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|
defmodule Chessh.SSH.Client.TrongleChat do
require Logger
alias Chessh.{Player, Chat, Utils, Repo, PlayerSession}
import Ecto.Query
@colors [
IO.ANSI.light_blue(),
IO.ANSI.light_red(),
IO.ANSI.green(),
IO.ANSI.light_magenta(),
IO.ANSI.cyan(),
IO.ANSI.blue(),
IO.ANSI.yellow()
]
defmodule State do
defstruct client_pid: nil,
message: "",
player_session: nil,
width: 0,
height: 0,
chats: []
end
use Chessh.SSH.Client.Screen
def handle_info(
{:new_chat, %Chat{} = chat},
%State{width: width, height: height, chats: chats} = state
) do
new_state = %State{
state
| chats: [chat | chats]
}
{:noreply, render(width, height, new_state)}
end
def init([
%State{
client_pid: client_pid,
player_session: %PlayerSession{player_id: player_id} = player_session
} = state
]) do
:syn.add_node_to_scopes([:chat])
:ok = :syn.join(:chat, {:tronglechat}, self())
send(client_pid, {:send_to_ssh, Utils.clear_codes()})
{:ok,
%State{
state
| chats: get_initial_chats(),
player_session: %PlayerSession{player_session | player: Repo.get!(Player, player_id)}
}}
end
def render(
width,
height,
%State{
client_pid: client_pid,
chats: chats,
message: message,
player_session: %PlayerSession{player: %Player{username: username}}
} = state
) do
chat_msgs =
chats
|> Enum.slice(0, height - 1)
|> Enum.map(&format_chat/1)
|> Enum.join("\r\n")
{prompt, prompt_len} = format_prompt(username, message)
send(
client_pid,
{:send_to_ssh,
[
Utils.clear_codes(),
prompt <>
"\r\n" <> chat_msgs <> IO.ANSI.cursor(0, prompt_len + 1)
]}
)
%State{state | width: width, height: height}
end
def input(
action,
data,
%State{
player_session: %PlayerSession{player: player},
message: message,
width: width,
height: height
} = state
) do
safe_char_regex = ~r/[ A-Za-z0-9._~()'!*:@,;+?-]/
appended_message_state =
case action do
:backspace ->
%State{state | message: String.slice(message, 0..-2)}
:return ->
if message != "" do
{:ok, saved_chat} = Repo.insert(%Chat{message: message, chatter: player})
:syn.publish(:chat, {:tronglechat}, {:new_chat, saved_chat})
%State{state | message: ""}
else
state
end
_ ->
if String.match?(data, safe_char_regex) do
%State{state | message: message <> data}
else
state
end
end
render(width, height, appended_message_state)
end
defp get_initial_chats() do
from(c in Chat,
order_by: [desc: c.id],
limit: 100
)
|> Repo.all()
|> Repo.preload([:chatter])
end
defp username_color(username, colors \\ @colors) do
ind =
String.to_charlist(username)
|> Enum.sum()
|> rem(length(colors))
Enum.at(colors, ind)
end
defp format_prompt(username, message) do
{
[
IO.ANSI.format_fragment([username_color(username), username, IO.ANSI.default_color()]),
"> ",
message
]
|> Enum.join(""),
String.length(username) + String.length(message) + 2
}
end
defp format_chat(%Chat{chatter: %Player{username: username}, message: message}) do
{prompt, _} = format_prompt(username, message)
prompt
end
end
|
