#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import hashlib
import json
import time
import uuid

import boto3
from django.views import View

from Controller.DeviceConfirmRegion import Device_Region
from Model.models import Device_User, Device_Info, iotdeviceInfoModel, UIDCompanySerialModel, \
    SerialNumberModel
from Object.IOTCore.IotObject import IOTClient
from Object.ResponseObject import ResponseObject
from Service.CommonService import CommonService


class IotCoreView(View):

    def get(self, request, *args, **kwargs):
        request.encoding = 'utf-8'
        request_dict = request.GET
        operation = kwargs.get('operation', None)
        return self.validate(operation, request_dict, request)

    def post(self, request, *args, **kwargs):
        request.encoding = 'utf-8'
        request_dict = request.POST
        operation = kwargs.get('operation', None)
        return self.validate(operation, request_dict, request)

    def validate(self, operation, request_dict, request):

        response = ResponseObject()

        if operation == 'createKeysAndCertificate':
            return self.create_keys_and_certificate(request_dict, response, request)
        else:
            return response.json(404)


    # CVM注册  ：正使用
    def create_keys_and_certificate(self, request_dict, response, request):
        serial_number = request_dict.get('serial_number', None)
        serial_number_code = request_dict.get('serial_number_code', None)
        token = request_dict.get('token', None)
        time_stamp = request_dict.get('time_stamp', None)
        device_version = request_dict.get('device_version', None).replace('.', '_') # 物品组命名不能包含'.'
        language = request_dict.get('language', None)

        if serial_number and token and time_stamp and serial_number_code and device_version and language:
            uid_code = CommonService.decode_data(serial_number_code)
            token = int(CommonService.decode_data(token))
            time_stamp = int(time_stamp)

            now_time = int(time.time())
            distance = now_time - time_stamp
            thingGroup = device_version + '_' + language

            # if token != time_stamp and distance > 600: 暂时去掉延时
            # if token != time_stamp or serial_number != serial_number_code :
            #     return response.json(404)

            serial = serial_number[0:6]

            iotqs = iotdeviceInfoModel.objects.filter(serial_number__serial_number=serial)

            # 判断设备是否已注册证书
            if not iotqs.exists():
                ip = CommonService.get_ip_address(request)
                region_id = Device_Region().get_device_region(ip)

                iotClient = IOTClient(region_id)
                res = iotClient.create_keys_and_certificate(serial, thingGroup)
                nowTime = int(time.time())
                token_iot_number = hashlib.md5((str(uuid.uuid1()) + str(nowTime)).encode('utf-8')).hexdigest()

                sn = SerialNumberModel.objects.get(serial_number=serial)

                iotdeviceInfoModel.objects.create(serial_number=sn,
                                                  endpoint=res[0]['endpoint'],
                                                  certificate_id=res[0]['certificateId'],
                                                  certificate_pem=res[0]['certificatePem'],
                                                  public_key=res[0]['publicKey'],
                                                  private_key=res[0]['privateKey'],
                                                  thing_name=res[1]['ThingName'],
                                                  token_iot_number=token_iot_number
                                                  )
                res = {
                    'certificateId': res[0]['certificateId'],
                    'certificatePem': res[0]['certificatePem'],
                    'publicKey': res[0]['publicKey'],
                    'privateKey': res[0]['privateKey'],
                    'endpoint': res[0]['endpoint']
                }
                return response.json(0, {'res': res})
            else:

                iot = iotqs[0]
                res = {
                    'certificateId': iot.certificate_id,
                    'certificatePem': iot.certificate_pem,
                    'publicKey': iot.public_key,
                    'privateKey': iot.private_key,
                    'endpoint': iot.endpoint
                }
                # print('此设备已注册证书')
                return response.json(0, {'res': res})
        else:
            return response.json(444)