"""
Author: Michel Peltriaux
Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
Contact: ksp-servicestelle@sgdnord.rlp.de
Created on: 19.08.22

"""
from django.contrib import messages
from django.contrib.auth.mixins import LoginRequiredMixin
from django.http import HttpRequest
from django.shortcuts import get_object_or_404, redirect

from intervention.forms.modals.revocation import NewRevocationModalForm, EditRevocationModalForm, \
    RemoveRevocationModalForm
from intervention.models import Intervention, RevocationDocument
from konova.utils.documents import get_document
from konova.utils.message_templates import DATA_UNSHARED, REVOCATION_EDITED, REVOCATION_REMOVED, REVOCATION_ADDED
from konova.views.base import BaseModalFormView, BaseView


class BaseRevocationView(LoginRequiredMixin, BaseModalFormView):
    _MODEL_CLS = Intervention
    _REDIRECT_URL = "intervention:detail"

    class Meta:
        abstract = True

    def _user_has_permission(self, user):
        return user.is_default_user()

    def _get_redirect_url(self, *args, **kwargs):
        url = super()._get_redirect_url(*args, **kwargs)
        return f"{url}#related_data"


class NewRevocationView(BaseRevocationView):
    _FORM_CLS = NewRevocationModalForm
    _MSG_SUCCESS = REVOCATION_ADDED


class EditRevocationView(BaseRevocationView):
    _FORM_CLS = EditRevocationModalForm
    _MSG_SUCCESS = REVOCATION_EDITED


class RemoveRevocationView(BaseRevocationView):
    _FORM_CLS = RemoveRevocationModalForm
    _MSG_SUCCESS = REVOCATION_REMOVED


class GetRevocationDocumentView(LoginRequiredMixin, BaseView):
    _MODEL_CLS = RevocationDocument
    _REDIRECT_URL = "intervention:detail"

    def get(self, request: HttpRequest, doc_id: str):
        doc = get_object_or_404(RevocationDocument, id=doc_id)
        # File download only possible if related instance is shared with user
        if not doc.instance.legal.intervention.users.filter(id=request.user.id):
            messages.info(
                request,
                DATA_UNSHARED
            )
            return redirect("intervention:detail", id=doc.instance.id)
        return get_document(doc)

    def _user_has_permission(self, user):
        return user.is_default_user()

    def _user_has_shared_access(self, user, **kwargs):
        obj = get_object_or_404(self._MODEL_CLS, id=kwargs.get("doc_id"))
        assert obj is not None
        return obj.instance.intervention.is_shared_with(user)

    def _get_redirect_url(self, *args, **kwargs):
        url = super()._get_redirect_url(*args, **kwargs)
        return f"{url}#related_data"