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#' Progression Handler: Progress Reported as 'beepr' Sounds (Audio)
#'
#' A progression handler for [beepr::beep()].
#'
#' @inheritParams make_progression_handler
#'
#' @param initiate,update,finish,interrupt (integer) Indices of [beepr::beep()]
#' sounds to play when progress starts, is updated, completes, or is
#' interrupted. For silence, use `NA_integer_`.
#'
#' @param \ldots Additional arguments passed to [make_progression_handler()].
#'
#' @example incl/handler_beepr.R
#'
#' @section Requirements:
#' This progression handler requires the \pkg{beepr} package.
#'
#' @export
handler_beepr <- function(initiate = 2L, update = 10L, finish = 11L, interrupt = 9L, intrusiveness = getOption("progressr.intrusiveness.audio", 5.0), target = "audio", ...) {
## Used for package testing purposes only when we want to perform
## everything except the last part where the backend is called
if (!is_fake("handler_beepr")) {
beepr_beep <- beepr::beep
} else {
beepr_beep <- function(sound, expr) NULL
}
beep <- function(sound) {
## Silence?
if (is.na(sound)) return()
beepr_beep(sound)
}
## Reporter state
reporter <- local({
list(
initiate = function(config, state, progression, ...) {
if (!state$enabled || config$times == 1L) return()
beep(initiate)
},
interrupt = function(config, state, progression, ...) {
beep(interrupt)
},
update = function(config, state, progression, ...) {
if (!state$enabled || progression$amount == 0 || config$times <= 2L) return()
beep(update)
},
finish = function(config, state, progression, ...) {
if (!state$enabled) return()
beep(finish)
}
)
})
make_progression_handler("beepr", reporter, intrusiveness = intrusiveness, target = target, ...)
}
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