from django.shortcuts import render, redirect
from django.contrib.auth import authenticate, login, logout
from django.http import HttpResponse, JsonResponse
from django.views.decorators.csrf import ensure_csrf_cookie
from .forms import UserLoginForm, UserRegisterForm


# Create your views here.

def user_login(request):
    ret = {}
    if request.method == 'POST':
        user_login_form = UserLoginForm(data=request.POST)
        print(request.POST)
        if user_login_form.is_valid():
            # .cleaned_data 清洗出合法数据
            data = user_login_form.cleaned_data
            # 检验账号、密码是否正确匹配数据库中的某个用户
            # 如果均匹配则返回这个 user 对象
            user = authenticate(username=data['username'], password=data['password'])
            if user:
                # 将用户数据保存在 session 中，即实现了登录动作
                login(request, user)
                ret['code'] = 1001
                ret['message'] = '登陆成功'
                return JsonResponse(ret)
            else:
                ret['code'] = 1002
                ret['message'] = '账号或密码输入有误。请重新输入'
                return JsonResponse(ret)
        else:
            ret['code'] = 1003
            ret['message'] = '账号或密码输入不合法'
            return JsonResponse(ret)
    elif request.method == 'GET':
        user_login_form = UserLoginForm()
        context = {'form': user_login_form}
        return render(request, 'Profile/login.html', context)
    else:
        ret['code'] = 1004
        ret['message'] = '请使用GET或POST请求数据'
        return JsonResponse(ret)


def user_logout(request):
    logout(request)
    ret = {'code': 1001, 'message': '登出成功'}
    return JsonResponse(ret)


def user_is_logged(request):
    ret = {}
    if request.user.is_authenticated:
        ret['code'] = 1001
        ret['message'] = '已登陆'
        return JsonResponse(ret)
    else:
        ret['code'] = 1002
        ret['message'] = '未登陆'
        return JsonResponse(ret)


# 用户注册
def user_register(request):
    ret = {}
    if request.method == 'POST':
        user_register_form = UserRegisterForm(data=request.POST)
        print(request.POST)
        if user_register_form.is_valid():
            new_user = user_register_form.save(commit=False)
            # 设置密码
            new_user.set_password(user_register_form.cleaned_data['password'])
            new_user.save()
            # 保存好数据后立即登录并返回博客列表页面
            ret['code'] = 1001
            ret['message'] = '注册成功'
            return JsonResponse(ret)
        else:
            ret['code'] = 1002
            ret['message'] = '注册表单输入有误。请重新输入'
            return JsonResponse(ret)
    elif request.method == 'GET':
        user_register_form = UserRegisterForm()
        context = {'form': user_register_form}
        return render(request, 'Profile/register.html', context)
    else:
        ret['code'] = 1003
        ret['message'] = '请使用GET或POST请求数据'
        return JsonResponse(ret)