# First, set up registration functions for the kinds of resources we handle.
set(resource_root ${CMAKE_CURRENT_SOURCE_DIR}/)
set(resource_list)
if(WIN32)
    set(rc_file ${CMAKE_CURRENT_BINARY_DIR}/resources.rc)
    file(WRITE ${rc_file} "// Autogenerated; do not edit\n")

    function(add_resource name)
        set(source ${CMAKE_CURRENT_SOURCE_DIR}/${name})

        list(GET "${ARGN}" 0 id)
        if(id STREQUAL NOTFOUND)
            string(REPLACE ${resource_root} "" id ${source})
        endif()
        list(GET "${ARGN}" 1 type)
        if(type STREQUAL NOTFOUND)
            set(type RCDATA)
        endif()
        file(SHA512 "${source}" hash)
        file(APPEND ${rc_file} "${id} ${type} \"${source}\" // ${hash}\n")
        # CMake doesn't track file dependencies across directories, so we force
        # a reconfigure (which changes the RC file because of the hash above)
        # every time a resource is changed.
        set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS "${source}")
    endfunction()
elseif(APPLE)
    set(app_resource_dir ${CMAKE_BINARY_DIR}/src/solvespace.app/Contents/Resources)

    function(add_resource name)
        set(source ${CMAKE_CURRENT_SOURCE_DIR}/${name})
        set(target ${app_resource_dir}/${name})
        set(resource_list "${resource_list};${target}" PARENT_SCOPE)

        get_filename_component(target_dir ${target} DIRECTORY)
        add_custom_command(
            OUTPUT ${target}
            COMMAND ${CMAKE_COMMAND} -E make_directory ${target_dir}
            COMMAND ${CMAKE_COMMAND} -E copy ${source} ${target}
            COMMENT "Copying resource ${name}"
            DEPENDS ${source}
            VERBATIM)
    endfunction()

    function(add_xib name)
        set(source ${CMAKE_CURRENT_SOURCE_DIR}/${name})
        get_filename_component(basename ${name} NAME_WE)
        set(target ${app_resource_dir}/${basename}.nib)
        set(resource_list "${resource_list};${target}" PARENT_SCOPE)

        add_custom_command(
            OUTPUT ${target}
            COMMAND ${CMAKE_COMMAND} -E make_directory ${app_resource_dir}
            COMMAND ibtool --errors --warnings --notices --output-format human-readable-text
                --compile ${target} ${source}
            COMMENT "Building Interface Builder file ${name}"
            DEPENDS ${source}
            VERBATIM)
    endfunction()

    function(add_iconset name)
        set(source ${CMAKE_CURRENT_SOURCE_DIR}/${name})
        get_filename_component(basename ${name} NAME_WE)
        set(target ${app_resource_dir}/${basename}.icns)
        set(resource_list "${resource_list};${target}" PARENT_SCOPE)

        add_custom_command(
            OUTPUT ${target}
            COMMAND ${CMAKE_COMMAND} -E make_directory ${app_resource_dir}
            COMMAND iconutil -c icns -o ${target} ${source}
            COMMENT "Building icon set ${name}"
            DEPENDS ${source}
            VERBATIM)
    endfunction()
else() # Unix
    include(GNUInstallDirs)

    set(app_resource_dir ${CMAKE_BINARY_DIR}/res)

    function(add_resource name)
        set(source ${CMAKE_CURRENT_SOURCE_DIR}/${name})
        set(target ${app_resource_dir}/${name})
        set(resource_list "${resource_list};${target}" PARENT_SCOPE)

        get_filename_component(target_dir ${target} DIRECTORY)
        add_custom_command(
            OUTPUT ${target}
            COMMAND ${CMAKE_COMMAND} -E make_directory ${target_dir}
            COMMAND ${CMAKE_COMMAND} -E copy ${source} ${target}
            COMMENT "Copying resource ${name}"
            DEPENDS ${source}
            VERBATIM)

        get_filename_component(name_dir ${name} DIRECTORY)
        install(FILES ${source}
            DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/solvespace/${name_dir})
    endfunction()
endif()

# Second, register all resources.
add_resource(banner.txt)

# Third, distribute the resources.
add_custom_target(resources
    DEPENDS ${resource_list})
if(WIN32)
    set_property(TARGET resources PROPERTY EXTRA_SOURCES ${rc_file})
endif()