cmake_minimum_required(VERSION 3.16)
project(kde-ollie VERSION 0.1.0 LANGUAGES CXX)

option(OLLIE_KF5 "Build against KF5/Qt5 (Plasma 5.27)" OFF)

# Auto-detect: if OLLIE_KF5 not explicitly set, try KF6 first, fall back to KF5.
# Note: Gentoo and some distros don't ship a monolithic KF6Config.cmake; check
# individual components directly instead of find_package(KF6 COMPONENTS ...).
if(NOT DEFINED OLLIE_KF5 OR NOT OLLIE_KF5)
    find_package(KF6Runner QUIET)
    find_package(KF6CoreAddons QUIET)
    if(KF6Runner_FOUND AND KF6CoreAddons_FOUND)
        set(KF6_FOUND TRUE)
    else()
        message(STATUS "KF6 not found, falling back to KF5")
        set(OLLIE_KF5 ON)
    endif()
endif()

# Suppress CMP0160 warnings from KF5 cmake files (read-only IMPORTED property)
if(OLLIE_KF5)
    cmake_policy(SET CMP0160 OLD)
endif()

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_AUTOMOC ON)

find_package(ECM REQUIRED NO_MODULE)
set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH})

include(KDEInstallDirs)
include(KDECMakeSettings)
include(KDECompilerSettings NO_POLICY_SCOPE)

set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)

if(OLLIE_KF5)
    # --- Qt5 / KF5 ---
    find_package(Qt5 REQUIRED COMPONENTS Core Concurrent Widgets Quick Qml QuickControls2 Network)

    # Override KDE_INSTALL_PLUGINDIR so kcoreaddons_add_plugin installs under
    # CMAKE_INSTALL_PREFIX (e.g. ~/.local/lib/qt5/plugins), not the system dir.
    set(KDE_INSTALL_PLUGINDIR "lib/qt5/plugins" CACHE PATH "" FORCE)
    find_package(KF5 REQUIRED COMPONENTS
        Runner
        CoreAddons
        Config
        KIO
        TextEditor
        SyntaxHighlighting
    )

    # --- KRunner Plugin ---
    kcoreaddons_add_plugin(krunner_ollie SOURCES krunner/ollie_runner.cpp INSTALL_NAMESPACE "kf5/krunner")
    target_link_libraries(krunner_ollie
        KF5::Runner
        Qt5::Core
        Qt5::Widgets
    )

    # --- Kate Plugin ---
    kcoreaddons_add_plugin(ollie_kate SOURCES
        kate/ollie_kate.cpp
        kate/ollie_ghost.cpp
        gui/lib9pclient.cpp
        INSTALL_NAMESPACE "ktexteditor"
    )
    target_include_directories(ollie_kate PRIVATE
        ${CMAKE_SOURCE_DIR}/gui
        $ENV{HOME}/.local/include
    )
    target_link_libraries(ollie_kate
        KF5::TextEditor
        KF5::SyntaxHighlighting
        Qt5::Core
        Qt5::Widgets
        $ENV{HOME}/.local/lib/libollie9p.so
    )

    # --- KIO Worker (ollie:// protocol) ---
    kcoreaddons_add_plugin(kio_ollie SOURCES
        kio/ollie_kio.cpp
        gui/lib9pclient.cpp
        INSTALL_NAMESPACE "kf5/kio"
    )
    target_include_directories(kio_ollie PRIVATE
        ${CMAKE_SOURCE_DIR}/gui
        ${CMAKE_SOURCE_DIR}/kio
        $ENV{HOME}/.local/include
    )
    target_link_libraries(kio_ollie
        KF5::KIOCore
        Qt5::Core
        Qt5::Network
        $ENV{HOME}/.local/lib/libollie9p.so
    )
    install(FILES kio/ollie.protocol DESTINATION ${KDE_INSTALL_KSERVICESDIR})

    # --- GUI App (9P-based) ---
    # Strip Qt6-only grouped palette syntax (palette.active.*, palette.inactive.*,
    # palette.disabled.*) — Qt5 QML doesn't support color-group qualifiers.
    # ThemeManager::applyPalette() sets the application palette which Qt Quick
    # Controls 2 picks up automatically.
    file(READ ${CMAKE_CURRENT_SOURCE_DIR}/gui/main.qml _QML_SRC)
    string(REGEX REPLACE "[ \t]*(//[^\n]*palette[^\n]*\n|palette\\.(active|inactive|disabled)\\.[^\n]*\n)" "" _QML_SRC "${_QML_SRC}")
    file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/gui-kf5/main.qml "${_QML_SRC}")
    # Copy component QML files (no palette stripping needed - they don't use grouped palette)
    configure_file(gui/SettingsDialog.qml ${CMAKE_CURRENT_BINARY_DIR}/gui-kf5/SettingsDialog.qml COPYONLY)
    configure_file(gui/NewSessionDialog.qml ${CMAKE_CURRENT_BINARY_DIR}/gui-kf5/NewSessionDialog.qml COPYONLY)
    configure_file(gui/NewAgentDialog.qml ${CMAKE_CURRENT_BINARY_DIR}/gui-kf5/NewAgentDialog.qml COPYONLY)
    configure_file(gui/ChatBlockDelegate.qml ${CMAKE_CURRENT_BINARY_DIR}/gui-kf5/ChatBlockDelegate.qml COPYONLY)
    configure_file(gui/SessionTree.qml ${CMAKE_CURRENT_BINARY_DIR}/gui-kf5/SessionTree.qml COPYONLY)
    configure_file(gui/ChatPane.qml ${CMAKE_CURRENT_BINARY_DIR}/gui-kf5/ChatPane.qml COPYONLY)
    configure_file(gui/qml.qrc ${CMAKE_CURRENT_BINARY_DIR}/gui-kf5/qml.qrc COPYONLY)
    qt5_add_resources(GUI_KF5_QRC ${CMAKE_CURRENT_BINARY_DIR}/gui-kf5/qml.qrc)
    add_executable(ollie-gui
        gui/main.cpp
        gui/ollie9pclient.cpp
        gui/sessionmodel.cpp
        gui/lib9pclient.cpp
        gui/nativestreamer.cpp
        gui/chatblockmodel.cpp
        gui/thememanager.cpp
        gui/clipboardhelper.cpp
        ${GUI_KF5_QRC}
    )
    target_include_directories(ollie-gui PRIVATE
        ${CMAKE_SOURCE_DIR}/gui
        $ENV{HOME}/.local/include
    )
    target_link_libraries(ollie-gui
        Qt5::Core
        Qt5::Widgets
        Qt5::Quick
        Qt5::QuickControls2
        Qt5::Network
        KF5::ConfigCore
        KF5::SyntaxHighlighting
        $ENV{HOME}/.local/lib/libollie9p.so
    )

