from django.shortcuts import render, redirect
from app01 import models

from app01.utils.pagination import Pagination
from app01.utils.form import UserModelForm

def user_list(request):
    """ 用户管理 """
    data_dict = {}
    search_data = request.GET.get('q', "")
    if search_data:
        data_dict["name__contains"] = search_data

    queryset = models.UserInfo.objects.filter(**data_dict)

    page_object = Pagination(request, queryset, page_size=6)
    context = {
        "queryset": page_object.page_queryset,
        "page_string": page_object.html(),
        'search_data': search_data,
    }
    return render(request, 'user_list.html', context)


def user_add(request):
    """ 添加用户（原始方式） """

    if request.method == "GET":
        context = {
            'gender_choices': models.UserInfo.gender_choices,
            "depart_list": models.Department.objects.all()
        }
        return render(request, 'user_add.html', context)

    # 获取用户提交的数据
    user = request.POST.get('user')
    pwd = request.POST.get('pwd')
    age = request.POST.get('age')
    account = request.POST.get('ac')
    ctime = request.POST.get('ctime')
    gender = request.POST.get('gd')
    depart_id = request.POST.get('dp')

    # 添加到数据库中
    models.UserInfo.objects.create(name=user, password=pwd, age=age,
                                   account=account, create_time=ctime,
                                   gender=gender, depart_id=depart_id)

    # 返回到用户列表页面
    return redirect("/user/list/")


def user_model_form_add(request):
    """ 添加用户（ModelForm版本）"""
    if request.method == "GET":
        form = UserModelForm()
        return render(request, 'user_model_form_add.html', {"form": form})

    # 用户POST提交数据，数据校验。
    form = UserModelForm(data=request.POST)
    if form.is_valid():
        # 如果数据合法，保存到数据库
        # {'name': '123', 'password': '123', 'age': 11, 'account': Decimal('0'), 'create_time': datetime.datetime(2011, 11, 11, 0, 0, tzinfo=<UTC>), 'gender': 1, 'depart': <Department: IT运维部门>}
        # print(form.cleaned_data)
        # models.UserInfo.objects.create(..)
        form.save()
        return redirect('/user/list/')

    # 校验失败（在页面上显示错误信息）
    return render(request, 'user_model_form_add.html', {"form": form})


def user_edit(request, nid):
    """ 编辑用户 """
    row_object = models.UserInfo.objects.filter(id=nid).first()

    if request.method == "GET":
        # 根据ID去数据库获取要编辑的那一行数据（对象）
        form = UserModelForm(instance=row_object)
        return render(request, 'user_edit.html', {'form': form})

    form = UserModelForm(data=request.POST, instance=row_object)
    if form.is_valid():
        # 默认保存的是用户输入的所有数据，如果想要再用户输入以外增加一点值
        # form.instance.字段名 = 值
        form.save()
        return redirect('/user/list/')
    return render(request, 'user_edit.html', {"form": form})


def user_delete(request, nid):
    models.UserInfo.objects.filter(id=nid).delete()
    return redirect('/user/list/')