from django.contrib import admin

from polymorphic.admin import PolymorphicParentModelAdmin, PolymorphicChildModelAdmin, PolymorphicChildModelFilter

from .models import *

# Polymorfismus pro stromy
# TODO: Inlines podle https://django-polymorphic.readthedocs.io/en/stable/admin.html

@admin.register(TreeNode)
class TreeNodeAdmin(PolymorphicParentModelAdmin):
	base_model = TreeNode
	child_models = [
		RocnikNode,
		CisloNode,
		MezicisloNode,
		TemaVCisleNode,
		UlohaZadaniNode,
		PohadkaNode,
		UlohaVzorakNode,
		TextNode,
		CastNode,
		OrgTextNode,
	]

	actions = ['aktualizuj_nazvy']

	# XXX: nejspíš je to totální DB HOG, nechcete to použít moc často.
	def aktualizuj_nazvy(self, request, queryset):
		newqs = queryset.get_real_instances()
		for tn in newqs:
			tn.aktualizuj_nazev()
			tn.save()
		self.message_user(request, "Názvy aktualizovány.")
	aktualizuj_nazvy.short_description = "Aktualizuj vybraným TreeNodům názvy"

@admin.register(RocnikNode)
class RocnikNodeAdmin(PolymorphicChildModelAdmin):
	base_model = RocnikNode
	show_in_index = True

@admin.register(CisloNode)
class CisloNodeAdmin(PolymorphicChildModelAdmin):
	base_model = CisloNode
	show_in_index = True

@admin.register(MezicisloNode)
class MezicisloNodeAdmin(PolymorphicChildModelAdmin):
	base_model = MezicisloNode
	show_in_index = True

@admin.register(TemaVCisleNode)
class TemaVCisleNodeAdmin(PolymorphicChildModelAdmin):
	base_model = TemaVCisleNode
	show_in_index = True

@admin.register(UlohaZadaniNode)
class UlohaZadaniNodeAdmin(PolymorphicChildModelAdmin):
	base_model = UlohaZadaniNode
	show_in_index = True

@admin.register(PohadkaNode)
class PohadkaNodeAdmin(PolymorphicChildModelAdmin):
	base_model = PohadkaNode
	show_in_index = True

@admin.register(UlohaVzorakNode)
class UlohaVzorakNodeAdmin(PolymorphicChildModelAdmin):
	base_model = UlohaVzorakNode
	show_in_index = True

@admin.register(TextNode)
class TextNodeAdmin(PolymorphicChildModelAdmin):
	base_model = TextNode
	show_in_index = True

@admin.register(CastNode)
class TextNodeAdmin(PolymorphicChildModelAdmin):
	base_model = CastNode
	show_in_index = True
	fields = ('nadpis',)

@admin.register(OrgTextNode)
class TextNodeAdmin(PolymorphicChildModelAdmin):
	base_model = OrgTextNode
	show_in_index = True