from datetime import date

from django.shortcuts import render, get_object_or_404

from .models import Mineral


def daily_stone(request):
    today = date.today()
    day = today.timetuple().tm_yday
    total = Mineral.objects.count()

    if total == 0:
        return render(request, 'dailystone/stone.html', {'mineral': None})

    # Wrap around if we have fewer minerals than days in the year
    index = (day - 1) % total + 1
    mineral = Mineral.objects.filter(day_of_year=index).first()

    # Fallback: pick by modulo of pk list
    if not mineral:
        minerals = list(Mineral.objects.all())
        mineral = minerals[(day - 1) % len(minerals)]

    return render(request, 'dailystone/stone.html', {
        'mineral': mineral,
        'today': today,
    })