#' Query Opencast for a specific events acl
#'
#' Returns an event's access policy.
#'
#' This function expects the hostname, username and password to be set as environment variables.
#'
#' @return Returns an event's access policy.
#' @param eventId The event id
#' @importFrom httr modify_url
#' @export
#' @examples
#' Sys.setenv(OPENCAST_HOST = "https://legacy.opencast.org")
#' Sys.setenv(OPENCAST_USERNAME = "admin")
#' Sys.setenv(OPENCAST_PASSWORD = "opencast")
#'
#' events <- oc_list_events()
#'
#' oc_event_acl(events$content$identifier[1])
oc_event_acl <- function(eventId = "") {
# Check needed arguments
if (eventId == "") {
stop("No eventId specified.", call. = FALSE)
}
# Set the url path
path <- paste("/api/events/", eventId, "/acl", sep = "")
# Construct the url for the api call
url <- modify_url(oc_hostname(), path = path)
# Query the api and return the response
oc_package_query(url)
}
#' Print result of oc_event_acl()
#'
#' Print a structured return of the oc_event_acl() function.
#'
#' @param x The return of the function this print function relates to.
#' @param ... Possible further options to the print function.
#' @return A structured print of the return by the oc_event_acl() function.
#' @seealso \code{\link{oc_event_acl}}
#' @importFrom utils str
#' @export
#' @examples
#' Sys.setenv(OPENCAST_HOST = "https://legacy.opencast.org")
#' Sys.setenv(OPENCAST_USERNAME = "admin")
#' Sys.setenv(OPENCAST_PASSWORD = "opencast")
#'
#' events <- oc_list_events()
#'
#' resp <- oc_event_acl(events$content$identifier[1])
#'
#' resp
print.oc_event_acl <- function(x, ...) {
cat("<Opencast ", x$path, ">\n", sep = "")
str(x$content)
invisible(x)
}
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