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- # Pleroma: A lightweight social networking server
- # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
- # SPDX-License-Identifier: AGPL-3.0-only
-
- defmodule Pleroma.Web.MastodonAPI.StatusView do
- use Pleroma.Web, :view
-
- require Pleroma.Constants
-
- alias Pleroma.Activity
- alias Pleroma.HTML
- alias Pleroma.Object
- alias Pleroma.Repo
- alias Pleroma.User
- alias Pleroma.UserRelationship
- alias Pleroma.Web.CommonAPI
- alias Pleroma.Web.CommonAPI.Utils
- alias Pleroma.Web.MastodonAPI.AccountView
- alias Pleroma.Web.MastodonAPI.PollView
- alias Pleroma.Web.MastodonAPI.StatusView
- alias Pleroma.Web.MediaProxy
- alias Pleroma.Web.PleromaAPI.EmojiReactionController
-
- import Pleroma.Web.ActivityPub.Visibility, only: [get_visibility: 1, visible_for_user?: 2]
-
- # This is a naive way to do this, just spawning a process per activity
- # to fetch the preview. However it should be fine considering
- # pagination is restricted to 40 activities at a time
- defp fetch_rich_media_for_activities(activities) do
- Enum.each(activities, fn activity ->
- spawn(fn ->
- Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)
- end)
- end)
- end
-
- # TODO: Add cached version.
- defp get_replied_to_activities([]), do: %{}
-
- defp get_replied_to_activities(activities) do
- activities
- |> Enum.map(fn
- %{data: %{"type" => "Create"}} = activity ->
- object = Object.normalize(activity, fetch: false)
- object && object.data["inReplyTo"] != "" && object.data["inReplyTo"]
-
- _ ->
- nil
- end)
- |> Enum.filter(& &1)
- |> Activity.create_by_object_ap_id_with_object()
- |> Repo.all()
- |> Enum.reduce(%{}, fn activity, acc ->
- object = Object.normalize(activity, fetch: false)
- if object, do: Map.put(acc, object.data["id"], activity), else: acc
- end)
- end
-
- defp get_context_id(%{data: %{"context_id" => context_id}}) when not is_nil(context_id),
- do: context_id
-
- defp get_context_id(%{data: %{"context" => context}}) when is_binary(context),
- do: Utils.context_to_conversation_id(context)
-
- defp get_context_id(_), do: nil
-
- defp reblogged?(activity, user) do
- object = Object.normalize(activity, fetch: false) || %{}
- present?(user && user.ap_id in (object.data["announcements"] || []))
- end
-
- def render("index.json", opts) do
- reading_user = opts[:for]
-
- # To do: check AdminAPIControllerTest on the reasons behind nil activities in the list
- activities = Enum.filter(opts.activities, & &1)
-
- # Start fetching rich media before doing anything else, so that later calls to get the cards
- # only block for timeout in the worst case, as opposed to
- # length(activities_with_links) * timeout
- fetch_rich_media_for_activities(activities)
- replied_to_activities = get_replied_to_activities(activities)
-
- parent_activities =
- activities
- |> Enum.filter(&(&1.data["type"] == "Announce" && &1.data["object"]))
- |> Enum.map(&Object.normalize(&1, fetch: false).data["id"])
- |> Activity.create_by_object_ap_id()
- |> Activity.with_preloaded_object(:left)
- |> Activity.with_preloaded_bookmark(reading_user)
- |> Activity.with_set_thread_muted_field(reading_user)
- |> Repo.all()
-
- relationships_opt =
- cond do
- Map.has_key?(opts, :relationships) ->
- opts[:relationships]
-
- is_nil(reading_user) ->
- UserRelationship.view_relationships_option(nil, [])
-
- true ->
- # Note: unresolved users are filtered out
- actors =
- (activities ++ parent_activities)
- |> Enum.map(&CommonAPI.get_user(&1.data["actor"], false))
- |> Enum.filter(& &1)
-
- UserRelationship.view_relationships_option(reading_user, actors, subset: :source_mutes)
- end
-
- opts =
- opts
- |> Map.put(:replied_to_activities, replied_to_activities)
