"""
Layout blocks are essentially a wrapper around content.
e.g. rows, columns, hero units, etc.
"""

from django.utils.translation import gettext_lazy as _
from wagtail import blocks
from wagtail.images.blocks import ImageChooserBlock

from wagtailcrx.settings import crx_settings

from .base_blocks import BaseLayoutBlock, CoderedAdvColumnSettings


# Level 1 layout blocks


class ColumnBlock(BaseLayoutBlock):
    """
    Renders content in a column.
    """
    column_size = blocks.ChoiceBlock(
        choices=crx_settings.CRX_FRONTEND_COL_SIZE_CHOICES,
        default=crx_settings.CRX_FRONTEND_COL_SIZE_DEFAULT,
        required=False,
        label=_('Column size'),
    )

    advsettings_class = CoderedAdvColumnSettings

    class Meta:
        template = 'wagtailcrx/blocks/column_block.html'
        icon = 'placeholder'
        label = 'Column'


class GridBlock(BaseLayoutBlock):
    """
    Renders a row of columns.
    """
    fluid = blocks.BooleanBlock(
        required=False,
        label=_('Full width'),
    )

    class Meta:
        template = 'wagtailcrx/blocks/grid_block.html'
        icon = 'cr-columns'
        label = _('Responsive Grid Row')

    def __init__(self, local_blocks=None, **kwargs):
        super().__init__(
            local_blocks=[
                ('content', ColumnBlock(local_blocks))
            ]
        )


class CardGridBlock(BaseLayoutBlock):
    """
    Renders a row of cards.
    """
    fluid = blocks.BooleanBlock(
        required=False,
        label=_('Full width'),
    )

    class Meta:
        template = 'wagtailcrx/blocks/cardgrid_deck.html'
        icon = 'cr-th-large'
        label = _('Card Grid')


class HeroBlock(BaseLayoutBlock):
    """
    Wrapper with color and image background options.
    """

    fluid = blocks.BooleanBlock(
        required=False,
        default=True,
        label=_('Full width'),
    )
    is_parallax = blocks.BooleanBlock(
        required=False,
        label=_('Parallax Effect'),
        help_text=_(
            'Background images scroll slower than foreground images, creating an illusion of depth.'),  # noqa
    )
    background_image = ImageChooserBlock(required=False)
    tile_image = blocks.BooleanBlock(
        required=False,
        default=False,
        label=_('Tile background image'),
    )
    background_color = blocks.CharBlock(
        required=False,
        max_length=255,
        label=_('Background color'),
        help_text=_('Hexadecimal, rgba, or CSS color notation (e.g. #ff0011)'),
    )
    foreground_color = blocks.CharBlock(
        required=False,
        max_length=255,
        label=_('Text color'),
        help_text=_('Hexadecimal, rgba, or CSS color notation (e.g. #ff0011)'),
    )

    class Meta:
        template = 'wagtailcrx/blocks/hero_block.html'
        icon = 'cr-newspaper-o'
        label = 'Hero Unit'