Claudio Ortolina
381 lines
12 KiB
Elixir
381 lines
12 KiB
Elixir
defmodule MusicLibrary.ScrobbleActivity do
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import Ecto.Query
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alias LastFm.{Scrobble, Track}
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alias MusicBrainz.Release
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alias MusicLibrary.{Artists, Collection, Repo, Secrets, Wishlist}
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def can_scrobble? do
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Secrets.get("last_fm_session_key") !== nil
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end
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def scrobble_release(release_with_tracks, opts) when is_list(opts) do
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case Enum.sort(opts) do
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[finished_at: _, started_at: _] ->
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raise ArgumentError, """
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Cannot scobble a release with both started_at and finished_at.
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Remove either of them.
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"""
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[started_at: started_at] ->
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scrobble_release(release_with_tracks, {:started_at, started_at})
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[finished_at: finished_at] ->
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scrobble_release(release_with_tracks, {:finished_at, finished_at})
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end
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end
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def scrobble_release(release_with_tracks, {:finished_at, finished_at}) do
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release_duration = Release.release_duration(release_with_tracks)
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started_at = DateTime.add(finished_at, -release_duration, :millisecond)
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scrobble_release(release_with_tracks, {:started_at, started_at})
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end
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def scrobble_release(release_with_tracks, {:started_at, started_at}) do
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session_key = Secrets.get!("last_fm_session_key").value
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{scrobbles, _finished_at} =
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release_with_tracks
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|> MusicBrainz.Release.tracks()
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|> to_scrobbles(release_with_tracks, started_at)
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LastFm.scrobble(scrobbles, session_key)
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end
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def scrobble_medium(number, release_with_tracks, opts) when is_list(opts) do
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case Enum.sort(opts) do
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[finished_at: _, started_at: _] ->
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raise ArgumentError, """
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Cannot scobble a medium with both started_at and finished_at.
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Remove either of them.
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"""
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[started_at: started_at] ->
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scrobble_medium(number, release_with_tracks, {:started_at, started_at})
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[finished_at: finished_at] ->
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scrobble_medium(number, release_with_tracks, {:finished_at, finished_at})
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end
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end
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def scrobble_medium(number, release_with_tracks, {:finished_at, finished_at}) do
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medium_duration =
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release_with_tracks.media
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|> Enum.find(fn medium -> medium.number == number end)
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|> Release.medium_duration()
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started_at = DateTime.add(finished_at, -medium_duration, :millisecond)
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scrobble_medium(number, release_with_tracks, {:started_at, started_at})
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end
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def scrobble_medium(number, release_with_tracks, {:started_at, started_at}) do
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session_key = Secrets.get!("last_fm_session_key").value
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medium =
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release_with_tracks.media
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|> Enum.find(fn medium -> medium.number == number end)
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{scrobbles, _finished_at} =
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medium.tracks
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|> to_scrobbles(release_with_tracks, started_at)
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LastFm.scrobble(scrobbles, session_key)
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end
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defp to_scrobbles(tracks, release_with_tracks, started_at) do
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tracks
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|> Enum.map_reduce(started_at, fn track, time ->
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album_artist =
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if release_with_tracks.artists !== track.artists do
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main_artist_name(release_with_tracks.artists)
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end
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time = time |> DateTime.add(track.length, :millisecond)
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scrobble = %Scrobble{
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artist: main_artist_name(track.artists),
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album: release_with_tracks.title,
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album_artist: album_artist,
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track: track.title,
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timestamp: DateTime.to_unix(time)
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}
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{scrobble, time}
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end)
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end
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defp main_artist_name([]), do: nil
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defp main_artist_name([artist | _rest]), do: artist.name
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def from_recent_tracks(recent_tracks, timezone) do
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all_artist_pairs = Artists.get_all_artist_pairs()
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recent_release_ids = recent_release_ids(recent_tracks)
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collected_releases = Collection.collected_releases(recent_release_ids)
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wishlisted_releases = Wishlist.wishlisted_releases(recent_release_ids)
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localized_recent_tracks =
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Enum.map(recent_tracks, fn t ->
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%{
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t
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| scrobbled_at_label: localize_scrobbled_at(t.scrobbled_at_uts, timezone),
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artist: polyfill_artist(t, collected_releases, wishlisted_releases, all_artist_pairs)
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}
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end)
