cmake_minimum_required(VERSION 3.20)
project(hcie-qt-app VERSION 0.1.0 LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOUIC_SEARCH_PATHS ${CMAKE_SOURCE_DIR}/ui)

find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets OpenGL OpenGLWidgets)

# ── Engine static library (built by Cargo) ──────────────────────────────────
# The Rust engine produces a C-compatible static library at:
#   ../target/debug/libhcie_engine_api.a   (Linux/macOS)
#   ../target/debug/hcie_engine_api.lib     (Windows MSVC)
# Build it first with: cargo build -p hcie-engine-api
set(ENGINE_LIB_DIR "${CMAKE_SOURCE_DIR}/../target/debug")

if(WIN32)
    set(ENGINE_STATIC_LIB "${ENGINE_LIB_DIR}/hcie_engine_api.lib")
    set(ENGINE_DLL_DIR "${ENGINE_LIB_DIR}")
else()
    set(ENGINE_STATIC_LIB "${ENGINE_LIB_DIR}/libhcie_engine_api.a")
endif()

# ── Sources ─────────────────────────────────────────────────────────────────
set(HCIE_QT_SOURCES
    src/main.cpp
    src/mainwindow.cpp
    src/canvas_widget.cpp
    src/hcie_engine_wrapper.cpp
    src/panels/tools_panel.cpp
    src/panels/layers_panel.cpp
    src/panels/colors_panel.cpp
    src/panels/brushes_panel.cpp
    src/panels/history_panel.cpp
    src/panels/properties_panel.cpp
    src/panels/filters_panel.cpp
    src/panels/ai_chat_panel.cpp
    src/panels/layer_styles_panel.cpp
    src/panels/layer_details_panel.cpp
    src/dialogs/new_image_dialog.cpp
    src/dialogs/filter_dialog.cpp
    src/dialogs/preferences_dialog.cpp
)

set(HCIE_QT_HEADERS
    src/mainwindow.h
    src/canvas_widget.h
    src/hcie_engine_wrapper.h
    src/panels/tools_panel.h
    src/panels/layers_panel.h
    src/panels/colors_panel.h
    src/panels/brushes_panel.h
    src/panels/history_panel.h
    src/panels/properties_panel.h
    src/panels/filters_panel.h
    src/panels/ai_chat_panel.h
    src/panels/layer_styles_panel.h
    src/panels/layer_details_panel.h
    src/dialogs/new_image_dialog.h
    src/dialogs/filter_dialog.h
    src/dialogs/preferences_dialog.h
)

set(HCIE_QT_UIS
    ui/mainwindow.ui
    ui/new_image_dialog.ui
    ui/filter_dialog.ui
    ui/preferences_dialog.ui
    # Panel UI files (Qt Designer editable)
    ui/layers_panel.ui
    ui/brushes_panel.ui
    ui/filters_panel.ui
    ui/history_panel.ui
    ui/properties_panel.ui
)

set(HCIE_QT_RESOURCES
    resources/resources.qrc
)

# ── Target ──────────────────────────────────────────────────────────────────
add_executable(hcie-qt
    ${HCIE_QT_SOURCES}
    ${HCIE_QT_HEADERS}
    ${HCIE_QT_UIS}
    ${HCIE_QT_RESOURCES}
)

target_include_directories(hcie-qt PRIVATE
    ${CMAKE_SOURCE_DIR}/src
    ${CMAKE_CURRENT_BINARY_DIR}  # for AUTOUIC generated headers
)

target_link_libraries(hcie-qt PRIVATE
    Qt6::Core
    Qt6::Gui
    Qt6::Widgets
    Qt6::OpenGL
    Qt6::OpenGLWidgets
    ${ENGINE_STATIC_LIB}
)

# ── Platform-specific link flags ────────────────────────────────────────────
if(UNIX AND NOT APPLE)
    target_link_libraries(hcie-qt PRIVATE
        pthread dl m rt
    )
    # dav1d (AVIF codec) — may need explicit versioned .so link
    set(DAV1D_LIB_PATH "/usr/lib/x86_64-linux-gnu/libdav1d.so.7")
    if(EXISTS "${DAV1D_LIB_PATH}")
        target_link_libraries(hcie-qt PRIVATE ${DAV1D_LIB_PATH})
    else()
        target_link_libraries(hcie-qt PRIVATE dav1d)
    endif()
    target_link_options(hcie-qt PRIVATE -rdynamic)
endif()

if(APPLE)
    target_link_libraries(hcie-qt PRIVATE
        pthread dl m
        "-framework OpenGL"
        "-framework CoreFoundation"
        "-framework Security"
        "-framework SystemConfiguration"
        "-framework CoreGraphics"
        "-framework CoreText"
        "-framework AppKit"
    )
endif()

if(WIN32)
    target_link_libraries(hcie-qt PRIVATE
        ws2_32 userenv bcrypt ntdll advapi32
        opengl32
    )
    # Copy Qt DLLs to output directory (handled by windeployqt at install time)
endif()

# ── Install ─────────────────────────────────────────────────────────────────
install(TARGETS hcie-qt RUNTIME DESTINATION bin)