; -*-scheme-*-

(define (file-to-strings file-name)
  
  (if (not (file-exists? file-name))
      '()
      (call-with-input-file file-name
	(lambda (port)

	  (let loop ((l (read-line port))
		     (string-list '()))
	    (cond
	     ((eof-object? l) (reverse string-list))
     (else 
	      (loop (read-line port) (cons l string-list)))))))))

;;
(define pump-file
  (lambda (port file) 
    
    (let ((ls (file-to-strings file)))
      
      (let loop ((ls ls))
	(cond
	 ((null? ls) '())
	 (else 
	  (display (car ls) port)
	  (display (car ls))
	  (newline port)
	  (newline)
	  (loop (cdr ls))))))))


(define connection-proc
  (lambda (socket socket-address)

    (define end-transmition-string "; end transmition")    

    (define end-transmition
      (lambda ()
	(format (socket:outport socket) "~a" end-transmition-string)))

    ;; main body
    (format #t "################ Got a connection!~%")

;     (format #t "socket details: family ~s inport ~s outport ~s~%"
; 	    (socket:family socket)
; 	    (socket:inport socket)
; 	    (socket:outport socket))

    (let loop ((count 0))
      (let ((line (read-line (socket:inport socket))))

 	(format (socket:outport socket) "(newline)")
	(end-transmition)

 	(format (socket:outport socket) "(read-pdb \"monomer-ACT.pdb\")")
	(end-transmition)

	;; more
  	(format (socket:outport socket)
  		"(let ((imol (read-pdb \"monomer-PIN.pdb\")))
                      (set-rotation-centre 5 5 5)
                      (move-molecule-to-screen-centre imol)
                     '())")
	(newline (socket:outport socket))
	(end-transmition)

        (format #t "########### sending a display time\n")
	(format (socket:outport socket)
		"(display (localtime (current-time)))")
	(format (socket:outport socket) "(newline)")
	(newline (socket:outport socket))
        (format #t "########### done sent a display time\n")
	(end-transmition)
	
;	;; wait for char happens...
;        (format #t "########### sending numbers\n")
;	(format (socket:outport socket)
; 		";; 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16")
;	(newline (socket:outport socket))
;        (format #t "########### done sent numbers\n")
;	(end-transmition)
	
        (format #t "########### sending spin\n")
 	(format (socket:outport socket)
 		"(spin-zoom-trans 2 400 0.2 0.4 0 0 0)")
	(newline (socket:outport socket))
        (format #t "########### done sent spin\n")
	(end-transmition)

 	(format (socket:outport socket)
 		"(rotate-y-scene 700 0.15)")
	(newline (socket:outport socket))
	(end-transmition)

		  
	(loop (+ count 1))))))

;; 
(define (create-server-socket port)
  (bind-listen-accept-loop protocol-family/internet
			   connection-proc port))

;; 
(create-server-socket 12345)