(module utils racket/base

  (require racket/path
           racket/runtime-path
           ffi/unsafe
           setup/dirs
           "downloader.rkt"
           simple-log
           )
  
  (provide while
           until
           build-lib-path
           get-lib
           do-for
           dbg-sound
           info-sound
           err-sound
           warn-sound
           fatal-sound
           )

  (sl-def-log racket-sound (current-logger) sound)

  (define-syntax while
    (syntax-rules ()
      ((_ cond body ...)
       (letrec ((while-f (lambda (last-result)
                           (if cond
                               (let ((last-result (begin
                                                    body
                                                    ...)))
                                 (while-f last-result))
                               last-result))))
         (while-f #f))
       )
      ))

  (define-syntax until
    (syntax-rules ()
      ((_ cond body ...)
       (letrec ((until-f (lambda (last-result)
                           (if cond
                               last-result
                               (let ((last-reult (begin
                                                   body
                                                   ...)))
                                 (until-f last-result))))))
         (until-f #f)))))

  (define-syntax do-for
    (syntax-rules ()
      ((_ (init cond next) body ...)
       (begin
         init
         (letrec ((do-for-f (lamba ()
                                   (if cond
                                       (begin
                                         (begin
                                           body
                                           ...)
                                         next
                                         (do-for-f))))))
           (do-for-f))))))


  (define (build-lib-path)
    (soundlibs-directory))

  (define (get-lib* libs-to-try orig-libs versions)
    (unless (soundlibs-available?)
      (download-soundlibs))
    (if (null? libs-to-try)
        (begin
          (displayln (format "Warning: Cannot find library, tried ~a" orig-libs))
          #f)
        (ffi-lib (car libs-to-try) versions
                 #:get-lib-dirs (λ () (cons (build-lib-path) (get-lib-search-dirs)))
                 #:fail (λ () (get-lib* (cdr libs-to-try) orig-libs versions))
                 )))

  (define (get-lib libs-to-try versions)
    (get-lib* libs-to-try libs-to-try versions))
  
) ; end of module