from django import urls
from django.contrib.auth.decorators import login_required
from django.http import JsonResponse
from django.shortcuts import render, redirect

from .forms import SignUpForm
from home.models import EventPage


def signup(request):
    if request.method == "POST":
        form = SignUpForm(request.POST)
        if form.is_valid():
            user = form.signup(request, form.save())
            return redirect("profile")
    else:
        form = SignUpForm()

    return render(request, "signup.html", {"form": form})


@login_required
def profile(request):
    return render(request, "profile.html", {"user": request.user})


def calendar(request):
    return render(request, "calendar.html")


def get_calendar_events(request):
    # get events from database (EventPage model)

    start = request.GET.get("start")
    end = request.GET.get("end")
    events = (
        EventPage.objects.live()
        .values("id", "title", "start", "end", "color", "tags")
        .filter(start__gte=start, end__lte=end)
    )

    # to json
    events_list = list(events)

    # add page url to each event
    for event in events_list:
        event_page = EventPage.objects.live().filter(title=event["title"]).first()
        if event_page:
            event["url"] = event_page.url
        if event_page.is_past:
            event["color"] = "#666666"

    return JsonResponse(events_list, safe=False)


def get_calendar_event(request, event_id):
    event = EventPage.objects.live().filter(id=event_id).first()
    if not event:
        return JsonResponse({"error": "Event not found"}, status=404)

    event_dict = {
        "id": event.id,
        "title": event.title,
        "start": event.start,
        "end": event.end,
        "location": event.location,
        "url": event.url,
        "color": event.color,
        "tags": list(event.tags.values_list("name", flat=True)),
    }

    return JsonResponse(event_dict)


def event_signup(request, event_id):
    if not request.user.is_authenticated:
        return redirect("login")

    event = EventPage.objects.live().filter(id=event_id).first()
    if not event:
        return redirect("calendar")

    event.signed_up_users.add(request.user)
    # redirect to calendar page with ?modal=event_id to show modal with event details
    return redirect(urls.reverse("calendar") + f"?modal={event_id}")


def event_signout(request, event_id):
    if not request.user.is_authenticated:
        return redirect("login")

    event = EventPage.objects.live().filter(id=event_id).first()
    if not event:
        return redirect("calendar")

    event.signed_up_users.remove(request.user)
    return redirect(urls.reverse("calendar") + f"?modal={event_id}")