from django.shortcuts import render
from rest_framework.exceptions import ValidationError
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import serializers, status
from django_redis import get_redis_connection
import random
# Create your views here.
import uuid
import re

def phone_validator(value):
    if not re.match(r'^(1[3|4|5|6|7|8|9])\d{9}$', value):
        raise ValidationError('手机格式错误')

class LoginSerializer(serializers.Serializer):
    phone = serializers.CharField(label='手机号', validators=[phone_validator, ])
    code = serializers.CharField(label='短信验证码')


    def validate_code(self, value):
        if len(value) !=4:
            raise ValidationError('短信格式错误')
        if not value.isdecimal():
            raise ValidationError("短信格式错误")
        phone=self.initial_data.get('phone')
        conn=get_redis_connection()
        code=conn.get(phone)
        if not code:
            raise ValidationError("验证码过期")

        if value!=code.decode('utf-8'):
            raise ValidationError("验证码错误")
        return value

class LoginView(APIView):
    def post(self, request, *args, **kwargs):
        ser=LoginSerializer(data=request.data)
        if not ser.is_valid():
            return Response({'status': False,'message':'验证码错误'})
        from api import models
        phone=ser.validated_data.get('phone')
        user_object,flag=models.UserInfo.objects.get_or_create(phone=phone)
        user_object.token=str(uuid.uuid4())
        user_object.save()
        from api import models

        return Response({'status': True,"data":{'token':user_object.token,'phone':phone,'id':models.UserInfo.objects.get(phone=phone).id}})





class MessageSerializer(serializers.Serializer):
    phone = serializers.CharField(label='手机号', validators=[phone_validator, ])


class MessageView(APIView):
    def get(self, request, *args, **kwargs):
        ser=MessageSerializer(data=request.query_params)
        if not ser.is_valid():
            return Response({'status':False,'message':'手机号错误'})
        phone = ser.validated_data.get('phone')
        print(phone)

        random_code = random.randint(1000, 9999)

        print(random_code)
        import redis

        conn=get_redis_connection()
        conn.set(phone,random_code,ex=60)
        print(conn.keys())

        return Response({'status': True,'message':'发送成功'})