from django.shortcuts import render, redirect, HttpResponse
from django.http import JsonResponse, HttpResponseRedirect
from django.views.generic import View
# from . import models
from .models import User, Menu
from django.core.serializers import serialize
from rest_framework.views import APIView
from api.serializers import *
import json

# Create your views here.


def format_useinfo(user):
    format_user = json.loads(
        serialize('json', user, ensure_ascii=False)
    )
    for item in format_user:
        res = item.get('fields')
        res['userId'] = item.get('pk')
        res['roles'] = [
            {
                'roleName': res.get('roleName'), 'value': res.get('value')
            }
        ]
        res.pop('roleName')
        res.pop('value')
        res.pop('password')
    return res


def format_uselist(list):
    json_user = json.loads(
        serialize('json', list, ensure_ascii=False)
    )
    res = []
    for item in json_user:
        item['fields'].pop('value')
        item['fields'].pop('token')
        user = item.get('fields')
        user['id'] = item.get('pk')
        # res['roles'] = [
        #     {
        #         'roleName': res.get('roleName'), 'value': res.get('value')
        #     }
        # ]
        # res.pop('roleName')
        # res.pop('value')
        # res.pop('password')
        res.append(user)
    return res


def format_login_result(user):
    format_user = json.loads(
        serialize('json', user, ensure_ascii=False)
    )
    for item in format_user:
        res = {}
        res['userId'] = item.get('pk')
        res['menus'] = item.get('menus')
        res['token'] = item.get('fields').get('token')
        res['roles'] = [
            {
                'roleName': item.get('fields').get('roleName'), 'value': item.get('fields').get('value')
            }
        ]
    return res


def format_menus(querySetObj, mode):
    # querySet 转json对象
    data = json.loads(serialize('json', querySetObj, ensure_ascii=False))
    # 定义一级菜单列表(无父id)
    menus = []
    # 子菜单列表
    childrens = []
    for item in data:
        item['fields']['id'] = item.get('pk')
        # mode True -- 否将某些字段合并处理成前台路由需要的数据结构;
        if mode:
            item['fields']['meta'] = {
                "title": item['fields'].pop('title'),
                "affix":  item['fields'].pop('affix'),
                "icon": item['fields'].pop('icon'),
            }
            if (item.get('fields').get('parent') == None):
                menus.append(item.get('fields'))
            else:
                childrens.append(item.get('fields'))

            for children in childrens:
                # 将列表转化成树形菜单
                getTree(children, menus, childrens)

        else:  # False -- 不必转成树结构, menuName 语言包需要到前台转中文
            item['fields']["menuName"] = item['fields'].pop("title")
            item['fields'].pop('affix')
            menus.append(item.get('fields'))

    return menus


"""
def getTree(children, menus, childrens)
根据传递过来的父菜单id，递归设置各层次父菜单的子菜单列表
:children: 单个子菜单
:param menus: 父菜单列表 一级菜单
:childrens： 子菜单列表，第二次调用
"""


def getTree(children, menus, childrens):
    # 遍历父菜单
    for m in menus:
        # 当前菜单的id 和 子菜单的父id 是否匹配
        if m.get('id') == children.get('parent'):
            if not m.get('children'):
                m['children'] = []
            if not children in m['children']:  # 判单子菜单是否已存在
                m['children'].append(children)

            if m.get('children'):
                for children in childrens:
                    # 判断子菜单是否还有匹配的子菜单
                    getTree(children, m.get('children'), childrens)


# 请求---------------------------------------------------------------------
class login(View):
    def post(self, request):

        data = request.POST

        user = User.objects.all().filter(username=data.get(
            'username'), password=data.get('password'))
        print(user)
        if user:
            res = format_login_result(user)
            return JsonResponse({'code': 1, 'msg': 'success', 'result': res}, json_dumps_params={"ensure_ascii": False})
        else:
            return JsonResponse({'code': 0, 'error': '用户名或密码不正确'}, json_dumps_params={"ensure_ascii": False})


class getUserInfoById(View):
    def post(self, request):
        userid = request.POST.get('userId')
        print('====================udsaersadf======')
        print(userid)
        print('====================udsaersadf======')

        user = User.objects.all().filter(id=userid)
        if user:
            # res = {'codeList': ['1000', '3000', '5000']}
            res = format_useinfo(user)
            return JsonResponse({'code': 1, 'result': res, }, json_dumps_params={"ensure_ascii": False})
        else:
            return JsonResponse({'code': 0, 'type': 'error', 'message': 'no role,create role'}, json_dumps_params={"ensure_ascii": False})


class getUserList(View):
    def get(self, request):
        users = User.objects.all()
        if users:
            res = format_uselist(users)
            return JsonResponse({'code': 1, 'result': res, }, json_dumps_params={"ensure_ascii": False})
        else:
            return JsonResponse({'code': 0, 'type': 'error', 'message': 'no role,create role'}, json_dumps_params={"ensure_ascii": False})


class addUser(APIView):
    serialize_class = UserSerializer

    def post(self, request):
        # user = json.loads(request.body)
        user = request.POST
        userSer = UserSerializer(data=user)
        if userSer.is_valid():
            menuIdList = user.pop('menus')
            menus = Menu.objects.all().filter(id__in=menuIdList)
            user['token'] = user.get('username') + 'token'
            userObj = User.objects.create(**user)
            userObj.menus.set(menus)
            return JsonResponse({'code': 1, 'result': {'data': '角色创建成功'}}, json_dumps_params={"ensure_ascii": False})
        else:
            print(userSer.errors)
            return JsonResponse({'code': 0, 'type': 'error', 'message': '字段校验未通过', "result": userSer.errors}, json_dumps_params={"ensure_ascii": False})

