157 lines
5 KiB
Elixir
157 lines
5 KiB
Elixir
defmodule Pleroma.Web.OStatus.NoteHandler do
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require Logger
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alias Pleroma.Web.{XML, OStatus}
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alias Pleroma.{Object, Activity}
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alias Pleroma.Web.ActivityPub.ActivityPub
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alias Pleroma.Web.ActivityPub.Utils
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alias Pleroma.Web.CommonAPI
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@doc """
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Get the context for this note. Uses this:
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1. The context of the parent activity
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2. The conversation reference in the ostatus xml
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3. A newly generated context id.
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"""
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def get_context(entry, inReplyTo) do
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context =
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(XML.string_from_xpath("//ostatus:conversation[1]", entry) ||
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XML.string_from_xpath("//ostatus:conversation[1]/@ref", entry) || "")
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|> String.trim()
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with %{data: %{"context" => context}} <- Object.get_cached_by_ap_id(inReplyTo) do
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context
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else
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_e ->
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if String.length(context) > 0 do
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context
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else
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Utils.generate_context_id()
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end
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end
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end
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def get_people_mentions(entry) do
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:xmerl_xpath.string(
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'//link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/person"]',
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entry
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)
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|> Enum.map(fn person -> XML.string_from_xpath("@href", person) end)
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end
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def get_collection_mentions(entry) do
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transmogrify = fn
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"http://activityschema.org/collection/public" ->
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"https://www.w3.org/ns/activitystreams#Public"
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group ->
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group
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end
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:xmerl_xpath.string(
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'//link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/collection"]',
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entry
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)
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|> Enum.map(fn collection -> XML.string_from_xpath("@href", collection) |> transmogrify.() end)
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end
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def get_mentions(entry) do
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(get_people_mentions(entry) ++ get_collection_mentions(entry))
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|> Enum.filter(& &1)
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end
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def get_emoji(entry) do
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try do
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:xmerl_xpath.string('//link[@rel="emoji"]', entry)
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|> Enum.reduce(%{}, fn emoji, acc ->
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Map.put(acc, XML.string_from_xpath("@name", emoji), XML.string_from_xpath("@href", emoji))
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end)
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rescue
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_e -> nil
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end
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end
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def make_to_list(actor, mentions) do
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[
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actor.follower_address
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] ++ mentions
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end
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def add_external_url(note, entry) do
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url = XML.string_from_xpath("//link[@rel='alternate' and @type='text/html']/@href", entry)
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Map.put(note, "external_url", url)
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end
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def fetch_replied_to_activity(entry, inReplyTo) do
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with %Activity{} = activity <- Activity.get_create_activity_by_object_ap_id(inReplyTo) do
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activity
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else
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_e ->
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with inReplyToHref when not is_nil(inReplyToHref) <-
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XML.string_from_xpath("//thr:in-reply-to[1]/@href", entry),
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{:ok, [activity | _]} <- OStatus.fetch_activity_from_url(inReplyToHref) do
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activity
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else
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_e -> nil
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end
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end
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end
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# TODO: Clean this up a bit.
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def handle_note(entry, doc \\ nil) do
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with id <- XML.string_from_xpath("//id", entry),
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activity when is_nil(activity) <- Activity.get_create_activity_by_object_ap_id(id),
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[author] <- :xmerl_xpath.string('//author[1]', doc),
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{:ok, actor} <- OStatus.find_make_or_update_user(author),
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content_html <- OStatus.get_content(entry),
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cw <- OStatus.get_cw(entry),
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inReplyTo <- XML.string_from_xpath("//thr:in-reply-to[1]/@ref", entry),
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inReplyToActivity <- fetch_replied_to_activity(entry, inReplyTo),
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inReplyToObject <- (inReplyToActivity && Object.normalize(inReplyToActivity.data["object"])) || nil,
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inReplyTo <- (inReplyToObject && inReplyToObject.data["id"]) || inReplyTo,
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attachments <- OStatus.get_attachments(entry),
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context <- get_context(entry, inReplyTo),
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tags <- OStatus.get_tags(entry),
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mentions <- get_mentions(entry),
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to <- make_to_list(actor, mentions),
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date <- XML.string_from_xpath("//published", entry),
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unlisted <- XML.string_from_xpath("//mastodon:scope", entry) == "unlisted",
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cc <- if(unlisted, do: ["https://www.w3.org/ns/activitystreams#Public"], else: []),
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note <-
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CommonAPI.Utils.make_note_data(
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actor.ap_id,
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to,
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context,
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content_html,
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attachments,
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inReplyToActivity,
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[],
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cw
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),
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note <- note |> Map.put("id", id) |> Map.put("tag", tags),
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note <- note |> Map.put("published", date),
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note <- note |> Map.put("emoji", get_emoji(entry)),
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note <- add_external_url(note, entry),
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note <- note |> Map.put("cc", cc),
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# TODO: Handle this case in make_note_data
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note <-
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if(
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inReplyTo && !inReplyToActivity,
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do: note |> Map.put("inReplyTo", inReplyTo),
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else: note
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) do
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ActivityPub.create(%{
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to: to,
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actor: actor,
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context: context,
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object: note,
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published: date,
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local: false,
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additional: %{"cc" => cc}
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})
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else
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%Activity{} = activity -> {:ok, activity}
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e -> {:error, e}
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end
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end
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end
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