swarm_ex

# File: swarm_ex/lib/swarm_ex/tools/retrieval.ex

defmodule SwarmEx.Tools.Retrieval do
  @moduledoc """
  A tool for retrieving and searching through documents and other content.
  Supports various data sources and search strategies.
  """

  @behaviour SwarmEx.Tool

  alias SwarmEx.Tool

  @type query :: %{
          query: String.t(),
          data_source: atom(),
          limit: integer(),
          filters: map()
        }

  @type retrieval_result :: %{
          content: String.t(),
          source: String.t(),
          relevance_score: float(),
          metadata: map()
        }

  @impl Tool
  def execute(%{query: query, data_source: source} = args) do
    # TODO: Implement retrieval logic based on data source
    case source do
      :vector_store -> search_vector_store(query, args)
      :document_store -> search_document_store(query, args)
      :knowledge_base -> search_knowledge_base(query, args)
      _ -> {:error, :unsupported_data_source}
    end
  end

  @impl Tool
  def validate(args) do
    # TODO: Implement validation logic
    # Check for required fields and valid data source
    with :ok <- validate_query(args),
         :ok <- validate_data_source(args),
         :ok <- validate_filters(args) do
      :ok
    end
  end

  @impl Tool
  def cleanup(_args), do: :ok

  # Private helper functions

  defp search_vector_store(query, args) do
    # TODO: Implement vector store search
    # This will likely use external embeddings and similarity search
    {:error, :not_implemented}
  end

  defp search_document_store(query, args) do
    # TODO: Implement document store search
    # This will handle raw document searching and filtering
    {:error, :not_implemented}
  end

  defp search_knowledge_base(query, args) do
    # TODO: Implement knowledge base search
    # This will handle structured knowledge retrieval
    {:error, :not_implemented}
  end

  defp validate_query(%{query: query}) when is_binary(query), do: :ok
  defp validate_query(_), do: {:error, :invalid_query}

  defp validate_data_source(%{data_source: source})
       when source in [:vector_store, :document_store, :knowledge_base],
       do: :ok

  defp validate_data_source(_), do: {:error, :invalid_data_source}

  defp validate_filters(%{filters: filters}) when is_map(filters), do: :ok
  defp validate_filters(%{filters: _}), do: {:error, :invalid_filters}
  # filters are optional
  defp validate_filters(_), do: :ok
end