- |> Map.put(:parent_activities, parent_activities)
- |> Map.put(:relationships, relationships_opt)
-
- safe_render_many(activities, StatusView, "show.json", opts)
- end
-
- def render(
- "show.json",
- %{activity: %{data: %{"type" => "Announce", "object" => _object}} = activity} = opts
- ) do
- user = CommonAPI.get_user(activity.data["actor"])
- created_at = Utils.to_masto_date(activity.data["published"])
- activity_object = Object.normalize(activity, fetch: false)
-
- reblogged_parent_activity =
- if opts[:parent_activities] do
- Activity.Queries.find_by_object_ap_id(
- opts[:parent_activities],
- activity_object.data["id"]
- )
- else
- Activity.create_by_object_ap_id(activity_object.data["id"])
- |> Activity.with_preloaded_bookmark(opts[:for])
- |> Activity.with_set_thread_muted_field(opts[:for])
- |> Repo.one()
- end
-
- reblog_rendering_opts = Map.put(opts, :activity, reblogged_parent_activity)
- reblogged = render("show.json", reblog_rendering_opts)
-
- favorited = opts[:for] && opts[:for].ap_id in (activity_object.data["likes"] || [])
-
- bookmarked = Activity.get_bookmark(reblogged_parent_activity, opts[:for]) != nil
-
- mentions =
- activity.recipients
- |> Enum.map(fn ap_id -> User.get_cached_by_ap_id(ap_id) end)
- |> Enum.filter(& &1)
- |> Enum.map(fn user -> AccountView.render("mention.json", %{user: user}) end)
-
- %{
- id: to_string(activity.id),
- uri: activity_object.data["id"],
- url: activity_object.data["id"],
- account:
- AccountView.render("show.json", %{
- user: user,
- for: opts[:for]
- }),
- in_reply_to_id: nil,
- in_reply_to_account_id: nil,
- reblog: reblogged,
- content: reblogged[:content] || "",
- created_at: created_at,
- reblogs_count: 0,
- replies_count: 0,
- favourites_count: 0,
- reblogged: reblogged?(reblogged_parent_activity, opts[:for]),
- favourited: present?(favorited),
- bookmarked: present?(bookmarked),
- muted: false,
- pinned: pinned?(activity, user),
- sensitive: false,
- spoiler_text: "",
- visibility: get_visibility(activity),
- media_attachments: reblogged[:media_attachments] || [],
- mentions: mentions,
- tags: reblogged[:tags] || [],
- application: build_application(activity_object.data["generator"]),
- language: nil,
- emojis: [],
- pleroma: %{
- local: activity.local
- }
- }
- end
-
- def render("show.json", %{activity: %{data: %{"object" => _object}} = activity} = opts) do
- object = Object.normalize(activity, fetch: false)
-
- user = CommonAPI.get_user(activity.data["actor"])
- user_follower_address = user.follower_address
-
- like_count = object.data["like_count"] || 0
- announcement_count = object.data["announcement_count"] || 0
-
- tags = object.data["tag"] || []
- sensitive = object.data["sensitive"] || Enum.member?(tags, "nsfw")
-
- tag_mentions =
- tags
- |> Enum.filter(fn tag -> is_map(tag) and tag["type"] == "Mention" end)
- |> Enum.map(fn tag -> tag["href"] end)
-
- mentions =
- (object.data["to"] ++ tag_mentions)
- |> Enum.uniq()
- |> Enum.map(fn
- Pleroma.Constants.as_public() -> nil
- ^user_follower_address -> nil
- ap_id -> User.get_cached_by_ap_id(ap_id)
- end)
- |> Enum.filter(& &1)
- |> Enum.map(fn user -> AccountView.render("mention.json", %{user: user}) end)
-
- favorited = opts[:for] && opts[:for].ap_id in (object.data["likes"] || [])
-
- bookmarked = Activity.get_bookmark(activity, opts[:for]) != nil
-
- client_posted_this_activity = opts[:for] && user.id == opts[:for].id
-
- expires_at =
- with true <- client_posted_this_activity,
- %Oban.Job{scheduled_at: scheduled_at} <-
- Pleroma.Workers.PurgeExpiredActivity.get_expiration(activity.id) do
- scheduled_at
- else
- _ -> nil
- end
-
- thread_muted? =
- cond do
- is_nil(opts[:for]) -> false
- is_boolean(activity.thread_muted?) -> activity.thread_muted?
