from cgi import print_arguments
from django.shortcuts import render, redirect
from django.forms import ModelForm, PasswordInput, DateTimeInput, TextInput, Select
from django.contrib import messages
from django.utils import timezone
from web import models


# Create your views here.
class LoginForm(ModelForm):
    class Meta:
        model = models.UserTable
        fields = ['username', 'password']
        widgets = {
            'password': PasswordInput(),
        }

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        for field in self.fields.values():
            field.widget.attrs['class'] = 'form-control'


class SigninForm(ModelForm):
    class Meta:
        model = models.UserTable
        exclude = ['role', 'group']

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        for field in self.fields.values():
            field.widget.attrs['class'] = 'form-control'


def login(request):
    if request.method == 'GET':
        if request.session.get('is_login', None):
            return redirect('/')
        login_form = LoginForm()
        print('yes')
        return render(request, 'user_login.html', locals())

    login_form = LoginForm(data=request.POST)
    if login_form.is_valid():
        username = login_form.cleaned_data['username']
        password = login_form.cleaned_data['password']
        user = models.UserTable.objects.filter(username=username).first()
        if user and user.password == password:
            request.session['is_login'] = True
            request.session['user_id'] = user.id
            request.session['group_id'] = user.group_id
            request.session['name'] = user.name
            request.session['role'] = user.role
            return redirect('/')
        else:
            messages.warning(request, '用户名或密码错误！')
    return render(request, 'user_login.html', locals())


def logout(request):
    if request.session.get('is_login', None):
        request.session.flush()
        messages.success(request, '已退出登录！')
    return redirect('/')


def signin(request):
    if request.method == 'GET':
        signin_form = SigninForm()
        return render(request, 'user_reg.html', locals())

    if request.method == 'POST':
        signin_form = SigninForm(data=request.POST)
        if signin_form.is_valid():
            username = signin_form.cleaned_data['username']
            same_user = models.UserTable.objects.filter(username=username)
            if same_user:
                messages.warning(request, '用户名已存在！')
            else:
                signin_form.save()
                messages.success(request, '注册成功！')
                return redirect('/login/')

        return render(request, 'user_reg.html', locals())


class TodoForm(ModelForm):
    class Meta:
        model = models.ToDoTable
        exclude = ['user', 'group']
        widgets = {
            'name': TextInput(attrs={'placeholder': '待办事项名称'}),
            'detail': TextInput(attrs={'placeholder': '详细内容'}),
            'deadline': DateTimeInput(attrs={'type': 'datetime-local'}),
        }

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        for field in self.fields.values():
            field.widget.attrs['class'] = 'form-control'


def todo_add(request):
    if request.method == 'POST':
        user_id = request.session.get('user_id')
        group_id = request.session.get('group_id')
        todo = models.ToDoTable(user_id=user_id, group_id=group_id)
        todo_form = TodoForm(data=request.POST, instance=todo)
        if todo_form.is_valid():
            todo_form.save()
            messages.success(request, '添加成功！')
            return redirect('/todo_list/')


def todo_delete(request, id):
    models.ToDoTable.objects.filter(pk=id).first().delete()
    messages.success(request, '删除成功！')
    return redirect('/todo_list/')


def todo_edit(request, id):
    todo = models.ToDoTable.objects.filter(pk=id).first()
    if request.method == 'GET':
        todo_form = TodoForm(instance=todo)
        return render(request, 'todo_edit.html', locals())

    todo_form = TodoForm(data=request.POST, instance=todo)
    if todo_form.is_valid():
        todo_form.save()
        return redirect('/todo_list/')
    else:
        return render(request, 'todo_edit.html', locals())


def todo_done(request, id):
    todo = models.ToDoTable.objects.filter(pk=id).first()
    if request.method == 'GET':
        todo.state = 1
        todo.save()
        return redirect('/todo_list/')


def todo_list(request):
    if request.session.get('is_login'):
        todo_form = TodoForm()
        u_id = request.session.get('user_id')
        role = request.session.get('role')
        print(role)
        if role != 1:
            tasks = models.ToDoTable.objects.filter(user_id=u_id, state=2).all()

