from __future__ import unicode_literals

from django.db import models

from modelcluster.fields import ParentalKey
from modelcluster.models import ClusterableModel

from wagtail.wagtailadmin.edit_handlers import (
    FieldPanel, FieldRowPanel, InlinePanel, MultiFieldPanel, PageChooserPanel, StreamFieldPanel,
)
from wagtail.wagtailcore.fields import RichTextField, StreamField
from wagtail.wagtailcore.models import Collection, Page
from wagtail.wagtailforms.models import AbstractEmailForm, AbstractFormField
from wagtail.wagtailimages.edit_handlers import ImageChooserPanel
from wagtail.wagtailsearch import index
from wagtail.wagtailsnippets.models import register_snippet

from .blocks import BaseStreamBlock


@register_snippet
class People(ClusterableModel):
    """
    `People` snippets are secondary content objects that do not require their
    own full webpage to render.
    """
    first_name = models.CharField("First name", max_length=254)
    last_name = models.CharField("Last name", max_length=254)
    job_title = models.CharField("Job title", max_length=254)

    image = models.ForeignKey(
        'wagtailimages.Image',
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name='+'
    )

    panels = [
        FieldPanel('first_name', classname="col6"),
        FieldPanel('last_name', classname="col6"),
        FieldPanel('job_title'),
        ImageChooserPanel('image')
    ]

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

    @property
    def thumb_image(self):
        # fail silently if there is no profile pic or the rendition file can't
        # be found. Note @richbrennan worked out how to do this...
        try:
            return self.image.get_rendition('fill-50x50').img_tag()
        except:
            return ''

    def __str__(self):
        return '{} {}'.format(self.first_name, self.last_name)

    class Meta:
        verbose_name = 'Person'
        verbose_name_plural = 'People'


@register_snippet
class FooterText(models.Model):
    """
    This provides editable text for the site footer
    """
    body = RichTextField()

    panels = [
        FieldPanel('body'),
    ]

    def __str__(self):
        return "Footer text"

    class Meta:
        verbose_name_plural = 'Footer Text'


class StandardPage(Page):
    """
    A fairly generic site page, to be used for About, etc.
    """

    introduction = models.TextField(
        help_text='Text to describe the page',
        blank=True)
    image = models.ForeignKey(
        'wagtailimages.Image',
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name='+',
        help_text='Landscape mode only; horizontal width between 1000px and 3000px.'
    )
    body = StreamField(
        BaseStreamBlock(), verbose_name="Page body", blank=True
    )
    content_panels = Page.content_panels + [
        FieldPanel('introduction', classname="full"),
        StreamFieldPanel('body'),
        ImageChooserPanel('image'),
    ]


class HomePage(Page):
    """
    The Home Page
    """
    image = models.ForeignKey(
        'wagtailimages.Image',
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name='+',
        help_text='Homepage image'
    )
    hero_text = models.CharField(
        max_length=255,
        help_text='Write an introduction for the bakery'
        )
    hero_cta = models.CharField(
        verbose_name='Hero CTA',
        max_length=255,
        help_text='Text to display on Call to Action'
        )
    hero_cta_link = models.ForeignKey(
        'wagtailcore.Page',
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name='+',
        verbose_name='Hero CTA link',
        help_text='Choose a page to link to for the Call to Action'
    )

    body = StreamField(
        BaseStreamBlock(), verbose_name="Home content block", blank=True
    )

    promo_image = models.ForeignKey(
        'wagtailimages.Image',
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name='+',
        help_text='Promo image'
    )
    promo_title = models.CharField(
        null=True,
        blank=True,
        max_length=255,
        help_text='Title to display above the promo copy'
    )
    promo_text = RichTextField(
        null=True,
        blank=True,
        help_text='Write some promotional copy'
    )

    featured_section_1_title = models.CharField(
        null=True,
        blank=True,
        max_length=255,
        help_text='Title to display above the promo copy'
    )
    featured_section_1 = models.ForeignKey(
        'wagtailcore.Page',
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name='+',
        help_text='First featured section for the homepage. Will display up to three child items.',
        verbose_name='Featured section 1'
    )

    featured_section_2_title = models.CharField(
        null=True,
        blank=True,
        max_length=255,
        help_text='Title to display above the promo copy'
    )
    featured_section_2 = models.ForeignKey(
        'wagtailcore.Page',
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name='+',
        help_text='Second featured section for the homepage. Will display up to three child items.',
        verbose_name='Featured section 2'
    )

    featured_section_3_title = models.CharField(
        null=True,
        blank=True,
        max_length=255,
        help_text='Title to display above the promo copy'
    )
    featured_section_3 = models.ForeignKey(
        'wagtailcore.Page',
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name='+',
        help_text='Third featured section for the homepage. Will display up to six child items.',
        verbose_name='Featured section 3'
    )

    content_panels = Page.content_panels + [
        MultiFieldPanel([
            ImageChooserPanel('image'),
            FieldPanel('hero_text', classname="full"),
            MultiFieldPanel([
                FieldPanel('hero_cta'),
                PageChooserPanel('hero_cta_link'),
                ])
            ], heading="Hero section"),
        MultiFieldPanel([
            ImageChooserPanel('promo_image'),
            FieldPanel('promo_title'),
            FieldPanel('promo_text'),
        ], heading="Promo section"),
        StreamFieldPanel('body'),
        MultiFieldPanel([
            MultiFieldPanel([
                FieldPanel('featured_section_1_title'),
                PageChooserPanel('featured_section_1'),
                ]),
            MultiFieldPanel([
                FieldPanel('featured_section_2_title'),
                PageChooserPanel('featured_section_2'),
                ]),
            MultiFieldPanel([
                FieldPanel('featured_section_3_title'),
                PageChooserPanel('featured_section_3'),
                ])
        ], heading="Featured homepage sections", classname="collapsible")
    ]

    def __str__(self):
        return self.title


class GalleryPage(Page):
    """
    This is a page to list locations from the selected Collection
    """

    introduction = models.TextField(
        help_text='Text to describe the page',
        blank=True)
    image = models.ForeignKey(
        'wagtailimages.Image',
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name='+',
        help_text='Landscape mode only; horizontal width between 1000px and 3000px.'
    )
    body = StreamField(
        BaseStreamBlock(), verbose_name="Page body", blank=True
    )
    collection = models.ForeignKey(
        Collection,
        limit_choices_to=~models.Q(name__in=['Root']),
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        help_text='Select the image collection for this gallery.'
    )

    content_panels = Page.content_panels + [
        FieldPanel('introduction', classname="full"),
        StreamFieldPanel('body'),
        ImageChooserPanel('image'),
        FieldPanel('collection'),
    ]

    # Defining what content type can sit under the parent. Since it's a blank
    # array no subpage can be added
    subpage_types = []


class FormField(AbstractFormField):
    page = ParentalKey('FormPage', related_name='form_fields')


class FormPage(AbstractEmailForm):
    image = models.ForeignKey(
        'wagtailimages.Image',
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name='+'
    )
    body = StreamField(BaseStreamBlock())
    thank_you_text = RichTextField(blank=True)
    content_panels = AbstractEmailForm.content_panels + [
        ImageChooserPanel('image'),
        StreamFieldPanel('body'),
        InlinePanel('form_fields', label="Form fields"),
        FieldPanel('thank_you_text', classname="full"),
        MultiFieldPanel([
            FieldRowPanel([
                FieldPanel('from_address', classname="col6"),
                FieldPanel('to_address', classname="col6"),
            ]),
            FieldPanel('subject'),
        ], "Email"),
    ]