from django import forms
from django.contrib.auth import views as auth_views, password_validation
from django.contrib.auth.forms import UsernameField
from django.contrib.auth.mixins import LoginRequiredMixin
from django.contrib import messages
from django.core.exceptions import PermissionDenied
from django.http import HttpResponseForbidden, HttpResponseRedirect
from django.views.generic import TemplateView
from django.views.generic.detail import DetailView
from django.views.generic.edit import CreateView, UpdateView
from django.urls import reverse, reverse_lazy
from django.utils.translation import gettext_lazy as _
from trading.models import User, Commodity, MaxCommodityError


class IndexView(LoginRequiredMixin, TemplateView):
    template_name = "trading/index.html"


class CommodityDetailView(DetailView):
    template_name = "trading/c/detail.html"
    model = Commodity


class CommodityCreateView(LoginRequiredMixin, CreateView):
    template_name = "trading/c/create.html"
    model = Commodity
    fields = (
        "name",
        "in_circulation",
    )

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context["object"] = self.request.user
        return context

    def form_valid(self, form):
        user = self.request.user
        if not user.can_create_commodity():
            raise MaxCommodityError(user)
        form.instance.created_by = user
        return super(CreateView, self).form_valid(form)


class UserProfileView(DetailView):
    template_name = "trading/u/profile.html"
    model = User

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        if self.object.is_active:
            status = "Active"
        else:
            status = "Inactive"
        context["object_status"] = status
        return context


class UserUpdateSettingsForm(forms.ModelForm):
    class Meta:
        model = User
        fields = (
            "username",
            "email",
        )
        field_classes = {"username": UsernameField}

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


class UserSettingsView(LoginRequiredMixin, UpdateView):
    template_name = "trading/account/settings.html"
    model = User
    fields = ("username", "email")
    success_url = reverse_lazy("trading:settings")

    def get_object(self, queryset=None):
        return self.request.user