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;; Tekuti
;; Copyright (C) 2008 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:
;;
;; Helper bits, mostly verbose-like SXML stuff.
;;
;;; Code:
(define-module (tekuti page-helpers)
#:use-module (tekuti config)
#:use-module (tekuti util)
#:use-module (tekuti git)
#:use-module (tekuti post)
#:use-module (tekuti comment)
#:use-module (tekuti url)
#:use-module (tekuti request)
#:use-module (srfi srfi-19)
#:use-module (scheme kwargs)
#:export (relurl rellink
published-posts
post-editing-form
sidebar-ul main-sidebar tag-cloud
post-link admin-post-link
show-post
atom-header atom-entry))
(define (relurl . paths)
(apply string-append *public-url-base* paths))
(define (rellink path . body)
`(a (@ (href ,(relurl path)))
,@body))
(define (published-posts index n)
(filter-mapn (lambda (post)
(and (post-published? post) post))
(assq-ref index 'posts)
n))
(define (post-editing-form post)
`(form (@ (method "POST")
(action ,(relurl (if post
(string-append "admin/modify-post/"
(url:encode (post-key post)))
"admin/new-post"))))
(p "title: "
(input (@ (name "title") (type "text")
(value ,(if post (post-title post) "")))))
(div (textarea (@ (name "body") (rows "20") (cols "80"))
,(if post (post-raw-content post) "")))
(input (@ (type "submit")
(value ,(if post "edit post" "new post"))))))
(define (sidebar-ul body)
`(div (@ (id "menu"))
(ul ,@body)))
;; double-encoding is a hack to trick apache
(define (admin-post-link post)
(rellink (string-append "admin/posts/" (url:encode (post-key post)))
(post-title 'title)))
(define (post-url post . tail)
(apply relurl "archives/" (url:decode (post-key post)) tail))
(define (post-link post . tail)
`(a (@ (href ,(apply post-url post tail))) ,(post-title post)))
(define (comment-form post author email url comment)
`(form
(@ (action ,(post-url post)) (method "POST"))
(p (input (@ (type "text") (name "author") (value ,author)
(size "22") (tabindex "1")))
" " (label (@ (for "author")) (small "Name")))
(p (input (@ (type "text") (name "email") (value ,email)
(size "22") (tabindex "2")))
" " (label (@ (for "email")) (small "Mail (will not be published)")))
(p (input (@ (type "text") (name "url") (value ,url)
(size "22") (tabindex "3")))
" " (label (@ (for "url")) (small "Website")))
;(p (small "allowed tags: "))
(p (textarea (@ (name "comment") (id "comment") (cols "65")
(rows "10") (tabindex "4"))
,comment))
(p (input (@ (name "submit") (type "submit") (id "submit") (tabindex "5")
(value "Submit Comment"))))))
(define (post-sxml-comments post)
(let ((comments (post-comments post))
(comments-open? (post-comments-open? post)))
(define (n-comments-header)
(and (or (not (null? comments)) comments-open?)
`(h3 (@ (id "comments"))
,(let ((len (length comments)))
(case len
((0) "No responses")
((1) "One response")
(else (format #f "~d responses" len)))))))
`(div
,@(or (and=> (n-comments-header) list) '())
,@(let ((l (map comment-sxml-content comments)))
(if (null? l) l
`((ol (@ (class "commentlist")) ,@l))))
,(if (not comments-open?)
`(p (@ (id "nocomments")) "Comments are closed.")
`(div (h3 "Leave a Reply")
,(comment-form post "" "" "" ""))))))
(define (tag-link tagname)
(rellink (string-append "tags/" (url:encode tagname))
tagname))
(define (show-post post comments?)
`((h2 (@ (class "storytitle"))
,(post-link post))
(div (@ (class "post"))
(h3 (@ (class "meta"))
,(post-readable-date post)
" (" ,@(list-intersperse
(map tag-link (post-tags post))
" | ")
")")
(div (@ (class "storycontent"))
,(post-sxml-content post))
,@(if comments?
'()
`((div (@ (class "feedback"))
(a (@ (href ,(post-url post "#comments")))
"(" ,(post-n-comments post) ")")))))
,@(if comments?
(list (post-sxml-comments post))
'())))
;; fixme: borks in the no-tags case; ugly code
(define (tag-cloud index)
(define (determine-sizes counts)
(let ((maxcount (apply max counts)))
(map (lambda (x)
(floor (+ 80 (* 120 (/ x maxcount)))))
counts)))
(let* ((hash (assq-ref index 'tags))
(cats (if hash
(hash-fold (lambda (k v seed) (acons k (length v) seed))
'() hash)
'()))
(top-20 (dsu-sort (take-max (dsu-sort cats cdr >) 20)
car string<?)))
`(ul (li (@ (style "line-height: 150%"))
,@(list-intersperse
(map (lambda (name size)
`(a (@ (href ,(relurl "tags/" (url:encode name)))
(rel "tag")
(style ,(format #f "font-size: ~d%" size)))
,name))
(map car top-20)
(determine-sizes (map cdr top-20)))
" "))
)))
(define (main-sidebar request index)
(sidebar-ul
`((li (h2 (a (@ (href ,(relurl "feed/atom")))
"subscribe "
(img (@ (src ,(relurl "wp-content/feed-icon-14x14.png"))
(alt "subscribe to this feed")))
)))
(li (h2 "tags " ,(rellink "tags/" ">>"))
,(tag-cloud index)))))
(define (atom-header server-name last-modified)
(define (relurl tail)
(string-append "http://" server-name *public-url-base* tail))
`(feed
(@ (xmlns "http://www.w3.org/2005/Atom") (xml:base ,(relurl "")))
(title (@ (type "text")) ,*title*)
(subtitle (@ (type "text")) ,*subtitle*)
(updated ,(timestamp->atom-date last-modified))
(generator (@ (uri "http://wingolog.org/software/tekuti")
(version "what"))
"tekuti")
(link (@ (rel "alternate") (type "text/html")
(href ,(relurl ""))))
(id ,(relurl "feed/atom"))
(link (@ (rel "self") (type "application/atom+xml")
(href ,(relurl "feed/atom"))))))
(define (atom-entry server-name post)
(define (relurl . tail)
(apply string-append "http://" server-name *public-url-base* tail))
`(entry
(author (name ,*name*) (uri ,(relurl "")))
(title (@ (type "text")) ,(post-title post))
(id ,(relurl (url:decode (post-key post)))) ;hack -- should include archives...
(link (@ (rel "alternate") (type "text/html")
(href ,(relurl "archives/" (url:decode (post-key post))))))
(published ,(timestamp->atom-date (post-timestamp post)))
(updated ,(timestamp->atom-date (post-timestamp post)))
(content (@ (type "xhtml"))
(div (@ (xmlns "http://www.w3.org/1999/xhtml"))
,(post-sxml-content post)))))
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