defmodule Tz.UpdatePeriodically do
use GenServer
require Logger
alias Tz.HTTP
alias Tz.Updater
defp maybe_recompile() do
Logger.debug("Tz is checking for IANA time zone database updates")
Updater.maybe_recompile()
end
def start_link(opts) do
HTTP.get_http_client!()
GenServer.start_link(__MODULE__, opts)
end
def init(opts) do
maybe_recompile()
schedule_work(opts[:interval_in_days])
{:ok, %{opts: opts}}
end
def handle_info(:work, %{opts: opts}) do
maybe_recompile()
schedule_work(opts[:interval_in_days])
{:noreply, %{opts: opts}}
end
defp schedule_work(interval_in_days) do
interval_in_days = interval_in_days || 1
Process.send_after(self(), :work, interval_in_days * 24 * 60 * 60 * 1000)
end
end