# -*- coding: utf-8 -*-
# !/usr/bin/env python

import os
import sys

PROJECT_ROOT = os.path.join(os.path.abspath(os.path.split(os.path.realpath(__file__))[0] + "/.."), '..')
sys.path.insert(0, PROJECT_ROOT)

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'configs.testing')

from script.base import init_env

init_env(False)

from apps.web.device.models import Device
from apps.web.core.networking import MessageSender


def is_online(devNo):
    return bool(Device.get_dev(devNo).online)


def change_ip_and_record(devNo, debug):
    if debug:
        print devNo
    else:
        device = Device.get_dev(devNo)
        serverIp, _ = device.server.split(":")
        # IP 是写死的 需要切换
        MessageSender.send(
            device = device,
            cmd = 202,
            payload = {
                "IMEI": device.devNo,
                "addr_set": {"ip1": serverIp, "port1": 1884}
            },
            timeout = 5
        )

    with open("do_change_ip.txt", "a") as f:
        f.write("{}\n".format(devNo))


def run(debug):
    if os.path.exists("do_change_ip.txt"):
        with open("do_change_ip.txt") as f:
            changedDevs = [_d.strip() for _d in f.readlines()]
    else:
        changedDevs = list()
    index = len(changedDevs)
    curIndex = index

    # 总量到了直接退出
    if index >= 10000:
        return

    devices = Device.objects.filter(server__endswith = ":1883", ownerId__ne = "")

    for _dev in devices:

        # 不需要特别关注时间的 筛选放到内存中去处理
        if _dev.devNo in changedDevs:
            continue

        if not is_online(_dev.devNo):
            continue

        try:
            change_ip_and_record(_dev.devNo, debug)
        except Exception as e:
            print "{}-{}".format(_dev.devNo, e)
        else:
            index += 1

        # 一次最多发1000条
        if index - curIndex >= 1000:
            break


if __name__ == '__main__':
    # 修改 设备的IP端口 当debug为 True的时候 只记录 不发生实际修改
    # 每次运行最大执行设备数量为1000个 执行完毕之后自动停止 从 上次停止的设备号开始继续执行
    # 当执行设备到达10000的时候 执行程序不做任何事情
    # 执行设备号 记录在当前文件夹的 do_change_ip.txt
    run(debug = True)