- true -> CommonAPI.thread_muted?(opts[:for], activity)
- end
-
- attachment_data = object.data["attachment"] || []
- attachments = render_many(attachment_data, StatusView, "attachment.json", as: :attachment)
-
- created_at = Utils.to_masto_date(object.data["published"])
-
- reply_to = get_reply_to(activity, opts)
-
- reply_to_user = reply_to && CommonAPI.get_user(reply_to.data["actor"])
-
- content =
- object
- |> render_content()
-
- content_html =
- content
- |> Activity.HTML.get_cached_scrubbed_html_for_activity(
- User.html_filter_policy(opts[:for]),
- activity,
- "mastoapi:content"
- )
-
- content_plaintext =
- content
- |> Activity.HTML.get_cached_stripped_html_for_activity(
- activity,
- "mastoapi:content"
- )
-
- summary = object.data["summary"] || ""
-
- card = render("card.json", Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity))
-
- url =
- if user.local do
- Pleroma.Web.Router.Helpers.o_status_url(Pleroma.Web.Endpoint, :notice, activity)
- else
- object.data["url"] || object.data["external_url"] || object.data["id"]
- end
-
- direct_conversation_id =
- with {_, nil} <- {:direct_conversation_id, opts[:direct_conversation_id]},
- {_, true} <- {:include_id, opts[:with_direct_conversation_id]},
- {_, %User{} = for_user} <- {:for_user, opts[:for]} do
- Activity.direct_conversation_id(activity, for_user)
- else
- {:direct_conversation_id, participation_id} when is_integer(participation_id) ->
- participation_id
-
- _e ->
- nil
- end
-
- emoji_reactions =
- object.data
- |> Map.get("reactions", [])
- |> EmojiReactionController.filter_allowed_users(
- opts[:for],
- Map.get(opts, :with_muted, false)
- )
- |> Stream.map(fn {emoji, users} ->
- build_emoji_map(emoji, users, opts[:for])
- end)
- |> Enum.to_list()
-
- # Status muted state (would do 1 request per status unless user mutes are preloaded)
- muted =
- thread_muted? ||
- UserRelationship.exists?(
- get_in(opts, [:relationships, :user_relationships]),
- :mute,
- opts[:for],
- user,
- fn for_user, user -> User.mutes?(for_user, user) end
- )
-
- %{
- id: to_string(activity.id),
- uri: object.data["id"],
- url: url,
- account:
- AccountView.render("show.json", %{
- user: user,
- for: opts[:for]
- }),
- in_reply_to_id: reply_to && to_string(reply_to.id),
- in_reply_to_account_id: reply_to_user && to_string(reply_to_user.id),
- reblog: nil,
- card: card,
- content: content_html,
- text: opts[:with_source] && object.data["source"],
- created_at: created_at,
- reblogs_count: announcement_count,
- replies_count: object.data["repliesCount"] || 0,
- favourites_count: like_count,
- reblogged: reblogged?(activity, opts[:for]),
- favourited: present?(favorited),
- bookmarked: present?(bookmarked),
- muted: muted,
- pinned: pinned?(activity, user),
- sensitive: sensitive,
- spoiler_text: summary,
- visibility: get_visibility(object),
- media_attachments: attachments,
- poll: render(PollView, "show.json", object: object, for: opts[:for]),
- mentions: mentions,
- tags: build_tags(tags),
- application: build_application(object.data["generator"]),
- language: nil,
- emojis: build_emojis(object.data["emoji"]),
- pleroma: %{
- local: activity.local,
- conversation_id: get_context_id(activity),
- in_reply_to_account_acct: reply_to_user && reply_to_user.nickname,
- content: %{"text/plain" => content_plaintext},
- spoiler_text: %{"text/plain" => summary},
- expires_at: expires_at,
- direct_conversation_id: direct_conversation_id,
- thread_muted: thread_muted?,
- emoji_reactions: emoji_reactions,
- parent_visible: visible_for_user?(reply_to, opts[:for])
- }
- }
- end
-
- def render("show.json", _) do
- nil
- end
-
- def render("card.json", %{rich_media: rich_media, page_url: page_url}) do
- page_url_data = URI.parse(page_url)
-
- page_url_data =
- if is_binary(rich_media["url"]) do
- URI.merge(page_url_data, URI.parse(rich_media["url"]))
- else
- page_url_data
- end
-
- page_url = page_url_data |> to_string
-
- image_url =
- if is_binary(rich_media["image"]) do
- URI.merge(page_url_data, URI.parse(rich_media["image"]))
- |> to_string
- end
-
- %{
- type: "link",
- provider_name: page_url_data.host,
- provider_url: page_url_data.scheme <> "://" <> page_url_data.host,
- url: page_url,
