#!/usr/bin/env python

Import("env")
Import("env_modules")

env_openxr = env_modules.Clone()

#################################################
# Add in our Khronos OpenXR loader

thirdparty_obj = []
thirdparty_dir = "#thirdparty/openxr"

env_openxr.Prepend(
    CPPPATH=[
        thirdparty_dir,
        thirdparty_dir + "/include",
        thirdparty_dir + "/src",
        thirdparty_dir + "/src/common",
        thirdparty_dir + "/src/external/jsoncpp/include",
    ]
)

if env["platform"] == "android":
    # may need to set OPENXR_ANDROID_VERSION_SUFFIX
    env_openxr.AppendUnique(CPPDEFINES=["XR_OS_ANDROID", "XR_USE_PLATFORM_ANDROID"])
    env_openxr.AppendUnique(CPPDEFINES=["JSON_USE_EXCEPTION=0"])

    # may need to include java parts of the openxr loader
elif env["platform"] == "linuxbsd":
    env_openxr.AppendUnique(CPPDEFINES=["XR_OS_LINUX"])

    if env["x11"]:
        env_openxr.AppendUnique(CPPDEFINES=["XR_USE_PLATFORM_XLIB"])

    # FIXME: Review what needs to be set for Android and macOS.
    env_openxr.AppendUnique(CPPDEFINES=["HAVE_SECURE_GETENV"])
elif env["platform"] == "windows":
    env_openxr.AppendUnique(CPPDEFINES=["XR_OS_WINDOWS", "NOMINMAX", "XR_USE_PLATFORM_WIN32"])

# may need to check and set:
# - XR_USE_TIMESPEC

env_thirdparty = env_openxr.Clone()
env_thirdparty.disable_warnings()
env_thirdparty.AppendUnique(CPPDEFINES=["DISABLE_STD_FILESYSTEM"])

if "-fno-exceptions" in env_thirdparty["CXXFLAGS"]:
    env_thirdparty["CXXFLAGS"].remove("-fno-exceptions")
env_thirdparty.Append(CPPPATH=[thirdparty_dir + "/src/loader"])

# add in external jsoncpp dependency
env_thirdparty.add_source_files(thirdparty_obj, thirdparty_dir + "/src/external/jsoncpp/src/lib_json/json_reader.cpp")
env_thirdparty.add_source_files(thirdparty_obj, thirdparty_dir + "/src/external/jsoncpp/src/lib_json/json_value.cpp")
env_thirdparty.add_source_files(thirdparty_obj, thirdparty_dir + "/src/external/jsoncpp/src/lib_json/json_writer.cpp")

# add in load
if env["platform"] != "android":
    # On Android the openxr_loader is provided by separate plugins for each device
    # Build the engine using object files
    khrloader_obj = []
    env_thirdparty.add_source_files(khrloader_obj, thirdparty_dir + "/src/xr_generated_dispatch_table.c")

    env_thirdparty.add_source_files(khrloader_obj, thirdparty_dir + "/src/common/filesystem_utils.cpp")
    env_thirdparty.add_source_files(khrloader_obj, thirdparty_dir + "/src/common/object_info.cpp")

    env_thirdparty.add_source_files(khrloader_obj, thirdparty_dir + "/src/loader/api_layer_interface.cpp")
    env_thirdparty.add_source_files(khrloader_obj, thirdparty_dir + "/src/loader/loader_core.cpp")
    env_thirdparty.add_source_files(khrloader_obj, thirdparty_dir + "/src/loader/loader_instance.cpp")
    env_thirdparty.add_source_files(khrloader_obj, thirdparty_dir + "/src/loader/loader_logger_recorders.cpp")
    env_thirdparty.add_source_files(khrloader_obj, thirdparty_dir + "/src/loader/loader_logger.cpp")
    env_thirdparty.add_source_files(khrloader_obj, thirdparty_dir + "/src/loader/manifest_file.cpp")
    env_thirdparty.add_source_files(khrloader_obj, thirdparty_dir + "/src/loader/runtime_interface.cpp")
    env_thirdparty.add_source_files(khrloader_obj, thirdparty_dir + "/src/loader/xr_generated_loader.cpp")
    env.modules_sources += khrloader_obj

env.modules_sources += thirdparty_obj

#################################################
# And include our module source

module_obj = []

env_openxr.add_source_files(module_obj, "*.cpp")
env_openxr.add_source_files(module_obj, "action_map/*.cpp")
env_openxr.add_source_files(module_obj, "scene/*.cpp")

# We're a little more targeted with our extensions
if env["platform"] == "android":
    env_openxr.add_source_files(module_obj, "extensions/openxr_android_extension.cpp")
if env["vulkan"]:
    env_openxr.add_source_files(module_obj, "extensions/openxr_vulkan_extension.cpp")

env_openxr.add_source_files(module_obj, "extensions/openxr_palm_pose_extension.cpp")
env_openxr.add_source_files(module_obj, "extensions/openxr_htc_vive_tracker_extension.cpp")
env_openxr.add_source_files(module_obj, "extensions/openxr_hand_tracking_extension.cpp")
env_openxr.add_source_files(module_obj, "extensions/openxr_fb_passthrough_extension_wrapper.cpp")

env.modules_sources += module_obj

if env["tools"]:
    SConscript("editor/SCsub")

# Needed to force rebuilding the module files when the thirdparty library is updated.
env.Depends(module_obj, thirdparty_obj)