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chat_controller.ex
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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.PleromaAPI.ChatController do
use Pleroma.Web, :controller
import Pleroma.Web.ControllerHelper, only: [add_link_headers: 2]
alias Pleroma.Activity
alias Pleroma.Chat
alias Pleroma.Chat.MessageReference
alias Pleroma.Object
alias Pleroma.Pagination
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Web.CommonAPI
alias Pleroma.Web.PleromaAPI.Chat.MessageReferenceView
alias Pleroma.Web.Plugs.OAuthScopesPlug
import Ecto.Query
action_fallback(Pleroma.Web.MastodonAPI.FallbackController)
plug(
OAuthScopesPlug,
%{scopes: ["write:chats"]}
when action in [
:post_chat_message,
:create,
:mark_as_read,
:mark_message_as_read,
:delete_message
]
)
plug(
OAuthScopesPlug,
%{scopes: ["read:chats"]} when action in [:messages, :index, :show]
)
plug(OpenApiSpex.Plug.CastAndValidate, render_error: Pleroma.Web.ApiSpec.RenderError)
defdelegate open_api_operation(action), to: Pleroma.Web.ApiSpec.ChatOperation
def delete_message(%{assigns: %{user: %{id: user_id} = user}} = conn, %{
message_id: message_id,
id: chat_id
}) do
with %MessageReference{} = cm_ref <-
MessageReference.get_by_id(message_id),
^chat_id <- to_string(cm_ref.chat_id),
%Chat{user_id: ^user_id} <- Chat.get_by_id(chat_id),
{:ok, _} <- remove_or_delete(cm_ref, user) do
conn
|> put_view(MessageReferenceView)
|> render("show.json", chat_message_reference: cm_ref)
else
_e ->
{:error, :could_not_delete}
end
end
defp remove_or_delete(
%{object: %{data: %{"actor" => actor, "id" => id}}},
%{ap_id: actor} = user
) do
with %Activity{} = activity <- Activity.get_create_by_object_ap_id(id) do
CommonAPI.delete(activity.id, user)
end
end
defp remove_or_delete(cm_ref, _), do: MessageReference.delete(cm_ref)
def post_chat_message(
%{body_params: params, assigns: %{user: user}} = conn,
%{id: id}
) do
with {:ok, chat} <- Chat.get_by_user_and_id(user, id),
%User{} = recipient <- User.get_cached_by_ap_id(chat.recipient),
{:ok, activity} <-
CommonAPI.post_chat_message(user, recipient, params[:content],
media_id: params[:media_id],
idempotency_key: idempotency_key(conn)
),
message <- Object.normalize(activity, false),
cm_ref <- MessageReference.for_chat_and_object(chat, message) do
conn
|> put_view(MessageReferenceView)
|> render("show.json", chat_message_reference: cm_ref)
else
{:reject, message} ->
conn
|> put_status(:unprocessable_entity)
|> json(%{error: message})
{:error, message} ->
conn
|> put_status(:bad_request)
|> json(%{error: message})
end
end
def mark_message_as_read(
%{assigns: %{user: %{id: user_id}}} = conn,
%{id: chat_id, message_id: message_id}
) do
with %MessageReference{} = cm_ref <- MessageReference.get_by_id(message_id),
^chat_id <- to_string(cm_ref.chat_id),
%Chat{user_id: ^user_id} <- Chat.get_by_id(chat_id),
{:ok, cm_ref} <- MessageReference.mark_as_read(cm_ref) do
conn
|> put_view(MessageReferenceView)
|> render("show.json", chat_message_reference: cm_ref)
end
end
def mark_as_read(
%{body_params: %{last_read_id: last_read_id}, assigns: %{user: user}} = conn,
%{id: id}
) do
with {:ok, chat} <- Chat.get_by_user_and_id(user, id),
{_n, _} <- MessageReference.set_all_seen_for_chat(chat, last_read_id) do
render(conn, "show.json", chat: chat)
end
end
def messages(%{assigns: %{user: user}} = conn, %{id: id} = params) do
with {:ok, chat} <- Chat.get_by_user_and_id(user, id) do
chat_message_refs =
chat
|> MessageReference.for_chat_query()
|> Pagination.fetch_paginated(params)
conn
|> add_link_headers(chat_message_refs)
|> put_view(MessageReferenceView)
|> render("index.json", chat_message_references: chat_message_refs)
end
end
def index(%{assigns: %{user: %{id: user_id} = user}} = conn, params) do
exclude_users =
User.cached_blocked_users_ap_ids(user) ++
if params[:with_muted], do: [], else: User.cached_muted_users_ap_ids(user)
chats =
user_id
|> Chat.for_user_query()
|> where([c], c.recipient not in ^exclude_users)
|> Repo.all()
render(conn, "index.json", chats: chats)
end
def create(%{assigns: %{user: user}} = conn, %{id: id}) do
with %User{ap_id: recipient} <- User.get_cached_by_id(id),
{:ok, %Chat{} = chat} <- Chat.get_or_create(user.id, recipient) do
render(conn, "show.json", chat: chat)
end
end
def show(%{assigns: %{user: user}} = conn, %{id: id}) do
with {:ok, chat} <- Chat.get_by_user_and_id(user, id) do
render(conn, "show.json", chat: chat)
end
end
defp idempotency_key(conn) do
case get_req_header(conn, "idempotency-key") do
[key] -> key
_ -> nil
end
end
end

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