# Licensed to Elasticsearch B.V under one or more agreements.
# Elasticsearch B.V licenses this file to you under the Apache 2.0 License.
# See the LICENSE file in the project root for more information

module Elasticsearch
  module API
    module Tasks
      module Actions
        # Returns a list of tasks.
        #
        # @option arguments [List] :nodes A comma-separated list of node IDs or names to limit the returned information; use `_local` to return information from the node you're connecting to, leave empty to get information from all nodes
        # @option arguments [List] :actions A comma-separated list of actions that should be returned. Leave empty to return all.
        # @option arguments [Boolean] :detailed Return detailed task information (default: false)
        # @option arguments [String] :parent_task_id Return tasks with specified parent task id (node_id:task_number). Set to -1 to return all.
        # @option arguments [Boolean] :wait_for_completion Wait for the matching tasks to complete (default: false)
        # @option arguments [String] :group_by Group tasks by nodes or parent/child relationships
        #   (options: nodes,parents,none)

        # @option arguments [Time] :timeout Explicit operation timeout
        # @option arguments [Hash] :headers Custom HTTP headers
        #
        # @see https://www.elastic.co/guide/en/elasticsearch/reference/7.7/tasks.html
        #
        def list(arguments = {})
          headers = arguments.delete(:headers) || {}

          arguments = arguments.clone

          method = Elasticsearch::API::HTTP_GET
          path   = "_tasks"
          params = Utils.__validate_and_extract_params arguments, ParamsRegistry.get(__method__)

          body = nil
          perform_request(method, path, params, body, headers).body
        end

        # Register this action with its valid params when the module is loaded.
        #
        # @since 6.2.0
        ParamsRegistry.register(:list, [
          :nodes,
          :actions,
          :detailed,
          :parent_task_id,
          :wait_for_completion,
          :group_by,
          :timeout
        ].freeze)
end
      end
  end
end