Claudio Ortolina
472 lines
15 KiB
Elixir
472 lines
15 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, Records.ArtistRecord, 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 scrobble_count do
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Repo.aggregate(Track, :count, :scrobbled_at_uts)
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end
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def recent_activity(timezone, limit \\ 100) do
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# When we get recent tracks, we need to:
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#
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# - Map each track to a record in the collection (if it exists)
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# - Map each track to a record in the wishlist (if it exists)
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# - Map each track to an artist, knowing that sometimes track artists do
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# not have the necessary information. In that case we can go from
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# track -> album -> record -> artist
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all_artists_query =
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from ar in ArtistRecord,
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distinct: true
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tracks_query =
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from t in Track,
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left_join: cr in subquery(Collection.collected_releases_query()),
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on: cr.release_id == fragment("? ->> '$.musicbrainz_id'", t.album),
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left_join: wr in subquery(Wishlist.wishlisted_releases_query()),
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on: wr.release_id == fragment("? ->> '$.musicbrainz_id'", t.album),
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left_join: ar in subquery(all_artists_query),
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on: wr.record_id == ar.record_id or cr.record_id == ar.record_id,
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order_by: [desc: t.scrobbled_at_uts],
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limit: ^limit,
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select: %{
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track: t,
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collected_record_id: cr.record_id,
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wishlisted_record_id: wr.record_id,
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artist_id: ar.musicbrainz_id,
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cover_hash: coalesce(cr.cover_hash, wr.cover_hash)
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}
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recent_tracks = Repo.all(tracks_query)
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recent_tracks =
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recent_tracks
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|> Enum.map(fn %{track: track, artist_id: artist_id} = rt ->
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%{rt | track: polifyll_track(track, timezone, artist_id)}
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end)
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recent_albums =
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recent_tracks
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|> Enum.dedup_by(fn %{track: track} -> track.album end)
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|> Enum.map(fn %{track: track} = tr ->
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tr
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|> Map.delete(:track)
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|> Map.put(
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:album,
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%{
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scrobbled_at_uts: track.scrobbled_at_uts,
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scrobbled_at_label: track.scrobbled_at_label,
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metadata: track.album,
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artist: track.artist,
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cover_url: track.cover_url
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}
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)
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end)
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%{
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recent_tracks: recent_tracks,
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recent_albums: recent_albums
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}
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end
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defp polifyll_track(track, timezone, artist_id) do
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%{
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track
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| scrobbled_at_label: localize_scrobbled_at(track.scrobbled_at_uts, timezone),
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artist: polyfill_artist(track.artist, artist_id)
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}
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end
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defp polyfill_artist(artist, musicbrainz_id) do
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if is_nil(artist.musicbrainz_id) or artist.musicbrainz_id == "" do
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%{artist | musicbrainz_id: musicbrainz_id}
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else
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artist
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end
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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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@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, &MusicLibrary.default_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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left_join: cr in subquery(Collection.collected_releases_query()),
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on: cr.release_id == fragment("? ->> '$.musicbrainz_id'", t.album),
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left_join: wr in subquery(Wishlist.wishlisted_releases_query()),
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on: wr.release_id == fragment("? ->> '$.musicbrainz_id'", t.album),
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where: t.scrobbled_at_uts >= ^cutoff_timestamp,
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where: fragment("json_extract(album, '$.title') != ''"),
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group_by: [
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fragment("json_extract(album, '$.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, '$.musicbrainz_id')"),
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collected_record_id: cr.record_id,
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wishlisted_record_id: wr.record_id,
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cover_hash: coalesce(cr.cover_hash, wr.cover_hash)
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},
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order_by: [desc: count(t.scrobbled_at_uts)],
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limit: ^limit
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Repo.all(query)
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end
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@doc """
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Gets the top albums by scrobble count across all time.
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Returns a list of maps with album information and play counts.
