set(METACORE_PANDA3D_VERSION "1.10.16" CACHE STRING "Pinned Panda3D SDK version used by MetaCore")
set(METACORE_PANDA3D_ARCH "x64" CACHE STRING "Pinned Panda3D Windows architecture used by MetaCore")
set(METACORE_PANDA3D_LOCAL_ROOT "${CMAKE_SOURCE_DIR}/.metacore/deps/panda3d/${METACORE_PANDA3D_VERSION}-${METACORE_PANDA3D_ARCH}" CACHE PATH "Local Panda3D SDK cache directory")

function(metacore_prepare_panda3d)
    if(WIN32)
        if(DEFINED ENV{PANDA3D_ROOT} AND NOT "$ENV{PANDA3D_ROOT}" STREQUAL "")
            set(_metacore_panda3d_root "$ENV{PANDA3D_ROOT}")
        elseif(DEFINED PANDA3D_ROOT AND NOT "${PANDA3D_ROOT}" STREQUAL "")
            set(_metacore_panda3d_root "${PANDA3D_ROOT}")
        else()
            set(_metacore_panda3d_root "${METACORE_PANDA3D_LOCAL_ROOT}")
        endif()

        file(TO_CMAKE_PATH "${_metacore_panda3d_root}" _metacore_panda3d_root)

        if(NOT EXISTS "${_metacore_panda3d_root}/include/pandaFramework.h")
            if(METACORE_AUTO_PREPARE_PANDA3D)
                message(STATUS "MetaCore will prepare Panda3D SDK into ${_metacore_panda3d_root}")
                execute_process(
                    COMMAND
                        powershell
                        -NoProfile
                        -ExecutionPolicy Bypass
                        -File "${CMAKE_SOURCE_DIR}/scripts/PrepareMetaCorePanda3D.ps1"
                        -Version "${METACORE_PANDA3D_VERSION}"
                        -Architecture "${METACORE_PANDA3D_ARCH}"
                        -InstallDir "${_metacore_panda3d_root}"
                    RESULT_VARIABLE _metacore_prepare_result
                )
                if(NOT _metacore_prepare_result EQUAL 0)
                    message(FATAL_ERROR "MetaCore failed to prepare Panda3D SDK. Set PANDA3D_ROOT manually or inspect scripts/PrepareMetaCorePanda3D.ps1 output.")
                endif()
            else()
                message(FATAL_ERROR "Panda3D SDK was not found. Set PANDA3D_ROOT or enable METACORE_AUTO_PREPARE_PANDA3D.")
            endif()
        endif()

        set(METACORE_PANDA3D_ROOT "${_metacore_panda3d_root}" CACHE PATH "Resolved Panda3D SDK root used by MetaCore" FORCE)
        set(METACORE_PANDA3D_INCLUDE_DIR "${METACORE_PANDA3D_ROOT}/include" CACHE PATH "Resolved Panda3D include directory" FORCE)
        set(METACORE_PANDA3D_LIB_DIR "${METACORE_PANDA3D_ROOT}/lib" CACHE PATH "Resolved Panda3D library directory" FORCE)
        set(METACORE_PANDA3D_BIN_DIR "${METACORE_PANDA3D_ROOT}/bin" CACHE PATH "Resolved Panda3D runtime directory" FORCE)
        set(METACORE_PANDA3D_ETC_DIR "${METACORE_PANDA3D_ROOT}/etc" CACHE PATH "Resolved Panda3D config directory" FORCE)
        set(METACORE_PANDA3D_MODELS_DIR "${METACORE_PANDA3D_ROOT}/models" CACHE PATH "Resolved Panda3D models directory" FORCE)
        set(METACORE_PANDA3D_PLUGINS_DIR "${METACORE_PANDA3D_ROOT}/plugins" CACHE PATH "Resolved Panda3D plugins directory" FORCE)

