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;; clog -- Supposedly simplistic blogging in Common Lisp
;; Copyright (C) 2013 Tom Willemse
;; clog is free software: you can redistribute it and/or modify
;; it under the terms of the GNU Affero General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; clog 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 Affero General Public License for more details.
;; You should have received a copy of the GNU Affero General Public License
;; along with clog. If not, see <http://www.gnu.org/licenses/>.
(in-package :clog)
(defclass clog (<app>) ())
(defvar *app* (make-instance 'clog))
(defmethod call ((this clog) env)
(prepare-tables)
(call-next-method))
(defun make-tpl-parameters (&rest args)
(append (list :prefix (script-name *request*)) args))
(defun post-tags (post)
(query (:select 'tag.* :from 'tag
:inner-join 'post-tag
:on (:and (:= 'id 'tag_id)
(:= 'post_id (post-id post))))
(:dao tag)))
(defun post-comments (post)
(query (:order-by
(:select :* :from 'post
:where (:and (:= 'type "comment")
(:= 'parent (post-id post))))
'timestamp)
(:dao post)))
(defun tag-posts (tag)
(query (:order-by
(:select 'post.* :from 'post
:inner-join 'post-tag
:on (:and (:= 'id 'post_id)
(:= 'tag_id (tag-id tag))))
'timestamp)
(:dao post)))
(defun page-posts (page)
(query (:order-by
(:select :* :from 'post
:where (:and (:= 'parent (post-id page))
(:= 'type "blog")))
'timestamp)
(:dao post)))
(defun comment-comments (comment)
(query (:order-by
(:select :* :from 'post
:where (:and (:= 'parent (post-id comment))
(:= 'type "comment")))
'timestamp)
(:dao post)))
(defun timestamp->string (ts)
(multiple-value-bind (year month day hour minute second)
(decode-timestamp ts)
(format nil "~2,'0d-~2,'0d-~d ~2,'0d:~2,'0d:~2,'0d"
day month year hour minute second)))
(defun post-params (post)
(list :title (post-title post)
:timestamp (timestamp->string (post-time post))
:slug (post-slug post)))
(defun render-post (post &key (lvl 2) (content-render 'post-content))
(clog-templates:post
(append (post-params post)
(make-tpl-parameters
:content (funcall content-render post)
:tags (mapcar #'render-tag (post-tags post))
:lvl lvl
:type "posts"
:author (post-author-name post)))))
(defun render-tag (tag)
(clog-templates:tag
(make-tpl-parameters :name (tag-name tag) :slug (tag-slug tag))))
(defun render-page (page)
(clog-templates:post
(append (post-params page)
(make-tpl-parameters
:content (apply 'concatenate 'string (post-content page)
(mapcar #'(lambda (post)
(render-post post :lvl 3))
(page-posts page)))
:tags (mapcar #'render-tag (post-tags page))
:lvl 2
:type "pages"))))
(defun render-comment (comment)
(clog-templates:comment
(make-tpl-parameters
:comment (post-content comment)
:timestamp (timestamp->string (post-time comment))
:author (post-author-name comment)
:md5 (post-author-md5 comment)
:comments (mapcar #'render-comment
(comment-comments comment)))))
(defun get-posts (&key (type "blog") (parent-id :NULL))
(query (:order-by
(:select :* :from 'post
:where (:and (:= 'type type)
(:or (:and (:is-null parent-id)
(:is-null 'parent))
(:= 'parent parent-id))))
(:desc 'timestamp))
(:dao post)))
(defun get-post (slug &key (type "blog"))
(query (:select :* :from 'post
:where (:and (:= 'slug slug)
(:= 'type type)))
(:dao post :single)))
(defun get-tag (slug)
(query (:select :* :from 'tag :where (:= 'slug slug))
(:dao tag :single)))
(defun post-list-page ()
(clog-templates:main
(make-tpl-parameters
:content (clog-templates:list
(make-tpl-parameters
:posts (mapcar #'render-post (get-posts)))))))
(defun post-page (slug)
(let ((post (get-post slug)))
(list (if post 200 404)
'(:content-type "text/html")
(clog-templates:main
(make-tpl-parameters
:content (if post
(clog-templates:single
(make-tpl-parameters
:post (render-post post)
:comments (mapcar #'render-comment
(post-comments post))))
"No such post"))))))
(defun tag-page (slug)
(let ((tag (get-tag slug)))
(list (if tag 200 404)
'(:content-type "text/html")
(clog-templates:main
(make-tpl-parameters
:content
(if tag
(clog-templates:list
(make-tpl-parameters
:posts (mapcar #'render-post (tag-posts tag))))
"No such tag"))))))
(defun page-page (slug)
(let ((page (get-post slug :type "page")))
(list (if page 200 404)
'(:content-type "text/html")
(clog-templates:main
(make-tpl-parameters
:content
(if page
(clog-templates:single
(make-tpl-parameters
:post (render-page page)
:comments (mapcar #'render-comment
(post-comments page))))
"No such page"))))))
(setf (route *app* "/") (lambda (params) (post-list-page)))
(setf (route *app* "/posts/:slug")
(lambda (params) (post-page (getf params :slug))))
(setf (route *app* "/tags/:slug")
(lambda (params) (tag-page (getf params :slug))))
(setf (route *app* "/pages/:slug")
(lambda (params) (page-page (getf params :slug))))
(setf (route *app* "/login" :method :POST)
#'(lambda (params)
(if (authorize (getf params :|username|)
(getf params :|password|))
"Authorized!"
"Failed...Try again.")))
(setf (route *app* "/hello/:name")
#'(lambda (params)
(format nil "Hello, ~A" (getf params :name))))
(setf (route *app* "/say/*/to/*")
#'(lambda (params)
;; matches /say/hello/to/world
(format nil "~S" (getf params :splat))))
(setf (route *app* "/download/*.*")
#'(lambda (params)
;; matches /download/path/to/file.xml
(format nil "~S" (getf params :splat))))
(defun get-app ()
(clack.builder:builder
(<clack-middleware-static> :path "/static/" :root "static/")
(<clack-middleware-postmodern>
:database *dbname* :user *dbuser* :password *dbpass* :host *dbhost*)
clack.middleware.session:<clack-middleware-session>
*app*))
;; (defparameter *urlmap* (make-instance '<clack-app-urlmap>))
;; (mount *urlmap* "/clog/" (get-app))
;; (defvar *handler*
;; (clackup *urlmap* :port 5004))
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