dependency adder for module edna
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;;; dame.el --- Dependency adding for module edna -*- lexical-binding: t; -*-
;; Copyright (C) 2020 DrOps
;; Author: DrOps <dr.ops@mailbox.org>
;; Version: 0.1
;; Package-Requires: (org)
;; URL: https://codeberg.org/dr.ops/dame
;; Keywords: convenience, edna
;; 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, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; The most overly ambitiously named package to help you make dependencies for org-edna.
;;
;; I should describe how it actually works here.
;;; Code:
(require 'org)
(defvar dame-search-function "helm-org-rifle"
"The interface to use for finding target links.
This can be a string with one of the values 'helm-org-ql',
'helm-org-rifle', or a custom function. If you provide a custom
function it will be called with the `point` at the location the link
should be inserted. The only other requirement is that it should call
the function `dame--insert-link' with a marker to the target link. AKA
the place you want the backlink.
Using 'helm-org-ql' or 'helm-org-rifle' will also add a new action to
the respective action menu.
See the function `dame-link-search-interface-ql' or for an example.")
(declare-function dame-link-search-interface-ql "ext:dame-org-ql")
(declare-function dame-link-search-interface-rifle "ext:dame-org-rifle")
(defun dame-search-function ()
"Call the search interface specified in `dame-search-function'."
(cond ((string= dame-search-function "helm-org-ql")
(require 'dame-org-ql)
(dame-link-search-interface-ql))
((string= dame-search-function "helm-org-rifle")
(require 'dame-org-rifle)
(dame-link-search-interface-rifle))
(t (funcall dame-search-function))))
(defun dame-default-description-formatter (link desc)
"Return a string to use as the link desciption.
LINK is the link target. DESC is the provided desc."
(let ((p dame-default-description-formatter))
(cond ((equal p nil) (or desc link))
((stringp p) (or desc p))
((fboundp p) (funcall p link desc))
(t desc))))
(defun dame-backlink-into-drawer ()
"Name of the backlink drawer, as a string, or nil.
This is the value of `dame-backlink-into-drawer'. However, if the
current entry has or inherits a BACKLINK_INTO_DRAWER property, it will
be used instead of the default value."
(let ((p (org-entry-get nil "BACKLINK_INTO_DRAWER" 'inherit t)))
(cond ((equal p "nil") nil)
((equal p "t") "PROPERTIES")
((stringp p) p)
(p "PROPERTIES")
((stringp dame-backlink-into-drawer) dame-backlink-into-drawer)
(dame-backlink-into-drawer "PROPERTIES"))))
(defun dame-insert-trigger (desc)
(org-set-property "TRIGGER" (format "ids(%s) todo!(NEXT) scheduled!(.)" desc))
)
(defun dame-insert-blocker (desc)
"Insert backlink to LINK with DESC.
Where the backlink is placed is determined by the variable `dame-backlink-into-drawer'."
(org-set-property "BLOCKER" (format "ids(%s)" desc))
)
(defun dame--insert-link (target)
"Insert link to marker TARGET at current `point`, and create backlink to here.
Only create backlinks in files in `org-mode' or a derived mode, otherwise just
act like a normal link."
(let ((origin (drops-id-get-or-generate)))
(with-current-buffer (marker-buffer target)
(save-excursion
(goto-char (marker-position target))
(when (derived-mode-p 'org-mode)
(dame-insert-blocker origin)
)
(setq destination (drops-id-get-or-generate))
)
)
)
(dame-insert-trigger destination)
)
;;;###autoload
(defun dame-link ()
"Insert a link and add a backlink to the target heading."
(interactive)
(dame-search-function))
(provide 'dame)
;;; dame.el ends here