from django.shortcuts import render, redirect
from django.contrib.auth.decorators import login_required
import datetime
from . import models as MainModel

def actualMonday():
    today = datetime.date.today()
    last_monday = today - datetime.timedelta(days=today.weekday())
    return last_monday

def FutureyDate(date, FutureWeeks):
    date = date + datetime.timedelta(weeks=FutureWeeks)
    return date

def PastDate(date, FutureWeeks):
    date = date - datetime.timedelta(weeks=FutureWeeks)
    return date

def separate_string(input_string):
    separated_string = ""
    index = 1
    for i in input_string:
        if index == 2:
            separated_string += i + "."
            index = 0
        else:
            separated_string += i
        index += 1

    return separated_string[:8]

@login_required
def index(request):
    error = False
    if request.GET.get("date"):
        actual = False
        actualdate = actualMonday()
        get_Date = separate_string(request.GET.get("date"))
        url_date = datetime.datetime.strptime(get_Date, "%d.%m.%y") 
        if url_date.date() <= actualdate or url_date.weekday() != 0:
            url_date = actualdate
            actual = True
            error = True
        elif url_date.date() == actualdate:
            actual = True
    else:
        url_date = actualMonday()
        actual = True

    strDate = url_date.strftime("%d.%m.%y")

    # Abfrage der Datenbanken um Informationen einzublenden

    steward_data = MainModel.steward.objects.filter(week__date_of_monday=strDate)[0]
    regie_data = MainModel.regie.objects.filter(week__date_of_monday=strDate)[0]

    persons = MainModel.contributors.objects.all()

    return render(request, 'main/index.html', {'actual' : actual, 
                                               'error' : error, 
                                               'date': strDate, 
                                               'next_date': FutureyDate(url_date, 1).strftime("%d%m%y"), 
                                               'past_date': PastDate(url_date, 1).strftime("%d%m%y"),
                                               'saal_ordner' : persons.filter(saalordner=True),
                                               'ordner' : persons.filter(ordner=True),
                                               'anlage' : persons.filter(anlage=True),
                                               'zoom' : persons.filter(zoom=True),
                                               'buehne' : persons.filter(buehne=True),
                                               'sm' : persons.filter(treffpunkt=True),
                                               'date_area' : {
                                                   'min'    : str(url_date),
                                                   'value'  : str(url_date),
                                                   'max'    : str(FutureyDate(url_date - datetime.timedelta(days=1), 1))},
                                                'steward_data' : steward_data,
                                                'regie_data' : regie_data,
                                               })