R/get_server_datasources.R

In vvtableau: R Interface for 'Tableau' Services

#' Get datasources from Tableau Server.
#'
#' Retrieves information about datasources from the Tableau Server using the provided authentication credentials.
#'
#' @param tableau A list containing the Tableau authentication variables: `base_url`, `token`, `user_id`, and `site_id`.
#' @param api_version The API version to use (default: 3.4).
#' @param page_number The page number of the results to retrieve (default: 1).
#' @param page_size The number of records to retrieve per page (default: 100).
#' @param include_metadata Logical indicating whether to include metadata columns in the result (default: FALSE).
#'
#' @return A data frame containing the datasource information.
#' @export
#'
#' @family Tableau REST API
get_server_datasources <- function(tableau, api_version = 3.4, page_number = 1, page_size = 100, include_metadata = FALSE) {
  base_url <- tableau$base_url
  token <- tableau$token
  site_id <- tableau$site_id

  url <- paste0(
    base_url,
    "api/",
    api_version,
    "/sites/",
    site_id,
    "/datasources?fields=_all_&pageSize=",
    page_size,
    "&pageNumber=",
    page_number
  )

  api_response <- httr::GET(
    url,
    httr::add_headers("X-Tableau-Auth" = token)
  )

  jsonResponseText <- httr::content(api_response, as = "text")

  df <- as.data.frame(jsonlite::fromJSON(jsonResponseText), check.names = FALSE) %>%
    tidyr::unnest(names_sep = ".") %>%
    dplyr::rename_with(~ stringr::str_remove(., "datasources.datasource."), dplyr::everything())

  if (!include_metadata) {
    df <- df %>%
      dplyr::select(-dplyr::starts_with("pagination"))
  }

  return(df)
}