#' Get Betting information from games
#'
#' @param game_id (\emph{Integer} optional): Game ID filter for querying a single game
#' Can be found using the \code{\link[cfbscrapR:cfb_game_info]{cfbscrapR::cfb_game_info()}} function
#' @param year (\emph{Integer} required): Year, 4 digit format(\emph{YYYY})
#' @param week (\emph{Integer} optional): Week - values from 1-15, 1-14 for seasons pre-playoff (i.e. 2013 or earlier)
#' @param season_type (\emph{String} default regular): Select Season Type: regular or postseason
#' @param team (\emph{String} optional): D-I Team
#' @param home_team (\emph{String} optional): Home D-I Team
#' @param away_team (\emph{String} optional): Away D-I Team
#' @param conference (\emph{String} optional): Conference abbreviation - Select a valid FBS conference\cr
#' Conference abbreviations P5: ACC, B12, B1G, SEC, PAC\cr
#' Conference abbreviations G5 and FBS Independents: CUSA, MAC, MWC, Ind, SBC, AAC\cr
#' @param line_provider (\emph{String} optional): Select Line Provider - Caesars, consensus, numberfire, or teamrankings
#'
#' @return Betting information for games with the following columns:
#' \describe{
#' \item{\code{game_id}}{integer. Unique game identifier - `game_id`.}
#' \item{\code{season}}{integer. Season parameter.}
#' \item{\code{season_type}}{character. Season Type (regular, postseason, both).}
#' \item{\code{week}}{integer. Week, values from 1-15, 1-14 for seasons pre-playoff (i.e. 2013 or earlier).}
#' \item{\code{home_team}}{character. Home D-I Team.}
#' \item{\code{home_conference}}{character. Home D-I Conference.}
#' \item{\code{home_score}}{integer. Home Score.}
#' \item{\code{away_team}}{character. Away D-I Team.}
#' \item{\code{away_conference}}{character. Away D-I Conference.}
#' \item{\code{away_score}}{integer. Away Score.}
#' \item{\code{provider}}{character. Line provider.}
#' \item{\code{spread}}{character. Spread for the game.}
#' \item{\code{formatted_spread}}{character. Formatted spread for the game.}
#' \item{\code{over_under}}{character. Over/Under for the game.}
#' }
#' @source \url{https://api.collegefootballdata.com/lines}
#' @keywords Betting Lines
#' @importFrom jsonlite fromJSON
#' @importFrom httr GET
#' @importFrom utils URLencode
#' @importFrom assertthat assert_that
#' @importFrom janitor clean_names
#' @importFrom glue glue
#' @importFrom purrr map_if
#' @importFrom dplyr filter as_tibble rename
#' @importFrom tidyr unnest
#' @export
#' @examples
#'
#' cfb_betting_lines(year = 2018, week = 12, team = 'Florida State')
#'
#' #7 OTs LSU at TAMU
#' cfb_betting_lines(year = 2018, week = 13, team = "Texas A&M", conference = 'SEC')
#'
cfb_betting_lines <- function(game_id = NULL,
year = NULL,
week = NULL,
season_type = 'regular',
team = NULL,
home_team = NULL,
away_team = NULL,
conference = NULL,
line_provider = NULL) {
if(!is.null(game_id)){
# Check if game_id is numeric, if not NULL
assertthat::assert_that(is.numeric(game_id),
msg = 'Enter valid game_id (numeric value)')
}
if(!is.null(year)){
# Check if year is numeric, if not NULL
assertthat::assert_that(is.numeric(year) & nchar(year) == 4,
msg = 'Enter valid year as a number (YYYY)')
}
if(!is.null(week)){
# Check if week is numeric, if not NULL
assertthat::assert_that(is.numeric(week) & nchar(week) <= 2,
msg = 'Enter valid week 1-15\n(14 for seasons pre-playoff, i.e. 2014 or earlier)')
}
if(season_type != 'regular'){
# Check if season_type is appropriate, if not regular
assertthat::assert_that(season_type %in% c('postseason'),
msg = 'Enter valid season_type: regular or postseason')
}
if(!is.null(team)){
if(team == "San Jose State"){
team = utils::URLencode(paste0("San Jos","\u00e9", " State"), reserved = TRUE)
} else{
# Encode team parameter for URL if not NULL
team = utils::URLencode(team, reserved = TRUE)
}
}
if(!is.null(home_team)){
# Encode home_team parameter for URL, if not NULL
home_team = utils::URLencode(home_team, reserved = TRUE)
}
if(!is.null(away_team)){
# Encode away_team parameter for URL, if not NULL
away_team = utils::URLencode(away_team, reserved = TRUE)
}
if(!is.null(conference)){
# # Check conference parameter in conference abbreviations, if not NULL
# assertthat::assert_that(conference %in% cfbscrapR::cfb_conf_types_df$abbreviation,
# msg = "Incorrect conference abbreviation, potential misspelling.\nConference abbreviations P5: ACC, B12, B1G, SEC, PAC\nConference abbreviations G5 and Independents: CUSA, MAC, MWC, Ind, SBC, AAC")
# Encode conference parameter for URL, if not NULL
conference = utils::URLencode(conference, reserved = TRUE)
}
if(!is.null(line_provider)){
# Check line_provider parameter is a valid entry
assertthat::assert_that(line_provider %in% c("Caesars", "consensus", "numberfire", "teamrankings"),
msg = "Enter valid line provider: Caesars, consensus, numberfire, or teamrankings")
}
base_url <- "https://api.collegefootballdata.com/lines?"
full_url <- paste0(base_url,
"gameId=", game_id,
"&year=", year,
"&week=", week,
"&seasonType=", season_type,
"&team=", team,
"&home=", home_team,
"&away=", away_team,
"&conference=", conference)
# Check for internet
check_internet()
# Create the GET request and set response as res
res <- httr::GET(full_url)
# Check the result
check_status(res)
df <- data.frame()
tryCatch(
expr = {
# Get the content and return it as data.frame
df = jsonlite::fromJSON(full_url, flatten = TRUE) %>%
purrr::map_if(is.data.frame, list) %>%
dplyr::as_tibble() %>%
tidyr::unnest(.data$lines)
if(!is.null(line_provider)){
if(is.list(df) & length(df)==0){
df <- data.frame(game_id = game_id, spread = 0, formatted_spread = "home 0")
}
else if(!is.null(df$provider)){
df <- df %>%
dplyr::filter(.data$provider == line_provider) %>%
janitor::clean_names() %>%
dplyr::rename(game_id = .data$id) %>%
as.data.frame()
}
else{
df <- data.frame(game_id = game_id, spread = 0, formatted_spread = "home 0")
}
}
if(is.list(df) & length(df) == 0){
df <- data.frame(game_id = game_id, spread = 0, formatted_spread = "home 0")
}else{
df <- df %>%
janitor::clean_names() %>%
dplyr::rename(game_id = .data$id) %>%
as.data.frame()
}
},
error = function(e) {
},
warning = function(w) {
},
finally = {
}
)
return(df)
}
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