from django.contrib import admin
from django.contrib.auth.models import Group
from django_reverse_admin import ReverseModelAdmin
from django.contrib.messages import WARNING, ERROR, SUCCESS
import seminar.models as m
from datetime import datetime

@admin.action(description="Sjednoť telefony")
def sjednot_telefony(admin, request, queryset):
	for o in queryset:
		if o.telefon == '':
			continue
		try:
			telefon = int(o.telefon.replace(" ", "").replace("+", ""))
			# 6 míst
			if len(str(telefon)) == 9:
				o.telefon = "+420 " + str(telefon)[0:3] + " " + str(telefon)[3:6] + " " + str(telefon)[6:9]
				o.save()
			# 12 míst
			elif len(str(telefon)) == 12:
				o.telefon = "+" + str(telefon)[0:3] + " " + str(telefon)[3:6] + " " + str(telefon)[6:9] + " " + str(telefon)[9:12]
				o.save()
			else:
				raise ValueError
		except:
			admin.message_user(request, f"{o.jmeno} {o.prijmeni} (id: {o.id}) má divný telefon: {o.telefon}", level=ERROR)
	admin.message_user(request, "Telefony sjednoceny.", level=SUCCESS)

# Tohle chceme umět použít i z ResitelAdmin
@admin.action(description="Udělej z vybraných osob organizátory")
def udelej_orgem(admin, request, queryset):
	org_group = Group.objects.get(name='org')
	uspesne_vytvoreni_orgove = 0
	for o in queryset:
		if m.Organizator.objects.filter(osoba=o).exists():
			# Ref: https://docs.djangoproject.com/en/3.2/ref/contrib/admin/#django.contrib.admin.ModelAdmin.message_user
			admin.message_user(request, f"Osoba {o} už je org, přeskakuji.", level=WARNING)
			continue
		user = o.user
		if user is None:
			admin.message_user(request, f"Osoba {o} nemá uživatele! Přeskakuji.", level=ERROR)
			continue
		user.groups.add(org_group)
		user.is_staff = True
		user.save()
		org = m.Organizator.objects.create(osoba=o, organizuje_od=datetime.now())
		org.save()
		uspesne_vytvoreni_orgove += 1
	admin.message_user(request, f'Úspěšně vytvořeno {uspesne_vytvoreni_orgove} orgů.', level=SUCCESS)

@admin.register(m.Osoba)
class OsobaAdmin(admin.ModelAdmin):
	actions = ['synchronizuj_maily', udelej_orgem, sjednot_telefony]
	search_fields = ['jmeno', 'prijmeni', 'prezdivka']

	def synchronizuj_maily(self, request, queryset):
		for o in queryset:
			if o.user is not None:
				u = o.user
				u.email = o.email
				u.save()
		self.message_user(request, "E-maily synchronizovány.")
	synchronizuj_maily.short_description = "Synchronizuj vybraným osobám e-maily do uživatelů"

class OsobaInline(admin.TabularInline):
	model = m.Osoba

@admin.register(m.Organizator)
class OrganizatorAdmin(ReverseModelAdmin):
	search_fields = ['osoba__jmeno', 'osoba__prijmeni', 'osoba__prezdivka']
	inline_type = 'stacked'
	inline_reverse = ['osoba']

@admin.register(m.Resitel)
class ResitelAdmin(ReverseModelAdmin):
	search_fields = ['osoba__jmeno', 'osoba__prijmeni', 'osoba__prezdivka']
	list_filter = ['zasilat', 'zasilat_cislo_papirove', 'zasilat_cislo_emailem', 'rok_maturity']
	ordering = ('osoba__prijmeni', 'osoba__jmeno')
	inline_type = 'stacked'
	inline_reverse = ['osoba']

	actions = ['udelej_resitele_orgem']
	@admin.action(description="Udělej z řešitelů organizátory")
	def udelej_resitele_orgem(self, req, qs):
		osoby = m.Osoba.objects.filter(resitel__in=qs)
		udelej_orgem(self, req, osoby)

admin.site.register(m.Skola)
admin.site.register(m.Prijemce)