import datetime
import time
from pathlib import Path
from random import Random
import base64
import ipdb
import requests
import OpenSSL.crypto as ct
from base64 import encodebytes
import simplejson as json
from django.core import serializers
from django.utils import timezone
from pyipip import IPIPDatabase

from model.models import iotdeviceInfoModel, UidRtspModel


# 复用性且公用较高封装代码在这
class CommonService:
    # 生成随机数
    @staticmethod
    def encrypt_data(randomlength=8, number=False):
        str = ''
        if number == False:
            characterSet = 'AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsT' \
                           'tUuVvWwXxYyZz0123456789'
        else:
            characterSet = '0123456789'

        length = len(characterSet) - 1

        random = Random()
        for index in range(randomlength):
            str += characterSet[random.randint(0, length)]
        return str

    # 加密
    # @staticmethod
    def encrypt_pwd(self, userPwd):
        for i in range(1, 4):
            if i == 1:
                userPwd = self.RandomStr(3, False)+userPwd+self.RandomStr(3, False)
                userPwd = base64.b64encode(str(userPwd).encode("utf-8")).decode('utf8')
            if i == 2:
                userPwd = self.RandomStr(2, False)+str(userPwd)+self.RandomStr(2, False)
                userPwd = base64.b64encode(str(userPwd).encode("utf-8")).decode('utf8')
            if i == 3:
                userPwd = self.RandomStr(1, False)+str(userPwd)+self.RandomStr(1, False)
                userPwd = base64.b64encode(str(userPwd).encode("utf-8")).decode('utf8')
        return userPwd

    # 解密
    @staticmethod
    def decode_pwd(password):
        for i in range(1, 4):
            if i == 1:
                # 第一次先解密
                password = base64.b64decode(password)
                password = password.decode('utf-8')
                # 截去第一位，最后一位
                password = password[1:-1]
            if i == 2:
                # 第2次先解密
                password = base64.b64decode(password)
                password = password.decode('utf-8')
                # 去前2位，后2位
                password = password[2:-2]
            if i == 3:
                # 第3次先解密
                password = base64.b64decode(password)
                password = password.decode('utf-8')
                # 去前3位，后3位
                password = password[3:-3]
        return password

    # 生成随机字符串
    @staticmethod
    def RandomStr(randomlength=8, number=False):
        str = ''
        if number == False:
            characterSet = 'AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsT' \
                           'tUuVvWwXxYyZz0123456789'
        else:
            characterSet = '0123456789'

        length = len(characterSet) - 1

        random = Random()
        for index in range(randomlength):
            str += characterSet[random.randint(0, length)]

        return str

    @staticmethod
    def query_serial_with_uid(uid):
        # 根据uid查询序列号,存在则返回序列号,否则返uid
        uid_qs = UidRtspModel.objects.filter(uid=uid).values('serial_number')
        if uid_qs.exists():
            serial_number = uid_qs[0]['serial_number']
            if serial_number:
                return serial_number
        return uid

    @staticmethod
    def req_publish_mqtt_msg(identification_code, topic_name, msg, qos=1):
        """
        通用发布MQTT消息函数
        @param identification_code: 标识码
        @param topic_name: 主题名
        @param msg: 消息内容
        @param qos: mqtt qos等级
        @return: boolean
        """
        if not all([identification_code, topic_name]):
            return False

        if identification_code.endswith('11L'):
            thing_name = 'LC_' + identification_code
        else:
            thing_name = 'Ansjer_Device_' + identification_code

        try:
            # 获取数据组织将要请求的url
            iot = iotdeviceInfoModel.objects.filter(
                thing_name=thing_name).values(
                'endpoint', 'token_iot_number')
            if not iot.exists():
                return False
            endpoint = iot[0]['endpoint']
            Token = iot[0]['token_iot_number']

            # api doc: https://docs.aws.amazon.com/zh_cn/iot/latest/developerguide/http.html
            # url: https://IoT_data_endpoint/topics/url_encoded_topic_name?qos=1
            # post请求url发布MQTT消息
            url = 'https://{}/topics/{}?qos={}'.format(endpoint, topic_name, qos)
            authorizer_name = 'Ansjer_Iot_Auth'
            signature = CommonService.rsa_sign(Token)  # Token签名
            headers = {
                'x-amz-customauthorizer-name': authorizer_name,
                'Token': Token,
                'x-amz-customauthorizer-signature': signature}
            r = requests.post(url=url, headers=headers, json=msg, timeout=2)
            if r.status_code == 200:
                res = r.json()
                if res['message'] == 'OK':
                    return True
                return False
            else:
                return False
        except Exception as e:
            return False

    @staticmethod
    def rsa_sign(Token):
        # 私钥签名Token
        if not Token:
            return ''
        private_key_file = '''-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----'''
        # 使用密钥文件方式
        # private_key_file_path = os.path.join(BASE_DIR, 'static/iotCore/private.pem')#.replace('\\', '/')
        # private_key_file = open(private_key_file_path, 'r')
        private_key = ct.load_privatekey(ct.FILETYPE_PEM, private_key_file)
        signature = ct.sign(private_key, Token.encode('utf8'), 'sha256')
        signature = encodebytes(signature).decode('utf8').replace('\n', '')
        # print('signature:', signature)
        return signature