Files
music_library/lib/last_fm/artist.ex
T
2026-03-24 15:01:16 +00:00

79 lines
1.8 KiB
Elixir

defmodule LastFm.Artist do
use Ecto.Schema
import Ecto.Changeset
@type t :: %__MODULE__{
musicbrainz_id: String.t(),
name: String.t(),
summary: String.t(),
bio: String.t(),
image: String.t(),
play_count: non_neg_integer(),
base_url: String.t(),
image_data_hash: String.t() | nil
}
@primary_key false
embedded_schema do
field :musicbrainz_id, :string
field :name, :string
field :summary, :string
field :bio, :string
field :image, :string
field :play_count, :integer, default: 0
field :base_url, :string
field :image_data_hash, :string
end
@spec from_api_response(map()) :: t()
def from_api_response(api_response) do
%__MODULE__{
musicbrainz_id: api_response["mbid"],
name: api_response["name"],
summary: api_response["bio"]["summary"] || "",
bio: api_response["bio"]["content"] || "",
image: get_image(api_response),
play_count: get_play_count(api_response),
base_url: api_response["url"]
}
end
@spec changeset(t(), map()) :: Ecto.Changeset.t()
def changeset(artist, attrs) do
artist
|> cast(attrs, [
:musicbrainz_id,
:name,
:summary,
:bio,
:image,
:play_count,
:base_url
])
|> validate_required([:name])
end
defp get_image(api_response) do
api_response["image"]
|> Enum.find(%{"#text" => nil}, fn i -> i["size"] == "medium" end)
|> Map.get("#text")
end
defp get_play_count(api_response) do
case get_in(api_response, ["stats", "userplaycount"]) do
nil -> 0
value -> parse_play_count(value)
end
end
defp parse_play_count(value) when is_binary(value) do
case Integer.parse(value) do
{int, ""} -> int
_ -> 0
end
end
defp parse_play_count(_), do: 0
end