117 lines
2.7 KiB
Elixir
117 lines
2.7 KiB
Elixir
defmodule RanchTalk.TalkTimer do
|
|
use Kino.JS
|
|
use Kino.JS.Live
|
|
|
|
require Logger
|
|
|
|
defmodule Opts do
|
|
@ten_minutes_in_seconds 60 * 10
|
|
|
|
defstruct done_message: "Timer finished!",
|
|
seconds_to_count: @ten_minutes_in_seconds
|
|
end
|
|
|
|
@default_opts %{
|
|
done_message: "Timer finished!",
|
|
seconds_to_count: 600
|
|
}
|
|
|
|
@spec new(opts :: Opts.t()) :: Kino.JS.Live.t()
|
|
def new(opts) do
|
|
state =
|
|
@default_opts
|
|
|> Map.merge(opts)
|
|
|> update_state_html()
|
|
|
|
Kino.JS.Live.new(__MODULE__, state)
|
|
end
|
|
|
|
def set_html(widget, html) do
|
|
Kino.JS.Live.cast(widget, {:set_html, html})
|
|
end
|
|
|
|
def get_state(widget) do
|
|
Kino.JS.Live.call(widget, :get_state)
|
|
end
|
|
|
|
@impl true
|
|
def init(state, ctx) do
|
|
{:ok, assign(ctx, state)}
|
|
end
|
|
|
|
def tick(widget) do
|
|
state = get_state(widget)
|
|
tick(widget, state)
|
|
end
|
|
|
|
def tick(widget, %{seconds_to_count: seconds_to_count} = state) do
|
|
new_state =
|
|
state
|
|
|> Map.put(:seconds_to_count, seconds_to_count - 1)
|
|
|> update_state_html()
|
|
|
|
set_html(widget, state.html)
|
|
|
|
if seconds_to_count < 1 do
|
|
Kino.JS.Live.cast(widget, :timer_finished)
|
|
else
|
|
Process.sleep(1000)
|
|
tick(widget, new_state)
|
|
end
|
|
end
|
|
|
|
@impl true
|
|
def handle_connect(ctx) do
|
|
{:ok, ctx.assigns, ctx}
|
|
end
|
|
|
|
@impl true
|
|
def handle_cast({:set_html, html}, ctx) do
|
|
broadcast_event(ctx, "set_html", html)
|
|
{:noreply, assign(ctx, html: html)}
|
|
end
|
|
|
|
@impl true
|
|
def handle_cast(:timer_finished, ctx) do
|
|
broadcast_event(ctx, "timer_finished", ctx.assigns.done_message)
|
|
{:noreply, ctx}
|
|
end
|
|
|
|
@impl true
|
|
def handle_call(:get_state, _from, ctx) do
|
|
{:reply, ctx.assigns, ctx}
|
|
end
|
|
|
|
def start(widget) do
|
|
spawn(fn -> tick(widget) end)
|
|
widget
|
|
end
|
|
|
|
defp update_state_html(%{seconds_to_count: seconds} = state) do
|
|
minutes = seconds |> div(60) |> double_digit()
|
|
seconds = seconds |> rem(60) |> double_digit()
|
|
Map.put(state, :html, Enum.join([minutes, ":", seconds]))
|
|
end
|
|
|
|
defp double_digit(n), do: n |> to_string |> String.pad_leading(2, "0")
|
|
|
|
asset "main.js" do
|
|
"""
|
|
export function init(ctx, state) {
|
|
const display = document.createElement("div")
|
|
display.style.textAlign = 'center'
|
|
display.style.fontFamily = 'IosevkaLyte, monospace'
|
|
display.style.fontSize = '60px'
|
|
display.style.margin = '0 auto'
|
|
display.style.borderBottom = 'solid 8px rgba(0, 0, 0, 0.25)'
|
|
display.textContent = state.html
|
|
ctx.root.style.display = 'flex'
|
|
ctx.root.appendChild(display)
|
|
|
|
ctx.handleEvent("set_html", html => display.textContent = html)
|
|
ctx.handleEvent("timer_finished", message => alert(message))
|
|
}
|
|
"""
|
|
end
|
|
end
|