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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:
;;
;; This is the main script that will launch tekuti.
;;
;;; Code:
(define-module (tekuti post)
#:use-module (srfi srfi-1)
#:use-module (match-bind)
#:use-module (tekuti util)
#:use-module (tekuti url)
#:use-module (tekuti comment)
#:use-module (tekuti config)
#:use-module (tekuti git)
#:use-module (tekuti filters)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-19)
#:export (reindex-posts post-from-tree post-from-key post-tags
post-timestamp post-key
post-sxml-content post-raw-content all-published-posts
post-readable-date post-tag-links post-sxml-n-comments
post-sxml-comments))
;; introducing new assumption: post urls like yyyy/dd/mm/post; post dirnames the urlencoded post
;; perhaps push this processing into post-from-tree
(define (post-published? post-alist)
(equal? (assq-ref post-alist 'status) "publish"))
(define (post-timestamp post-alist)
(assq-ref post-alist 'timestamp))
(define (post-tags post-alist)
(or (assq-ref post-alist 'tags) '()))
(define (post-key post)
(assq-ref post 'key))
(define *post-spec*
`((timestamp . ,string->number)
(tags . ,(lambda (v) (map string-trim-both (string-split v #\,))))
(title . ,identity)))
(define (post-from-tree encoded-name sha1)
(acons 'key encoded-name
(acons 'sha1 sha1
(parse-metadata (string-append sha1 ":metadata")
*post-spec*))))
(define (post-raw-content post)
(git "show" (string-append (assq-ref post 'sha1) ":content")))
(define (post-sxml-content post)
(let ((format (or (assq-ref post 'format) 'wordpress)))
((case format
((wordpress) wordpress->sxml)
(else (lambda (text) `(pre ,text))))
(post-raw-content post))))
(define (post-readable-date post)
(let ((date (time-utc->date
(make-time time-utc 0 (assq-ref post 'timestamp)))))
(date->string date "~e ~B ~Y ~l:~M ~p")))
;; hack :-/
(define (tag-link tagname)
`(a (@ (href ,(string-append *public-url-base* "tags/"
(url:encode tagname))))
,tagname))
(define (post-tag-links post)
(map tag-link (post-tags post)))
(define (post-from-key master key)
(let ((pairs (git-ls-subdirs master key)))
(and (= (length pairs) 1)
(post-from-tree key (cdar pairs)))))
(define (all-posts master)
(map (lambda (pair)
(post-from-tree (car pair) (cdr pair)))
(git-ls-subdirs master #f)))
(define (all-published-posts master)
(dsu-sort
(filter post-published? (all-posts master))
post-timestamp
>))
(define (post-comments post)
(dsu-sort
(map (lambda (pair)
(comment-from-object (car pair) (cadr pair)))
(git-ls-tree (string-append (assq-ref post 'sha1) ":comments") #f))
comment-timestamp
<))
(define (comment-form post author email url comment)
`(form
(@ (action ,(string-append *public-url-base* "archives/"
(url:decode (assq-ref post 'key))))
(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))
(comment-status (assq-ref post 'comment_status)))
(define (n-comments-header)
(and (or (not (null? comments)) (equal? comment-status "open"))
`(h3 (@ (id "comments"))
,(let ((len (length comments)))
(case len
((0) "No responses")
((1) "One response")
(else (format #f "~d responses" len)))))))
(define (show-comment comment)
`(li (@ (class "alt") (id ,(assq-ref comment 'key)))
(cite ,(let ((url (assq-ref comment 'author_url))
(name (assq-ref comment 'author)))
(if (and url (not (string-null? url)))
`(a (@ (href ,url) (rel "external nofollow")) ,name)
name)))
" says:" (br)
(small (@ (class "commentmetadata"))
(a (@ (href ,(string-append "#" (assq-ref comment 'key))))
,(comment-readable-date comment)))
,(comment-sxml-content comment)))
`(div
,@(or (and=> (n-comments-header) list) '())
,@(let ((l (map show-comment comments)))
(if (null? l) l
`((ol (@ (class "commentlist")) ,@l))))
,(if (equal? comment-status "closed")
`(p (@ (id "nocomments")) "Comments are closed.")
`(div (h3 "Leave a Reply")
,(comment-form post "" "" "" ""))))))
(define (post-n-comments post)
(length (git-ls-tree (string-append (assq-ref post 'sha1) ":comments") #f)))
(define (post-sxml-n-comments post)
`(div (@ (class "feedback"))
(a (@ (href ,(string-append *public-url-base* "archives/"
(url:decode (assq-ref post 'key))
"#comments")))
"(" ,(post-n-comments post) ")")))
(define (hash-fill proc list)
(let ((table (make-hash-table)))
(for-each (lambda (x) (proc x table))
list)
table))
(define (reindex-posts oldindex newindex)
(let ((old (hash-fill (lambda (post h)
(hash-set! h (assq-ref post 'sha1) post))
(or (assq-ref oldindex 'posts) '()))))
(dsu-sort (map (lambda (dent)
(or (hash-ref old (cadr dent))
(begin (pk 'updated dent)
(post-from-tree (car dent) (cadr dent)))))
(git-ls-tree (assq-ref newindex 'master) #f))
post-timestamp
>)))
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