defmodule Slack.Team do
  @moduledoc ~S"""
  A Slack team.
  """

  @typedoc @moduledoc
  @type t :: %__MODULE__{
          id: String.t(),
          name: String.t(),
          domain: String.t()
        }

  @enforce_keys [
    :id,
    :name,
    :domain
  ]
  defstruct @enforce_keys

  @doc ~S"""
  Parse Slack team.
  """
  @spec parse(map) ::
          {:ok, t}
          | {:error, :team_missing_id | :team_missing_name | :team_missing_domain | :invalid_team}
  def parse(data = %{}) do
    id = MapX.get(data, :id)
    name = MapX.get(data, :name)
    domain = MapX.get(data, :domain)

    cond do
      is_nil(id) -> {:error, :team_missing_id}
      is_nil(name) -> {:error, :team_missing_name}
      is_nil(domain) -> {:error, :team_missing_domain}
      :valid -> {:ok, %__MODULE__{id: id, name: name, domain: domain}}
    end
  end

  def parse(_), do: {:error, :invalid_team}
end