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from typing import Any, List, Union
from mkdocs.config.defaults import MkDocsConfig
from mkdocs.structure.files import Files
from mkdocs.structure.nav import Link, Navigation, Section
from mkdocs.structure.pages import Page
def generate_renamed_section_items(
items: List[Union[Page, Section, Link]], *, config: MkDocsConfig
) -> List[Union[Page, Section, Link]]:
new_items: List[Union[Page, Section, Link]] = []
for item in items:
if isinstance(item, Section):
new_title = item.title
new_children = generate_renamed_section_items(item.children, config=config)
first_child = new_children[0]
if isinstance(first_child, Page):
if first_child.file.src_path.endswith("index.md"):
# Read the source so that the title is parsed and available
first_child.read_source(config=config)
new_title = first_child.title or new_title
# Creating a new section makes it render it collapsed by default
# no idea why, so, let's just modify the existing one
# new_section = Section(title=new_title, children=new_children)
item.title = new_title
item.children = new_children
new_items.append(item)
else:
new_items.append(item)
return new_items
def on_nav(
nav: Navigation, *, config: MkDocsConfig, files: Files, **kwargs: Any
) -> Navigation:
new_items = generate_renamed_section_items(nav.items, config=config)
return Navigation(items=new_items, pages=nav.pages)
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