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;; Tekuti
;; Copyright (C) 2008, 2010, 2011, 2012 Andy Wingo <wingo at pobox dot com>
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation; either version 3 of
;; the License, or (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program; if not, contact:
;;
;; Free Software Foundation Voice: +1-617-542-5942
;; 59 Temple Place - Suite 330 Fax: +1-617-542-2652
;; Boston, MA 02111-1307, USA gnu@gnu.org
;;; Commentary:
;;
;; This is the main script that will launch tekuti.
;;
;;; Code:
(define-module (tekuti web)
#:use-module (web server)
#:use-module (tekuti cache)
#:use-module (tekuti request)
#:use-module (tekuti index)
#:use-module (tekuti page)
#:use-module (tekuti config)
#:export (main-loop))
(define (choose-handler request)
(request-path-case
request
((GET admin) page-admin)
((GET admin posts) page-admin-posts)
((GET admin posts post-key!) page-admin-post)
((POST admin new-post) page-admin-new-post)
;; would be fine to have e.g. (DELETE admin posts posts-key!), but
;; web browsers don't handle that
((POST admin delete-post post-key!) page-admin-delete-post)
((POST admin modify-post post-key!) page-admin-modify-post)
((POST admin delete-comment post-key! comment-id!) page-admin-delete-comment)
((GET admin changes) page-admin-changes)
((GET admin changes sha1!) page-admin-change)
((POST admin revert-change sha1!) page-admin-revert-change)
((GET) page-index)
((GET archives year? month? day?) page-archives)
((GET archives year! month! day! post!) page-show-post)
((POST archives year! month! day! post!) page-new-comment)
((GET feed) page-feed-atom)
((GET feed atom) page-feed-atom)
((POST search) page-search)
((GET tags) page-show-tags)
((GET tags tag!) page-show-tag)
((GET debug) page-debug)
(else page-not-found)))
(define (cache-ref index request)
(cached-response-and-body (assq-ref index 'cache) request))
(define (cache-set index request response body)
(update-index
(maybe-reindex index)
'cache
(lambda (index)
(update-cache (assq-ref index 'cache) request response body))))
(define (handler request body index)
(let ((index (maybe-reindex index)))
(cond
((cache-ref index request)
=> (lambda (cached)
(values (car cached) (cdr cached) index)))
(else
(call-with-values (lambda ()
((choose-handler request) request body index))
(lambda (response body)
(call-with-values (lambda ()
(sanitize-response request response body))
(lambda (response body)
(let ((index (cache-set index request response body)))
(values response body index))))))))))
;; The seemingly useless lambda is to allow for `handler' to be
;; redefined at runtime.
(define (main-loop)
(run-server (lambda (r b i) (handler r b i))
*server-impl*
(if (list? *server-impl-args*)
*server-impl-args*
(*server-impl-args*))
(read-index)))
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