Claudio Ortolina
37 lines
935 B
Elixir
37 lines
935 B
Elixir
defmodule MusicBrainz.ExternalLink do
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@moduledoc false
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defstruct [:name, :url]
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@type t :: %__MODULE__{
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name: atom(),
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url: String.t()
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}
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@spec external_links(map(), map() | String.t() | nil) :: [t()] | [String.t()]
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def external_links(musicbrainz_data, patterns) when is_map(patterns) do
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Enum.reduce(patterns, [], fn {name, pattern}, acc ->
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case external_links(musicbrainz_data, pattern) do
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[] ->
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acc
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[url | _rest] ->
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[%__MODULE__{name: name, url: url} | acc]
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end
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end)
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end
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def external_links(musicbrainz_data, pattern) do
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case get_in(musicbrainz_data, ["relations", Access.all(), "url", "resource"]) do
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nil -> []
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urls -> filter_urls(urls, pattern)
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end
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end
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defp filter_urls(urls, nil), do: urls
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defp filter_urls(urls, pattern) do
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Enum.filter(urls, fn url -> String.contains?(url, pattern) end)
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end
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end
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