neiam /oh-my-ex-oh-ircd

defmodule OhMyExOhIrcd.Scrobbles.Scrobble do
  @moduledoc """
  Append-only record of an announced scrobble, kept so the web UI can
  show the last-N tracks for a channel.
  """

  use Ecto.Schema
  import Ecto.Changeset

  alias OhMyExOhIrcd.Channels.ChannelRecord

  schema "scrobbles" do
    field :who, :string
    field :artist, :string
    field :track, :string
    field :album, :string

    belongs_to :channel, ChannelRecord

    timestamps(type: :utc_datetime, updated_at: false)
  end

  def changeset(record, attrs) do
    record
    |> cast(attrs, [:channel_id, :who, :artist, :track, :album])
    |> validate_required([:channel_id, :who, :artist, :track])
    |> validate_length(:who, max: 64)
    |> validate_length(:artist, max: 256)
    |> validate_length(:track, max: 256)
    |> validate_length(:album, max: 256)
    |> assoc_constraint(:channel)
  end
end