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|
defmodule Chessh.SSH.Client do
alias IO.ANSI
alias Chessh.SSH.Client.Menu
require Logger
use GenServer
@clear_codes [
ANSI.clear(),
ANSI.reset(),
ANSI.home()
]
@max_terminal_width 255
@max_terminal_height 127
@terminal_bad_dim_msg [
@clear_codes | "The dimensions of your terminal are not within in the valid range"
]
defmodule State do
defstruct tui_pid: nil,
width: 0,
height: 0,
player_session: nil,
screen_processes: []
end
@impl true
def init([%State{tui_pid: tui_pid} = state]) do
{:ok, screen_pid} =
GenServer.start_link(Chessh.SSH.Client.Menu, [
%Chessh.SSH.Client.Menu.State{tui_pid: tui_pid}
])
{:ok, %{state | screen_processes: [screen_pid]}}
end
@impl true
def handle_info(:quit, %State{} = state) do
{:stop, :normal, state}
end
@impl true
def handle_info(msg, state) do
[burst_ms, burst_rate] =
Application.get_env(:chessh, RateLimits)
|> Keyword.take([:player_session_message_burst_ms, :player_session_message_burst_rate])
|> Keyword.values()
case Hammer.check_rate_inc(
"player-session-#{state.player_session.id}-burst-message-rate",
burst_ms,
burst_rate,
1
) do
{:allow, _count} ->
handle(msg, state)
{:deny, _limit} ->
{:noreply, state}
end
end
def handle(
{:data, data},
%State{width: width, height: height, screen_processes: [screen_pid | _]} = state
) do
action = keymap(data)
if action == :quit do
{:stop, :normal, state}
else
send(screen_pid, {:input, width, height, action})
{:noreply, state}
end
end
# def handle(
# {:refresh, },
# %State{screen_processes: [screen_pid | _] = screen_processes, width: width, height: height} = state
# ) do
# send(screen_pid, {:render, tui_pid, width, height})
# {:noreply, state}
# end
def handle(
{:resize, {width, height}},
%State{tui_pid: tui_pid, screen_processes: [screen_pid | _]} = state
) do
new_state = %State{state | width: width, height: height}
if height <= @max_terminal_height && width <= @max_terminal_width do
send(screen_pid, {:render, width, height})
else
send(tui_pid, {:send_data, @terminal_bad_dim_msg})
end
{:noreply, new_state}
end
def keymap(key) do
case key do
# Exit keys - C-c and C-d
<<3>> -> :quit
<<4>> -> :quit
# Arrow keys
"\e[A" -> :up
"\e[B" -> :down
"\e[D" -> :left
"\e[C" -> :right
"\r" -> :return
x -> x
end
end
end
|
