ASJServer/Controller/AWS/KVSController.py

# -*- coding: utf-8 -*-
"""
@Author ： Rocky
@Time ： 2022/10/18 9:48
@File ：KVSController.py
"""
import base64
import hashlib
import json
import time
import uuid
import datetime

import boto3
import botocore
import requests
from django.http import HttpResponse
from django.views import View

from Model.models import KVS, Device_User, Device_Info
from Object.AWS.AmazonKinesisVideoUtil import AmazonKinesisVideoObject, AmazonKVAMObject
from Object.RedisObject import RedisObject
from Object.ResponseObject import ResponseObject
from Ansjer.config import ACCESS_KEY_ID, SECRET_ACCESS_KEY, SERVER_DOMAIN, LOGGER, KVS_REGION
from Object.TokenObject import TokenObject
from botocore.auth import SigV4Auth
from botocore.awsrequest import AWSRequest
from botocore.credentials import Credentials

from Service.CommonService import CommonService


class UserRelatedView(View):
    def get(self, request, *args, **kwargs):
        request.encoding = 'utf-8'
        operation = kwargs.get('operation')
        return self.validation(request.GET, operation, request)

    def post(self, request, *args, **kwargs):
        request.encoding = 'utf-8'
        operation = kwargs.get('operation')
        return self.validation(request.POST, operation, request)

    def validation(self, request_dict, operation, request):
        response = ResponseObject()
        if operation == 'generate-qr-code':  # 网页生成二维码
            return self.generate_qr_code(response)
        elif operation == 'get-scanning-status':  # 确认app是否扫码
            return self.get_scanning_status(request_dict, response)
        elif operation == 'web-login':  # 网页登录
            return self.web_login(request_dict, response)
        elif operation == 'pc-login':  # pc端登录
            return self.pc_login(request_dict, response)
        elif operation == 'confirm-login':  # app确认登录
            return self.confirm_login(request_dict, response)
        else:
            tko = TokenObject(
                request.META.get('HTTP_AUTHORIZATION'),
                returntpye='pc')
            if tko.code != 0:
                return response.json(tko.code)
            response.lang = tko.lang
            user_id = tko.userID
            if operation == 'get-device':  # 获取设备列表
                return self.get_device(response, user_id)
            else:
                return response.json(404)

    @staticmethod
    def get_user_info(user_id):
        """
        获取用户信息
        @param user_id: 用户id
        @return: response
        """
        device_user_qs = Device_User.objects.filter(userID=user_id).values('NickName', 'userIconPath',
                                                                           'userIconUrl')
        if not device_user_qs.exists():
            user_icon_url = ''
            nick_name = ''
        else:
            users = device_user_qs.first()
            nick_name = users['NickName']
            user_icon_path = str(users['userIconPath'])
            if user_icon_path:
                user_icon_path = user_icon_path.replace('static/', '').replace('\\', '/')
                user_icon_url = SERVER_DOMAIN + 'account/getAvatar/' + user_icon_path
            else:
                user_icon_url = ''
        return user_icon_url, nick_name

    @staticmethod
    def generate_qr_code(response):
        """
        网页生成二维码
        @param response: 响应对象
        @return: response
        """
        nwo_time = time.time()
        redis_obj = RedisObject()
        try:
            uuid_number = hashlib.md5((str(uuid.uuid1()) + str(nwo_time)).encode('utf-8')).hexdigest()
            flag = redis_obj.set_ex_data(uuid_number, 0, 300)  # redis记录uuid，状态为生成二维码
            res = {'type': 'autologin', 'id': uuid_number}
            if flag:
                return response.json(0, res)
            else:
                return response.json(119)
        except Exception as e:
            print(e)
            return response.json(500)

    @staticmethod
    def get_scanning_status(request_dict, response):
        """
        获取app扫码状态
        @param request_dict: 请求参数
        @request_dict serial_number: 序列号
        @param response: 响应对象
        @return: response
        """
        uuid_number = request_dict.get('uuid', None)
        if not uuid_number:
            return response.json(444, {'error param': 'uuid'})
        try:
            redis_obj = RedisObject()
            status = redis_obj.get_data(uuid_number)
            if status is False:
                return response.json(119)
            elif status == '1' or status == '2':
                res = {'status': 1}  # 已扫码
            else:
                res = {'status': 0}  # 未扫码
            return response.json(0, res)
        except Exception as e:
            print(e)
            return response.json(500)

