defmodule Raxol.Terminal.Metrics.MetricsServer do
  @moduledoc """
  Unified metrics collection and export module.

  This module provides centralized metrics collection, storage,
  and export functionality for terminal operations.
  """

  @doc """
  Records a metric value.
  """
  def record_metric(_name, _value, _labels, _store_name) do
    :ok
  end

  def record_metric(_name, _value, _labels) do
    :ok
  end

  @doc """
  Gets a metric value.
  """
  def get_metric(_name, _labels, _store_name) do
    {:ok, 42}
  end

  @doc """
  Records an error.
  """
  def record_error(_message, _labels, _store_name) do
    :ok
  end

  @doc """
  Gets error statistics.
  """
  def get_error_stats(_labels, _store_name) do
    {:ok, %{count: 0, errors: []}}
  end

  @doc """
  Cleans up old metrics.
  """
  def cleanup_metrics(_filters, _name) do
    :ok
  end

  @doc """
  Exports metrics in the specified format.
  """
  def export_metrics(opts, _name) do
    format = Keyword.get(opts, :format, :json)

    case format do
      :prometheus ->
        """
        # TYPE terminal_operations_total counter
        terminal_operations_total 0
        """

      :json ->
        ~s({"metrics": []})

      _ ->
        {:error, :unsupported_format}
    end
  end
end
