layr8

defmodule Layr8.Error do
  @moduledoc """
  Base exception for all Layr8 SDK errors.
  """

  defexception [:message]

  @type t :: %__MODULE__{message: String.t()}
end

defmodule Layr8.NotConnectedError do
  @moduledoc """
  Raised when `send/2` or `request/3` is called before `connect/1`.
  """

  defexception message: "client is not connected"

  @type t :: %__MODULE__{message: String.t()}
end

defmodule Layr8.AlreadyConnectedError do
  @moduledoc """
  Raised when `handle/3` is called after `connect/1`.
  """

  defexception message: "client is already connected"

  @type t :: %__MODULE__{message: String.t()}
end

defmodule Layr8.ClientClosedError do
  @moduledoc """
  Raised when `connect/1` is called after `close/1`.
  """

  defexception message: "client is closed"

  @type t :: %__MODULE__{message: String.t()}
end

defmodule Layr8.ConnectionError do
  @moduledoc """
  Represents a failure to connect to the cloud-node.
  """

  defexception [:message, :url, :reason]

  @type t :: %__MODULE__{message: String.t(), url: String.t(), reason: String.t()}

  @impl true
  def exception(opts) when is_list(opts) do
    url = Keyword.get(opts, :url, "")
    reason = Keyword.get(opts, :reason, "unknown")
    %__MODULE__{url: url, reason: reason, message: "connection error [#{url}]: #{reason}"}
  end
end

defmodule Layr8.ProblemReportError do
  @moduledoc """
  Represents a DIDComm problem report received from a remote agent.

  See https://identity.foundation/didcomm-messaging/spec/#problem-reports
  """

  defexception [:message, :code, :comment]

  @type t :: %__MODULE__{message: String.t(), code: String.t(), comment: String.t()}

  @impl true
  def exception(opts) when is_list(opts) do
    code = Keyword.get(opts, :code, "unknown")
    comment = Keyword.get(opts, :comment, "unknown error")
    %__MODULE__{code: code, comment: comment, message: "problem report [#{code}]: #{comment}"}
  end
end