import datetime
import json
import os

from websocket_server import WebsocketServer

from api.api_app import open_file_by_wps
from config import args
from tools.serve_client import server_client
from tools.check import is_file_open_in_wps
from tools.logger_handle import logger

def ws_send(client, server, data):
    server.send_message(client, json.dumps(data))


def on_message(client, server, data):
    '''
    data:{
            'option':'download_and_open_file',
            'params':{
                'file_id':'********',
                'is_template':0
                }
            }
    '''
    logger.info(f'reve data: {data}')
    try:
        data = json.loads(data)
    except Exception:
        return ws_send({'code':2003, 'msg':'参数错误'})

    if data.get('option') == 'download_and_open_file':
        file_id = data['params'].get('file_id')
        is_template = data['params'].get('is_template')
        # 判断是否为exe模式执行

        if is_template:
            file_info = server_client.get_template_file_info(file_id)
            time_str = datetime.datetime.now().strftime('%Y-%m-%dT%H-%M-%S')
            local_path = os.path.join(args['work_path'],
                                      f'{file_info["name"]}({time_str}).{file_info["nameSuffix"]}')

            if server_client.download_template(file_info['fileLink'], local_path):
                return ws_send(client, server, open_file_by_wps(local_path))
            else:
                return ws_send(client, server, {'code': 3006, 'msg': '文件不存在'})

        file_info = server_client.get_file_info(file_id)
        if not file_info:
            return ws_send(client, server, {'code': 3006, 'msg': '文件不存在'})
        logger.info(f'args:{args}, file_info:{file_info}')
        local_file = os.path.join(args['work_path'], file_info['filePath'].replace('/', '_'))

        # 判断本地是否存在已下载的同名文件
        if not os.path.exists(local_file) or not os.path.exists(local_file + '.metadata.json'):
            server_client.download_file(file_info, args['work_path'])

            return ws_send(client, server, open_file_by_wps(local_file))

        # 判断本地文件是否被打开
        if is_file_open_in_wps(local_file):
            return ws_send(client, server, {'code': 1000, 'msg': '检测到文件已被打开'})

        # 判断本地文件和线上文件是否一致
        local_file_metadata = server_client.load_metadata(local_file)
        if local_file_metadata['update_time'] == file_info['updateTime']:
            return ws_send(client, server, open_file_by_wps(local_file))

        if local_file_metadata['md5'] == server_client.get_file_md5(local_file):
            server_client.download_file(file_info, args['work_path'])

            return ws_send(client, server, open_file_by_wps(local_file))

        return ws_send(client, server, {'code': 2002, 'msg': '检测到远程文件已经更新本地文件也发生改动，终止操作'})


def start_ws_server():
    ws_server = WebsocketServer(host='0.0.0.0', port=5856)
    ws_server.set_fn_message_received(on_message)

    from tools.logger_handle import logger
    logger.info('ws server start')
    ws_server.run_forever()


if __name__ == '__main__':
    start_ws_server()