from django import forms
from django.contrib.auth.mixins import LoginRequiredMixin
from django.shortcuts import redirect
from django.template.response import TemplateResponse
from django.views.generic import CreateView, UpdateView

from warehouse.models import Material, MaterialCategory, SteelGrade

from .models import Company, Deal


class _PopupRoleMixin(LoginRequiredMixin):
    def dispatch(self, request, *args, **kwargs):
        profile = getattr(request.user, "profile", None)
        role = profile.role if profile else ("admin" if request.user.is_superuser else "operator")
        if role not in ["admin", "technologist"]:
            return redirect("registry")
        return super().dispatch(request, *args, **kwargs)

    def get_target(self):
        return (self.request.GET.get("target") or self.request.POST.get("target") or "").strip()

    def form_valid(self, form):
        self.object = form.save()
        return TemplateResponse(
            self.request,
            "shiftflow/popup_done.html",
            {"target": self.get_target(), "value": self.object.pk, "label": self.get_popup_label()},
        )

    def get_context_data(self, **kwargs):
        ctx = super().get_context_data(**kwargs)
        ctx["target"] = self.get_target()
        return ctx

    def get_popup_label(self):
        return str(self.object)


class _BootstrapModelForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        for name, field in self.fields.items():
            widget = field.widget
            if isinstance(widget, (forms.Select, forms.SelectMultiple)):
                cls = "form-select border-secondary"
            elif isinstance(widget, forms.CheckboxInput):
                cls = "form-check-input"
            else:
                cls = "form-control border-secondary"
            widget.attrs["class"] = cls


class DealForm(_BootstrapModelForm):
    class Meta:
        model = Deal
        fields = ["number", "status", "company", "description"]


class CompanyForm(_BootstrapModelForm):
    class Meta:
        model = Company
        fields = ["name", "description"]


class MaterialForm(_BootstrapModelForm):
    class Meta:
        model = Material
        fields = ["category", "steel_grade", "name"]


class MaterialCategoryForm(_BootstrapModelForm):
    class Meta:
        model = MaterialCategory
        fields = ["name", "gost_standard"]


class SteelGradeForm(_BootstrapModelForm):
    class Meta:
        model = SteelGrade
        fields = ["name", "gost_standard"]


class DealPopupCreateView(_PopupRoleMixin, CreateView):
    template_name = "shiftflow/popup_form.html"
    model = Deal
    form_class = DealForm

    def get_popup_label(self):
        return self.object.number


class DealPopupUpdateView(_PopupRoleMixin, UpdateView):
    template_name = "shiftflow/popup_form.html"
    model = Deal
    form_class = DealForm

    def get_popup_label(self):
        return self.object.number


class CompanyPopupCreateView(_PopupRoleMixin, CreateView):
    template_name = "shiftflow/popup_form.html"
    model = Company
    form_class = CompanyForm

    def get_popup_label(self):
        return self.object.name


class CompanyPopupUpdateView(_PopupRoleMixin, UpdateView):
    template_name = "shiftflow/popup_form.html"
    model = Company
    form_class = CompanyForm

    def get_popup_label(self):
        return self.object.name


class MaterialPopupCreateView(_PopupRoleMixin, CreateView):
    template_name = "shiftflow/popup_form.html"
    model = Material
    form_class = MaterialForm

    def get_popup_label(self):
        return self.object.full_name


class MaterialPopupUpdateView(_PopupRoleMixin, UpdateView):
    template_name = "shiftflow/popup_form.html"
    model = Material
    form_class = MaterialForm

    def get_popup_label(self):
        return self.object.full_name


class MaterialCategoryPopupCreateView(_PopupRoleMixin, CreateView):
    template_name = "shiftflow/popup_form.html"
    model = MaterialCategory
    form_class = MaterialCategoryForm

    def get_popup_label(self):
        return self.object.name


class MaterialCategoryPopupUpdateView(_PopupRoleMixin, UpdateView):
    template_name = "shiftflow/popup_form.html"
    model = MaterialCategory
    form_class = MaterialCategoryForm

    def get_popup_label(self):
        return self.object.name


class SteelGradePopupCreateView(_PopupRoleMixin, CreateView):
    template_name = "shiftflow/popup_form.html"
    model = SteelGrade
    form_class = SteelGradeForm

    def get_popup_label(self):
        return self.object.name


class SteelGradePopupUpdateView(_PopupRoleMixin, UpdateView):
    template_name = "shiftflow/popup_form.html"
    model = SteelGrade
    form_class = SteelGradeForm

    def get_popup_label(self):
        return self.object.name