From 9b147ad6af201fa4279f04a778728f48d3d08b18 Mon Sep 17 00:00:00 2001
From: Tom Willemse <tom@ryuslash.org>
Date: Mon, 11 May 2020 00:14:57 -0700
Subject: [PATCH] Add functions to create notes while reading ebooks

---
 oni-org/oni-org.el | 62 ++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 60 insertions(+), 2 deletions(-)

diff --git a/oni-org/oni-org.el b/oni-org/oni-org.el
index f502d5a..ced5a6a 100644
--- a/oni-org/oni-org.el
+++ b/oni-org/oni-org.el
@@ -4,7 +4,7 @@
 
 ;; Author: Tom Willemse <tom@ryuslash.org>
 ;; Keywords: local
-;; Version: 2020.0420.220918
+;; Version: 2020.0511.001009
 ;; Package-Requires: (oni-yasnippet oni-alert oni-hydra org-plus-contrib org-bullets org-edna diminish all-the-icons)
 
 ;; This program is free software; you can redistribute it and/or modify
@@ -231,8 +231,63 @@ _l_: Store link           ^^                         _j_: Journal entry
                 ("documents/gtd/books.org" :maxlevel . 1)
                 ("documents/gtd/bookmarks.org" :maxlevel . 2))))
 
+(defun oni-org-find-heading-in-file (heading file &optional move)
+  "Try to find HEADING somewhere in FILE.
+This function returns nil if HEADING couldn’t be found, and the
+position where the chapter starts otherwise. If MOVE is non-nil
+also move point to the start of the heading."
+  (let ((buffer (find-file-noselect file)))
+    (with-current-buffer buffer
+      (save-excursion
+        (goto-char (point-min))
+        (org-find-exact-headline-in-buffer heading buffer (not move))))))
+
+(defun oni-org-create-book-heading (book-title file)
+  "Create a new heading for BOOK-TITLE in FILE."
+  (let ((buffer (find-file file)))
+    (with-current-buffer buffer
+      (goto-char (point-max))
+      (insert "\n* " book-title "\n\n  "))))
+
+(defun oni-org-create-chapter-heading (book-title chapter-title file)
+  "Create a new heading under BOOK-TITLE for CHAPTER-TITLE in FILE."
+  (let ((buffer (find-file file)))
+    (with-current-buffer buffer
+      (goto-char (point-min))
+      (goto-char (oni-org-find-heading-in-file book-title file t))
+      (goto-char (org-element-property :end (org-element-at-point)))
+      (unless (= (point) (point-max))
+        (open-line 2))
+      (insert "\n** " chapter-title "\n\n   "))))
+
+(defun oni-org-create-chapter-section (chapter-title file)
+  "Create a new notes section under CHAPTER-TITLE in FILE."
+  (let ((buffer (find-file file)))
+    (with-current-buffer buffer
+      (goto-char (point-min))
+      (goto-char (oni-org-find-heading-in-file chapter-title file t))
+      (goto-char (org-element-property :contents-end (org-element-at-point)))
+      (insert "\n"))))
+
+(defun oni-org-reading-note ()
+  "Find the org-header associated with the current chapter or page."
+  (let* ((headers (split-string (format-mode-line header-line-format) ":" t " "))
+         (book-name (car headers))
+         (chapter-name (cadr headers))
+         (notes-file (oni-org-expand-to-home "documents/gtd/reading-notes.org"))
+         (chapter-start (oni-org-find-heading-in-file chapter-name notes-file)))
+    (if (not chapter-start)
+        (let ((book-start (oni-org-find-heading-in-file book-name notes-file)))
+          (unless book-start
+            (oni-org-create-book-heading book-name notes-file))
+          (oni-org-create-chapter-heading book-name chapter-name notes-file))
+      (oni-org-create-chapter-section chapter-name notes-file))))
+
+(setq org-capture-templates-contexts
+      '(("n" ((in-mode . "nov-mode")))))
+
 (setq org-capture-templates
-      `(("t" "Note" entry
+      `(("t" "Task" entry
          (file ,(oni-org-expand-to-home "documents/gtd/inbox.org"))
          "* TODO %i%?\n  :PROPERTIES:\n  :CREATED:  %U\n  :END:")
         ("a" "Appointment" entry
@@ -243,6 +298,9 @@ _l_: Store link           ^^                         _j_: Journal entry
          (file+olp+datetree
           ,(oni-org-expand-to-home "documents/gtd/journal.org"))
          "* %<%H:%M:%S>\n  %?")
+        ("n" "Reading note" item (function oni-org-reading-note)
+         "%?\n\n#+begin_quote\n%i\n#+end_quote"
+         :empty-lines 1)
         ("c" "Add to currently clocked item")
         ("ca" "Note" plain
          (clock)