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"""
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def get_top_albums(opts) do
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limit = Keyword.get(opts, :limit, 10)
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query =
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from t in Track,
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left_join: cr in subquery(Collection.collected_releases_query()),
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on: cr.release_id == fragment("? ->> '$.musicbrainz_id'", t.album),
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left_join: wr in subquery(Wishlist.wishlisted_releases_query()),
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on: wr.release_id == fragment("? ->> '$.musicbrainz_id'", t.album),
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where: fragment("json_extract(album, '$.title') != ''"),
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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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collected_record_id: cr.record_id,
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wishlisted_record_id: wr.record_id,
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cover_hash: coalesce(cr.cover_hash, wr.cover_hash)
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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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join: ai in Artists.ArtistInfo,
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on: ai.id == fragment("json_extract(?, '$.musicbrainz_id')", t.artist),
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group_by: [
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fragment("json_extract(artist, '$.name')"),
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fragment("json_extract(artist, '$.musicbrainz_id')")
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],
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select: %{
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name: fragment("json_extract(artist, '$.name')"),
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musicbrainz_id: fragment("json_extract(artist, '$.musicbrainz_id')"),
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image_hash: ai.image_data_hash,
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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, &MusicLibrary.default_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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join: ai in Artists.ArtistInfo,
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on: ai.id == fragment("json_extract(?, '$.musicbrainz_id')", t.artist),
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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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name: fragment("json_extract(artist, '$.name')"),
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musicbrainz_id: fragment("json_extract(artist, '$.musicbrainz_id')"),
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image_hash: ai.image_data_hash,
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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 the specified time periods (30, 90, 365 days) and all
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time. Returns a map with the results, along with collected and wishlisted
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releases.
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"""
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def get_top_albums_by_period(opts) do
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case Keyword.get(opts, :period, :last_7_days) do
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:all_time -> get_top_albums(opts)
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:last_7_days -> get_top_albums_by_days(7, opts)
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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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end
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end
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@doc """
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Gets top artists for a time period (30, 90, 365 days) and all time.
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"""
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def get_top_artists_by_period(opts) do
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period = Keyword.get(opts, :period, :last_7_days)
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case period do
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:all_time -> get_top_artists(opts)
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:last_7_days -> get_top_artists_by_days(7, opts)
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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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end
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end
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@doc """
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Lists scrobbled tracks with pagination and search support.
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"""
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def list_tracks(params \\ %{}) do
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query = Map.get(params, :query, "")
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page = Map.get(params, :page, 1)
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page_size = Map.get(params, :page_size, 200)
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order = Map.get(params, :order, :scrobbled_at)
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base_query = from(t in Track)
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search_query =
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if query == "" do
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base_query
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else
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query_term = "%#{String.downcase(query)}%"
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from t in base_query,
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where:
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like(fragment("lower(?)", t.title), ^query_term) or
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like(fragment("lower(json_extract(artist, '$.name'))"), ^query_term) or
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like(fragment("lower(json_extract(album, '$.title'))"), ^query_term)
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end
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ordered_query =
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case order do
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:scrobbled_at ->
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from t in search_query, order_by: [desc: t.scrobbled_at_uts]
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:title ->
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from t in search_query, order_by: [asc: t.title]
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:artist ->
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from t in search_query, order_by: [asc: fragment("json_extract(artist, '$.name')")]
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:album ->
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from t in search_query, order_by: [asc: fragment("json_extract(album, '$.title')")]
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end
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offset = (page - 1) * page_size
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from(t in ordered_query, limit: ^page_size, offset: ^offset)
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|> Repo.all()
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end
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@doc """
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Gets a single track by scrobbled_at_uts.
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"""
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def get_track!(scrobbled_at_uts) when is_integer(scrobbled_at_uts) do
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Repo.get!(Track, scrobbled_at_uts)
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end
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def get_track!(scrobbled_at_uts) when is_binary(scrobbled_at_uts) do
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case Integer.parse(scrobbled_at_uts) do
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{id, ""} -> get_track!(id)
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_ -> raise Ecto.NoResultsError, queryable: Track
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end
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end
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@doc """
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Updates a track with the given attributes.
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"""
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def update_track(%Track{} = track, attrs) do
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changeset = Track.changeset(track, attrs)
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Repo.update(changeset)
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end
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@doc """
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Deletes a track.
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"""
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def delete_track(%Track{} = track) do
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Repo.delete(track)
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end
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@doc """
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Counts tracks matching the search query.
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"""
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def search_tracks_count(query \\ "") do
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base_query = from(t in Track)
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search_query =
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if query == "" do
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base_query
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else
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query_term = "%#{String.downcase(query)}%"
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from t in base_query,
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where:
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like(fragment("lower(?)", t.title), ^query_term) or
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like(fragment("lower(json_extract(artist, '$.name'))"), ^query_term) or
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like(fragment("lower(json_extract(album, '$.title'))"), ^query_term)
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end
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Repo.aggregate(search_query, :count, :scrobbled_at_uts)
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end
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end
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