#' @title Forecast
#'
#' @description Forecast encapsulation
#'
#' @field pred List with
#' \itemize{
#'   \item serie: forecasted serie
#'   \item params: corresponding list of parameters (weights, neighbors...)
#'   \item index: corresponding index in data object
#' }
#'
#' @exportClass Forecast
#' @export Forecast
Forecast = setRefClass(
	Class = "Forecast",

	fields = list(
		pred = "list"
	),

	methods = list(
		initialize = function(...)
		{
			"Initialize empty Forecast object"

			callSuper(...)
		},
		append = function(new_serie, new_params, new_index)
		{
			"Obtain a new pair (serie, params)"

			pred[[length(pred)+1]] <<- list("serie"=new_serie, "params"=new_params, "index"=new_index)
		},
		getSize = function()
		{
			length(pred)
		},
		getSerie = function(index)
		{
			"Get serie values at specified index"

			pred[[index]]$serie
		},
		getParams = function(index)
		{
			"Get params at specified index"

			pred[[index]]$params
		},
		getIndexInData = function(index)
		{
			"Get (day)index at specified index"

			pred[[index]]$index
		}
	)
)