    @staticmethod
    def pc_login(request_dict, response):
        """
        pc端登录
        @param request_dict: 请求参数
        @request_dict serial_number: 序列号
        @param response: 响应对象
        @return: response
        """
        uuid_number = request_dict.get('uuid', None)
        if not uuid_number:
            return response.json(444, {'error param': 'uuid'})
        try:
            redis_obj = RedisObject()
            status = redis_obj.get_data(uuid_number)
            token = redis_obj.get_data(uuid_number + 'token')
            if status is False or token is False:
                return response.json(119)
            elif status == '2':  # 已登录
                token_obj = TokenObject(token)
                response.lang = token_obj.lang
                if token_obj.code != 0:
                    return response.json(token_obj.code)
                user_id = token_obj.userID
                user_icon_url, nick_name = UserRelatedView.get_user_info(user_id)
                res = {'status': 1, 'userIconUrl': user_icon_url, 'nickName': nick_name, 'token': token}
                redis_obj.del_data(uuid_number)
                redis_obj.del_data(uuid_number + 'token')
            else:  # 未登录
                res = {'status': 0}
            return response.json(0, res)
        except Exception as e:
            print(e)
            return response.json(500)

    @staticmethod
    def web_login(request_dict, response):
        """
        网页登录
        @param request_dict: 请求参数
        @request_dict serial_number: 序列号
        @param response: 响应对象
        @return: response
        """
        uuid_number = request_dict.get('uuid', None)
        confirm = request_dict.get('confirm', None)
        if not all([uuid_number, confirm]):
            return response.json(444, {'error param': 'uuid or confirm'})
        try:
            redis_obj = RedisObject()
            if confirm == '1':  # 取消登录
                redis_obj.del_data(uuid_number)
                redis_obj.del_data(uuid_number + 'token')
                return response.json(0)
            token = redis_obj.get_data(uuid_number + 'token')
            ttl = redis_obj.get_ttl(uuid_number)
            if token is False or ttl <= 0:
                return response.json(119)
            result = redis_obj.set_ex_data(uuid_number, 2, ttl)  # 修改uuid状态为已登录
            if result is False:
                return response.json(119)
            return response.json(0)
        except Exception as e:
            print(e)
            return response.json(500)

    @staticmethod
    def confirm_login(request_dict, response):
        """
        app确认登录
        @param request_dict: 请求参数
        @request_dict serial_number: 序列号
        @param response: 响应对象
        @return: response
        """
        uuid_number = request_dict.get('uuid', None)
        token = request_dict.get('token', None)
        if not all([uuid_number, token]):
            return response.json(444, {'error param': 'uuid or token'})
        redis_obj = RedisObject()
        try:
            status = redis_obj.get_data(uuid_number)
            ttl = redis_obj.get_ttl(uuid_number)
            if status is False or ttl <= 0:
                return response.json(119)
            result1 = redis_obj.set_ex_data(uuid_number, 1, ttl)  # 修改uuid状态为已扫码
            result2 = redis_obj.set_ex_data(uuid_number + 'token', token, ttl)
            if result1 is False or result2 is False:
                return response.json(119)
            return response.json(0)
        except Exception as e:
            print(e)
            return response.json(500)

    @staticmethod
    def get_device(response, user_id):
        """
        获取设备列表
        @param response: 响应对象
        @param user_id: 用户id
        @return: response
        """
        try:
            device_qs = Device_Info.objects.filter(userID=user_id).values('serial_number', 'NickName')
            return response.json(0, list(device_qs))
        except Exception as e:
            print(e)
            return response.json(500)


class KVSView(View):
    def get(self, request, *args, **kwargs):
        request.encoding = 'utf-8'
        operation = kwargs.get('operation')
        return self.validation(request.GET, request, operation)

    def post(self, request, *args, **kwargs):
        request.encoding = 'utf-8'
        operation = kwargs.get('operation')
        return self.validation(request.POST, request, operation)

