#
# Copyright (c) Contributors to the Open 3D Engine Project.
# For complete copyright and license terms please see the LICENSE at the root of this distribution.
#
# SPDX-License-Identifier: Apache-2.0 OR MIT
#
#
cmake_minimum_required(VERSION 3.22)

cmake_policy(SET CMP0012 NEW) # new policy for the if that evaluates a boolean out of "if(NOT ${same_location})"

cmake_path(SET target_file_dir "@target_file_dir@")

set(target_copy_files $<FILTER:$<REMOVE_DUPLICATES:"@target_copy_files@">,EXCLUDE,"^$">)
set(target_target_files $<FILTER:$<REMOVE_DUPLICATES:"@target_target_files@">,EXCLUDE,"^$">)
set(target_link_files $<FILTER:$<REMOVE_DUPLICATES:"@target_link_files@">,EXCLUDE,"^$">)
set(target_imported_files $<FILTER:$<REMOVE_DUPLICATES:"@target_imported_files@">,EXCLUDE,"^$">)

function(ly_copy source_files relative_target_directory)
    set(options)
    set(oneValueArgs TARGET_FILE_DIR SOURCE_TYPE SOURCE_GEM_MODULE)
    set(multiValueArgs)
    cmake_parse_arguments("${CMAKE_CURRENT_FUNCTION}" "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
    set(target_file_dir "${${CMAKE_CURRENT_FUNCTION}_TARGET_FILE_DIR}")
    set(source_type "${${CMAKE_CURRENT_FUNCTION}_SOURCE_TYPE}")
    set(source_is_gem "${${CMAKE_CURRENT_FUNCTION}_SOURCE_GEM_MODULE}")

    # Create the full path to the target directory
    cmake_path(APPEND target_directory "${target_file_dir}" "${relative_target_directory}")

    foreach(source_file IN LISTS source_files)
        cmake_path(GET source_file FILENAME target_filename)
        cmake_PATH(GET source_file EXTENSION target_filename_ext)
        cmake_path(APPEND target_file "${target_directory}" "${target_filename}")
        cmake_path(COMPARE "${source_file}" EQUAL "${target_file}" same_location)

        if("${source_file}" MATCHES "@LY_PYTHON_SHARED_LIB@")
            # Special case: Since the shared python library is loaded dynamically, it has the potential of being loaded from multiple
            # sources. To make sure that duplicate loads to the shared python library load to the same handle, create a soft-symlink
            # instead so that the dlopen call can resolve the library properly

            # Use the relative path to the package source for the link
            set(source_python_package_abs @LY_CURRENT_PYTHON_PACKAGE_PATH@/python/lib/@LY_PYTHON_SHARED_LIB@)
            execute_process(COMMAND ln -s -f "${source_python_package_abs}" @LY_PYTHON_SHARED_LIB@
                            WORKING_DIRECTORY "${target_directory}")

        elseif(NOT ${same_location})
            file(LOCK "${target_file}.lock" GUARD FUNCTION TIMEOUT 300)
            file(SIZE "${source_file}" source_file_size)
            if(EXISTS "${target_file}")
                file(SIZE "${target_file}" target_file_size)
            else()
                set(target_file_size 0)
            endif()

            if((NOT source_file_size EQUAL target_file_size) OR "${source_file}" IS_NEWER_THAN "${target_file}")
                message(STATUS "Copying \"${source_file}\" to \"${target_directory}\"...")
                file(MAKE_DIRECTORY "${full_target_directory}")
                file(COPY "${source_file}" DESTINATION "${target_directory}" USE_SOURCE_PERMISSIONS FOLLOW_SYMLINK_CHAIN)
                file(TOUCH_NOCREATE "${target_file}")

                # Special case, shared libraries that are copied from qt/plugins have their RPATH set to \$ORIGIN/../../lib
                # which is the correct relative path based on the source location. But when we copy it to their subfolder,
                # the rpath needs to be adjusted to the parent ($ORIGIN/..)
                if("${source_file}" MATCHES "qt/plugins" AND "${target_filename_ext}" STREQUAL ".so")
                    file(RPATH_CHANGE FILE "${target_file}" OLD_RPATH "\$ORIGIN/../../lib" NEW_RPATH "\$ORIGIN/..")
                endif()
            endif()
        endif()
    endforeach()
endfunction()

@LY_COPY_COMMANDS@

file(TOUCH "@STAMP_OUTPUT_FILE@")