sanic/guide/webapp/display/page/page.py
2023-10-25 02:28:52 +01:00

164 lines
5.0 KiB
Python

from __future__ import annotations
from dataclasses import dataclass, field
from pathlib import Path
from frontmatter import parse
from ..layouts.base import BaseLayout
from ..layouts.home import HomeLayout
from ..layouts.main import MainLayout
from ..markdown import render_markdown
from .docobject import organize_docobjects
_PAGE_CACHE: dict[
str, dict[str, tuple[Page | None, Page | None, Page | None]]
] = {}
_LAYOUTS_CACHE: dict[str, type[BaseLayout]] = {
"home": HomeLayout,
"main": MainLayout,
}
_DEFAULT = "en"
@dataclass
class PageMeta:
language: str = _DEFAULT
title: str = ""
description: str = ""
layout: str = "main"
features: list[dict[str, str]] = field(default_factory=list)
@dataclass
class Page:
path: Path
content: str
meta: PageMeta = field(default_factory=PageMeta)
_relative_path: Path | None = None
next_page: Page | None = None
previous_page: Page | None = None
anchors: list[str] = field(default_factory=list)
DEFAULT_LANGUAGE = _DEFAULT
def get_layout(self) -> type[BaseLayout]:
return _LAYOUTS_CACHE[self.meta.layout]
@property
def relative_path(self) -> Path:
if self._relative_path is None:
raise RuntimeError("Page not initialized")
return self._relative_path
@classmethod
def get(
cls, language: str, path: str
) -> tuple[Page | None, Page | None, Page | None]:
if path.endswith("/") or not path:
path += "index.html"
if not path.endswith(".md"):
path = path.removesuffix(".html") + ".md"
if language == "api":
path = f"/api/{path}"
return _PAGE_CACHE.get(language, {}).get(path, (None, None, None))
@classmethod
def load_pages(cls, base_path: Path, page_order: list[str]) -> list[Page]:
output: list[Page] = []
for path in base_path.glob("**/*.md"):
relative = path.relative_to(base_path)
language = relative.parts[0]
name = "/".join(relative.parts[1:])
page = cls._load_page(path)
output.append(page)
page._relative_path = relative
_PAGE_CACHE.setdefault(language, {})[name] = (
None,
page,
None,
)
_PAGE_CACHE["api"] = {}
for language, pages in _PAGE_CACHE.items():
for name, (_, current, _) in pages.items():
previous_page = None
next_page = None
try:
index = page_order.index(name)
except ValueError:
continue
try:
if index > 0:
previous_page = pages[page_order[index - 1]][1]
except KeyError:
pass
try:
if index < len(page_order) - 1:
next_page = pages[page_order[index + 1]][1]
except KeyError:
pass
pages[name] = (previous_page, current, next_page)
previous_page = None
next_page = None
api_pages = cls._load_api_pages()
filtered_order = [ref for ref in page_order if ref in api_pages]
for idx, ref in enumerate(filtered_order):
current_page = api_pages[ref]
previous_page = None
next_page = None
try:
if idx > 0:
previous_page = api_pages[filtered_order[idx - 1]]
except KeyError:
pass
try:
if idx < len(filtered_order) - 1:
next_page = api_pages[filtered_order[idx + 1]]
except KeyError:
pass
_PAGE_CACHE["api"][ref] = (previous_page, current_page, next_page)
return output
@staticmethod
def _load_page(path: Path) -> Page:
raw = path.read_text()
metadata, raw_content = parse(raw)
content = render_markdown(raw_content)
page = Page(
path=path,
content=content,
meta=PageMeta(**metadata),
)
if not page.meta.title:
page.meta.title = page.path.stem.replace("-", " ").title()
for line in raw.splitlines():
if line.startswith("##") and not line.startswith("###"):
line = line.lstrip("#").strip()
page.anchors.append(line)
return page
@staticmethod
def _load_api_pages() -> dict[str, Page]:
docstring_content = organize_docobjects("sanic")
output: dict[str, Page] = {}
for module, content in docstring_content.items():
path = Path(module)
page = Page(
path=path,
content=content,
meta=PageMeta(
title=path.stem,
description="",
layout="main",
),
)
page._relative_path = Path(f"./{module}")
output[module] = page
return output