cmake_minimum_required(VERSION 3.21)

project(NebulaBrowser LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# ------------------------------------------------------------
# CEF location
# ------------------------------------------------------------

set(CEF_ROOT "${CMAKE_SOURCE_DIR}/thirdparty/cef" CACHE PATH "Path to the CEF binary distribution")

if(NOT EXISTS "${CEF_ROOT}/cmake/FindCEF.cmake")
    message(FATAL_ERROR
        "CEF was not found.\n"
        "Expected CEF here:\n"
        "  ${CEF_ROOT}\n\n"
        "Unpack the CEF binary distribution for your OS into thirdparty/cef."
    )
endif()

list(APPEND CMAKE_MODULE_PATH "${CEF_ROOT}/cmake")
find_package(CEF REQUIRED)

add_subdirectory(
    "${CEF_LIBCEF_DLL_WRAPPER_PATH}"
    "${CMAKE_BINARY_DIR}/libcef_dll_wrapper"
)

SET_CEF_TARGET_OUT_DIR()

# ------------------------------------------------------------
# Sources
# ------------------------------------------------------------

set(NEBULA_COMMON_SOURCES
    app/main.cpp
    src/app/nebula_controller.cpp
    src/app/run.cpp
    src/browser/session_state.cpp
    src/browser/tab.cpp
    src/browser/tab_manager.cpp
    src/browser/url_utils.cpp
    src/cef/browser_client.cpp
    src/cef/nebula_app.cpp
    src/ui/paths.cpp
)

if(OS_WINDOWS)
    set(NEBULA_PLATFORM_SOURCES
        src/platform/win/paths_win.cpp
        src/platform/win/startup_win.cpp
        src/platform/win/browser_host_win.cpp
        src/platform/win/nebula_window_win.cpp
    )
    add_executable(NebulaBrowser WIN32
        ${NEBULA_COMMON_SOURCES}
        ${NEBULA_PLATFORM_SOURCES}
    )
elseif(OS_MACOSX)
    set(NEBULA_PLATFORM_SOURCES
        src/platform/mac/paths_mac.cpp
        src/platform/mac/startup_mac.cpp
        src/platform/mac/browser_host_mac.cpp
        src/platform/mac/nebula_window_mac.cpp
    )
    add_executable(NebulaBrowser MACOSX_BUNDLE
        ${NEBULA_COMMON_SOURCES}
        ${NEBULA_PLATFORM_SOURCES}
    )
elseif(OS_LINUX)
    set(NEBULA_PLATFORM_SOURCES
        src/platform/linux/paths_linux.cpp
        src/platform/linux/startup_linux.cpp
        src/platform/linux/browser_host_linux.cpp
        src/platform/linux/nebula_window_linux.cpp
    )
    add_executable(NebulaBrowser
        ${NEBULA_COMMON_SOURCES}
        ${NEBULA_PLATFORM_SOURCES}
    )
else()
    message(FATAL_ERROR "Unsupported platform.")
endif()

SET_EXECUTABLE_TARGET_PROPERTIES(NebulaBrowser)
add_dependencies(NebulaBrowser libcef_dll_wrapper)

target_include_directories(NebulaBrowser PRIVATE
    "${CMAKE_SOURCE_DIR}/src"
    "${CEF_ROOT}"
    "${CEF_ROOT}/include"
)

ADD_LOGICAL_TARGET("libcef_lib" "${CEF_LIB_RELEASE}" "${CEF_LIB_DEBUG}")
target_link_libraries(NebulaBrowser PRIVATE
    libcef_lib
    libcef_dll_wrapper
    ${CEF_STANDARD_LIBS}
)

if(MSVC)
    set_property(TARGET NebulaBrowser PROPERTY
        MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>"
    )
endif()

# ------------------------------------------------------------
# Platform-specific CEF runtime deployment
# ------------------------------------------------------------

if(OS_WINDOWS)
    target_link_libraries(NebulaBrowser PRIVATE dwmapi)
    target_compile_definitions(NebulaBrowser PRIVATE
        NOMINMAX
        WIN32_LEAN_AND_MEAN
    )
    COPY_FILES("NebulaBrowser" "${CEF_BINARY_FILES}" "${CEF_BINARY_DIR_RELEASE}" "${CEF_TARGET_OUT_DIR}")
    COPY_FILES("NebulaBrowser" "${CEF_RESOURCE_FILES}" "${CEF_RESOURCE_DIR}" "${CEF_TARGET_OUT_DIR}")
elseif(OS_LINUX)
    FIND_LINUX_LIBRARIES("X11")
    COPY_FILES("NebulaBrowser" "${CEF_BINARY_FILES}" "${CEF_BINARY_DIR_RELEASE}" "${CEF_TARGET_OUT_DIR}")
    COPY_FILES("NebulaBrowser" "${CEF_RESOURCE_FILES}" "${CEF_RESOURCE_DIR}" "${CEF_TARGET_OUT_DIR}")
elseif(OS_MACOSX)
    set(NEBULA_APP "${CEF_TARGET_OUT_DIR}/NebulaBrowser.app")
    COPY_MAC_FRAMEWORK(
        "NebulaBrowser"
        "Chromium Embedded Framework"
        "${CEF_BINARY_DIR_RELEASE}"
        "${NEBULA_APP}/Contents/Frameworks"
    )
    COPY_FILES(
        "NebulaBrowser"
        "${CEF_BINARY_FILES}"
        "${CEF_BINARY_DIR_RELEASE}"
        "${NEBULA_APP}/Contents/Frameworks"
    )
    COPY_FILES(
        "NebulaBrowser"
        "${CEF_RESOURCE_FILES}"
        "${CEF_RESOURCE_DIR}"
        "${NEBULA_APP}/Contents/Resources"
    )
endif()

# ------------------------------------------------------------
# Copy Nebula UI files after build
# ------------------------------------------------------------

add_custom_command(TARGET NebulaBrowser POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E copy_directory
        "${CMAKE_SOURCE_DIR}/ui"
        "$<TARGET_FILE_DIR:NebulaBrowser>/ui"

    COMMAND ${CMAKE_COMMAND} -E copy_directory
        "${CMAKE_SOURCE_DIR}/assets"
        "$<TARGET_FILE_DIR:NebulaBrowser>/ui/assets"

    COMMENT "Copying Nebula UI files and assets..."
)