        # if User.objects.all().filter(username=data.get('username')):
        #     return JsonResponse({'code': 0, 'type': 'error', 'message': '该角色名已被占用'}, json_dumps_params={"ensure_ascii": False})
        # else:
        #     data['token'] = data.get('username') + 'token'
        #     userObj = User.objects.create(**data)
        #     userObj.menus.set(menus)

        #     return JsonResponse({'code': 1, 'result': {'data': '角色创建成功'}}, json_dumps_params={"ensure_ascii": False})


class editUser(APIView):
    serialize_class = UserSerializer

    def post(self, request):
        # data = json.loads(request.body)
        data = request.POST
        userSer = UserSerializer(data=data)
        user = User.objects.all().filter(id=data.get('id')).first()

        if not userSer.is_valid() and user.username != data.get('username'):
            return JsonResponse({'code': 0, 'type': 'error', 'message': '字段校验未通过', 'result': userSer.errors}, json_dumps_params={"ensure_ascii": False})
        else:
            menuIdList = data.pop('menus')
            menus = Menu.objects.all().filter(id__in=menuIdList)
            user.username = data.get('username')
            user.password = data.get('password')
            user.nickname = data.get('nickname')
            user.status = data.get('status')
            user.detail = data.get('detail')
            user.menus.set(menus)
            user.save()
            return JsonResponse({'code': 1, 'type': 'error', 'message': '修改成功', 'result': {'data': '修改成功'}}, json_dumps_params={"ensure_ascii": False})


class deleteUser(View):
    def post(self, request):
        data = request.POST
        user = User.objects.all().filter(id=data.get('id'))
        try:
            if user:
                user.delete()
                return JsonResponse({'code': 1, 'result': {'data': '删除角色成功'}}, json_dumps_params={"ensure_ascii": False})
            else:
                return JsonResponse({'code': 0, 'type': 'error', 'message': '查无此人'}, json_dumps_params={"ensure_ascii": False})
        except Exception as e:
            print(e)
            return JsonResponse({'code': 0, 'type': 'error', 'message': e}, json_dumps_params={"ensure_ascii": False})


class getMenuListById(View):
    def post(self, request):
        # 获取参数id
        userId = request.POST.get('id')
        print(userId)
        # 当前用户
        querSetUser = User.objects.all().filter(id=userId)
        user = format_useinfo(querSetUser)
        # 获取当前user 的menus(id集合)
        menuIdList = user.get('menus')
        # 匹配查询 id__in=[1,2,3]
        querySetMenu = Menu.objects.all().filter(id__in=menuIdList)
        menus = format_menus(querySetMenu, True)
        return JsonResponse({'code': 1, 'result': menus})


class getAllMenuList(View):
    def get(self, request):
        querySetObj = Menu.objects.all()
        menus = format_menus(querySetObj, False)
        return JsonResponse({'code': 1, 'result': {'format': True, 'menus': menus}}, json_dumps_params={"ensure_ascii": False})


class addMenu(APIView):
    serialize_class = MenuSerializer

    def post(self, request):
        # data = json.loads(request.body)
        data = request.POST
        data.title = data.pop('menuName')
        menuSer = MenuSerializer(data=data)
        if menuSer.is_valid():
            if data.get('parent'):
                parentId = data.pop('parent')
                parent = Menu.objects.all().filter(id=parentId).first()
                data['parent'] = parent
            menuObj = Menu.objects.create(**data)
            return JsonResponse({'code': 1, 'result': {'data': '菜单添加成功'}}, json_dumps_params={"ensure_ascii": False})
        else:
            return JsonResponse({'code': 0, 'type': 'error', 'message': '字段校验未通过', "result": menuSer.errors}, json_dumps_params={"ensure_ascii": False})


class editMenu(APIView):
    serialize_class = MenuSerializer

    def post(self, request):
        data = request.POST
        data.title = data.pop('menuName')
        menuSer = MenuSerializer(data=data)
        if menuSer.is_valid():
            menu = Menu.objects.all().filter(id=data.get('id')).first()
            menu.icon = data.get('icon')
            menu.title = data.get('title')
            menu.path = data.get('path')
            menu.reditect = data.get('reditect')
            menu.component = data.get('component')
            menu.status = data.get('status')
            menu.detail = data.get('detail')
            menu.parent = Menu.objects.all().filter(id=data.get('parent')).first()
            menu.save()
            return JsonResponse({'code': 1, 'result': {'data': '菜单修改成功'}}, json_dumps_params={"ensure_ascii": False})
        else:
            return JsonResponse({'code': 0, 'type': 'error', 'message': '字段校验未通过', "result": menuSer.errors}, json_dumps_params={"ensure_ascii": False})


class deleteMenu(View):
    def post(self, request):
        data = request.POST
        menu = Menu.objects.all().filter(id=data.get('id'))
        try:
            if menu:
                menu.delete()
                return JsonResponse({'code': 1, 'result': {'data': '删除菜单成功'}}, json_dumps_params={"ensure_ascii": False})
            else:
                return JsonResponse({'code': 0, 'type': 'error', 'message': '没有找到匹配菜单'}, json_dumps_params={"ensure_ascii": False})
        except Exception as e:
            print(e)
            return JsonResponse({'code': 0, 'type': 'error', 'message': 'server error'}, json_dumps_params={"ensure_ascii": False})


class FileUpload(View):
    def post(self, request):
        # data = request.body
        print('=====================sendPage==================')
        img = request.FILES.get("file", None)
        print(img)
        print(img.name)   # 获取文件名称
        print(img.chunks)  # 获取文件内容
        # 创建文件
        print('=====================sendPage==================')

        # 报存到数据库
        # FileUpload.objects.create(name=img.name)
        return HttpResponse("ok")