;;; load.scm - a scheme web spidering script
;;;
;;; Copyright (c) 2012 Johan Ceuppens
;;;
;;; All rights reserved.
;;;
;;; Redistribution and use in source and binary forms, with or without
;;; modification, are permitted provided that the following conditions
;;; are met:
;;; 1. Redistributions of source code must retain the above copyright
;;;    notice, this list of conditions and the following disclaimer.
;;; 2. Redistributions in binary form must reproduce the above copyright
;;;    notice, this list of conditions and the following disclaimer in the
;;;    documentation and/or other materials provided with the distribution.
;;; 3. The name of the authors may not be used to endorse or promote products
;;;    derived from this software without specific prior written permission.
;;;
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
;;; IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
;;; OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
;;; IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
;;; INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
;;; NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
;;; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
;;; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
;;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
;;; THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

(load "client.scm")

(display "give hostname name : ")
(define hostname (symbol->string (read)))
(newline)
(display "server name = ")(display hostname)
(newline)
(display "give port : ")
(define port (number->string (read)))
(newline)
;;(define dir-filename (ask-server (string-append "GET / HTTP/1.0" (string #\return #\newline #\return #\newline)) "index.html" hostname port))

(display "give string to search for (no spaces): ")
(define keyword (symbol->string (read)))
(newline)

(define table (make-hash-table HASHTABLESIZE))

(spider-f)

(define (spider-f)
  (spider-rec (list hostname) 0))

(define (spider-rec hostname-list index)
  (let ((url-list (file-contents->url file-contents 0)))
    (let ((dir-filename (ask-server (string-append "GET / HTTP/1.0" (string #\return #\newline #\return #\newline)) "index.html" hostname port)))
      (let ((file-contents (file->string (string-append dir-filename "/" "index.html")))
            (hostname-list (append hostname-list (url->hostname url-list '())))
            (keyword-list (file-contents->keyword file-contents keyword)))

        (hash-set! table (string-append keyword (number->string index)) file-contents);;NOTE keys are variable due to append above
      (spider-rec (cdr hostname-list) (+ index 1))
      ))))