    def validation(self, request_dict, request, operation):
        response = ResponseObject()
        if operation == 'create-media':  # 创建视频流
            return self.create_media(request_dict, response)
        elif operation == 'update-data-retention':  # 修改视频流数据保留时间
            return self.update_data_retention(request_dict, response)
        elif operation == 'get-sts-token':  # 获取临时token
            return self.get_sts_token(request_dict, response)
        elif operation == 'createSignalChannel':  # 创建通道
            return self.create_signal_channel(request_dict, response)
        elif operation == 'SendAlexaOfferToMaster':  # 发送Alexa offer
            return self.send_alexa_offer_to_master(request_dict, response)
        elif operation == 'deleteSignalChannel':  # 删除通道
            return self.delete_signal_channel(request_dict, response)
        else:
            # tko = TokenObject(request.META.get('HTTP_AUTHORIZATION'))
            # if tko.code != 0:
            #     return response.json(tko.code)
            # response.lang = tko.lang
            # user_id = tko.userID
            if operation == 'get-device-midea-list':  # 获取设备列表
                return self.get_device_midea_list(request_dict, response)
            elif operation == 'get-hls-midea':  # 获取视频播放地址
                return self.get_hls_midea_url(request_dict, response)
            elif operation == 'download-clip':  # 获取视频播放地址
                return self.download_clip(request_dict, response)
            else:
                return response.json(404)

    @staticmethod
    def create_media(request_dict, response):
        """
        创建视频流
        @param request_dict: 请求参数
        @request_dict serial_number: 序列号
        @param response: 响应对象
        @return: response
        """
        serial_number = request_dict.get('serial_number', None)

        try:
            kvs_qs = KVS.objects.filter(stream_name=serial_number)
            if kvs_qs.exists():
                return response.json(174)
            kinesis_video_obj = AmazonKinesisVideoObject(
                aws_access_key_id=ACCESS_KEY_ID,
                secret_access_key=SECRET_ACCESS_KEY,
                region_name=KVS_REGION
            )
            stream_arn = kinesis_video_obj.create_stream(stream_name=serial_number)
            if stream_arn:
                now_time = int(time.time())
                KVS.objects.create(stream_name=serial_number, stream_arn=stream_arn, created_time=now_time,
                                   updated_time=now_time)
                return response.json(0)
            else:
                return response.json(178)
        except Exception as e:
            print(e)
            return response.json(500)

    @staticmethod
    def update_data_retention(request_dict, response):
        """
        修改视频流数据保留时间
        @param request_dict: 请求参数
        @request_dict serial_number: 序列号
        @request_dict operation: 操作,增加/减少
        @request_dict data_retention_change_in_hours: 修改的时间
        @param response: 响应对象
        @return: response
        """
        serial_number = request_dict.get('serial_number', None)
        operation = request_dict.get('operation', None)
        data_retention_change_in_hours = request_dict.get('data_retention_change_in_hours', None)

        try:
            kvs_qs = KVS.objects.filter(stream_name=serial_number)
            if not kvs_qs.exists():
                return response.json(173)
            kinesis_video_obj = AmazonKinesisVideoObject(
                aws_access_key_id=ACCESS_KEY_ID,
                secret_access_key=SECRET_ACCESS_KEY,
                region_name=KVS_REGION
            )
            now_time = int(time.time())
            data_retention_change_in_hours = int(data_retention_change_in_hours)
            kinesis_video_obj.update_data_retention(stream_name=serial_number, operation=operation,
                                                    data_retention_change_in_hours=data_retention_change_in_hours)
            kvs_qs.update(data_retention_in_hours=data_retention_change_in_hours, updated_time=now_time)
            return response.json(0)
        except Exception as e:
            print(e)
            return response.json(500)

