spc-pleroma/lib/pleroma/web/common_api/activity_draft.ex

333 lines
9.5 KiB
Elixir

# Pleroma: A lightweight social networking server
# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.CommonAPI.ActivityDraft do
alias Pleroma.Activity
alias Pleroma.Conversation.Participation
alias Pleroma.Object
alias Pleroma.Web.ActivityPub.Builder
alias Pleroma.Web.ActivityPub.Visibility
alias Pleroma.Web.CommonAPI
alias Pleroma.Web.CommonAPI.Utils
import Pleroma.Web.Gettext
import Pleroma.Web.Utils.Guards, only: [not_empty_string: 1]
@type t :: %__MODULE__{}
defstruct valid?: true,
errors: [],
user: nil,
params: %{},
status: nil,
summary: nil,
full_payload: nil,
attachments: [],
in_reply_to: nil,
in_reply_to_conversation: nil,
quote_post: nil,
visibility: nil,
expires_at: nil,
extra: nil,
emoji: %{},
content_html: nil,
mentions: [],
tags: [],
to: [],
cc: [],
context: nil,
sensitive: false,
object: nil,
preview?: false,
changes: %{}
def new(user, params) do
%__MODULE__{user: user}
|> put_params(params)
end
def create(user, params) do
user
|> new(params)
|> status()
|> summary()
|> with_valid(&attachments/1)
|> full_payload()
|> expires_at()
|> poll()
|> with_valid(&in_reply_to/1)
|> with_valid(&in_reply_to_conversation/1)
|> with_valid(&quote_post/1)
|> with_valid(&visibility/1)
|> with_valid(&quoting_visibility/1)
|> content()
|> with_valid(&to_and_cc/1)
|> with_valid(&context/1)
|> sensitive()
|> with_valid(&object/1)
|> preview?()
|> with_valid(&changes/1)
|> validate()
end
def listen(user, params) do
user
|> new(params)
|> visibility()
|> to_and_cc()
|> context()
|> listen_object()
|> with_valid(&changes/1)
|> validate()
end
defp listen_object(draft) do
object =
draft.params
|> Map.take([:album, :artist, :title, :length, :externalLink])
|> Map.new(fn {key, value} -> {to_string(key), value} end)
|> Map.put("type", "Audio")
|> Map.put("to", draft.to)
|> Map.put("cc", draft.cc)
|> Map.put("actor", draft.user.ap_id)
%__MODULE__{draft | object: object}
end
defp put_params(draft, params) do
params = Map.put_new(params, :in_reply_to_status_id, params[:in_reply_to_id])
%__MODULE__{draft | params: params}
end
defp status(%{params: %{status: status}} = draft) do
%__MODULE__{draft | status: String.trim(status)}
end
defp summary(%{params: params} = draft) do
%__MODULE__{draft | summary: Map.get(params, :spoiler_text, "")}
end
defp full_payload(%{status: status, summary: summary} = draft) do
full_payload = String.trim(status <> summary)
case Utils.validate_character_limit(full_payload, draft.attachments) do
:ok -> %__MODULE__{draft | full_payload: full_payload}
{:error, message} -> add_error(draft, message)
end
end
defp attachments(%{params: params} = draft) do
attachments = Utils.attachments_from_ids(params, draft.user)
draft = %__MODULE__{draft | attachments: attachments}
case Utils.validate_attachments_count(attachments) do
:ok -> draft
{:error, message} -> add_error(draft, message)
end
end
defp in_reply_to(%{params: %{in_reply_to_status_id: ""}} = draft), do: draft
defp in_reply_to(%{params: %{in_reply_to_status_id: :deleted}} = draft) do
add_error(draft, dgettext("errors", "Cannot reply to a deleted status"))
end
defp in_reply_to(%{params: %{in_reply_to_status_id: id} = params} = draft) when is_binary(id) do
activity = Activity.get_by_id(id)
params =
if is_nil(activity) do
# Deleted activities are returned as nil
Map.put(params, :in_reply_to_status_id, :deleted)
else
Map.put(params, :in_reply_to_status_id, activity)
end
in_reply_to(%{draft | params: params})
end
defp in_reply_to(%{params: %{in_reply_to_status_id: %Activity{} = in_reply_to}} = draft) do
%__MODULE__{draft | in_reply_to: in_reply_to}
end
defp in_reply_to(draft), do: draft
defp quote_post(%{params: %{quote_id: id}} = draft) when not_empty_string(id) do
case Activity.get_by_id_with_object(id) do
%Activity{} = activity ->
%__MODULE__{draft | quote_post: activity}
_ ->
draft
end
end
defp quote_post(draft), do: draft
defp in_reply_to_conversation(draft) do
in_reply_to_conversation = Participation.get(draft.params[:in_reply_to_conversation_id])
%__MODULE__{draft | in_reply_to_conversation: in_reply_to_conversation}
end
defp visibility(%{params: params} = draft) do
