89 lines
2.7 KiB
Elixir
89 lines
2.7 KiB
Elixir
defmodule Pleroma.Web.Metadata do
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alias Phoenix.HTML
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alias Pleroma.{Formatter, User}
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alias Pleroma.Web.MediaProxy
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def build_tags(params) do
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if(meta_enabled?(:opengraph), do: opengraph_tags(params), else: [])
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|> Enum.map(&to_tag/1)
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|> Enum.map(&HTML.safe_to_string/1)
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|> Enum.join("\n")
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end
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def meta_enabled?(type) do
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Pleroma.Config.get([:metadata, type], false)
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end
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# opengraph for single status
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defp opengraph_tags(%{activity: activity, user: user}) do
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with truncated_content = scrub_html_and_truncate(activity.data["object"]["content"]) do
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[
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{:meta,
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[
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property: "og:title",
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content:
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"#{user.name}" <>
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if user.local do
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"(@#{user.nickname}@{pleroma_domain})"
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else
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"(@#{user.nickname})"
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end
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], []},
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{:meta, [property: "og:url", content: activity.data["id"]], []},
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{:meta, [property: "og:description", content: truncated_content], []},
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{:meta, [property: "og:image", content: user_avatar_url(user)], []},
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{:meta, [property: "og:image:width", content: 120], []},
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{:meta, [property: "og:image:height", content: 120], []},
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{:meta, [property: "twitter:card", content: "summary"], []}
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]
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end
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end
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# opengraph for user card
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defp opengraph_tags(%{user: user}) do
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with truncated_bio = scrub_html_and_truncate(user.bio || "") do
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[
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{:meta,
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[
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property: "og:title",
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content: "#{user.name} (@#{user.nickname}@#{pleroma_domain()}) profile"
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], []},
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{:meta, [property: "og:url", content: User.profile_url(user)], []},
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{:meta, [property: "og:description", content: truncated_bio], []},
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{:meta, [property: "og:image", content: user_avatar_url(user)], []},
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{:meta, [property: "og:image:width", content: 120], []},
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{:meta, [property: "og:image:height", content: 120], []},
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{:meta, [property: "twitter:card", content: "summary"], []}
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]
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end
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end
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def to_tag(data) do
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with {name, attrs, _content = []} <- data do
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HTML.Tag.tag(name, attrs)
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else
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{name, attrs, content} ->
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HTML.Tag.content_tag(name, content, attrs)
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_ ->
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raise ArgumentError, message: "make_tag invalid args"
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end
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end
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defp scrub_html_and_truncate(content) do
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content
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# html content comes from DB already encoded, decode first and scrub after
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|> HtmlEntities.decode()
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|> Pleroma.HTML.strip_tags()
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|> Formatter.truncate()
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end
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defp user_avatar_url(user) do
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User.avatar_url(user) |> MediaProxy.url()
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end
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def pleroma_domain do
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Pleroma.Web.Endpoint.host()
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end
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end
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