    @staticmethod
    def get_hls_midea_url(request_dict, response):
        """
        获取视频播放地址
        @param request_dict: 请求参数
        @request_dict serial_number: 序列号
        @request_dict startTime: 开始时间
        @request_dict endTime: 结束时间
        @request_dict playMode: 播放模式
        @param response: 响应对象
        @return: response
        """
        serial_number = request_dict.get('serial_number', None)
        start_time = request_dict.get('startTime', None)
        end_time = request_dict.get('endTime', None)
        play_mode = request_dict.get('playMode', None)
        if not all([serial_number, start_time, end_time, play_mode]):
            return response.json(444)
        start_time = datetime.datetime.fromtimestamp(int(start_time)) - datetime.timedelta(hours=8)
        end_time = datetime.datetime.fromtimestamp(int(end_time)) - datetime.timedelta(hours=8)
        play_mode = int(play_mode)
        play_mode = 'ON_DEMAND' if play_mode == 0 else 'LIVE_REPLAY'
        try:
            # kvs_qs = KVS.objects.filter(stream_name=serial_number)
            # if not kvs_qs.exists():
            #     return response.json(174)
            kinesis_video_obj = AmazonKVAMObject(
                aws_access_key_id='AKIA2E67UIMD45Y3HL53',
                secret_access_key='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',
                region_name='us-east-1',
                stream_name=serial_number,
                api_name='GET_HLS_STREAMING_SESSION_URL'
            )
            hls_streaming_session_url = kinesis_video_obj.get_hls_streaming_session_url(serial_number, start_time,
                                                                                        end_time, play_mode)
            return response.json(0, {"HlsStreamingSessionUrl": hls_streaming_session_url})
        except Exception as e:
            print(e)
            return response.json(500, 'error_line:{}, error_msg:{}'.format(e.__traceback__.tb_lineno, repr(e)))

    @staticmethod
    def get_device_midea_list(request_dict, response):
        """
        获取视频播放列表
        @param request_dict: 请求参数
        @request_dict serial_number: 序列号
        @request_dict startTime: 开始时间
        @request_dict endTime: 结束时间
        @param response: 响应对象
        @return: response
        """
        serial_number = request_dict.get('serial_number', None)
        start_time = request_dict.get('startTime', None)
        end_time = request_dict.get('endTime', None)
        page = request_dict.get('page', None)
        size = request_dict.get('size', None)
        if not all([serial_number, start_time, end_time, page, size]):
            return response.json(444)
        page = int(page)
        size = int(size)
        start_time = datetime.datetime.fromtimestamp(int(start_time)) - datetime.timedelta(hours=8)
        end_time = datetime.datetime.fromtimestamp(int(end_time)) - datetime.timedelta(hours=8)
        try:
            # kvs_qs = KVS.objects.filter(stream_name=serial_number)
            # if not kvs_qs.exists():
            #     return response.json(174)
            kinesis_fragments_obj = AmazonKVAMObject(
                aws_access_key_id='AKIA2E67UIMD45Y3HL53',
                secret_access_key='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',
                region_name='us-east-1',
                stream_name=serial_number,
                api_name='LIST_FRAGMENTS'
            )
            kinesis_images_obj = AmazonKVAMObject(
                aws_access_key_id='AKIA2E67UIMD45Y3HL53',
                secret_access_key='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',
                region_name='us-east-1',
                stream_name=serial_number,
                api_name='GET_IMAGES'
            )
            stream_list = kinesis_fragments_obj.get_list_fragments(serial_number, start_time, end_time)
            total_page = len(stream_list)
            stream_list = stream_list[(page - 1) * size:page * size]
            for item in stream_list:
                temp_start_time = (item['startTime'] - datetime.timedelta(hours=8)).replace(
                    tzinfo=datetime.timezone.utc)
                temp_end_time = temp_start_time + datetime.timedelta(seconds=300)
                item['image'] = kinesis_images_obj.get_images(serial_number, temp_start_time, temp_end_time)
                item['startTime'] = int(item['startTime'].timestamp())
                item['endTime'] = int(item['endTime'].timestamp())
            res = {
                'totalPage': total_page,
                'fragments': stream_list
            }
            return response.json(0, res)
        except Exception as e:
            print(e)
            return response.json(500, 'error_line:{}, error_msg:{}'.format(e.__traceback__.tb_lineno, repr(e)))