        set(_metacore_panda3d_libraries
            "${METACORE_PANDA3D_LIB_DIR}/libp3framework.lib"
            "${METACORE_PANDA3D_LIB_DIR}/libpanda.lib"
            "${METACORE_PANDA3D_LIB_DIR}/libpandafx.lib"
            "${METACORE_PANDA3D_LIB_DIR}/libpandaexpress.lib"
            "${METACORE_PANDA3D_LIB_DIR}/libpandagl.lib"
            "${METACORE_PANDA3D_LIB_DIR}/libp3windisplay.lib"
            "${METACORE_PANDA3D_LIB_DIR}/libp3dtool.lib"
            "${METACORE_PANDA3D_LIB_DIR}/libp3dtoolconfig.lib"
            opengl32
            gdi32
            user32
            shell32
            advapi32
            ws2_32
            winmm
        )

        add_library(MetaCorePanda3D::SDK INTERFACE IMPORTED GLOBAL)
        set_target_properties(MetaCorePanda3D::SDK PROPERTIES
            INTERFACE_INCLUDE_DIRECTORIES "${METACORE_PANDA3D_INCLUDE_DIR}"
            INTERFACE_LINK_LIBRARIES "${_metacore_panda3d_libraries}"
        )

        file(GLOB METACORE_PANDA3D_RUNTIME_DLLS "${METACORE_PANDA3D_BIN_DIR}/*.dll")
        set(METACORE_PANDA3D_RUNTIME_DLLS "${METACORE_PANDA3D_RUNTIME_DLLS}" CACHE INTERNAL "Resolved Panda3D runtime DLL list")
    else()
        message(FATAL_ERROR "MetaCore Panda3D V1 currently supports Windows only.")
    endif()
endfunction()

function(metacore_stage_panda3d_runtime target_name)
    if(NOT TARGET ${target_name})
        message(FATAL_ERROR "Target ${target_name} does not exist.")
    endif()

    foreach(_metacore_runtime_dll IN LISTS METACORE_PANDA3D_RUNTIME_DLLS)
        add_custom_command(TARGET ${target_name} POST_BUILD
            COMMAND ${CMAKE_COMMAND} -E copy_if_different
                "${_metacore_runtime_dll}"
                "$<TARGET_FILE_DIR:${target_name}>"
        )
    endforeach()

    if(EXISTS "${METACORE_PANDA3D_ETC_DIR}")
        add_custom_command(TARGET ${target_name} POST_BUILD
            COMMAND ${CMAKE_COMMAND} -E copy_directory
                "${METACORE_PANDA3D_ETC_DIR}"
                "$<TARGET_FILE_DIR:${target_name}>/etc"
        )
    endif()

    if(EXISTS "${METACORE_PANDA3D_MODELS_DIR}")
        add_custom_command(TARGET ${target_name} POST_BUILD
            COMMAND ${CMAKE_COMMAND} -E copy_directory
                "${METACORE_PANDA3D_MODELS_DIR}"
                "$<TARGET_FILE_DIR:${target_name}>/models"
        )
    endif()

    if(EXISTS "${METACORE_PANDA3D_PLUGINS_DIR}")
        add_custom_command(TARGET ${target_name} POST_BUILD
            COMMAND ${CMAKE_COMMAND} -E copy_directory
                "${METACORE_PANDA3D_PLUGINS_DIR}"
                "$<TARGET_FILE_DIR:${target_name}>/plugins"
        )
    endif()
endfunction()

function(metacore_stage_simplepbr_runtime target_name)
    if(NOT TARGET ${target_name})
        message(FATAL_ERROR "Target ${target_name} does not exist.")
    endif()

    set(_metacore_simplepbr_root "${CMAKE_SOURCE_DIR}/third_party/simplepbr-shaders")

    if(EXISTS "${_metacore_simplepbr_root}/shaders")
        add_custom_command(TARGET ${target_name} POST_BUILD
            COMMAND ${CMAKE_COMMAND} -E copy_directory
                "${_metacore_simplepbr_root}/shaders"
                "$<TARGET_FILE_DIR:${target_name}>/simplepbr/shaders"
        )
    endif()

    if(EXISTS "${_metacore_simplepbr_root}/textures")
        add_custom_command(TARGET ${target_name} POST_BUILD
            COMMAND ${CMAKE_COMMAND} -E copy_directory
                "${_metacore_simplepbr_root}/textures"
                "$<TARGET_FILE_DIR:${target_name}>/simplepbr/textures"
        )
    endif()
endfunction()