Commit 850912b0 authored by rinpatch's avatar rinpatch
Browse files

refactor opengraph to a different module with a behaviour

parent 8745c8c9
defmodule Pleroma.Web.Metadata do
alias Phoenix.HTML
alias Pleroma.{Formatter, User}
alias Pleroma.Web.MediaProxy
@parsers Pleroma.Config.get([:metadata, :providers], [])
def build_tags(params) do
if(meta_enabled?(:opengraph), do: opengraph_tags(params), else: [])
|> Enum.map(&to_tag/1)
|> Enum.map(&HTML.safe_to_string/1)
|> Enum.join()
end
def meta_enabled?(type) do
Pleroma.Config.get([:metadata, type], false)
end
# opengraph for single status
defp opengraph_tags(%{activity: activity, user: user}) do
with truncated_content = scrub_html_and_truncate(activity.data["object"]["content"]) do
[
{:meta,
[
property: "og:title",
content:
"#{user.name}" <>
if user.local do
"(@#{user.nickname}@{pleroma_domain})"
else
"(@#{user.nickname})"
end
], []},
{:meta, [property: "og:url", content: activity.data["id"]], []},
{:meta, [property: "og:description", content: truncated_content], []},
{:meta, [property: "og:image", content: user_avatar_url(user)], []},
{:meta, [property: "og:image:width", content: 120], []},
{:meta, [property: "og:image:height", content: 120], []},
{:meta, [property: "twitter:card", content: "summary"], []}
]
end
end
Enum.reduce(@parsers, "", fn parser, acc ->
rendered_html =
params
|> parser.build_tags()
|> Enum.map(&to_tag/1)
|> Enum.map(&HTML.safe_to_string/1)
|> Enum.join()
# opengraph for user card
defp opengraph_tags(%{user: user}) do
with truncated_bio = scrub_html_and_truncate(user.bio || "") do
[
{:meta,
[
property: "og:title",
content: "#{user.name} (@#{user.nickname}@#{pleroma_domain()}) profile"
], []},
{:meta, [property: "og:url", content: User.profile_url(user)], []},
{:meta, [property: "og:description", content: truncated_bio], []},
{:meta, [property: "og:image", content: user_avatar_url(user)], []},
{:meta, [property: "og:image:width", content: 120], []},
{:meta, [property: "og:image:height", content: 120], []},
{:meta, [property: "twitter:card", content: "summary"], []}
]
end
end
defp opengraph_tags(_) do
[]
acc <> rendered_html
end)
end
def to_tag(data) do
......@@ -73,20 +26,4 @@ def to_tag(data) do
raise ArgumentError, message: "make_tag invalid args"
end
end
defp scrub_html_and_truncate(content) do
content
# html content comes from DB already encoded, decode first and scrub after
|> HtmlEntities.decode()
|> Pleroma.HTML.strip_tags()
|> Formatter.truncate()
end
defp user_avatar_url(user) do
User.avatar_url(user) |> MediaProxy.url()
end
def pleroma_domain do
Pleroma.Web.Endpoint.host()
end
end
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.data["object"]["content"]) do
[
{:meta,
[
property: "og:title",
content: user_name_string(user)
], []},
{:meta, [property: "og:url", content: activity.data["id"]], []},
{:meta, [property: "og:description", content: truncated_content], []},
{:meta, [property: "og:image", content: user_avatar_url(user)], []},
{:meta, [property: "og:image:width", content: 120], []},
{:meta, [property: "og:image:height", content: 120], []},
{:meta, [property: "twitter:card", content: "summary"], []}
]
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: user_avatar_url(user)], []},
{:meta, [property: "og:image:width", content: 120], []},
{:meta, [property: "og:image:height", content: 120], []},
{:meta, [property: "twitter:card", content: "summary"], []}
]
end
end
defp scrub_html_and_truncate(content) do
content
# html content comes from DB already encoded, decode first and scrub after
|> HtmlEntities.decode()
|> HTML.strip_tags()
|> Formatter.truncate()
end
defp user_avatar_url(user) do
User.avatar_url(user) |> MediaProxy.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
defmodule Pleroma.Web.Metadata.Providers.Provider do
@callback build_tags(map()) :: list()
end
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