# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
#
# 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 os
import sys
import subprocess
import shlex
import psutil
import time
"""
完整的index库如下:
root_path/            # 库存储目录
|-- image_list.txt     # 图像列表，每行：image_path label。由前端生成及修改。后端只读
|-- features.pkl       # 建库之后，保存的embedding向量，后端生成，前端无需操作
|-- images             # 图像存储目录，由前端生成及增删查等操作。后端只读
|   |-- md5.jpg
|   |-- md5.jpg
|   |-- ……
|-- index              # 真正的生成的index库存储目录，后端生成及操作，前端无需操作。
|   |-- vector.index   # faiss生成的索引库
|   |-- id_map.pkl     # 索引文件
"""

if __name__ == '__main__':
    if not (len(sys.argv) == 3 or len(sys.argv) == 5):
        print("start example:")
        print("   python index_manager.py -c xxx.yaml")
        print("   python index_manager.py -c xxx.yaml -p port")
    yaml_path = sys.argv[2]
    if len(sys.argv) == 5:
        port = sys.argv[4]
    else:
        port = 8000
    assert int(port) > 1024 and int(
        port) < 65536, "The port should be bigger than 1024 and \
            smaller than 65536"

    try:
        ip = socket.gethostbyname(socket.gethostname())
    except:
        ip = '127.0.0.1'
    server_cmd = "python server.py -c {} -o ip={} -o port={}".format(yaml_path,
                                                                     ip, port)
    server_proc = subprocess.Popen(shlex.split(server_cmd))
    client_proc = subprocess.Popen(
        ["python", "client.py", "{} {}".format(ip, port)])
    try:
        while psutil.Process(client_proc.pid).status() == "running":
            time.sleep(0.5)
    except:
        pass

    client_proc.terminate()
    server_proc.terminate()