release_kit

defmodule ReleaseKit.ArtifactInfo do
  @moduledoc """
  Metadata about a packaged release artifact.
  """

  @enforce_keys [:path, :size, :checksum]
  defstruct [:path, :size, :checksum, compression: :gzip]

  @type checksum :: %{algorithm: :sha256, value: String.t(), sidecar: Path.t() | nil}

  @type t :: %__MODULE__{
          path: Path.t(),
          size: non_neg_integer(),
          compression: :gzip,
          checksum: checksum()
        }

  @doc """
  Builds artifact metadata for a packaged file.
  """
  @spec new(Path.t(), String.t(), Path.t() | nil) :: t()
  def new(path, sha256, sidecar \\ nil) do
    %__MODULE__{
      path: path,
      size: File.stat!(path).size,
      checksum: %{algorithm: :sha256, value: sha256, sidecar: sidecar}
    }
  end

  @doc """
  Converts artifact metadata to the external manifest representation.
  """
  @spec to_external_map(t()) :: map()
  def to_external_map(%__MODULE__{} = artifact) do
    Map.from_struct(artifact)
  end
end