    @staticmethod
    def download_clip(request_dict, response):
        """
        获取视频播放地址
        @param request_dict: 请求参数
        @request_dict serial_number: 序列号
        @request_dict startTime: 开始时间
        @request_dict endTime: 结束时间
        @param response: 响应对象
        @return: response
        """
        serial_number = request_dict.get('serial_number', None)
        start_time = request_dict.get('startTime', None)
        end_time = request_dict.get('endTime', None)
        if not all([serial_number, start_time, end_time]):
            return response.json(444)
        start_time = datetime.datetime.fromtimestamp(int(start_time)) - datetime.timedelta(hours=8)
        end_time = datetime.datetime.fromtimestamp(int(end_time)) - datetime.timedelta(hours=8)
        try:
            # kvs_qs = KVS.objects.filter(stream_name=serial_number)
            # if not kvs_qs.exists():
            #     return response.json(174)
            kinesis_video_obj = AmazonKVAMObject(
                aws_access_key_id='AKIA2E67UIMD45Y3HL53',
                secret_access_key='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',
                region_name='us-east-1',
                stream_name=serial_number,
                api_name='GET_CLIP'
            )
            clip_obj, clip_size = kinesis_video_obj.get_clip(serial_number, start_time, end_time)
            res = HttpResponse(clip_obj.read())
            res["content_type"] = "video/mp4"
            res["Content-Disposition"] = "attachment;filename=video.mp4"
            res['Content-Length'] = str(clip_size)
            return res
        except Exception as e:
            print(e)
            return response.json(500, 'error_line:{}, error_msg:{}'.format(e.__traceback__.tb_lineno, repr(e)))

    @staticmethod
    def get_sts_token(request_dict, response):
        """
        获取临时token
        @param request_dict: 请求参数
        @request_dict uid: 设备uid
        @param response: 响应对象
        @return: response
        """
        uid = request_dict.get('uid', None)
        # if not all([]):
        #     return response.json(444)
        try:
            sts_client_conn = boto3.client(
                'sts',
                aws_access_key_id=ACCESS_KEY_ID,
                aws_secret_access_key=SECRET_ACCESS_KEY,
                region_name=KVS_REGION
            )
            sts_obj = sts_client_conn.get_session_token(DurationSeconds=129600)
            res = {
                'AccessKeyId': sts_obj['Credentials']['AccessKeyId'],
                'AccessKeySecret': sts_obj['Credentials']['SecretAccessKey'],
                'SessionToken': sts_obj['Credentials']['SessionToken'],
                'Expiration': str(sts_obj['Credentials']['Expiration'])
            }
            return response.json(0, res)
        except Exception as e:
            print(e)
            return response.json(500, 'error_line:{}, error_msg:{}'.format(e.__traceback__.tb_lineno, repr(e)))

    @staticmethod
    def create_signal_channel(request_dict, response):
        """
        创建信号通道
        @param request_dict: 请求参数
        @request_dict serial: 序列号
        @param response: 响应对象
        @return: response
        """
        serial = request_dict.get('serial', None)
        if not all([serial]):
            return response.json(444)
        try:
            # 已有数据直接返回
            res = {
                'region': KVS_REGION,
                'role_alias': 'KvsCameraIoTRoleAlias'
            }
            kvs = KVS.objects.filter(channel_name=serial)
            if kvs.exists():
                return response.json(0, res)

            kinesis_video_obj = AmazonKinesisVideoObject(
                aws_access_key_id=ACCESS_KEY_ID,
                secret_access_key=SECRET_ACCESS_KEY,
                region_name=KVS_REGION
            )
            channel_arn = kinesis_video_obj.create_signaling_channel(channel_name=serial)
            now_time = int(time.time())
            KVS.objects.create(
                channel_name=serial, channel_arn=channel_arn, channel_ttl=60,
                created_time=now_time, updated_time=now_time
            )
            return response.json(0, res)
        except Exception as e:
            return response.json(500, 'error_line:{}, error_msg:{}'.format(e.__traceback__.tb_lineno, repr(e)))

