if(WIN32)
    # デプロイ先ディレクトリ
    set(DEPLOY_DIR ${CMAKE_BINARY_DIR}/installer/deploy)

    # コピー対象
    set(APP_EXE $<TARGET_FILE:qhhsadv>)
    set(DATA_DIR ${CMAKE_BINARY_DIR}/data)

    # デプロイ処理
    add_custom_command(
        TARGET qhhsadv POST_BUILD
        COMMAND ${CMAKE_COMMAND} -E make_directory ${DEPLOY_DIR}
        COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:qhhsadv> ${DEPLOY_DIR}
        COMMAND ${CMAKE_COMMAND} -E copy_directory ${DATA_DIR} ${DEPLOY_DIR}/data
        COMMENT "Copying files to installer/deploy..."
    )

    # Qt DLL やプラグインを集める場合（windeployqt）
    # Qt bin ディレクトリを探す
    get_target_property(QT_QMAKE_EXECUTABLE Qt6::qmake IMPORTED_LOCATION)
    get_filename_component(QT_BIN_DIR "${QT_QMAKE_EXECUTABLE}" DIRECTORY)

    set(WINDEPLOYQT_EXECUTABLE "${QT_BIN_DIR}/windeployqt.exe")

    add_custom_command(
        TARGET qhhsadv POST_BUILD
        COMMAND "${WINDEPLOYQT_EXECUTABLE}" --dir ${DEPLOY_DIR} $<TARGET_FILE:qhhsadv>
        COMMENT "Running windeployqt..."
    )

    add_custom_command(
        TARGET qhhsadv POST_BUILD
        COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/installer
        COMMENT "Copying setup.iss..."
    )
    configure_file(${CMAKE_SOURCE_DIR}/installer/setup.iss.in ${CMAKE_BINARY_DIR}/installer/setup.iss @ONLY)

    # Inno Setup コンパイラを探す

    find_program(INNO_SETUP_COMPILER
        NAMES ISCC iscc
        HINTS
            "$ENV{LOCALAPPDATA}/Programs/Inno Setup 6"
    )
    # PATH に入っている場合も探す
    if(NOT INNO_SETUP_COMPILER)
        find_program(INNO_SETUP_COMPILER NAMES ISCC iscc)
    endif()

    if(INNO_SETUP_COMPILER)
        message(STATUS "Inno Setup found: ${INNO_SETUP_COMPILER}")

        # .iss スクリプトの場所
        set(INNO_SCRIPT ${CMAKE_BINARY_DIR}/installer/setup.iss)

        # 出力先（例: build ディレクトリ内）
        set(INSTALLER_OUTPUT ${CMAKE_BINARY_DIR}/installer/qhhsadv_setup.exe)

        add_custom_command(
            OUTPUT ${INSTALLER_OUTPUT}
            COMMAND "${INNO_SETUP_COMPILER}" "${INNO_SCRIPT}"
            DEPENDS qhhsadv  # アプリ本体がビルドされてから実行
            WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
            COMMENT "Building Inno Setup installer..."
        )

        add_custom_target(installer ALL
            DEPENDS ${INSTALLER_OUTPUT}
        )
    else()
        message(WARNING "Inno Setup (ISCC.exe) not found. Skipping installer target.")
    endif()
endif()