(define-module (dolcon ui))

(export dc-connect dc-disconnect dc-connected dc-select dc-getresp dc-extract dc-intresp dc-qcmd dc-loginasync dc-lexsexpr)

(load-extension "libdolcon-guile" "init_guiledc")

(define-public dc-login
  (lambda (useauthless . username)
    (let ((done #f) (errsym #f))
      (dc-loginasync
       (lambda (err reason)
	 (set! errsym err)
	 (set! done #t))
       useauthless (if (pair? username) (car username) #f))
      (while (not done) (dc-select))
      errsym)))

(define-public dc-must-connect
  (lambda args
    (let* ((fd (apply dc-connect args)) (resp (dc-extract (do ((resp (dc-getresp) (dc-getresp)))
				((and resp
				      (equal? (cdr (assoc 'cmd (dc-extract resp))) ".connect"))
				 resp)
			      (dc-select)))))
      (if (= (cdr (assoc 'code resp)) 200)
	  fd
	  (throw 'bad-return (cdr (assoc 'code resp)) (cadr (assoc 'resp resp)))
	  )
      )
    )
  )

(define-public dc-c&l
  (lambda (verbose host useauthless)
    (let ((fd -1) (print (lambda (obj) (if verbose (display obj (if (port? verbose) verbose (current-error-port)))))))
      (print "connecting...\n")
      (set! fd (dc-must-connect host))
      (print "authenticating...\n")
      (let ((ret (dc-login useauthless)))
	(if (not (eq? ret 'success))
	    (throw 'login-failure ret)))
      (print "authentication success\n")
      fd)
    )
  )

(define-public dc-ecmd
  (lambda args
    (let ((tag (dc-qcmd args)))
      (do ((resp (dc-getresp tag) (dc-getresp tag)))
	  (resp resp)
	(dc-select))
      )
    )
  )

(define-public dc-ecmd-assert
  (lambda (code . args)
    (let* ((resp (apply dc-ecmd args)) (eresp (dc-extract resp)))
      (if (not (if (list? code)
		   (memq (cdr (assoc 'code eresp)) code)
		   (= (cdr (assoc 'code eresp)) code)))
	  (throw 'bad-return (cdr (assoc 'code eresp)) (cadr (assoc 'resp eresp)))
	  )
      resp
      )
    )
  )

(define-public dc-intall
  (lambda (resp)
    (let ((retlist '()))
      (do ((ires (dc-intresp resp) (dc-intresp resp))) ((not ires) retlist)
	(set! retlist (append retlist (list ires)))))))