"""
Author: Michel Peltriaux
Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
Contact: michel.peltriaux@sgdnord.rlp.de
Created on: 16.11.20

"""
from django.contrib.auth import logout
from django.contrib.auth.decorators import login_required
from django.http import HttpRequest, FileResponse
from django.shortcuts import redirect, render, get_object_or_404
from django.utils import timezone
from django.utils.translation import gettext_lazy as _

from compensation.models import Compensation, EcoAccount
from intervention.models import Intervention
from konova.contexts import BaseContext
from konova.decorators import any_group_check
from konova.forms import RemoveModalForm
from konova.models import Deadline
from news.models import ServerMessage
from konova.settings import SSO_SERVER_BASE


def logout_view(request: HttpRequest):
    """
    Logout route for ending the session manually.

    Args:
        request (HttpRequest): The used request object

    Returns:
        A redirect
    """
    logout(request)
    return redirect(SSO_SERVER_BASE)


@login_required
@any_group_check
def home_view(request: HttpRequest):
    """
    Renders the landing page

    Args:
        request (HttpRequest): The used request object

    Returns:
        A redirect
    """
    template = "konova/home.html"
    now = timezone.now()
    user = request.user

    # Fetch the four newest active and published ServerMessages
    msgs = ServerMessage.objects.filter(
        is_active=True,
        publish_on__lte=now,
        unpublish_on__gte=now,
    ).order_by(
        "-publish_on"
    )[:4]

    # First fetch all valid objects (undeleted, only newest versions)
    interventions = Intervention.objects.filter(
        deleted=None,
    )
    # Then fetch only user related ones
    user_interventions = interventions.filter(
        users__in=[user]
    )

    # Repeat for other objects
    comps = Compensation.objects.filter(
        deleted=None,
    )
    user_comps = comps.filter(
        intervention__users__in=[user]
    )
    eco_accs = EcoAccount.objects.filter(
        deleted=None,
    )
    user_ecco_accs = eco_accs.filter(
        users__in=[user]
    )

    additional_context = {
        "msgs": msgs,
        "total_intervention_count": interventions.count(),
        "user_intervention_count": user_interventions.count(),
        "total_compensation_count": comps.count(),
        "user_compensation_count": user_comps.count(),
        "total_eco_count": eco_accs.count(),
        "user_eco_count": user_ecco_accs.count(),
    }
    context = BaseContext(request, additional_context).context
    return render(request, template, context)


@login_required
def remove_deadline_view(request: HttpRequest, id:str):
    """ Renders a modal form for removing a deadline object

    Args:
        request (HttpRequest): The incoming request
        id (str): The deadline id

    Returns:

    """
    deadline = get_object_or_404(Deadline, id=id)
    form = RemoveModalForm(request.POST or None, instance=deadline, request=request)
    return form.process_request(
        request,
        msg_success=_("Deadline removed")
    )


def get_404_view(request: HttpRequest, exception=None):
    """ Returns a 404 handling view

    Args:
        request ():
        exception ():

    Returns:

    """
    context = BaseContext.context
    return render(request, "404.html", context, status=404)


def get_500_view(request: HttpRequest):
    """ Returns a 404 handling view

    Args:
        request ():

    Returns:

    """
    context = BaseContext.context
    return render(request, "500.html", context, status=500)