if(NOT XTC_BUILD_JUCE_GUI)
    return()
endif()
enable_language(CXX)
set(XTC_JUCE_ROOT "" CACHE PATH "External JUCE source checkout")
if(NOT TARGET juce::juce_gui_extra)
    if(NOT EXISTS "${XTC_JUCE_ROOT}/modules/juce_gui_extra/juce_gui_extra.h")
        message(FATAL_ERROR "XTC_BUILD_JUCE_GUI requires XTC_JUCE_ROOT pointing to an external JUCE SDK checkout")
    endif()
    set(JUCE_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
    set(JUCE_BUILD_EXTRAS OFF CACHE BOOL "" FORCE)
    add_subdirectory("${XTC_JUCE_ROOT}" juce-gui-sdk EXCLUDE_FROM_ALL)
endif()
message(STATUS "Optional JUCE frontend: JUCE is AGPLv3/commercial; review the SDK licence before distributing")
set(xtc_juce_sources main_window.cpp graph_widget.cpp sequencer_widget.cpp
    sequencer_commands.cpp sequencer_track_widget.cpp sequencer_clip_widget.cpp
    sequencer_velocity_widget.cpp sequencer_ruler_widget.cpp sequencer_instruments.cpp
    sequencer_waveforms.cpp piano_roll.cpp mixer_widget.cpp plugin_dialog.cpp sample_editor.cpp ui.cpp)
list(TRANSFORM xtc_juce_sources PREPEND "${PROJECT_SOURCE_DIR}/src/gui/JUCE/")
add_library(xtc-juce-gui STATIC ${xtc_juce_sources})
xtc_warnings(xtc-juce-gui)
target_compile_definitions(xtc-juce-gui PUBLIC JUCE_WEB_BROWSER=0 JUCE_USE_CURL=0 JUCE_MODAL_LOOPS_PERMITTED=1 JUCE_GLOBAL_MODULE_SETTINGS_INCLUDED=1 JUCE_STANDALONE_APPLICATION=1
    "$<$<CONFIG:Debug>:DEBUG=1;_DEBUG=1>" "$<$<NOT:$<CONFIG:Debug>>:_NDEBUG=1>")
target_link_libraries(xtc-juce-gui PUBLIC xtc-core PRIVATE juce::juce_gui_extra)
target_include_directories(xtc-juce-gui SYSTEM PUBLIC "${XTC_JUCE_ROOT}/modules")
juce_add_gui_app(xtc-juce PRODUCT_NAME "xtc JUCE" COMPANY_NAME xtc BUNDLE_ID org.xtc.workstation)
set_target_properties(xtc-juce PROPERTIES OUTPUT_NAME xtc-juce RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}")
target_sources(xtc-juce PRIVATE src/gui/JUCE/main.cpp)
target_link_libraries(xtc-juce PRIVATE xtc-juce-gui)
xtc_warnings(xtc-juce)
add_custom_target(gui-juce DEPENDS xtc-juce)
if(BUILD_TESTING)
    find_program(XTC_JUCE_XVFB_RUN xvfb-run)
    # Exercise the same C boundary, editing workflows and fault injection as FLTK.
    # Adapt toolkit names/initialisation and show the inspector before native focus.
    file(READ "${PROJECT_SOURCE_DIR}/tests/integration/test_gui.cpp" juce_test)
    string(REGEX REPLACE "#include <FL/[^>]+>" "#include \"ui.hpp\"" juce_test "${juce_test}")
    string(REPLACE "../../src/gui/" "${PROJECT_SOURCE_DIR}/src/gui/JUCE/" juce_test "${juce_test}")
    string(REPLACE "Fl_" "Ui" juce_test "${juce_test}")
    string(REPLACE "Fl::" "Ui::" juce_test "${juce_test}")
    string(REPLACE "FL_" "UI_" juce_test "${juce_test}")
    string(REPLACE "int main(int argc, char **argv)\n{" "int main(int argc, char **argv)\n{\n    UiInitialiser initialise;" juce_test "${juce_test}")
    # JUCE requires a visible component before native keyboard focus is requested.
    string(REPLACE "if(gain){Ui::focus(&gain->input);" "if(gain){window.show_track_inspector(true);Ui::focus(&gain->input);" juce_test "${juce_test}")
