Claudio Ortolina
99 lines
3.0 KiB
Elixir
99 lines
3.0 KiB
Elixir
defmodule MusicLibrary.BarcodeScan do
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@moduledoc """
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Barcode-to-MusicBrainz lookup workflow.
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"""
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alias MusicLibrary.BarcodeScan.Result
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alias MusicLibrary.Records
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alias MusicLibrary.Worker.ImportFromMusicbrainzRelease
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@spec scan(String.t()) :: {:ok, Result.t()} | {:error, term()}
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def scan(number) do
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case MusicBrainz.search_release_by_barcode(number) do
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{:ok, [best_match_release | _other_releases]} ->
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format = MusicBrainz.ReleaseSearchResult.format(best_match_release)
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case Records.get_release_status(best_match_release.id, format) do
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:new ->
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{:ok, Result.new(number, best_match_release)}
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{:wishlisted, record_id} ->
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{:ok, Result.wishlisted(number, record_id, best_match_release)}
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{:collected, record_id} ->
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{:ok, Result.collected(number, record_id, best_match_release)}
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end
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{:ok, []} ->
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{:ok, Result.not_found(number)}
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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 should_import_async?([Result.t()]) :: boolean()
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def should_import_async?(scan_results) do
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Enum.count(scan_results, &(&1.status == :new)) >= 2
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end
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@spec import_results_async([Result.t()], DateTime.t()) ::
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{:ok, sync_errors :: [{String.t(), term()}], async_count :: non_neg_integer()}
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def import_results_async(scan_results, current_time) do
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{new_results, other_results} = Enum.split_with(scan_results, &(&1.status == :new))
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sync_errors = import_results(other_results, current_time)
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Enum.each(new_results, fn scan_result ->
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%{
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"release_id" => scan_result.release.id,
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"format" => MusicBrainz.ReleaseSearchResult.format(scan_result.release),
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"purchased_at" => DateTime.to_iso8601(current_time),
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"selected_release_id" => scan_result.release.id
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}
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|> ImportFromMusicbrainzRelease.new()
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|> Oban.insert!()
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end)
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{:ok, sync_errors, length(new_results)}
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end
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@spec import_results([Result.t()], DateTime.t()) :: [{String.t(), term()}]
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def import_results(scan_results, current_time) do
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Enum.reduce(scan_results, [], fn scan_result, errors ->
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case import_result(scan_result, current_time) do
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{:error, reason} ->
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[{scan_result.number, reason} | errors]
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_ ->
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errors
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end
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end)
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end
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defp import_result(scan_result, current_time) do
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case scan_result.status do
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:new ->
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Records.import_from_musicbrainz_release(scan_result.release.id,
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format: MusicBrainz.ReleaseSearchResult.format(scan_result.release),
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purchased_at: current_time,
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selected_release_id: scan_result.release.id
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)
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:wishlisted ->
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scan_result.record_id
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|> Records.get_record!()
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|> Records.update_record(%{
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"purchased_at" => current_time,
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"selected_release_id" => scan_result.release.id
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})
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:collected ->
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{:error, :already_collected}
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:not_found ->
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{:error, :not_found}
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end
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end
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end
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