forked from AkkomaGang/akkoma
ac7ef0999d
Twitter cards were not passing any useful metadata. A few things were being handled on Twitter's end by trying to match OpenGraph tags with their own, but it wasn't working at all for media. This is an attempt to fix that. Common functions have been pulled out of opengraph and put into utils. Twitter's functionality was entirely replaced with a direct copy of Opengraph's and then modified as needed. Profiles are now represented as Summary Cards Posts with images are now represented as Summart with Large Image Cards Posts with video and audio attachments are represented as Player Cards. This now passes the Twitter Card Validator. Validator and Docs are below https://cards-dev.twitter.com/validator https://developer.twitter.com/en/docs/tweets/optimize-with-cards/overview/abouts-cards
125 lines
4.1 KiB
Elixir
125 lines
4.1 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.Metadata.Providers.OpenGraph do
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alias Pleroma.User
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alias Pleroma.Web.Metadata
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alias Pleroma.Web.Metadata.Providers.Provider
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alias Pleroma.Web.Metadata.Utils
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@behaviour Provider
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@impl Provider
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def build_tags(%{
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object: object,
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url: url,
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user: user
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}) do
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attachments = build_attachments(object)
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scrubbed_content = Utils.scrub_html_and_truncate(object)
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# Zero width space
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content =
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if scrubbed_content != "" and scrubbed_content != "\u200B" do
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": “" <> scrubbed_content <> "”"
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else
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""
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end
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# Most previews only show og:title which is inconvenient. Instagram
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# hacks this by putting the description in the title and making the
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# description longer prefixed by how many likes and shares the post
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# has. Here we use the descriptive nickname in the title, and expand
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# the full account & nickname in the description. We also use the cute^Wevil
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# smart quotes around the status text like Instagram, too.
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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}" <> content
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], []},
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{:meta, [property: "og:url", content: url], []},
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{:meta,
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[
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property: "og:description",
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content: "#{Utils.user_name_string(user)}" <> content
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], []},
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{:meta, [property: "og:type", content: "website"], []}
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] ++
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if attachments == [] or Metadata.activity_nsfw?(object) do
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[
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{:meta, [property: "og:image", content: Utils.attachment_url(User.avatar_url(user))],
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[]},
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{:meta, [property: "og:image:width", content: 150], []},
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{:meta, [property: "og:image:height", content: 150], []}
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]
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else
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attachments
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end
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end
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@impl Provider
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def build_tags(%{user: user}) do
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with truncated_bio = Utils.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: Utils.user_name_string(user)
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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:type", content: "website"], []},
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{:meta, [property: "og:image", content: Utils.attachment_url(User.avatar_url(user))], []},
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{:meta, [property: "og:image:width", content: 150], []},
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{:meta, [property: "og:image:height", content: 150], []}
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]
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end
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end
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defp build_attachments(%{data: %{"attachment" => attachments}}) do
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Enum.reduce(attachments, [], fn attachment, acc ->
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rendered_tags =
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Enum.reduce(attachment["url"], [], fn url, acc ->
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media_type =
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Enum.find(["image", "audio", "video"], fn media_type ->
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String.starts_with?(url["mediaType"], media_type)
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end)
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# TODO: Add additional properties to objects when we have the data available.
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# Also, Whatsapp only wants JPEG or PNGs. It seems that if we add a second og:image
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# object when a Video or GIF is attached it will display that in the Whatsapp Rich Preview.
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case media_type do
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"audio" ->
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[
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{:meta,
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[property: "og:" <> media_type, content: Utils.attachment_url(url["href"])], []}
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| acc
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]
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"image" ->
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[
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{:meta, [property: "og:" <> media_type, content: Utils.attachment_url(url["href"])],
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[]},
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{:meta, [property: "og:image:width", content: 150], []},
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{:meta, [property: "og:image:height", content: 150], []}
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| acc
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]
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"video" ->
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[
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{:meta,
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[property: "og:" <> media_type, content: Utils.attachment_url(url["href"])], []}
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| acc
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]
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_ ->
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acc
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end
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end)
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acc ++ rendered_tags
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end)
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end
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end
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