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all_artist_ids = Artists.get_all_artist_ids()
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recent_artist_ids = recent_artist_ids(localized_recent_tracks)
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artist_ids = MapSet.intersection(all_artist_ids, recent_artist_ids)
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recent_albums =
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localized_recent_tracks
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|> Enum.dedup_by(fn t -> t.album end)
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|> Enum.map(fn t ->
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%{
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scrobbled_at_uts: t.scrobbled_at_uts,
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scrobbled_at_label: t.scrobbled_at_label,
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metadata: t.album,
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artist: t.artist,
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cover_url: t.cover_url
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}
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end)
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%{
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localized_recent_tracks: localized_recent_tracks,
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localized_recent_albums: recent_albums,
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collected_releases: collected_releases,
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wishlisted_releases: wishlisted_releases,
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artist_ids: artist_ids
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}
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end
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defp polyfill_artist(track, collected_releases, wishlisted_releases, all_artist_pairs) do
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%{
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track.artist
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| musicbrainz_id:
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find_artist_id(track, collected_releases, wishlisted_releases, all_artist_pairs)
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}
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end
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defguardp has_no_artist_id(track)
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when is_nil(track.artist.musicbrainz_id) or track.artist.musicbrainz_id == ""
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defp find_artist_id(track, collected_releases, wishlisted_releases, all_artist_pairs)
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when has_no_artist_id(track) do
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matched_release =
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Enum.find(collected_releases ++ wishlisted_releases, fn r ->
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r.release_id == track.album.musicbrainz_id
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end)
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record_id = if matched_release, do: matched_release.record_id
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if record_id do
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Enum.find_value(all_artist_pairs, fn pair ->
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if pair.record_id == record_id, do: pair.artist_id
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end)
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end
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end
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defp find_artist_id(track, _collected_releases, _wishlisted_releases, _all_artist_pairs) do
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track.artist.musicbrainz_id
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end
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def localize_scrobbled_at(uts, timezone) do
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ldt =
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uts
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|> DateTime.from_unix!()
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|> DateTime.shift_zone!(timezone)
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Calendar.strftime(ldt, "%d/%m/%Y %X")
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end
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defp recent_release_ids(recent_tracks) do
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recent_tracks
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|> Enum.map(fn t -> t.album.musicbrainz_id end)
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|> Enum.uniq()
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|> Enum.reject(fn musicbrainz_id -> musicbrainz_id == "" end)
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end
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defp recent_artist_ids(recent_tracks) do
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recent_tracks
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|> Enum.map(fn t -> t.artist.musicbrainz_id end)
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|> Enum.uniq()
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|> Enum.reject(fn musicbrainz_id -> musicbrainz_id == "" end)
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|> MapSet.new()
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end
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@doc """
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Gets the top albums by scrobble count for the given number of days.
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Returns a list of maps with album information and play counts.
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"""
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def get_top_albums_by_days(days, opts) do
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limit = Keyword.get(opts, :limit, 10)
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current_time = Keyword.get_lazy(opts, :current_time, &DateTime.utc_now/0)
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timezone = Keyword.get(opts, :timezone, &resolve_timezone!/0)
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cutoff_timestamp =
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current_time
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|> DateTime.add(-days, :day)
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|> NaiveDateTime.beginning_of_day()
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|> DateTime.from_naive!(timezone)
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|> DateTime.to_unix()
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query =
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from t in Track,
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where: t.scrobbled_at_uts >= ^cutoff_timestamp,
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group_by: [
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fragment("json_extract(album, '$.title')"),
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fragment("json_extract(artist, '$.name')")
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],
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select: %{
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album_title: fragment("json_extract(album, '$.title')"),
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artist_name: fragment("json_extract(artist, '$.name')"),
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artist_musicbrainz_id: fragment("json_extract(artist, '$.musicbrainz_id')"),
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play_count: count(t.scrobbled_at_uts),
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cover_url: fragment("max(?)", t.cover_url),
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album_musicbrainz_id: fragment("json_extract(album, '$.musicbrainz_id')")
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},
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order_by: [desc: count(t.scrobbled_at_uts)],
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limit: ^limit
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Repo.all(query)
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end
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@doc """
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Gets the top albums by scrobble count across all time.
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Returns a list of maps with album information and play counts.
