109 lines
3.4 KiB
Elixir
109 lines
3.4 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
defmodule Pleroma.Web.Metadata.Providers.OpenGraph do
|
|
alias Pleroma.Web.Metadata.Providers.Provider
|
|
alias Pleroma.{HTML, Formatter, User}
|
|
alias Pleroma.Web.MediaProxy
|
|
|
|
@behaviour Provider
|
|
|
|
@impl Provider
|
|
def build_tags(%{activity: activity, user: user}) do
|
|
with truncated_content = scrub_html_and_truncate(activity) do
|
|
attachments = build_attachments(activity)
|
|
|
|
[
|
|
{:meta,
|
|
[
|
|
property: "og:title",
|
|
content: user_name_string(user)
|
|
], []},
|
|
{:meta, [property: "og:url", content: activity.data["id"]], []},
|
|
{:meta, [property: "og:description", content: truncated_content], []}
|
|
] ++
|
|
if attachments == [] or
|
|
Enum.any?(activity.data["object"]["tag"], fn tag -> tag == "nsfw" end) do
|
|
[
|
|
{:meta, [property: "og:image", content: attachment_url(User.avatar_url(user))], []},
|
|
{:meta, [property: "og:image:width", content: 120], []},
|
|
{:meta, [property: "og:image:height", content: 120], []}
|
|
]
|
|
else
|
|
attachments
|
|
end
|
|
end
|
|
end
|
|
|
|
@impl Provider
|
|
def build_tags(%{user: user}) do
|
|
with truncated_bio = scrub_html_and_truncate(user.bio || "") do
|
|
[
|
|
{:meta,
|
|
[
|
|
property: "og:title",
|
|
content: user_name_string(user)
|
|
], []},
|
|
{:meta, [property: "og:url", content: User.profile_url(user)], []},
|
|
{:meta, [property: "og:description", content: truncated_bio], []},
|
|
{:meta, [property: "og:image", content: attachment_url(User.avatar_url(user))], []},
|
|
{:meta, [property: "og:image:width", content: 120], []},
|
|
{:meta, [property: "og:image:height", content: 120], []}
|
|
]
|
|
end
|
|
end
|
|
|
|
defp build_attachments(%{data: %{"object" => %{"attachment" => attachments}}} = _activity) do
|
|
Enum.reduce(attachments, [], fn attachment, acc ->
|
|
rendered_tags =
|
|
Enum.reduce(attachment["url"], [], fn url, acc ->
|
|
media_type =
|
|
Enum.find(["image", "audio", "video"], fn media_type ->
|
|
String.starts_with?(url["mediaType"], media_type)
|
|
end)
|
|
|
|
if media_type do
|
|
[
|
|
{:meta, [property: "og:" <> media_type, content: attachment_url(url["href"])], []}
|
|
| acc
|
|
]
|
|
else
|
|
acc
|
|
end
|
|
end)
|
|
|
|
acc ++ rendered_tags
|
|
end)
|
|
end
|
|
|
|
defp scrub_html_and_truncate(%{data: %{"object" => %{"content" => content}}} = activity) do
|
|
content
|
|
# html content comes from DB already encoded, decode first and scrub after
|
|
|> HtmlEntities.decode()
|
|
|> String.replace(~r/<br\s?\/?>/, " ")
|
|
|> HTML.get_cached_stripped_html_for_object(activity, __MODULE__)
|
|
|> Formatter.truncate()
|
|
end
|
|
|
|
defp scrub_html_and_truncate(content) when is_binary(content) do
|
|
content
|
|
# html content comes from DB already encoded, decode first and scrub after
|
|
|> HtmlEntities.decode()
|
|
|> String.replace(~r/<br\s?\/?>/, " ")
|
|
|> HTML.strip_tags()
|
|
|> Formatter.truncate()
|
|
end
|
|
|
|
defp attachment_url(url) do
|
|
MediaProxy.url(url)
|
|
end
|
|
|
|
defp user_name_string(user) do
|
|
"#{user.name} " <>
|
|
if user.local do
|
|
"(@#{user.nickname}@#{Pleroma.Web.Endpoint.host()})"
|
|
else
|
|
"(@#{user.nickname})"
|
|
end
|
|
end
|
|
end
|