##==============================================================================
##  ROTGEN - Runtime Overlay for Eigen
##  Copyright : CODE RECKONS
##  SPDX-License-Identifier: BSL-1.0
##==============================================================================

find_package(Doxygen COMPONENTS dot OPTIONAL_COMPONENTS mscgen dia)

if(Doxygen_FOUND)

  # Documentation options
  set(DOXYGEN_EXTRACT_ALL YES)
  set(DOXYGEN_GENERATE_TREEVIEW YES)
  set(DOXYGEN_EXCLUDE_PATTERNS */build/* */test/*)
  set(DOXYGEN_USE_MDFILE_AS_MAINPAGE ${CMAKE_SOURCE_DIR}/README.md)
  set(DOXYGEN_EXAMPLE_PATH ${CMAKE_SOURCE_DIR})
  set(DOXYGEN_DOT_TRANSPARENT YES)
  set(DOXYGEN_IMAGE_PATH ${CMAKE_SOURCE_DIR})

  # ============================================================================
  # Doxygen Awesome CSS

  include(FetchContent)

  FetchContent_Declare(
    doxygen_awesome_content
    GIT_REPOSITORY https://github.com/jothepro/doxygen-awesome-css.git
    GIT_TAG v2.4.1
    GIT_SHALLOW)

  FetchContent_GetProperties(doxygen_awesome_content)
  if(NOT doxygen_awesome_content_POPULATED)
    FetchContent_Populate(doxygen_awesome_content)
  endif()

  set(DOXYGEN_HTML_EXTRA_STYLESHEET
    ${doxygen_awesome_content_SOURCE_DIR}/doxygen-awesome.css)

  doxygen_add_docs(docs)

endif()