;;; module-org-notes.el

;; This transforms Emacs+org-mode into a notebook application with:
;;   + Custom links for class notes
;;   + Shortcuts for searching org files
;;   + Shortcuts for creating new notes (there's org-capture, but this is suited to my
;;     workflow)
;;   + A simpler attachment system (with auto-deleting support) and drag-and-drop
;;     for images and documents into org files
;;   + A pandoc-powered export system

(add-hook 'org-load-hook 'doom|org-notebook-init t)
(add-hook 'org-load-hook 'doom|org-attach-init t)
(add-hook 'org-load-hook 'doom|org-export-init t)

(defconst org-directory-notebook (f-expand "notes/" org-directory))
(defconst org-default-notes-file (f-expand "inbox.org" org-directory-notebook))

(defvar org-attach-directory ".attach/")
(defvar org-export-directory (concat org-directory ".export"))
(defvar org-quicknote-directory (concat org-directory "Inbox/"))

;; Keep track of attachments
(defvar-local doom-org-attachments-list '()
  "A list of attachments for the current buffer")

;; Tell helm to ignore these directories
(after! helm
  (mapc (lambda (r) (add-to-list 'helm-boring-file-regexp-list r))
        (list "\\.attach$" "\\.export$")))


;;
(defun doom|org-notebook-init ()
  (setq org-capture-templates
        '(;; TODO: New Note (note)
          ;; TODO: New Task (todo)
          ;; TODO: New vocabulary word

          ("c" "Changelog" entry
           (file+headline (f-expand "CHANGELOG.org" (doom/project-root)) "Unreleased")
           "* %?")

          ;; ("p" "Project Notes" entry
          ;;  (file+headline org-default-notes-file "Inbox")
          ;;  "* %u %?\n%i" :prepend t)

          ;; ("m" "Major-mode Notes" entry
          ;;  (file+headline org-default-notes-file "Inbox")
          ;;  "* %u %?\n%i" :prepend t)

          ;; ("n" "Notes" entry
          ;;  (file+headline org-default-notes-file "Inbox")
          ;;  "* %u %?\n%i" :prepend t)

          ;; ("v" "Vocab" entry
          ;;  (file+headline (concat org-directory "topics/vocab.org") "Unsorted")
          ;;  "** %i%?\n")
          )))

;; I don't like Org's attachment system. So I replaced it with my own, which stores
;; attachments in a global org .attach directory. It also implements drag-and-drop
;; file support and attachment icons. It also treats images specially.
;;
;; To clean up unreferenced attachments, call `doom/org-cleanup-attachments'
(defun doom|org-attach-init ()
  ;; FIXME Use all-the-icons
  ;; (doom-fix-unicode '("FontAwesome" 13) ? ? ? ? ? ? ? ?)
  ;; Drag-and-drop support
  (require 'org-download)
  (setq-default org-download-image-dir org-attach-directory
                org-download-heading-lvl nil
                org-download-timestamp "_%Y%m%d_%H%M%S")

  (when IS-MAC
    (setq org-download-screenshot-method "screencapture -i %s"))

  ;; Write download paths relative to current file
  (defun org-download--dir-2 () nil)
  (defun doom*org-download--fullname (path)
    (f-relative path (f-dirname (buffer-file-name))))
  (advice-add 'org-download--fullname :filter-return 'doom*org-download--fullname)

  ;; Add another drag-and-drop handler that will handle anything but image files
  (setq dnd-protocol-alist `(("^\\(https?\\|ftp\\|file\\|nfs\\):\\(//\\)?" . doom/org-download-dnd)
                             ,@dnd-protocol-alist)))


;;
(defun doom|org-export-init ()
  "Set up my own exporting system."
  (setq org-export-backends '(ascii html latex md)
        org-export-with-toc t
        org-export-with-author t)

  (require 'ox-pandoc)
  (setq org-pandoc-options '((standalone . t) (mathjax . t) (parse-raw . t)))

  ;; Export to a central directory (why isn't this easier?)
  (unless (file-directory-p org-export-directory)
    (mkdir org-export-directory))
  (defun doom*org-export-output-file-name (args)
    (unless (nth 2 args)
      (setq args (append args (list org-export-directory))))
    args)
  (advice-add 'org-export-output-file-name :filter-args 'doom*org-export-output-file-name))

;; TODO
;; (defvar doom-org-tags '())
;; (defun doom|org-tag-init ()
;;   (async-start
;;    `(lambda ()
;;       (let* ((default-directory (doom/project-root))
;;              (data (s-trim (shell-command-to-string "ag --nocolor --nonumbers '^#\\+TAGS:'")))
;;              (alist '()))
;;         (unless (zerop (length data))
;;           (mapc (lambda (l)
;;                   (let* ((parts (s-split ":" l))
;;                          (file (car parts))
;;                          (tags (s-trim (nth 2 parts))))
;;                     (mapc (lambda (tag)
;;                             (setq tag (substring tag 1))
;;                             (unless (assoc tag alist)
;;                               (push (cons tag (list)) alist))
;;                             (push file (cdr (assoc tag alist))))
;;                           (s-split " " tags))))
;;                 (s-lines data))
;;           alist)))
;;    (lambda (_)
;;      )))

;;
(provide 'module-org-notes)
;;; module-org-notes.el ends here