    # --- Install ---
    install(TARGETS ollie-gui DESTINATION ${KDE_INSTALL_BINDIR})

else()
    # --- Qt6 / KF6 ---
    find_package(Qt6 REQUIRED COMPONENTS Core Widgets Quick QuickControls2 Network)
    find_package(KF6 REQUIRED COMPONENTS Runner CoreAddons)
    find_package(KF6Config REQUIRED)
    find_package(KF6KIO REQUIRED)

    # KDE's KDE_INSTALL_PLUGINDIR defaults to lib64/plugins/ but Qt6 plugins
    # live under lib64/qt6/plugins/. Override so kcoreaddons_add_plugin installs
    # to the correct location.
    set(KDE_INSTALL_PLUGINDIR "${QT6_INSTALL_PLUGINS}" CACHE PATH "" FORCE)

    # --- KRunner Plugin ---
    kcoreaddons_add_plugin(krunner_ollie SOURCES krunner/ollie_runner.cpp INSTALL_NAMESPACE "kf6/krunner")
    target_link_libraries(krunner_ollie
        KF6::Runner
        Qt6::Core
        Qt6::Widgets
    )

    # --- Kate Plugin ---
    find_package(KF6TextEditor REQUIRED)
    kcoreaddons_add_plugin(ollie_kate SOURCES
        kate/ollie_kate.cpp
        kate/ollie_ghost.cpp
        gui/lib9pclient.cpp
        INSTALL_NAMESPACE "kf6/ktexteditor"
    )
    target_include_directories(ollie_kate PRIVATE
        ${CMAKE_SOURCE_DIR}/gui
        $ENV{HOME}/.local/include
    )
    target_link_libraries(ollie_kate
        KF6::TextEditor
        KF6::SyntaxHighlighting
        Qt6::Core
        Qt6::Widgets
        $ENV{HOME}/.local/lib/libollie9p.so
    )

    # --- KIO Worker (ollie:// protocol) ---
    kcoreaddons_add_plugin(kio_ollie SOURCES
        kio/ollie_kio.cpp
        gui/lib9pclient.cpp
        INSTALL_NAMESPACE "kf6/kio"
    )
    target_include_directories(kio_ollie PRIVATE
        ${CMAKE_SOURCE_DIR}/gui
        ${CMAKE_SOURCE_DIR}/kio
        $ENV{HOME}/.local/include
    )
    target_link_libraries(kio_ollie
        KF6::KIOCore
        Qt6::Core
        Qt6::Network
        $ENV{HOME}/.local/lib/libollie9p.so
    )

    # --- GUI App (9P-based, no D-Bus) ---
    find_package(KF6SyntaxHighlighting REQUIRED)
    add_executable(ollie-gui
        gui/main.cpp
        gui/ollie9pclient.cpp
        gui/sessionmodel.cpp
        gui/lib9pclient.cpp
        gui/nativestreamer.cpp
        gui/chatblockmodel.cpp
        gui/thememanager.cpp
        gui/clipboardhelper.cpp
    )
    target_include_directories(ollie-gui PRIVATE
        ${CMAKE_SOURCE_DIR}/gui
        $ENV{HOME}/.local/include
    )
    target_link_libraries(ollie-gui
        Qt6::Core
        Qt6::Widgets
        Qt6::Quick
        Qt6::QuickControls2
        Qt6::Network
        KF6::ConfigCore
        KF6::SyntaxHighlighting
        $ENV{HOME}/.local/lib/libollie9p.so
    )
    qt_add_resources(ollie-gui "gui"
        PREFIX "/"
        BASE gui
        FILES
            gui/main.qml
            gui/SettingsDialog.qml
            gui/NewSessionDialog.qml
            gui/NewAgentDialog.qml
            gui/ChatBlockDelegate.qml
            gui/SessionTree.qml
            gui/ChatPane.qml
    )

    # --- Install ---
    install(TARGETS ollie-gui DESTINATION ${KDE_INSTALL_BINDIR})
endif()