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;;; scrumelo.el --- Scrum with elnode and org-mode
;; Copyright (C) 2013 Tom Willemse
;; Author: Tom Willemse <tom@ryuslash.org>
;; Keywords: tools, hypermedia, outlines, comm
;;; Commentary:
;; A scrum web app.
(require 'elnode)
(require 'esxml)
(require 'org)
;;; Code:
(defvar scrumelo-project-file "~/projects/scrumelo/aeos.org"
"The file containing the scrum backlog.")
(defvar scrumelo--base-dir
(if load-file-name
(file-name-directory load-file-name)
default-directory)
"The current directory.")
(defvar scrumelo-bootstrap-css-location
"http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.no-icons.min.css"
"The location of the twitter bootstrap CSS file.")
(defvar scrumelo-bootstrap-js-location
"http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"
"The location of the twitter bootstrap JS file.")
(defvar scrumelo-font-awesome-css-location
"http://netdna.bootstrapcdn.com/font-awesome/3.1.1/css/font-awesome.min.css"
"The location of the font awesome CSS file.")
(defvar scrumelo-jquery-js-location
"http://code.jquery.com/jquery-2.0.0.min.js"
"The location of the jQuery JS file.")
(defmacro with-scrumelo-http-params (params httpcon &rest body)
"Bind parameters PARAMS from HTTPCON and execute BODY."
`(let (,@(mapcar (lambda (p)
`(,p (elnode-http-param ,httpcon ,(symbol-name p))))
params))
,@body))
(put 'with-scrumelo-http-params 'lisp-indent-function 2)
(defun scrumelo--css (href)
"Return a link pointing to HREF."
`(link (@ (href ,href) (rel "stylesheet") (type "text/css"))))
(defun scrumelo--css-list ()
"Return a list of all required CSS files."
(list (scrumelo--css scrumelo-bootstrap-css-location)
(scrumelo--css scrumelo-font-awesome-css-location)))
(defun scrumelo--js (src)
"Return a script sourcing SRC."
`(script (@ (src ,src) (language "JavaScript")
(type "text/javascript")) ""))
(defun scrumelo--js-list ()
"Return a list of all required JS files."
(list (scrumelo--js scrumelo-bootstrap-js-location)
(scrumelo--js scrumelo-jquery-js-location)
(scrumelo--js "js/scrumelo.js")))
(defun scrumelo--story ()
"Return a description of the current org heading as a scrum story."
(format "As a %s, I %s to %s" (org-entry-get (point) "Role")
(org-entry-get (point) "Necessity")
(nth 4 (org-heading-components))))
(defun scrumelo--task-state-class (state)
"Return the correct icon class for STATE."
(cdr (assoc state '(("TODO" . "icon-check-empty")
("DOING" . "icon-sign-blank")
("DONE" . "icon-check")))))
(defun scrumelo--story-row ()
"Return a table row for the current org headline."
(let ((state (org-entry-get (point) "TODO")))
`(tr (td (i (@ (class ,(scrumelo--task-state-class state))) "")
" " ,state)
(td (a (@ (id ,(org-id-get))
(onclick "return get_story_info(this)"))
,(scrumelo--story))))))
(defun scrumelo--maybe-story-row ()
"If looking at a top level heading, return a table row for it."
(when (= (car (org-heading-components)) 1)
(scrumelo--story-row)))
(defun scrumelo--inner-story-table (buffer)
"Return the inner part of the story table for BUFFER."
(with-current-buffer buffer
(delq nil (org-map-entries
'scrumelo--maybe-story-row nil nil 'comment))))
(defun scrumelo--story-table (buffer)
"Return the story table for BUFFER."
`(table (@ (class "table table-striped"))
,@(scrumelo--inner-story-table buffer)))
(defun scrumelo--new-story-form ()
"Create a form for adding new stories."
`(form (@ (method "POST")
(action "/stories/new/"))
(fieldset
(legend (@ (class "toggle")
(data-show "new-story")) "New story")
(div (@ (id "new-story")
(class "hide")
(style "text-align: center;"))
(div (@ (class "input-prepend input-append"))
(span (@ (class "add-on")) "As a ")
(input (@ (class "input-medium") (type "text")
(name "role")))
(span (@ (class "add-on")) " I ")
(input (@ (class "input-mini") (type "text")
(name "necessity")))
(span (@ (class "add-on")) " to ")
(input (@ (class "input-xxlarge") (type "text")
(name "headline")))
(button (@ (class "btn") (type "submit")) "!"))))))
(defun scrumelo-backlog-page (httpcon)
"Send the backlog overview over HTTPCON."
(let ((buffer (find-file-noselect scrumelo-project-file)))
(elnode-http-start httpcon 200 '("Content-Type" . "text/html"))
(elnode-http-return
httpcon
(concat
"<!DOCTYPE html>\n"
(sxml-to-xml
`(html (head (title "Scrumelo")
,@(scrumelo--css-list)
,@(scrumelo--js-list))
(body
(div (@ (class "container"))
,(scrumelo--story-table buffer)
,(scrumelo--new-story-form)))))))))
(defun scrumelo-new-story (httpcon)
"Parse data from HTTPCON and write a new scrum story using it."
(elnode-method httpcon
(POST
(let ((buffer (find-file-noselect scrumelo-project-file)))
(with-scrumelo-http-params (role necessity headline) httpcon
(with-current-buffer buffer
(goto-char (point-max))
(insert "\n* TODO " headline)
(org-set-property "Role" role)
(org-set-property "Necessity" necessity)
(save-buffer))))
(elnode-send-redirect httpcon "/"))))
(defun scrumelo--send-json (httpcon obj)
"Respond to HTTPCON with OBJ converted to a json structure."
(elnode-http-start httpcon 200 '("Content-Type" . "text/json"))
(elnode-http-return httpcon (json-encode obj)))
(defun scrumelo-story-json (httpcon)
"Repsond to HTTPCON with some json info about a story."
(let* ((story (match-string 1 (elnode-http-mapping httpcon)))
(buffer (find-file-noselect scrumelo-project-file))
(entry (cdr (org-id-find story))))
(with-current-buffer buffer
(goto-char entry)
(scrumelo--send-json
httpcon (list (cons 'Assignee (org-entry-get (point) "Assignee"))
(cons 'content (buffer-substring-no-properties
(org-end-of-meta-data-and-drawers)
(org-entry-end-position))))))))
(defun scrumelo-handler (httpcon)
"Send the right requests in HTTPCON to the right functions."
(elnode-dispatcher
httpcon
`(("^/$" . scrumelo-backlog-page)
("^/js/scrumelo.js" . ,(elnode-make-send-file
(concat scrumelo--base-dir "js/scrumelo.js")))
("^/stories/new/$" . scrumelo-new-story)
("^/stories/\\([a-z0-9:-]+\\)/$" . scrumelo-story-json))))
(elnode-start 'scrumelo-handler :port 8028 :host "localhost")
(provide 'scrumelo)
;;; scrumelo.el ends here
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