            dones = models.ToDoTable.objects.filter(user_id=u_id, state=1).all()
        else:
            g_id = request.session.get('group_id')
            tasks = models.ToDoTable.objects.filter(group_id=g_id, state=2).all()
            dones = models.ToDoTable.objects.filter(group_id=g_id, state=1).all()

        overdues = tasks.filter(deadline__lt=timezone.now()).all()
        normals = tasks.filter(deadline__gt=timezone.now()).all()
        return render(request, 'todo_list.html', locals())
    else:
        return redirect('/login/')


class EditForm1(ModelForm):
    class Meta:
        model = models.UserTable
        fields = '__all__'
        widgets = {
            'role': Select(attrs={'style':'pointer-events: none;'})
        }

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        for field in self.fields.values():
            field.widget.attrs['class'] = 'form-control'


class EditForm2(ModelForm):
    class Meta:
        model = models.UserTable
        fields = '__all__'
        widgets = {
            'role': Select(attrs={'style':'pointer-events: none;'}),
            'group': Select(attrs={'style':'pointer-events: none;'}),
        }

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        for field in self.fields.values():
            field.widget.attrs['class'] = 'form-control'


def user_edit(request, id):
    user = models.UserTable.objects.filter(pk=id).first()
    if request.method == 'GET':
        if user.group:
            user_form = EditForm2(instance=user)
        else:
            user_form = EditForm1(instance=user)
        return render(request, 'user_edit.html', locals())

    if user.group:
        user_form = EditForm2(data=request.POST, instance=user)
    else:
        user_form = EditForm1(data=request.POST, instance=user)
    if user_form.is_valid():
        user_form.save()
        if request.POST.get('group'):
            if user.role != 1:
                user.role = 2
                user.save()
        messages.success(request, '修改成功,重新登录！')
        logout(request)
        return redirect('/login/')
    else:
        return render(request, 'user_edit.html', locals())


def index(request):
    return render(request, 'index.html')


class GroupForm(ModelForm):
    class Meta:
        model = models.GroupTable
        fields = ['group_name', 'group_info']

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        for field in self.fields.values():
            field.widget.attrs['class'] = 'form-control'


def group_add(request):
    if request.method == 'GET':
        group_form = GroupForm()
        return render(request, 'group_add.html', locals())

    group_form = GroupForm(data=request.POST)
    if group_form.is_valid():
        user_id = request.session.get('user_id')
        group_name = request.POST.get('group_name')
        group_info = request.POST.get('group_info')
        new_group = models.GroupTable.objects.create(group_name=group_name,group_info=group_info, group_leader_id=user_id)
        user = models.UserTable.objects.filter(pk=user_id).first()
        user.group_id = new_group.id
        user.role = 1
        request.session['group_id'] = user.group_id
        request.session['role'] = user.role
        new_group.save()
        user.save()
        return redirect('/')
    else:
        return render(request, 'group_add.html', locals())


def group_delete(request, id):
    models.GroupTable.objects.filter(pk=id).first().delete()
    user_id = request.session.get('user_id')
    user = models.UserTable.objects.filter(pk=user_id).first()
    user.role = 3
    request.session['role'] = user.role
    return redirect('/')


def user_list(request):
    g_id = request.session.get('group_id')
    users = models.UserTable.objects.filter(group_id=g_id).all()
    group = models.GroupTable.objects.filter(pk=g_id).first()
    if request.method == 'GET':
        group_form = GroupForm(instance=group)
        return render(request, 'user_list.html', locals())

    group_form = GroupForm(data=request.POST, instance=group)
    if group_form.is_valid():
        group_form.save()
        messages.success(request, '修改成功,重新登录！')
        logout(request)
        return redirect('/')
    else:
        return render(request, 'user_list.html', locals())


def user_delete(request, id):
    user = models.UserTable.objects.filter(pk=id).first()
    user.group_id = None
    user.save()
    return redirect('/user_list/')