import re
from django.views import View
from django import http
from rest_framework import status
from rest_framework.authentication import SessionAuthentication
from rest_framework.permissions import IsAuthenticated
from rest_framework.response import Response
from rest_framework.viewsets import ModelViewSet
from rest_framework_jwt.authentication import JSONWebTokenAuthentication

from .models import User
from rest_framework_jwt.settings import api_settings

from .serializers import UserModelSerializer

jwt_payload_handler = api_settings.JWT_PAYLOAD_HANDLER
jwt_encode_handler = api_settings.JWT_ENCODE_HANDLER
jwt_decode_handler = api_settings.JWT_DECODE_HANDLER
from rest_framework_jwt.views import ObtainJSONWebToken
class UserViewList(ModelViewSet):
    # 1,设置局部认证
    authentication_classes = (JSONWebTokenAuthentication, SessionAuthentication,)
    # authentication_classes = [SessionAuthentication, BasicAuthentication]
    # 2,设置局部权限
    permission_classes = (IsAuthenticated,)
    # 1,提供通用的序列化器
    serializer_class = UserModelSerializer

    # 2,提供通用的数据集
    queryset = User.objects.all()
class UserView(ModelViewSet):
    # 1,设置局部认证
    authentication_classes = (JSONWebTokenAuthentication, SessionAuthentication,)
    # authentication_classes = [SessionAuthentication, BasicAuthentication]
    # 2,设置局部权限
    permission_classes = (IsAuthenticated,)
    # 1,提供通用的序列化器
    serializer_class = UserModelSerializer

    # 2,提供通用的数据集
    queryset = User.objects.all()

# 用户登录
class LoginView(ObtainJSONWebToken):
    def post(self, request, *args, **kwargs):
        usr = request.data.get('username')
        pwd = request.data.get('password')
        if re.match(r'.+@.+', usr):
            user_query = User.objects.filter(email=usr)
        elif re.match(r'1[3-9][0-9]{9}', usr):
            user_query = User.objects.filter(mobile=usr)
        else:
            user_query = User.objects.filter(username=usr)
        user_obj = user_query.first()
        if user_obj and user_obj.check_password(pwd):
            payload = jwt_payload_handler(user_obj)
            token = jwt_encode_handler(payload)
            data = {"code":"200","token":token,"username":user_obj.username,"email":user_obj.email,"mobile":user_obj.mobile,"effective_date":user_obj.effective_date}
            return Response(data,status=status.HTTP_200_OK)
        return Response('账号异常或不存在',status=status.HTTP_202_ACCEPTED)