find_package(Doxygen QUIET)
if(Doxygen_FOUND)
    set(DOXYGEN_PROJECT_NAME "ViewDesignEngine")
    set(DOXYGEN_PROJECT_VERSION ${PROJECT_VERSION})
    set(DOXYGEN_INPUT "${CMAKE_SOURCE_DIR}/include")
    set(DOXYGEN_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/docs")
    set(DOXYGEN_EXTRACT_ALL YES)
    set(DOXYGEN_EXTRACT_PRIVATE YES)
    set(DOXYGEN_RECURSIVE YES)
    set(DOXYGEN_GENERATE_HTML YES)
    set(DOXYGEN_GENERATE_XML YES)

    doxygen_add_docs(doc
        ${CMAKE_SOURCE_DIR}/include
        ${CMAKE_SOURCE_DIR}/docs
        COMMENT "Generate API documentation"
    )
endif()