#' Check users
#'
#' @description Retrieves the users having access to the account
#'
#' @param id ID of object to retrieve.
#' @param token A valid token as returned by \code{\link{fbAuthenticate}} or a short-term token from \href{https://developers.facebook.com/tools/explorer}{facebook Graph API Explorer}.
#'
#' @examples
#' \dontrun{
#' # get information on account
#' ads <- grabAds(account.id = "act_123456789012345", token = "XXXXXXXXXXX")
#' }
#'
#' @seealso \code{\link{checkTargetTree}}
#'
#' @author John Coene \email{jcoenep@@gmail.com}
#'
#' @export
checkUsers <- function(id, token){
# check inputs
if(missing(id)){
stop("Missing id")
} else if (missing(token)){
stop("Missing token")
}
# check token
token <- checkToken(token = token)
# build url
url <- paste0("https://graph.facebook.com/v2.8/",
id, "/users?",
"access_token=", token)
# call api
response <- httr::GET(url)
# parse to list
json <- rjson::fromJSON(rawToChar(response$content))
# check if query successful
if(length(json$error$message)){
stop(paste("this is likely due to account.id or token. Error Message returned: ",
json$error$message))
}
# check if data returned
if (length(json$data)) {
# parse
dat <- do.call(plyr::"rbind.fill", lapply(json$data, as.data.frame))
perm <- data.frame(permissions = c(1, 2, 3, 4, 5, 7, 9, 10),
permission = c("ACCOUNT_ADMIN", "ADMANAGER_READ",
"ADMANAGER_WRITE", "BILLING_READ",
"BILLING_WRITE", "REPORTS",
"DIRECT_MANAGED", "DIRECT_MANAGED"),
stringsAsFactors = FALSE)
dat <- plyr::join(dat, perm, by = c("permissions"), type = "left")
dat$permissions <- NULL
roles <- data.frame(role = c(1001, 1002, 1003, 1004),
roles = c("Administrator", "Advertiser",
"Analyst", "Sales"))
dat <- plyr::join(dat, roles, by = c("role"), type = "left")
dat$role <- NULL
} else if (!length(json$data)) {
# create empty data.frame to return
dat <- data.frame()
}
if (nrow(dat) == 0) warning(paste("No data."), call. = FALSE)
return(dat)
}
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