# Copyright (c) 2010-2022, Lawrence Livermore National Security, LLC. Produced
# at the Lawrence Livermore National Laboratory. All Rights reserved. See files
# LICENSE and NOTICE for details. LLNL-CODE-806117.
#
# This file is part of the MFEM library. For more information and source code
# availability visit https://mfem.org.
#
# MFEM is free software; you can redistribute it and/or modify it under the
# terms of the BSD-3 license. We welcome feedback and contributions, see file
# CONTRIBUTING.md for details.

find_package(Doxygen)

if (DOXYGEN_FOUND)
  set(MFEM_SOURCE_DIR ${PROJECT_SOURCE_DIR})
  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/CodeDocumentation.conf.in
    ${CMAKE_CURRENT_BINARY_DIR}/CodeDocumentation.conf @ONLY)

  add_custom_target(doc
    COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/CodeDocumentation.conf
    COMMAND echo "<meta http-equiv=\"REFRESH\" content=\"0;URL=CodeDocumentation/html/index.html\">" > ${CMAKE_CURRENT_BINARY_DIR}/CodeDocumentation.html
    BYPRODUCTS ${CMAKE_CURRENT_BINARY_DIR}/CodeDocumentation/html/index.html
    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
    COMMENT "Generating API documentation with Doxygen to CodeDocumentation.html"
    VERBATIM)

  add_custom_target(clean-doc
    COMMAND ${CMAKE_COMMAND} -E remove -f ${CMAKE_CURRENT_BINARY_DIR}/CodeDocumentation.html
    COMMAND ${CMAKE_COMMAND} -E remove -f ${CMAKE_CURRENT_BINARY_DIR}/warnings.log
    COMMAND ${CMAKE_COMMAND} -E remove_directory ${CMAKE_CURRENT_BINARY_DIR}/CodeDocumentation
    COMMENT "Removing API documentation"
    VERBATIM)

endif (DOXYGEN_FOUND)