org-habit-streaks/org-habit-streaks.el

96 lines
3.5 KiB
EmacsLisp

;;; org-habit-streaks --- Counts streaks in org-habit entries
;; Copyright (c) 2015 Correl Roush
;; Author: Correl Roush <correl@gmail.com>
;; URL: http://github.com/correl/org-habit-streaks/
;; Version: 0.1
;; Created: 2015-06-11
;; This file is NOT part of GNU Emacs.
;;; License:
;; 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, 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 GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;;; Code:
(require 'org-habit)
(defcustom org-habit-streaks-preceding-days
365
"Number of days before today to include in streak counting."
:group 'org-habit-streaks
:type 'integer)
(defun org-habit-streaks--streaks (interval values)
"Given an INTERVAL and a list of sequential integer VALUES, group streaks together."
(-reduce-from
(lambda (acc value)
(let* ((current-streak (car acc))
(last-value (car current-streak))
(new-streak? (or (not last-value)
(> (- value last-value) interval)))
(rest (cdr acc)))
(if new-streak?
(cons (list value) acc)
(cons (cons value current-streak)
rest))))
nil
values))
;;;###autoload
(defun org-habit-streaks (&optional pom)
"Groups past dates the task at point was completed into streaks."
(let* ((org-habit-preceding-days org-habit-streaks-preceding-days)
(habit (org-habit-parse-todo pom))
(interval (org-habit-scheduled-repeat habit))
(done-dates (org-habit-done-dates habit))
(streaks (org-habit-streaks--streaks interval done-dates))
(last-done (-last-item done-dates))
(current-streak (if (and streaks (<= (- (org-today) last-done) interval))
(length (car streaks))
0)))
(list current-streak streaks)))
;;;###autoload
(defun org-dblock-write:habit-summary (params)
(let ((streaks (org-map-entries
(lambda ()
(list (org-get-heading t t)
(let ((org-habit-streaks-preceding-days 365))
(org-habit-streaks))))
"STYLE=\"habit\"+TODO=\"TODO\"")))
(insert "| Habit | Best Streak | Current Streak |\n")
(insert "|-\n")
(insert (mapconcat (lambda (row)
(let ((habit (first row))
(best-streak (first (-sort #'> (-map #'length (cdr (second row))))))
(current-streak (car (second row))))
(concat "| "
(mapconcat (apply-partially 'format "%s")
(list habit best-streak current-streak)
" | ")
"|")))
streaks
"\n"))
(org-table-align)))
(provide 'org-habit-streaks)
;;; org-habit-streaks.el ends here