find_package(Gettext REQUIRED)

#QT4_ADD_TRANSLATION(QM ${tsfiles})

set(qtpro "${PROJECT_SOURCE_DIR}/project_files/hedgewars.pro")

add_custom_target(release-translation-qt

        COMMAND ${QT_LRELEASE_EXECUTABLE} -silent ${qtpro}

file(GLOB pofiles *.po)

string(REGEX REPLACE "(^|;)[^;]*/([^/]+).po($|;)" "\\1${CMAKE_CURRENT_BINARY_DIR}/\\2.mo\\3" mofiles "${pofiles}")

add_custom_target(release-translation-lua

        DEPENDS ${pofiles}

        COMMENT "Compiling po files"

)

# compile all the pofiles

foreach(pofile ${pofiles})

    string(REGEX REPLACE "^.*/([^/]+).po" "\\1.mo" mofile ${pofile})

#    add_custom_command(OUTPUT ${mofile}

    add_custom_command(TARGET release-translation-lua

        #COMMAND ${GETTEXT_MSGFMT_EXECUTABLE} "--statistics" "--output=${mofile}" ${pofile}

        COMMAND ${GETTEXT_MSGFMT_EXECUTABLE} "--output=${mofile}" ${pofile}

        #DEPENDS ${pofile}

#        COMMENT "Compiling po file ${mofile}"

    )

endforeach(pofile)

add_custom_target(release-translation ALL

        DEPENDS release-translation-qt release-translation-lua

)

if(UPDATE_TRANSLATIONS)

    # lua

    set(loctemplate "messages.pot")

    #set(luasearchroot "${PROJECT_SOURCE_DIR}/share/hedgewars/Data")

    set(luasearchroot "..")

    set(poargs

            "--no-wrap"

            "--add-location"

            "--sort-by-file"

    )

    # make sure to pass relative paths

    file(GLOB_RECURSE luafiles RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "${luasearchroot}/*.lua")

    add_custom_command(OUTPUT ${loctemplate}

        COMMAND "xgettext"

            "--output=${CMAKE_CURRENT_BINARY_DIR}/${loctemplate}"

            "--from-code=UTF-8"

            "-k" "--keyword=loc"

            ${poargs}

            #"--add-comments=@loc"

            ${luafiles}

        DEPENDS ${luafiles}

        # since we're using relative paths we need to work from within the source dir

        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}

        COMMENT "Creating po template"

    )

    add_custom_target(update-translation-lua

            COMMENT "Updating po files"

            DEPENDS ${loctemplate}

    )

    # merge template with existing PO files

    foreach(pofile ${pofiles})

        add_custom_command(TARGET update-translation-lua

            COMMAND ${GETTEXT_MSGMERGE_EXECUTABLE} "--quiet" "--update" "--backup=off" ${poargs} ${pofile} ${loctemplate}

#COMMENT "Updating file ${pofile}"

        )

    endforeach(pofile)

    add_dependencies(release-translation-lua update-translation-lua)

    # qt

    set(svrmsgsfile "${CMAKE_SOURCE_DIR}/QTfrontend/servermessages.h")

    if(NOT EXISTS ${svrmsgsfile})

        message(WARNING "\n"

            "${svrmsgs} not found.\n"

            "It is required for a proper QT translation files update!\n"

            "\n"

            "This is normal for out-of-dir builds.\n"

            "Make a symlink to the file in the build-dir.\n"

        )

    endif()

    add_custom_target(update-translation-qt

        COMMAND ${QT_LUPDATE_EXECUTABLE} -silent -locations absolute -pro ${qtpro}

        DEPENDS ${svrmsgsfile}

        COMMENT "Updating ts files"

    )

    add_dependencies(release-translation-qt update-translation-qt)

endif(UPDATE_TRANSLATIONS)

#install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR} DESTINATION "${SHAREPATH}Data"

#        FILES_MATCHING PATTERN "*.mo"

#        PATTERN "*/CMakeFiles" EXCLUDE

#)

#file(GLOB luafiles *.lua)

    ${mofiles}

    #${luafiles}

    DESTINATION "${SHAREPATH}Data/Locale"