from django.db import models

from modelcluster.fields import ParentalKey

from wagtail.core.models import Page, Orderable
from wagtail.core.fields import RichTextField
from wagtail.admin.edit_handlers import FieldPanel, InlinePanel
from wagtail.images.edit_handlers import ImageChooserPanel
from wagtail.search import index


class StrankyPage(Page):
    body = RichTextField(blank=True)

    search_fields = Page.search_fields + [
        index.SearchField('body'),
    ]

    content_panels = Page.content_panels + [
        FieldPanel('body', classname="full"),
        InlinePanel('gallery_images', label="Obrázky"),
    ]


class StrankyPageGalleryImage(Orderable):
    page = ParentalKey(StrankyPage, on_delete=models.CASCADE, related_name='gallery_images')
    image = models.ForeignKey(
        'wagtailimages.Image', on_delete=models.CASCADE, related_name='+'
    )
    caption = models.CharField(blank=True, max_length=250)

    panels = [
        ImageChooserPanel('image'),
        FieldPanel('caption'),
    ]