from django.contrib import auth
from api.models import Token, UserInfo
from rest_framework.response import Response
from rest_framework.viewsets import ViewSetMixin
from api.utils.serializer import UserInfoSerializer
from rest_framework.viewsets import generics
from api.utils.randomstrings import make_from_user_uuid


from rest_framework.views import APIView
from fir_ser import settings
import binascii
import os,datetime
from api.utils.app.TokenManager import DownloadToken,generateNumericTokenOfLength
from api.utils.auth import ExpiringTokenAuthentication

from api.utils.response import BaseResponse
from api.utils.captcha_verify import verify
from django.middleware import csrf

def get_token(request):
    token = csrf.get_token(request)
    return {'csrf_token': token}
class LoginView(APIView):
    def generate_key(self):
        return binascii.hexlify(os.urandom(20)).decode()

    def post(self, request):
        response = BaseResponse()
        receive = request.data

        if request.method == 'POST':
            print(receive)
            # is_valid = verify(receive)
            is_valid = True
            print("is_valid", is_valid)
            if is_valid:
                username = receive.get("username")
                password = receive.get("password")
                user = auth.authenticate(username=username, password=password)
                if user is not None:
                    # update the token
                    key = self.generate_key()
                    now = datetime.datetime.now()
                    Token.objects.update_or_create(user=user, defaults={"access_token": key, "created": now})
                    user_info = UserInfo.objects.get(pk=user.pk)
                    serializer = UserInfoSerializer(user_info)
                    data = serializer.data

                    response.msg = "验证成功!"
                    response.userinfo = data
                    response.token = key

                else:
                    try:
                        UserInfo.objects.get(username=username)
                        response.msg = "密码错误!"
                        response.code = 1002
                    except UserInfo.DoesNotExist:
                        response.msg = "用户不存在!"
                        response.code = 1003
            else:

                response.code = 1001
                response.msg = "请完成滑动验证!"

            return Response(response.dict)

    def get(self,request):
        response = BaseResponse()
        csrf=get_token(request)
        response.data=csrf
        return Response(response.dict)

class UserInfoView(APIView):
    authentication_classes = [ExpiringTokenAuthentication, ]

    def get(self,request):
        res = BaseResponse()
        serializer = UserInfoSerializer(request.user)
        res.data = serializer.data
        act =  request.query_params.get("act",None)
        if act and act == "sms":
            sms_token_obj=DownloadToken()
            sms_code=generateNumericTokenOfLength(6)
            sms_token=sms_token_obj.make_token([sms_code])
            res.data["sms_token"] = sms_token
            res.data["sms_code"] = sms_code

        return Response(res.dict)

    def put(self,request):
        res = BaseResponse()
        request.user.qq=request.data.get("qq",request.user.qq)
        request.user.job=request.data.get("job", request.user.job)
        request.user.first_name=request.data.get("first_name", request.user.first_name)

        oldpassword=request.data.get("oldpassword",None)
        surepassword=request.data.get("surepassword",None)
        if oldpassword and surepassword:
            user = auth.authenticate(username=request.user.username, password=oldpassword)
            if user is not None:
                user.set_password(surepassword)
                user.save()
                res.msg="密码修改成功"
                return Response(res.dict)
            else:
                res.code = 1004
                res.msg = "老密码校验失败"
        else:

            sms_token = request.data.get("sms_token",None)
            if sms_token:
                sms_token_obj=DownloadToken()
                if sms_token_obj.verify_token(sms_token,request.data.get("sms_code",None)):
                    request.user.mobile=request.data.get("mobile", request.user.mobile)
            request.user.save()
            serializer = UserInfoSerializer(request.user)
            res.data = serializer.data
            return Response(res.dict)

        return Response(res.dict)

    def post(self, request):
        res = BaseResponse()

        # 获取多个file
        files = request.FILES.getlist('file', None)
        for file_obj in files:
            # 将文件缓存到本地后上传
            try:
                app_type = file_obj.name.split(".")[-1]
                if app_type in ['png','jpeg','jpg']:
                    #上传图片
                    pass
                else:
                    raise
            except Exception as e:
                res.code = 1003
                res.msg = "错误的类型"
                return Response(res.dict)

            img_file_name = request.user.head_img
            if img_file_name == "" or img_file_name == '/files/imgs/head_img.jpeg':
                random_file_name = make_from_user_uuid(request.user)
                head_img = "/".join([settings.MEDIA_URL.strip("/"), "imgs", random_file_name + "." + app_type])
                try:
                    request.user.head_img = head_img
                    request.user.save()
                except Exception as e:
                    res.code = 1003
                    res.msg = "头像保存失败"
                    return Response(res.dict)
            else:
                random_file_name = os.path.basename(img_file_name)
                local_file = os.path.join(settings.MEDIA_ROOT,"imgs",random_file_name)
                # 读取传入的文件
                try:
                    destination = open(local_file, 'wb+')
                    for chunk in file_obj.chunks():
                        # 写入本地文件
                        destination.write(chunk)
                    destination.close()
                except Exception as e:
                    res.code = 1003
                    res.msg = "数据写入失败"
                    return Response(res.dict)

        return Response(res.dict)