    # Native TextEditor commits on blur; unwind that additional edit before
    # the shared test checks undo of its earlier explicit gain edit.
    string(REPLACE "Ui::focus(nullptr);}" "Ui::focus(nullptr);pump();xtc_track_info blurred{};xtc_project_get_track(seq->project(),0,&blurred);if(blurred.gain==.123f)CHECK(window.undo()==XTC_OK);}" juce_test "${juce_test}")
    file(GENERATE OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/test_juce_gui.cpp" CONTENT "${juce_test}")
    add_executable(test_juce_gui "${CMAKE_CURRENT_BINARY_DIR}/test_juce_gui.cpp")
    target_include_directories(test_juce_gui PRIVATE "${PROJECT_SOURCE_DIR}/src/gui/JUCE")
    target_link_libraries(test_juce_gui PRIVATE xtc-juce-gui)
    xtc_wrap(test_juce_gui xtc_history_reserve)
    xtc_warnings(test_juce_gui)
    if(XTC_JUCE_XVFB_RUN)
        foreach(pair "editing|" "sequencer|SEQUENCER_COMPONENTS" "midi|MIDI_WORKFLOWS" "samples|SAMPLE_EDITOR" "creative|CREATIVE" "next-daw|NEXT_DAW")
            string(REPLACE "|" ";" pair "${pair}")
            list(GET pair 0 name)
            list(GET pair 1 env)
            add_test(NAME juce-gui-${name} COMMAND ${XTC_JUCE_XVFB_RUN} -a -s "-screen 0 1440x960x24" $<TARGET_FILE:test_juce_gui>)
            set_tests_properties(juce-gui-${name} PROPERTIES WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}" LABELS "gui;juce" RUN_SERIAL TRUE)
            if(env)
                set_property(TEST juce-gui-${name} PROPERTY ENVIRONMENT "XTC_TEST_${env}_ONLY=1")
            endif()
        endforeach()
    endif()
endif()
if(BUILD_TESTING AND JACK_FOUND AND XTC_WITH_JACK)
    add_executable(test_juce_playback tests/integration/test_juce_playback.cpp)
    target_link_libraries(test_juce_playback PRIVATE xtc-juce-gui)
    xtc_warnings(test_juce_playback)
    if(XTC_ENABLE_LIVE_TESTS AND XTC_JUCE_XVFB_RUN)
        add_test(NAME juce-playback COMMAND ${XTC_JUCE_XVFB_RUN} -a -s "-screen 0 1440x960x24" $<TARGET_FILE:test_juce_playback>)
        set_tests_properties(juce-playback PROPERTIES WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}" LABELS "live;juce" RUN_SERIAL TRUE)
    endif()
endif()
if(BUILD_TESTING AND XTC_JUCE_XVFB_RUN)
    function(xtc_juce_gui_variant name)
        add_test(NAME juce-gui-${name} COMMAND ${XTC_JUCE_XVFB_RUN} -a -s "-screen 0 1440x960x24" $<TARGET_FILE:test_juce_gui>)
        set_tests_properties(juce-gui-${name} PROPERTIES WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}" LABELS "gui;juce" RUN_SERIAL TRUE ENVIRONMENT "${ARGN}")
    endfunction()
    xtc_juce_gui_variant(modern-editing "XTC_TEST_MODERN_EDITING_ONLY=1")
    xtc_juce_gui_variant(midi-labels "XTC_TEST_MIDI_LABELS_ONLY=1")
    set_property(TEST juce-gui-next-daw APPEND PROPERTY ENVIRONMENT XTC_TEST_MODERN_EDITING_ONLY=1)
    xtc_juce_gui_variant(modern-plugins "XTC_TEST_CLAP=$<TARGET_FILE:clap-fixture>" "XTC_TEST_VST2=$<TARGET_FILE:vst2-fixture>" "XTC_TEST_VST3=$<TARGET_FILE:vst3-fixture>")
    xtc_juce_gui_variant(instruments "XTC_TEST_SYNTH_CLAP=$<TARGET_FILE:clap-synth-fixture>" "XTC_TEST_SYNTH_VST2=$<TARGET_FILE:vst2-synth-fixture>" "XTC_TEST_SYNTH_VST3=$<TARGET_FILE:vst3-synth-fixture>")
    if(XTC_LADSPA_AVAILABLE)
        xtc_juce_gui_variant(plugins "XTC_TEST_PLUGIN=$<TARGET_FILE:plugin-fixture>")
        xtc_juce_gui_variant(track-fx "XTC_TEST_TRACK_FX_ONLY=1" "XTC_TEST_PLUGIN=$<TARGET_FILE:plugin-fixture>" "XTC_TEST_CLAP=$<TARGET_FILE:clap-fixture>" "XTC_TEST_VST2=$<TARGET_FILE:vst2-fixture>" "XTC_TEST_VST3=$<TARGET_FILE:vst3-fixture>")
    endif()
endif()
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS "${PROJECT_SOURCE_DIR}/tests/integration/test_gui.cpp")