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"""
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def get_top_albums(opts) do
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limit = Keyword.get(opts, :limit, 10)
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query =
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from t in Track,
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group_by: [
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fragment("json_extract(album, '$.title')"),
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fragment("json_extract(artist, '$.name')")
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],
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select: %{
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album_title: fragment("json_extract(album, '$.title')"),
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artist_name: fragment("json_extract(artist, '$.name')"),
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artist_musicbrainz_id: fragment("json_extract(artist, '$.musicbrainz_id')"),
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play_count: count(t.scrobbled_at_uts),
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cover_url: fragment("max(?)", t.cover_url),
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album_musicbrainz_id: fragment("json_extract(album, '$.musicbrainz_id')")
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},
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order_by: [desc: count(t.scrobbled_at_uts)],
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limit: ^limit
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Repo.all(query)
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end
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@doc """
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Gets the top artists by scrobble count across all time.
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Returns a list of maps with artist information and play counts.
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"""
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def get_top_artists(opts) do
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limit = Keyword.get(opts, :limit, 10)
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query =
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from t in Track,
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group_by: [
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fragment("json_extract(artist, '$.name')"),
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fragment("json_extract(artist, '$.musicbrainz_id')")
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],
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select: %{
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artist_name: fragment("json_extract(artist, '$.name')"),
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artist_musicbrainz_id: fragment("json_extract(artist, '$.musicbrainz_id')"),
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play_count: count(t.scrobbled_at_uts)
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},
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order_by: [desc: count(t.scrobbled_at_uts)],
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limit: ^limit
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Repo.all(query)
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end
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@doc """
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Gets the top artists by scrobble count for the given number of days.
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Returns a list of maps with artist information and play counts.
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"""
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def get_top_artists_by_days(days, opts) do
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limit = Keyword.get(opts, :limit, 10)
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current_time = Keyword.get_lazy(opts, :current_time, &DateTime.utc_now/0)
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timezone = Keyword.get(opts, :timezone, &resolve_timezone!/0)
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cutoff_timestamp =
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current_time
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|> DateTime.add(-days, :day)
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|> NaiveDateTime.beginning_of_day()
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|> DateTime.from_naive!(timezone)
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|> DateTime.to_unix()
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query =
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from t in Track,
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where: t.scrobbled_at_uts >= ^cutoff_timestamp,
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group_by: [
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fragment("json_extract(artist, '$.name')"),
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fragment("json_extract(artist, '$.musicbrainz_id')")
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],
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select: %{
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artist_name: fragment("json_extract(artist, '$.name')"),
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artist_musicbrainz_id: fragment("json_extract(artist, '$.musicbrainz_id')"),
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play_count: count(t.scrobbled_at_uts)
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},
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order_by: [desc: count(t.scrobbled_at_uts)],
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limit: ^limit
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Repo.all(query)
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end
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@doc """
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Gets top albums for multiple time periods (30, 90, 365 days) and all time.
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Returns a map with the results for each period, along with collected and
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wishlisted releases.
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"""
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def get_top_albums_by_periods(opts) do
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last_30_days = get_top_albums_by_days(30, opts)
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last_90_days = get_top_albums_by_days(90, opts)
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last_365_days = get_top_albums_by_days(365, opts)
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all_time = get_top_albums(opts)
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all_album_ids =
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(last_30_days ++ last_90_days ++ last_365_days ++ all_time)
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|> Enum.map(fn t -> t.album_musicbrainz_id end)
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|> Enum.uniq()
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|> Enum.reject(fn musicbrainz_id -> musicbrainz_id == "" end)
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collected_releases = Collection.collected_releases(all_album_ids)
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wishlisted_releases = Wishlist.wishlisted_releases(all_album_ids)
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%{
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collected_releases: collected_releases,
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wishlisted_releases: wishlisted_releases,
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last_30_days: last_30_days,
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last_90_days: last_90_days,
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last_365_days: last_365_days,
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all_time: all_time
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}
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end
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@doc """
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Gets top artists for multiple time periods (30, 90, 365 days) and all time.
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Returns a map with the results for each period.
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"""
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def get_top_artists_by_periods(opts) do
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last_30_days = get_top_artists_by_days(30, opts)
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last_90_days = get_top_artists_by_days(90, opts)
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last_365_days = get_top_artists_by_days(365, opts)
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all_time = get_top_artists(opts)
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%{
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last_30_days: last_30_days,
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last_90_days: last_90_days,
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last_365_days: last_365_days,
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all_time: all_time
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}
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end
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defp resolve_timezone! do
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Application.get_env(:music_library, MusicLibraryWeb)
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|> Keyword.fetch!(:timezone)
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end
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end
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