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#' Download full promotions and transactions data simultaneously.
#'
#' The promotions and transactions data sets are too large to be contained within
#' the package. \code{get_data()} is a convenience function to download both
#' full promotions and transactions data sets simultaneously from the
#' source GitHub repository. An internet connection is required.
#'
#' @param which Character string of one or more data sets to be downloaded.
#' Can be one of the following; default is \code{"both"}:
#' \itemize{
#' \item{"both"}
#' \item{"promotions"}
#' \item{"transactions"}
#' }
#' @param verbose Logical indicator whether or not to download silently.
#'
#' @source Downloading from \url{https://github.com/bradleyboehmke/completejourney/tree/master/data}.
#' Data originated from 84.51°, Customer Journey study, \url{http://www.8451.com/area51/}
#' and were processes for analysis.
#'
#' @return Downloading a single data set will result in a tibble whereas
#' downloading multiple data sets will return a list containing each tibble.
#' For specific details on a given data set see the data sets respective help
#' file (i.e. \code{?transactions_sample}).
#'
#' @seealso Use \code{\link[zeallot]{\%<-\%}} for unpacking a list with multiple
#' tibbles to their own global environment tibble. You can also download a
#' single data set with \code{\link{get_promotions}} and \code{\link{get_transactions}}.
#'
#' @examples
#' \donttest{
#' # download transactions and promotions data sets
#' # requires internet connection
#' c(promotions, transactions) %<-% get_data(which = 'both')
#' }
#' @export
get_data <- function(which = "both", verbose = TRUE) {
valid <- c(
"both",
"promotions",
"transactions"
)
if (any(which %notin% valid)) {
quoted_valids <- paste0("'", paste0(valid, collapse = "', '"), "'")
quoted_valids <- paste(strwrap(quoted_valids), collapse = "\n")
stop("`which` must be one of the following:\n", quoted_valids)
}
download_data(which = which, verbose = verbose)
}
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