Claudio Ortolina
67 lines
1.8 KiB
Elixir
67 lines
1.8 KiB
Elixir
defmodule LastFm.Refresh do
|
|
use GenServer
|
|
|
|
require Logger
|
|
|
|
alias LastFm.{Config, Feed}
|
|
|
|
@type config :: Config.t()
|
|
|
|
@spec start_link(config) :: GenServer.on_start()
|
|
def start_link(config) do
|
|
GenServer.start_link(__MODULE__, config, name: __MODULE__)
|
|
end
|
|
|
|
@spec refresh() :: :ok
|
|
def refresh do
|
|
GenServer.call(__MODULE__, :refresh)
|
|
end
|
|
|
|
@impl true
|
|
@spec init(config) :: {:ok, config, {:continue, :refresh}} | :ignore
|
|
def init(config) do
|
|
if Config.enabled?(config) do
|
|
{:ok, config, {:continue, :refresh}}
|
|
else
|
|
:ignore
|
|
end
|
|
end
|
|
|
|
@impl true
|
|
@spec handle_call(:refresh, GenServer.from(), config) ::
|
|
{:reply, :ok | {:error, term()}, config, pos_integer()}
|
|
def handle_call(:refresh, _from, config) do
|
|
case config.api.get_recent_tracks(config) do
|
|
{:ok, tracks} ->
|
|
Feed.update(tracks)
|
|
{:reply, :ok, config, config.refresh_interval}
|
|
|
|
error ->
|
|
# TODO: think about failure scenario - error is logged at the API level
|
|
{:reply, error, config, config.refresh_interval}
|
|
end
|
|
end
|
|
|
|
@impl true
|
|
@spec handle_continue(atom(), config) :: {:noreply, config, pos_integer()}
|
|
def handle_continue(:refresh, config), do: refresh(config)
|
|
|
|
@impl true
|
|
@spec handle_info(atom(), config) :: {:noreply, config, pos_integer()}
|
|
def handle_info(:refresh, config), do: refresh(config)
|
|
|
|
def handle_info(:timeout, config), do: refresh(config)
|
|
|
|
defp refresh(config) do
|
|
case config.api.get_recent_tracks(config) do
|
|
{:ok, tracks} ->
|
|
Feed.update(tracks)
|
|
{:noreply, config, config.refresh_interval}
|
|
|
|
{:error, _reason} ->
|
|
# TODO: think about failure scenario - error is logged at the API level
|
|
{:noreply, config, config.refresh_interval}
|
|
end
|
|
end
|
|
end
|