from django.shortcuts import render
from django.http import HttpResponse
from django.views.decorators.csrf import csrf_exempt
from datetime import date, datetime

from .models import User


@csrf_exempt
def register(request):
    if date.today() >= date(2024, 5, 4):
        return HttpResponse('{"reason":"Too late!"}', status=400, content_type='application/json')
    if not request.POST.get('agreement'):
        return HttpResponse('{"reason":"Je potřeba souhlasit se zpracováním údajů!"}', status=400, content_type='application/json')
    if not request.POST['first_name']:
        return HttpResponse('{"reason":"Jméno je povinné!"}', status=400, content_type='application/json')
    if not request.POST['last_name']:
        return HttpResponse('{"reason":"Přijmení je povinné!"}', status=400, content_type='application/json')
    if not request.POST['email']:
        return HttpResponse('{"reason":"Email je povinný!"}', status=400, content_type='application/json')
    if User.objects.filter(email=request.POST['email']):
        return HttpResponse('{"reason":"Email je již registrován!"}', status=400, content_type='application/json')
    try:
        dat = datetime.strptime(request.POST['date_of_birth'], "%Y-%m-%d").date()
        if dat > date(2006, 5, 4):
            return HttpResponse('{"reason":"Je potřeba mít 18 let v den závodu!"}', status=400, content_type='application/json')
        elif dat < date(1924, 5, 4):
            return HttpResponse('{"reason":"Opravdu vám je 100 let?"}', status=400, content_type='application/json')
    except:
        return HttpResponse('{"reason":"Špatný formát datu narození!"}', status=400, content_type='application/json')

    user = User(
        first_name=request.POST['first_name'],
        last_name=request.POST['last_name'],
        email=request.POST['email'],
        date_of_birth=dat,
    )
    user.save()
    return HttpResponse('{"success":"Úspěšná registrace."}', content_type='application/json')