Claudio Ortolina
115 lines
3.6 KiB
Elixir
115 lines
3.6 KiB
Elixir
defmodule LastFm do
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@moduledoc """
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Last.fm API facade for scrobbling and listening history.
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"""
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alias LastFm.{API, Feed, Refresh, Scrobble, Track, Worker}
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alias MusicLibrary.{BackgroundRepo, Repo}
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@spec subscribe_to_feed() :: :ok
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def subscribe_to_feed, do: Feed.subscribe()
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@spec refresh_scrobbled_tracks() :: :ok | {:error, term()}
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def refresh_scrobbled_tracks, do: Refresh.refresh()
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@spec get_tracks(keyword()) :: {:ok, [Track.t()]} | {:error, term()}
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def get_tracks(opts) do
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last_fm_config = last_fm_config()
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API.get_recent_tracks(opts, last_fm_config)
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end
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@spec lowest_scrobbled_at_uts() :: integer() | nil
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def lowest_scrobbled_at_uts do
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Repo.aggregate(Track, :min, :scrobbled_at_uts)
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end
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@spec backfill_scrobbled_tracks() :: {:ok, Oban.Job.t()} | {:error, Ecto.Changeset.t()}
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def backfill_scrobbled_tracks do
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to_uts = lowest_scrobbled_at_uts()
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%{"to_uts" => to_uts}
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|> Worker.BackfillScrobbledTracks.new()
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|> BackgroundRepo.insert()
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end
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@spec get_artist_info(String.t(), String.t()) :: {:ok, LastFm.Artist.t()} | {:error, term()}
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def get_artist_info(musicbrainz_id, name) do
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last_fm_config = last_fm_config()
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case API.get_artist_info({:musicbrainz_id, musicbrainz_id}, last_fm_config) do
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{:ok, info} ->
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{:ok, info}
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{:error, :invalid_parameters} ->
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# Sometimes the artist info cannot be identified with the MusicBrainz ID,
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# because Last.fm doesn't have that information. In that case, we try again with the artist name.
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API.get_artist_info({:name, name}, last_fm_config)
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error ->
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error
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end
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end
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@spec get_similar_artists(String.t(), String.t()) ::
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{:ok, [LastFm.Artist.t()]} | {:error, term()}
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def get_similar_artists(musicbrainz_id, name) do
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last_fm_config = last_fm_config()
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case API.get_similar_artists({:musicbrainz_id, musicbrainz_id}, last_fm_config) do
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{:ok, info} ->
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{:ok, info}
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{:error, :invalid_parameters} ->
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# Sometimes the artist info cannot be identified with the MusicBrainz ID,
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# because Last.fm doesn't have that information. In that case, we try again with the artist name.
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API.get_similar_artists({:name, name}, last_fm_config)
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error ->
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error
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end
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end
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@spec get_artist_tags(String.t(), String.t()) ::
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{:ok, [{String.t(), integer()}]} | {:error, term()}
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def get_artist_tags(musicbrainz_id, name) do
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last_fm_config = last_fm_config()
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case API.get_artist_tags({:musicbrainz_id, musicbrainz_id}, last_fm_config) do
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{:ok, tags} ->
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{:ok, tags}
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{:error, :invalid_parameters} ->
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# Sometimes the artist cannot be identified with the MusicBrainz ID,
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# because Last.fm doesn't have that information. In that case, we try again with the artist name.
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API.get_artist_tags({:name, name}, last_fm_config)
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error ->
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error
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end
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end
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@spec get_session(String.t()) :: {:ok, LastFm.Session.t()} | {:error, term()}
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def get_session(token) do
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last_fm_config = last_fm_config()
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API.get_session(token, last_fm_config)
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end
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@spec scrobble([Scrobble.t()], String.t()) :: {:ok, map()} | {:error, term()}
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def scrobble(scrobbles, session_key) do
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last_fm_config = last_fm_config()
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scrobbles
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|> Enum.map(&Scrobble.encode/1)
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|> API.scrobble(session_key, last_fm_config)
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end
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@spec auth_url() :: String.t()
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def auth_url do
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last_fm_config = last_fm_config()
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"https://www.last.fm/api/auth/?api_key=" <> last_fm_config.api_key
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end
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defp last_fm_config, do: LastFm.Config.resolve(:music_library)
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end
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