mirror of
https://git.srhtnin.garden/sarah/SaraView.git
synced 2026-10-13 18:28:14 +02:00
106 lines
3.8 KiB
Python
106 lines
3.8 KiB
Python
from __future__ import annotations
|
|
|
|
import html
|
|
import re
|
|
|
|
from pathlib import Path
|
|
from urllib.parse import quote
|
|
|
|
from Core import ResolvePath
|
|
from Explorer import ClassifyFile, GetDirectoryNoteInfo
|
|
from Groups import GuestGroupName
|
|
from Locks import IsPathAccessible
|
|
from Preview import GetMimeType, ReadTextFile, TextFileTypes
|
|
from VarFunctions import ResolvePortals
|
|
|
|
|
|
DescriptionExcerptLength = 200
|
|
|
|
DefaultDescriptions = {
|
|
"directory": "A directory on SaraView.",
|
|
"video": "A video on SaraView.",
|
|
"image": "An image on SaraView.",
|
|
"note": "A note on SaraView.",
|
|
"file": "A file on SaraView.",
|
|
}
|
|
|
|
|
|
def _StripMarkdownForExcerpt(Text: str) -> str:
|
|
Cleaned = re.sub(r"[#*_`>~\[\]]", "", Text)
|
|
Cleaned = re.sub(r"\s+", " ", Cleaned).strip()
|
|
return Cleaned[:DescriptionExcerptLength]
|
|
|
|
|
|
def _DescribeTextFile(RootName: str, RelativePath: str, FilePath: Path, Fallback: str) -> str:
|
|
try:
|
|
Content = ReadTextFile(FilePath)
|
|
Resolved = ResolvePortals(RootName, RelativePath, Content, "", [GuestGroupName])
|
|
Excerpt = _StripMarkdownForExcerpt(Resolved)
|
|
return Excerpt or Fallback
|
|
except (OSError, UnicodeDecodeError):
|
|
return Fallback
|
|
|
|
|
|
def _MetaTag(Property: str, Content: str) -> str:
|
|
return f'<meta property="{html.escape(Property)}" content="{html.escape(Content)}" />'
|
|
|
|
|
|
def BuildOgTags(RootName: str, RelativePath: str, IsDirectoryUrl: bool, BaseUrl: str) -> str | None:
|
|
if not IsPathAccessible(RootName, RelativePath, "", [GuestGroupName]):
|
|
return None
|
|
|
|
try:
|
|
EntryPath = ResolvePath(RootName, RelativePath)
|
|
except ValueError:
|
|
return None
|
|
|
|
if not EntryPath.exists():
|
|
return None
|
|
|
|
EncodedPath = "/".join(quote(Segment) for Segment in RelativePath.split("/") if Segment)
|
|
PageUrl = f"{BaseUrl}/{quote(RootName)}/{EncodedPath}{'/' if IsDirectoryUrl else ''}"
|
|
Tags = [_MetaTag("og:url", PageUrl)]
|
|
|
|
if EntryPath.is_dir():
|
|
NoteInfo = GetDirectoryNoteInfo(EntryPath)
|
|
Description = DefaultDescriptions["directory"]
|
|
|
|
if NoteInfo is not None and NoteInfo["FileType"] in TextFileTypes:
|
|
NotePath = EntryPath / NoteInfo["Name"]
|
|
NoteRelativePath = f"{RelativePath}/{NoteInfo['Name']}" if RelativePath else NoteInfo["Name"]
|
|
Description = _DescribeTextFile(
|
|
RootName, NoteRelativePath, NotePath, DefaultDescriptions["directory"]
|
|
)
|
|
|
|
Tags.append(_MetaTag("og:title", EntryPath.name))
|
|
Tags.append(_MetaTag("og:description", Description))
|
|
Tags.append(_MetaTag("og:type", "website"))
|
|
return "\n".join(Tags)
|
|
|
|
FileType = ClassifyFile(EntryPath)
|
|
MediaUrl = f"{BaseUrl}/public/media/{quote(RootName)}/{EncodedPath}"
|
|
|
|
Tags.append(_MetaTag("og:title", EntryPath.name))
|
|
|
|
if FileType == "video":
|
|
Tags.append(_MetaTag("og:type", "video.other"))
|
|
Tags.append(_MetaTag("og:video", MediaUrl))
|
|
Tags.append(_MetaTag("og:video:url", MediaUrl))
|
|
Tags.append(_MetaTag("og:video:secure_url", MediaUrl))
|
|
Tags.append(_MetaTag("og:video:type", GetMimeType(EntryPath)))
|
|
Tags.append(_MetaTag("og:description", DefaultDescriptions["video"]))
|
|
elif FileType == "image":
|
|
Tags.append(_MetaTag("og:type", "website"))
|
|
Tags.append(_MetaTag("og:image", MediaUrl))
|
|
Tags.append(_MetaTag("og:image:type", GetMimeType(EntryPath)))
|
|
Tags.append(_MetaTag("og:description", DefaultDescriptions["image"]))
|
|
elif FileType in TextFileTypes:
|
|
Description = _DescribeTextFile(RootName, RelativePath, EntryPath, DefaultDescriptions["note"])
|
|
Tags.append(_MetaTag("og:type", "article"))
|
|
Tags.append(_MetaTag("og:description", Description))
|
|
else:
|
|
Tags.append(_MetaTag("og:type", "website"))
|
|
Tags.append(_MetaTag("og:description", DefaultDescriptions["file"]))
|
|
|
|
return "\n".join(Tags)
|