debianize-mobilizon/lib/service/metadata/event.ex

50 lines
1.6 KiB
Elixir
Raw Normal View History

defimpl Mobilizon.Service.Metadata, for: Mobilizon.Events.Event do
alias Phoenix.HTML
alias Phoenix.HTML.Tag
alias Mobilizon.Events.Event
2020-01-26 21:36:50 +01:00
alias Mobilizon.Web.JsonLD.ObjectView
alias Mobilizon.Web.MediaProxy
import Mobilizon.Service.Metadata.Utils, only: [process_description: 2, strip_tags: 1]
def build_tags(%Event{} = event, locale \\ "en") do
event = Map.put(event, :description, process_description(event.description, locale))
tags = [
Tag.content_tag(:title, event.title <> " - Mobilizon"),
Tag.tag(:meta, name: "description", content: event.description),
Tag.tag(:meta, property: "og:title", content: event.title),
Tag.tag(:meta, property: "og:url", content: event.url),
Tag.tag(:meta, property: "og:description", content: event.description),
Tag.tag(:meta, property: "og:type", content: "website"),
# Tell Search Engines what's the origin
Tag.tag(:link, rel: "canonical", href: event.url)
]
tags =
if is_nil(event.picture) do
tags
else
tags ++
[
Tag.tag(:meta,
property: "og:image",
content: event.picture.file.url |> MediaProxy.url()
)
]
end
tags ++
[
Tag.tag(:meta, property: "twitter:card", content: "summary_large_image"),
~s{<script type="application/ld+json">#{json(event)}</script>} |> HTML.raw()
]
end
# Insert JSON-LD schema by hand because Tag.content_tag wants to escape it
defp json(%Event{title: title} = event) do
2019-04-17 17:13:20 +02:00
"event.json"
|> ObjectView.render(%{event: %{event | title: strip_tags(title)}})
2019-04-17 17:13:20 +02:00
|> Jason.encode!()
end
end