# -*- coding: UTF-8 -*-
#  Copyright 2020 Zhejiang Lab. 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
from watchdog.observers.polling import PollingObserver
from watchdog.events import *
from python_io.logfile_loader import Trace_Thread
from .logfile_utils import *


class Watcher_Handler(FileSystemEventHandler):
    def __init__(self, run, uid, cache_path):
        self.runname = run
        self.uid = uid
        self.cache_path = cache_path

    def on_created(self, event):
        print("创建--> %s" % event.src_path)
        filename = Path(event.src_path)
        if filename.is_file():
            if is_available_flie(event.src_path):
                current_size = os.path.getsize(event.src_path)
                Trace_Thread(self.runname, filename, current_size,
                             self.uid, self.cache_path).start()
            else:
                print("非有效日志文件 %s" % filename.name)
        else:
            pass


def start_run_watcher(run, path, uid, cache_path):
    event_handler = Watcher_Handler(run, uid, cache_path)
    observer = PollingObserver()
    observer.schedule(event_handler, path, recursive=False)
    observer.start()