    set(IPOPT_INCLUDEDIR ${Ipopt_INCLUDE_DIR})
else()

    # Get package info using pkg-config
    find_package(PkgConfig)
    pkg_search_module(IPOPT ipopt)

    include(canonicalize_paths)
    canonicalize_paths(IPOPT_LIBRARY_DIRS)

    # add osx frameworks to IPOPT_LIBRARIES
    if(IPOPT_LIBRARIES)
      if(APPLE)
        # turn "-framework;foo;-framework;bar;other" into "-framework foo;-framework bar;other"
        string(REPLACE "-framework;" "-framework " IPOPT_LDFLAGS_OTHER "${IPOPT_LDFLAGS_OTHER}")
        # take "-framework foo;-framework bar;other" and add only frameworks to IPOPT_LIBRARIES
        foreach(arg ${IPOPT_LDFLAGS_OTHER})
          if("${arg}" MATCHES "-framework .+")
            set(IPOPT_LIBRARIES "${IPOPT_LIBRARIES};${arg}")
          endif("${arg}" MATCHES "-framework .+")
        endforeach(arg ${IPOPT_LDFLAGS_OTHER})
      endif(APPLE)
    endif(IPOPT_LIBRARIES)

    # Callback support
    if(IPOPT_INCLUDEDIR)
      if(EXISTS ${IPOPT_INCLUDEDIR}/IpIpoptData.hpp AND EXISTS ${IPOPT_INCLUDEDIR}/IpOrigIpoptNLP.hpp AND EXISTS ${IPOPT_INCLUDEDIR}/IpTNLPAdapter.hpp  AND EXISTS ${IPOPT_INCLUDEDIR}/IpDenseVector.hpp AND EXISTS ${IPOPT_INCLUDEDIR}/IpExpansionMatrix.hpp)
        set(WITH_IPOPT_CALLBACK TRUE)
      else()
       list(APPEND IPOPT_INCLUDE_DIRS "${CMAKE_SOURCE_DIR}/external_packages/ipopt/3.10")
       set(WITH_IPOPT_CALLBACK TRUE)
       # message(STATUS "Detected an IPOPT configuration without development headers. Build will proceed, but without callback functionality. To enable it, see https://github.com/casadi/casadi/wiki/enableIpoptCallback")
      endif()
    endif(IPOPT_INCLUDEDIR)

    # Set standard flags
    include(FindPackageHandleStandardArgs)
    find_package_handle_standard_args(IPOPT DEFAULT_MSG IPOPT_LIBRARIES IPOPT_INCLUDE_DIRS)
endif()

if(IPOPT_FOUND)
  add_library(ipopt INTERFACE)

  foreach(LIB ${IPOPT_LIBRARIES})
    find_library(LIB_FULL_${LIB} NAMES ${LIB} PATHS ${IPOPT_LIBRARY_DIRS})
    target_link_libraries(ipopt INTERFACE ${LIB_FULL_${LIB}})
  endforeach()
  target_include_directories(ipopt INTERFACE ${IPOPT_INCLUDE_DIRS})
  if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
  else()
    target_compile_definitions(ipopt INTERFACE HAVE_CSTDDEF)
  endif()
  target_compile_definitions(ipopt INTERFACE ${IPOPT_CFLAGS_OTHER})
endif()