"""
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.decorators import login_required
from django.http import HttpRequest
from django.shortcuts import get_object_or_404, redirect
from django.utils.translation import gettext_lazy as _

from ema.models import Ema
from intervention.forms.modals.share import ShareModalForm
from konova.decorators import conservation_office_group_required, shared_access_required


@login_required
def share_view(request: HttpRequest, id: str, token: str):
    """ Performs sharing of an ema

    If token given in url is not valid, the user will be redirected to the dashboard

    Args:
        request (HttpRequest): The incoming request
        id (str): EMA's id
        token (str): Access token for EMA

    Returns:

    """
    user = request.user
    obj = get_object_or_404(Ema, id=id)
    # Check tokens
    if obj.access_token == token:
        # Send different messages in case user has already been added to list of sharing users
        if obj.is_shared_with(user):
            messages.info(
                request,
                _("{} has already been shared with you").format(obj.identifier)
            )
        else:
            messages.success(
                request,
                _("{} has been shared with you").format(obj.identifier)
            )
            obj.share_with_user(user)
        return redirect("ema:detail", id=id)
    else:
        messages.error(
            request,
            _("Share link invalid"),
            extra_tags="danger",
        )
        return redirect("home")


@login_required
@conservation_office_group_required
@shared_access_required(Ema, "id")
def create_share_view(request: HttpRequest, id: str):
    """ Renders sharing form for an Ema

    Args:
        request (HttpRequest): The incoming request
        id (str): Ema's id

    Returns:

    """
    obj = get_object_or_404(Ema, id=id)
    form = ShareModalForm(request.POST or None, instance=obj, request=request)
    return form.process_request(
        request,
        msg_success=_("Share settings updated")
    )