forked from AkkomaGang/akkoma
127 lines
4.7 KiB
Elixir
127 lines
4.7 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, User, 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 _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('//link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/person"]', entry)
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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('//link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/collection"]', entry)
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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)
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++ 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) <- 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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inReplyTo <- (inReplyToActivity && inReplyToActivity.data["object"]["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 <- CommonAPI.Utils.make_note_data(actor.ap_id, to, context, content_html, attachments, inReplyToActivity, [], cw),
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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 <- (if inReplyTo && !inReplyToActivity, do: note |> Map.put("inReplyTo", inReplyTo), else: note)
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do
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res = ActivityPub.create(%{to: to, actor: actor, context: context, object: note, published: date, local: false, additional: %{"cc" => cc}})
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User.increase_note_count(actor)
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res
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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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