qb_akkoma/lib/pleroma/web/chat_channel.ex

58 lines
1.6 KiB
Elixir
Raw Normal View History

# Pleroma: A lightweight social networking server
2020-03-03 22:44:49 +00:00
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
2017-12-04 18:10:15 +00:00
defmodule Pleroma.Web.ChatChannel do
use Phoenix.Channel
alias Pleroma.User
alias Pleroma.Web.ChatChannel.ChatChannelState
2017-12-04 18:10:15 +00:00
def join("chat:public", _message, socket) do
2017-12-05 08:36:26 +00:00
send(self(), :after_join)
2017-12-04 18:10:15 +00:00
{:ok, socket}
end
2017-12-05 08:36:26 +00:00
def handle_info(:after_join, socket) do
2018-03-30 13:01:53 +00:00
push(socket, "messages", %{messages: ChatChannelState.messages()})
2017-12-05 08:36:26 +00:00
{:noreply, socket}
end
def handle_in("new_msg", %{"text" => text}, %{assigns: %{user_name: user_name}} = socket) do
text = String.trim(text)
2018-03-30 13:01:53 +00:00
if String.length(text) in 1..Pleroma.Config.get([:instance, :chat_limit]) do
author = User.get_cached_by_nickname(user_name)
author = Pleroma.Web.MastodonAPI.AccountView.render("show.json", user: author)
message = ChatChannelState.add_message(%{text: text, author: author})
2018-03-30 13:01:53 +00:00
broadcast!(socket, "new_msg", message)
end
2018-03-30 13:01:53 +00:00
2017-12-04 18:10:15 +00:00
{:noreply, socket}
end
end
2017-12-05 08:36:26 +00:00
defmodule Pleroma.Web.ChatChannel.ChatChannelState do
2019-08-14 15:55:17 +00:00
use Agent
2017-12-05 08:36:26 +00:00
@max_messages 20
2019-08-14 15:55:17 +00:00
def start_link(_) do
2017-12-05 08:36:26 +00:00
Agent.start_link(fn -> %{max_id: 1, messages: []} end, name: __MODULE__)
end
def add_message(message) do
Agent.get_and_update(__MODULE__, fn state ->
id = state[:max_id] + 1
message = Map.put(message, "id", id)
messages = [message | state[:messages]] |> Enum.take(@max_messages)
{message, %{max_id: id, messages: messages}}
end)
end
def messages do
2018-03-30 13:01:53 +00:00
Agent.get(__MODULE__, fn state -> state[:messages] |> Enum.reverse() end)
2017-12-05 08:36:26 +00:00
end
end