akkoma/lib/pleroma/web/common_api/activity_draft.ex

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
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# 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
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alias Pleroma.Web.CommonAPI
alias Pleroma.Web.CommonAPI.Utils
import Pleroma.Web.Gettext
defstruct valid?: true,
errors: [],
user: nil,
params: %{},
status: nil,
summary: nil,
full_payload: nil,
attachments: [],
in_reply_to: nil,
in_reply_to_conversation: nil,
visibility: nil,
expires_at: nil,
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extra: nil,
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emoji: %{},
content_html: nil,
mentions: [],
tags: [],
to: [],
cc: [],
context: nil,
sensitive: false,
object: nil,
preview?: false,
changes: %{}
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def new(user, params) do
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%__MODULE__{user: user}
|> put_params(params)
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end
def create(user, params) do
user
|> new(params)
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|> status()
|> summary()
|> with_valid(&attachments/1)
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|> full_payload()
|> expires_at()
|> poll()
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|> with_valid(&in_reply_to/1)
|> with_valid(&in_reply_to_conversation/1)
|> with_valid(&visibility/1)
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|> content()
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|> with_valid(&to_and_cc/1)
|> with_valid(&context/1)
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|> sensitive()
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|> with_valid(&object/1)
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|> preview?()
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|> with_valid(&changes/1)
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|> validate()
end
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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])
|> 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
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defp put_params(draft, params) do
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params = Map.put_new(params, :in_reply_to_status_id, params[:in_reply_to_id])
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%__MODULE__{draft | params: params}
end
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defp status(%{params: %{status: status}} = draft) do
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%__MODULE__{draft | status: String.trim(status)}
end
defp summary(%{params: params} = draft) do
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%__MODULE__{draft | summary: Map.get(params, :spoiler_text, "")}
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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)
%__MODULE__{draft | attachments: attachments}
end
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defp in_reply_to(%{params: %{in_reply_to_status_id: ""}} = draft), do: draft
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defp in_reply_to(%{params: %{in_reply_to_status_id: id}} = draft) when is_binary(id) do
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%__MODULE__{draft | in_reply_to: Activity.get_by_id(id)}
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end
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defp in_reply_to(%{params: %{in_reply_to_status_id: %Activity{} = in_reply_to}} = draft) do
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%__MODULE__{draft | in_reply_to: in_reply_to}
end
defp in_reply_to(draft), do: draft
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defp in_reply_to_conversation(draft) do
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in_reply_to_conversation = Participation.get(draft.params[:in_reply_to_conversation_id])
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%__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 expires_at(draft) do
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case CommonAPI.check_expiry_date(draft.params[:expires_in]) do
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{: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}} ->
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%__MODULE__{draft | extra: poll, emoji: Map.merge(draft.emoji, poll_emoji)}
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{:error, message} ->
add_error(draft, message)
end
end
defp content(draft) do
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{content_html, mentioned_users, tags} = Utils.make_content_html(draft)
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mentions =
mentioned_users
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|> Enum.map(fn {_, mentioned_user} -> mentioned_user.ap_id end)
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|> Utils.get_addressed_users(draft.params[:to])
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%__MODULE__{draft | content_html: content_html, mentions: mentions, tags: tags}
end
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defp to_and_cc(draft) do
{to, cc} = Utils.get_to_and_cc(draft)
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%__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]
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%__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)
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object =
Builder.note(draft)
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|> Map.put("emoji", emoji)
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|> Map.put("source", draft.status)
|> Map.put("generator", draft.params[:generator])
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%__MODULE__{draft | object: object}
end
defp preview?(draft) do
preview? = Pleroma.Web.Utils.Params.truthy_param?(draft.params[:preview])
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%__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
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%DateTime{} = expires_at -> Map.put(additional, "expires_at", expires_at)
_ -> additional
end
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changes =
%{
to: draft.to,
actor: draft.user,
context: draft.context,
object: draft.object,
additional: additional
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}
|> Utils.maybe_add_list_data(draft.user, draft.visibility)
%__MODULE__{draft | changes: changes}
end
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defp with_valid(%{valid?: true} = draft, func), do: func.(draft)
defp with_valid(draft, _func), do: draft
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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