find_package(Qt4 REQUIRED)
include(${QT_USE_FILE})
find_package(Gettext REQUIRED)

file(GLOB txttrans2 ??.txt)
file(GLOB txttrans5 ?????.txt)
file(GLOB tsfiles *.ts)
file(GLOB missionfiles missions_*.txt)
file(GLOB campaignfiles campaigns_*.txt)
file(GLOB tipfiles tips_*.xml)

#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}
        COMMENT "Compiling ts files"
)

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)

install(FILES
    ${mofiles}
    #${luafiles}
    ${txttrans2}
    ${txttrans5}
    ${QM}
    ${missionfiles}
    ${campaignfiles}
    ${tipfiles}
    DESTINATION "${SHAREPATH}Data/Locale"
)