# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.MastodonAPI.StatusView do
use Pleroma.Web, :view
alias Pleroma.Activity
alias Pleroma.HTML
alias Pleroma.Object
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Web.CommonAPI
alias Pleroma.Web.CommonAPI.Utils
alias Pleroma.Web.MastodonAPI.AccountView
alias Pleroma.Web.MastodonAPI.StatusView
alias Pleroma.Web.MediaProxy
import Pleroma.Web.ActivityPub.Visibility, only: [get_visibility: 1]
# TODO: Add cached version.
defp get_replied_to_activities(activities) do
activities
|> Enum.map(fn
%{data: %{"type" => "Create", "object" => object}} ->
object = Object.normalize(object)
object.data["inReplyTo"] != "" && object.data["inReplyTo"]
_ ->
nil
end)
|> Enum.filter(& &1)
|> Activity.create_by_object_ap_id()
|> Repo.all()
|> Enum.reduce(%{}, fn activity, acc ->
object = Object.normalize(activity)
Map.put(acc, object.data["id"], activity)
end)
end
defp get_user(ap_id) do
cond do
user = User.get_cached_by_ap_id(ap_id) ->
user
user = User.get_by_guessed_nickname(ap_id) ->
user
true ->
User.error_user(ap_id)
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) || %{}
present?(user && user.ap_id in (object.data["announcements"] || []))
end
def render("index.json", opts) do
replied_to_activities = get_replied_to_activities(opts.activities)
opts.activities
|> safe_render_many(
StatusView,
"status.json",
Map.put(opts, :replied_to_activities, replied_to_activities)
)
end
def render(
"status.json",
%{activity: %{data: %{"type" => "Announce", "object" => _object}} = activity} = opts
) do
user = get_user(activity.data["actor"])
created_at = Utils.to_masto_date(activity.data["published"])
activity_object = Object.normalize(activity)
reblogged_activity =
Activity.create_by_object_ap_id(activity_object.data["id"])
|> Activity.with_preloaded_bookmark(opts[:for])
|> Repo.one()
reblogged = render("status.json", Map.put(opts, :activity, reblogged_activity))
favorited = opts[:for] && opts[:for].ap_id in (activity_object.data["likes"] || [])
bookmarked = Activity.get_bookmark(reblogged_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("account.json", %{user: user}),
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_activity, opts[:for]),
favourited: present?(favorited),
bookmarked: present?(bookmarked),
muted: false,
pinned: pinned?(activity, user),
sensitive: false,
spoiler_text: "",
visibility: "public",
media_attachments: reblogged[:media_attachments] || [],
mentions: mentions,
tags: reblogged[:tags] || [],
application: %{
name: "Web",
website: nil
},
language: nil,
emojis: [],
pleroma: %{
local: activity.local
}
}
end
def render("status.json", %{activity: %{data: %{"object" => _object}} = activity} = opts) do
object = Object.normalize(activity)
user = get_user(activity.data["actor"])
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")
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)
favorited = opts[:for] && opts[:for].ap_id in (object.data["likes"] || [])
bookmarked = Activity.get_bookmark(activity, opts[:for]) != nil
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 && get_user(reply_to.data["actor"])
content =
object
|> render_content()
content_html =
content
|> HTML.get_cached_scrubbed_html_for_activity(
User.html_filter_policy(opts[:for]),
activity,
"mastoapi:content"
)
content_plaintext =
content
|> HTML.get_cached_stripped_html_for_activity(
activity,
"mastoapi:content"
)
summary = object.data["summary"] || ""
summary_html =
summary
|> HTML.get_cached_scrubbed_html_for_activity(
User.html_filter_policy(opts[:for]),
activity,
"mastoapi:summary"
)
summary_plaintext =
summary
|> HTML.get_cached_stripped_html_for_activity(
activity,
"mastoapi: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["external_url"] || object.data["id"]
end
%{
id: to_string(activity.id),
uri: object.data["id"],
url: url,
account: AccountView.render("account.json", %{user: user}),
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,
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: CommonAPI.thread_muted?(user, activity) || User.mutes?(opts[:for], user),
pinned: pinned?(activity, user),
sensitive: sensitive,
spoiler_text: summary_html,
visibility: get_visibility(object),
media_attachments: attachments,
poll: render("poll.json", %{object: object, for: opts[:for]}),
mentions: mentions,
tags: build_tags(tags),
application: %{
name: "Web",
website: nil
},
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_plaintext}
}
}
end
def render("status.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 rich_media[:url] != nil 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 rich_media[:image] != nil do
URI.merge(page_url_data, URI.parse(rich_media[:image]))
|> to_string
else
nil
end
site_name = rich_media[:site_name] || page_url_data.host
%{
type: "link",
provider_name: site_name,
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
end
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()
type =
cond do
String.contains?(media_type, "image") -> "image"
String.contains?(media_type, "video") -> "video"
String.contains?(media_type, "audio") -> "audio"
true -> "unknown"
end
<> = :crypto.hash(:md5, href)
%{
id: to_string(attachment["id"] || hash_id),
url: href,
remote_url: href,
preview_url: href,
text_url: href,
type: type,
description: attachment["name"],
pleroma: %{mime_type: media_type}
}
end
# TODO: Add tests for this view
def render("poll.json", %{object: object} = _opts) do
{multiple, options} =
case object.data do
%{"anyOf" => options} when is_list(options) -> {true, options}
%{"oneOf" => options} when is_list(options) -> {false, options}
_ -> {nil, nil}
end
if options do
end_time =
(object.data["closed"] || object.data["endTime"])
|> NaiveDateTime.from_iso8601!()
expired =
end_time
|> NaiveDateTime.compare(NaiveDateTime.utc_now())
|> case do
:lt -> true
_ -> false
end
{options, votes_count} =
Enum.map_reduce(options, 0, fn %{"name" => name} = option, count ->
current_count = option["replies"]["totalItems"] || 0
{%{
title: HTML.strip_tags(name),
votes_count: current_count
}, current_count + count}
end)
%{
# Mastodon uses separate ids for polls, but an object can't have
# more than one poll embedded so object id is fine
id: object.id,
expires_at: Utils.to_masto_date(end_time),
expired: expired,
multiple: multiple,
votes_count: votes_count,
options: options,
# TODO: Actually check for a vote
voted: false,
emojis: build_emojis(object.data["emoji"])
}
else
nil
end
end
def get_reply_to(activity, %{replied_to_activities: replied_to_activities}) do
object = Object.normalize(activity)
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)
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: %{"type" => "Video"}} = object) do
with name when not is_nil(name) and name != "" <- object.data["name"] do
"#{name}
#{object.data["content"]}"
else
_ -> object.data["content"] || ""
end
end
def render_content(%{data: %{"type" => object_type}} = object)
when object_type in ["Article", "Page"] do
with summary when not is_nil(summary) and summary != "" <- object.data["name"],
url when is_bitstring(url) <- object.data["url"] do
"#{summary}
#{object.data["content"]}"
else
_ -> object.data["content"] || ""
end
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 = for tag when is_binary(tag) <- object_tags, do: tag
Enum.reduce(object_tags, [], fn tag, tags ->
tags ++ [%{name: tag, url: "/tag/#{tag}"}]
end)
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{info: %{pinned_activities: pinned_activities}}),
do: id in pinned_activities
end