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#' Gather Matchup Data in a League for a Week
#'
#' Given a league ID and week number, grab the matchup data, including player points, total points,
#' starting rosters, and more.
#'
#' @return Returns a data frame containing information about the matchups.
#' @author Nick Bultman, \email{njbultman74@@gmail.com}, September 2021
#' @keywords matchups league
#' @importFrom httr GET content
#' @importFrom jsonlite fromJSON
#' @export
#' @examples
#' \dontrun{get_matchups(688281863499907072, 2)}
#' \dontrun{get_matchups("688281863499907072", 1)}
#'
#' @param league_id League ID generated by Sleeper (numeric or character)
#' @param week Matchup week (numeric)
#'
get_matchups <- function(league_id, week) {
# Check class of week parameter to see if numeric
if(!is.numeric(week)) {
# If not numeric, inform user and halt function
stop("week paramater must be numeric")
} else {
# If numeric, execute query to API given inputs specified
x <- jsonlite::fromJSON(httr::content(httr::GET(paste0("https://api.sleeper.app/v1/league/", league_id, "/matchups/", week)), as = "text"))
}
# Check if returned object is of class list
if(inherits(x, "list")) {
# If list, inform user and return nothing
message("No data found. Was the week entered a valid week in terms of your season settings?")
# If not list, check if NULL
} else if(is.null(x)) {
# If NULL, inform user and return nothing
message("No data found. Was the league ID entered correctly?")
} else {
# If not NULL, break out nested data frame
x_player_points <- x$players_points
# Remove nested data frame from main query
x$players_points <- NULL
# Bind broken out data frame to main query
x_fin <- cbind(x, x_player_points)
# Return final data frame
return(x_fin)
}
}
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