136 lines
3.8 KiB
Python
136 lines
3.8 KiB
Python
from itertools import product
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from bs4 import BeautifulSoup, SoupStrainer
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from django.utils import lorem_ipsum
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from django.utils.html import format_html_join
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from wagtail import blocks
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from wagtail.contrib.typed_table_block.blocks import TypedTableBlock
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from wagtail.embeds.blocks import EmbedBlock
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from wagtail.images.blocks import ImageChooserBlock
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from website.common.utils import HEADER_TAGS, heading_id
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from website.contrib.code_block.blocks import CodeBlock
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from website.contrib.mermaid_block.blocks import MermaidBlock
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class LoremBlock(blocks.StructBlock):
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paragraphs = blocks.IntegerBlock(min_value=1)
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def render(self, value: dict, context: dict | None = None) -> str:
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return format_html_join(
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"\n\n",
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"<p>{}</p>",
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[(paragraph,) for paragraph in lorem_ipsum.paragraphs(value["paragraphs"])],
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)
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class Meta:
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icon = "openquote"
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label = "Lorem Ipsum"
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class ImageCaptionBlock(blocks.StructBlock):
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image = ImageChooserBlock()
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caption = blocks.RichTextBlock(editor="plain", required=False)
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class Meta:
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icon = "image"
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label = "Image with caption"
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template = "common/blocks/image-caption.html"
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class TangentBlock(blocks.StructBlock):
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name = blocks.CharBlock(max_length=64)
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content = blocks.RichTextBlock(editor="simple")
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class Meta:
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icon = "comment"
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label = "Tangent"
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template = "common/blocks/tangent.html"
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class IFrameBlock(blocks.StructBlock):
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url = blocks.URLBlock()
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caption = blocks.RichTextBlock(editor="plain", required=False)
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class Meta:
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icon = "link-external"
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label = "IFrame"
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template = "common/blocks/iframe.html"
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IGNORE_PLAINTEXT_BLOCKS = (
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blocks.RawHTMLBlock,
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EmbedBlock,
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ImageCaptionBlock,
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CodeBlock,
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MermaidBlock,
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IFrameBlock,
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)
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IGNORE_HEADING_BLOCKS = (*IGNORE_PLAINTEXT_BLOCKS, LoremBlock)
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def get_blocks() -> list[tuple[str, blocks.BaseBlock]]:
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return [
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("embed", EmbedBlock()),
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("rich_text", blocks.RichTextBlock()),
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("lorem", LoremBlock()),
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("html", blocks.RawHTMLBlock()),
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("image", ImageCaptionBlock()),
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("code", CodeBlock()),
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("tangent", TangentBlock()),
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("mermaid", MermaidBlock()),
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(
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"table",
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TypedTableBlock(
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[
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(
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"rich_text",
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blocks.RichTextBlock(editor="plain"),
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),
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("numeric", blocks.FloatBlock()),
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("text", blocks.CharBlock()),
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]
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),
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),
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("iframe", IFrameBlock()),
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]
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def get_content_html(html: str) -> str:
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"""
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Get the HTML of just original content (eg not embeds etc)
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"""
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block_classes = [
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f"block-{block_name}"
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for block_name, block in get_blocks()
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if not isinstance(block, IGNORE_PLAINTEXT_BLOCKS)
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]
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soup = BeautifulSoup(html, "lxml", parse_only=SoupStrainer(class_=block_classes))
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# If the first block is a tangent, remove it
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first_block = soup.find("div", class_=block_classes)
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if first_block and first_block.attrs["class"][0].endswith("tangent"):
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first_block.extract()
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return str(soup)
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def add_heading_anchors(html: str) -> str:
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targets: list[str] = [
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f".block-{block_name} {header_tag}"
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for header_tag, block_name in product(
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HEADER_TAGS,
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[b[0] for b in get_blocks() if not isinstance(b[1], IGNORE_HEADING_BLOCKS)],
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)
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]
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soup = BeautifulSoup(html, "lxml")
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for tag in soup.select(", ".join(targets)):
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slug = heading_id(tag.text)
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anchor = soup.new_tag("a", href="#" + slug, id=slug)
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anchor.string = "#"
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anchor.attrs["class"] = "heading-anchor"
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tag.insert(0, anchor)
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return str(soup)
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