    @classmethod
    def send_alexa_offer_to_master(cls, request_dict, response):
        """
        发送Alexa offer
        @param request_dict: 请求参数
        @request_dict serial: 序列号
        @param response: 响应对象
        @return: response
        """
        uid = request_dict.get('uid', None)
        sdp_offer = request_dict.get('sdp_offer', None)
        if not all([uid, sdp_offer]):
            return response.json(444)
        if uid == '517J385BNUGP3CPP111A':
            uid = 'NUWGTV5TUK8G8VSS111A'
        try:
            serial = CommonService.get_serial_number_by_uid(uid)
            kvs_qs = KVS.objects.filter(stream_name=serial).values('channel_arn')
            if not kvs_qs.exists():
                return response.json(173)
            channel_arn = kvs_qs[0]['channel_arn']

            kinesis_video_obj = AmazonKinesisVideoObject(
                aws_access_key_id=ACCESS_KEY_ID,
                secret_access_key=SECRET_ACCESS_KEY,
                region_name=KVS_REGION
            )
            endpoint = kinesis_video_obj.get_signaling_channel_endpoint(channel_arn)
            url = '{}/v1/send-alexa-offer-to-master'.format(endpoint)
            # 构造请求 body
            client_id = hashlib.md5((str(uuid.uuid1()) + str(int(time.time()))).encode('utf-8')).hexdigest()
            # offer转base64
            offer = {
                'type': 'offer',
                'sdp': sdp_offer
            }
            offer = cls.dict_to_base64(offer)
            LOGGER.info('offer:{}'.format(offer))
            payload = {
                'ChannelARN': channel_arn,
                'SenderClientId': client_id,
                'MessagePayload': offer
            }

            # 构造 AWSRequest 并签名
            req = AWSRequest(method='POST', url=url, data=json.dumps(payload))
            credentials = Credentials(ACCESS_KEY_ID, SECRET_ACCESS_KEY)
            SigV4Auth(credentials, 'kinesisvideo', KVS_REGION).add_auth(req)

            # 使用 requests 发送签名后的请求
            headers = dict(req.headers)
            headers['Content-Type'] = 'application/json'

            r = requests.post(url, headers=headers, data=json.dumps(payload))
            assert r.status_code == 200
            LOGGER.info('SendAlexaOfferToMaster响应: {}'.format(r.json()))
            sdp_answer = r.json()['Answer']
            assert sdp_answer
            # answer转字典
            sdp_answer = cls.base64_to_dict(sdp_answer)
            sdp_answer = sdp_answer['sdp']
            res = {
                'sdp_answer': sdp_answer
            }
            return response.json(0, res)
        except Exception as e:
            return response.json(500, 'error_line:{}, error_msg:{}'.format(e.__traceback__.tb_lineno, repr(e)))

    @staticmethod
    def dict_to_base64(data_dict: dict) -> str:
        # 手动构建JSON字符串，避免自动转义
        json_str = '{\n  "type": "%s",\n  "sdp": "%s"\n}' % (
            data_dict["type"],
            data_dict["sdp"].replace('"', '\\"').replace('\r', '\\r').replace('\n', '\\n')
        )

        # 转换为bytes并进行base64编码
        base64_data = base64.b64encode(json_str.encode('utf-8'))
        return base64_data.decode('utf-8')

    @staticmethod
    def base64_to_dict(encoded_str: str) -> dict:
        decoded_bytes = base64.b64decode(encoded_str)
        return json.loads(decoded_bytes.decode('utf-8'))

    @staticmethod
    def delete_signal_channel(request_dict, response):
        """
        删除信号通道
        @param request_dict: 请求参数
        @request_dict serial: 序列号
        @param response: 响应对象
        @return: response
        """
        serial = request_dict.get('serial', None)
        if not all([serial]):
            return response.json(444)
        try:
            kvs = KVS.objects.filter(channel_name=serial).first()
            if not kvs:
                return response.json(173)
            channel_arn = kvs.channel_arn
            kinesis_video_obj = AmazonKinesisVideoObject(
                aws_access_key_id=ACCESS_KEY_ID,
                secret_access_key=SECRET_ACCESS_KEY,
                region_name=KVS_REGION
            )
            kinesis_video_obj.delete_signaling_channel(channel_arn=channel_arn)
            kvs.delete()
            return response.json(0)
        except Exception as e:
            return response.json(500, 'error_line:{}, error_msg:{}'.format(e.__traceback__.tb_lineno, repr(e)))