case CommonAPI.get_visibility(params, draft.in_reply_to, draft.in_reply_to_conversation) do
{visibility, "direct"} when visibility != "direct" ->
add_error(draft, dgettext("errors", "The message visibility must be direct"))
{visibility, _} ->
%__MODULE__{draft | visibility: visibility}
end
end
defp can_quote?(_draft, _object, visibility) when visibility in ~w(public unlisted local) do
true
end
defp can_quote?(draft, object, "private") do
draft.user.ap_id == object.data["actor"]
end
defp can_quote?(_, _, _) do
false
end
defp quoting_visibility(%{quote_post: %Activity{}} = draft) do
with %Object{} = object <- Object.normalize(draft.quote_post, fetch: false),
true <- can_quote?(draft, object, Visibility.get_visibility(object)) do
draft
else
_ -> add_error(draft, dgettext("errors", "Cannot quote private message"))
end
end
defp quoting_visibility(draft), do: draft
defp expires_at(draft) do
case CommonAPI.check_expiry_date(draft.params[:expires_in]) do
{:ok, expires_at} -> %__MODULE__{draft | expires_at: expires_at}
{:error, message} -> add_error(draft, message)
end
end
defp poll(draft) do
case Utils.make_poll_data(draft.params) do
{:ok, {poll, poll_emoji}} ->
%__MODULE__{draft | extra: poll, emoji: Map.merge(draft.emoji, poll_emoji)}
{:error, message} ->
add_error(draft, message)
end
end
defp content(%{mentions: mentions} = draft) do
{content_html, mentioned_users, tags} = Utils.make_content_html(draft)
mentioned_ap_ids =
Enum.map(mentioned_users, fn {_, mentioned_user} -> mentioned_user.ap_id end)
mentions =
mentions
|> Kernel.++(mentioned_ap_ids)
|> Utils.get_addressed_users(draft.params[:to])
%__MODULE__{draft | content_html: content_html, mentions: mentions, tags: tags}
end
defp to_and_cc(draft) do
{to, cc} = Utils.get_to_and_cc(draft)
%__MODULE__{draft | to: to, cc: cc}
end
defp context(draft) do
context = Utils.make_context(draft.in_reply_to, draft.in_reply_to_conversation)
%__MODULE__{draft | context: context}
end
defp sensitive(draft) do
sensitive = draft.params[:sensitive]
%__MODULE__{draft | sensitive: sensitive}
end
defp object(draft) do
emoji = Map.merge(Pleroma.Emoji.Formatter.get_emoji_map(draft.full_payload), draft.emoji)
# Sometimes people create posts with subject containing emoji,
# since subjects are usually copied this will result in a broken
# subject when someone replies from an instance that does not have
# the emoji or has it under different shortcode. This is an attempt
# to mitigate this by copying emoji from inReplyTo if they are present
# in the subject.
summary_emoji =
with %Activity{} <- draft.in_reply_to,
%Object{data: %{"tag" => [_ | _] = tag}} <- Object.normalize(draft.in_reply_to) do
Enum.reduce(tag, %{}, fn
%{"type" => "Emoji", "name" => name, "icon" => %{"url" => url}}, acc ->
if String.contains?(draft.summary, name) do
Map.put(acc, name, url)
else
acc
end
_, acc ->
acc
end)
else
_ -> %{}
end
emoji = Map.merge(emoji, summary_emoji)
{:ok, note_data, _meta} = Builder.note(draft)
object =
note_data
|> Map.put("emoji", emoji)
|> Map.put("source", %{
"content" => draft.status,
"mediaType" => Utils.get_content_type(draft.params[:content_type])
})
|> Map.put("generator", draft.params[:generator])
%__MODULE__{draft | object: object}
end
defp preview?(draft) do
preview? = Pleroma.Web.Utils.Params.truthy_param?(draft.params[:preview])
%__MODULE__{draft | preview?: preview?}
end
defp changes(draft) do
direct? = draft.visibility == "direct"
additional = %{"cc" => draft.cc, "directMessage" => direct?}
additional =
case draft.expires_at do
%DateTime{} = expires_at -> Map.put(additional, "expires_at", expires_at)
_ -> additional
end
changes =
%{
to: draft.to,
actor: draft.user,
context: draft.context,
object: draft.object,
additional: additional
}
|> Utils.maybe_add_list_data(draft.user, draft.visibility)
%__MODULE__{draft | changes: changes}
end
defp with_valid(%{valid?: true} = draft, func), do: func.(draft)
defp with_valid(draft, _func), do: draft
defp add_error(draft, message) do
%__MODULE__{draft | valid?: false, errors: [message | draft.errors]}
end
defp validate(%{valid?: true} = draft), do: {:ok, draft}
defp validate(%{errors: [message | _]}), do: {:error, message}
end