from django.shortcuts import render, redirect
from .form import UserLoginForm, UserRegisterForm
from django.contrib.auth import authenticate, login
from django.http import HttpResponse


def user_login(request):
    if request.method == 'POST':
        user_login_form = UserLoginForm(request.POST)
        if user_login_form.is_valid():
            # 清洗出合法的数据
            data = user_login_form.cleaned_data
            # 检测账号密码是否匹配数据库中的一个用户
            # 如果均匹配，则返回此User对象
            user = authenticate(username=data['username'], password=data['password'])
            if user:
                login(request, user)
                return redirect("chat:index")
            else:
                return HttpResponse("账号或密码输入不正确，请重新输入")
        else:
            return HttpResponse("输入不合法，请重新输入")
    elif request.method == 'GET':
        user_login_form = UserLoginForm()
        context = {'form': user_login_form}
        return render(request, 'login.html', context)
    else:
        return HttpResponse("请使用GET或者POST请求数据")