defmodule YaloAuthor do
  @moduledoc """

  Read the README.md for the YaloMessage spec.
  """
  defstruct [:id, :role]

  def schema do
    %{
      "type" => "object",
      "properties" =>
      %{
        "id" => %{"type" => "string"},
        "role" => %{"type" => "string"}
      },
      "required" => ["id", "role"]
    }
  end
end

defmodule YaloPhoto do
  @moduledoc """

  Read the README.md for the YaloPhoto spec.
  """
  defstruct [:url]

  def schema do
    %{
      "type" => "object",
      "properties" =>
      %{
      },
      "required" => []
    }
  end
end

defmodule YaloDocument do
  @moduledoc """

  Read the README.md for the YaloDocument spec.
  """
  defstruct [:name]

end

defmodule YaloMessage do
  @moduledoc """

  Read the README.md for the YaloMessage spec.
  """
  @derive [Poison.Encoder]
  @enforce_keys [:botSlug, :date, :author, :m_id, :provider, :m_type, :reader]
  defstruct [:botSlug, :date, :author, :m_id, :provider, :reader, :m_type, :status, :text, :photo, :document]

  def schema do
    %{
      "type" => "object",
      "properties" =>
        %{
          "botSlug" => %{"type" => "string"},
          "date" => %{"type" => "integer"},
          "author" => YaloAuthor.schema,
          "m_id" => %{"type" => "string"},
          "provider" => %{"type" => "string"},
          "reader" => %{"type" => "string"},
          "m_type" => %{"type" => "string"},
          "status" => %{"type" => "string"},
        },
      "required" => ["botSlug", "date", "author", "m_id", "provider", "m_type", "reader"]
    }
  end

  def decode_json(message) do
    Poison.decode(message, as: %YaloMessage{
      botSlug: String,
      date: String,
      author: %YaloAuthor{},
      m_id: String,
      reader: String,
      provider: String,
      m_type: String,
    })  
  end

  def is_valid(m), do:
    ExJsonSchema.Validator.validate(schema(), Poison.decode!(Poison.encode!(m))) == :ok

end