- image: image_url |> MediaProxy.url(),
- title: rich_media["title"] || "",
- description: rich_media["description"] || "",
- pleroma: %{
- opengraph: rich_media
- }
- }
- end
-
- def render("card.json", _), do: nil
-
- def render("attachment.json", %{attachment: attachment}) do
- [attachment_url | _] = attachment["url"]
- media_type = attachment_url["mediaType"] || attachment_url["mimeType"] || "image"
- href = attachment_url["href"] |> MediaProxy.url()
- href_preview = attachment_url["href"] |> MediaProxy.preview_url()
-
- type =
- cond do
- String.contains?(media_type, "image") -> "image"
- String.contains?(media_type, "video") -> "video"
- String.contains?(media_type, "audio") -> "audio"
- true -> "unknown"
- end
-
- <<hash_id::signed-32, _rest::binary>> = :crypto.hash(:md5, href)
-
- %{
- id: to_string(attachment["id"] || hash_id),
- url: href,
- remote_url: href,
- preview_url: href_preview,
- text_url: href,
- type: type,
- description: attachment["name"],
- pleroma: %{mime_type: media_type},
- blurhash: attachment["blurhash"]
- }
- end
-
- def render("context.json", %{activity: activity, activities: activities, user: user}) do
- %{ancestors: ancestors, descendants: descendants} =
- activities
- |> Enum.reverse()
- |> Enum.group_by(fn %{id: id} -> if id < activity.id, do: :ancestors, else: :descendants end)
- |> Map.put_new(:ancestors, [])
- |> Map.put_new(:descendants, [])
-
- %{
- ancestors: render("index.json", for: user, activities: ancestors, as: :activity),
- descendants: render("index.json", for: user, activities: descendants, as: :activity)
- }
- end
-
- def get_reply_to(activity, %{replied_to_activities: replied_to_activities}) do
- object = Object.normalize(activity, fetch: false)
-
- with nil <- replied_to_activities[object.data["inReplyTo"]] do
- # If user didn't participate in the thread
- Activity.get_in_reply_to_activity(activity)
- end
- end
-
- def get_reply_to(%{data: %{"object" => _object}} = activity, _) do
- object = Object.normalize(activity, fetch: false)
-
- if object.data["inReplyTo"] && object.data["inReplyTo"] != "" do
- Activity.get_create_by_object_ap_id(object.data["inReplyTo"])
- else
- nil
- end
- end
-
- def render_content(%{data: %{"name" => name}} = object) when not is_nil(name) and name != "" do
- url = object.data["url"] || object.data["id"]
-
- "<p><a href=\"#{url}\">#{name}</a></p>#{object.data["content"]}"
- end
-
- def render_content(object), do: object.data["content"] || ""
-
- @doc """
- Builds a dictionary tags.
-
- ## Examples
-
- iex> Pleroma.Web.MastodonAPI.StatusView.build_tags(["fediverse", "nextcloud"])
- [{"name": "fediverse", "url": "/tag/fediverse"},
- {"name": "nextcloud", "url": "/tag/nextcloud"}]
-
- """
- @spec build_tags(list(any())) :: list(map())
- def build_tags(object_tags) when is_list(object_tags) do
- object_tags
- |> Enum.filter(&is_binary/1)
- |> Enum.map(&%{name: &1, url: "#{Pleroma.Web.Endpoint.url()}/tag/#{URI.encode(&1)}"})
- end
-
- def build_tags(_), do: []
-
- @doc """
- Builds list emojis.
-
- Arguments: `nil` or list tuple of name and url.
-
- Returns list emojis.
-
- ## Examples
-
- iex> Pleroma.Web.MastodonAPI.StatusView.build_emojis([{"2hu", "corndog.png"}])
- [%{shortcode: "2hu", static_url: "corndog.png", url: "corndog.png", visible_in_picker: false}]
-
- """
- @spec build_emojis(nil | list(tuple())) :: list(map())
- def build_emojis(nil), do: []
-
- def build_emojis(emojis) do
- emojis
- |> Enum.map(fn {name, url} ->
- name = HTML.strip_tags(name)
-
- url =
- url
- |> HTML.strip_tags()
- |> MediaProxy.url()
-
- %{shortcode: name, url: url, static_url: url, visible_in_picker: false}
- end)
- end
-
- defp present?(nil), do: false
- defp present?(false), do: false
- defp present?(_), do: true
-
- defp pinned?(%Activity{id: id}, %User{pinned_activities: pinned_activities}),
- do: id in pinned_activities
-
- defp build_emoji_map(emoji, users, current_user) do
- %{
- name: emoji,
- count: length(users),
- me: !!(current_user && current_user.ap_id in users)
- }
- end
-
- @spec build_application(map() | nil) :: map() | nil
- defp build_application(%{type: _type, name: name, url: url}), do: %{name: name, website: url}
- defp build_application(_), do: nil
- end
|