mobilizon/lib/service/metadata/post.ex
Thomas Citharel 9c9f1385fb
Introduce group posts
Signed-off-by: Thomas Citharel <tcit@tcit.fr>
2020-07-30 16:55:35 +02:00

35 lines
1.3 KiB
Elixir

defimpl Mobilizon.Service.Metadata, for: Mobilizon.Posts.Post do
alias Phoenix.HTML
alias Phoenix.HTML.Tag
alias Mobilizon.Posts.Post
alias Mobilizon.Web.JsonLD.ObjectView
import Mobilizon.Service.Metadata.Utils, only: [process_description: 2, strip_tags: 1]
def build_tags(%Post{} = post, locale \\ "en") do
post = Map.put(post, :body, process_description(post.body, locale))
tags = [
Tag.tag(:meta, property: "og:title", content: post.title),
Tag.tag(:meta, property: "og:url", content: post.url),
Tag.tag(:meta, property: "og:description", content: post.body),
Tag.tag(:meta, property: "og:type", content: "article"),
Tag.tag(:meta, property: "twitter:card", content: "summary"),
# Tell Search Engines what's the origin
Tag.tag(:link, rel: "canonical", href: post.url)
]
tags ++
[
Tag.tag(:meta, property: "twitter:card", content: "summary_large_image"),
~s{<script type="application/ld+json">#{json(post)}</script>} |> HTML.raw()
]
end
# Insert JSON-LD schema by hand because Tag.content_tag wants to escape it
defp json(%Post{title: title} = post) do
"post.json"
|> ObjectView.render(%{post: %{post | title: strip_tags(title)}})
|> Jason.encode!()
end
end