#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2023 Huawei Device Co., Ltd.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import tarfile
import argparse
import os
import subprocess
import sys
import shutil

patch_files = [
    "backport-x86-64-Always-double-jump-table-slot-size-for-CET-71.patch",
    "backport-Fix-check-for-invalid-varargs-arguments-707.patch",
    "libffi-Add-sw64-architecture.patch",
    "backport-Fix-signed-vs-unsigned-comparison.patch",
    "riscv-extend-return-types-smaller-than-ffi_arg-680.patch",
    "fix-AARCH64EB-support.patch",
    "backport-openharmony-adapt.patch",
    "backport-openharmony-dummy.patch"
]

def untar_file(tar_file_path, extract_path):
    try:
        tar_cmd = ['tar', '-zxf', tar_file_path, '-C', extract_path]
        subprocess.run(tar_cmd, check=True)
    except Exception as e:
        print("tar error!")
        return

def move_file(src_path, dst_path):
    patch_dir = os.path.join(src_path, "patch")
    for file in patch_files:
        src_file = os.path.join(patch_dir, file)
        dst_file = os.path.join(dst_path, file)
        shutil.copy(src_file, dst_file)

def apply_patch(patch_file, target_dir):
    try:
        if not os.path.exists(target_dir):
            return
        patch_cmd = ['patch', '-p1', "--fuzz=0", "--no-backup-if-mismatch", '-i', patch_file, '-d', target_dir]
        subprocess.run(patch_cmd, check=True)
    except Exception as e:
        print("apply_patch error!")
        return

def do_patch(target_dir):
    for patch in patch_files:
        apply_patch(patch, target_dir)

def main():
    libffi_path = argparse.ArgumentParser()
    libffi_path.add_argument('--gen-dir', help='generate path of log', required=True)
    libffi_path.add_argument('--source-dir', help='generate path of log', required=True)
    args = libffi_path.parse_args()
    tar_file_path = os.path.join(args.source_dir, "libffi-3.4.2.tar.gz")
    target_dir = os.path.join(args.gen_dir, "libffi-3.4.2")
    
    untar_file(tar_file_path, args.gen_dir)
    move_file(args.source_dir, target_dir)
    do_patch(target_dir)
    return 0

if __name__ == '__main__':
    sys.exit(main())