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