dotfiles/emacs-lisp/org_roam.org

:PROPERTIES:
:ID:       18476d68-cccb-48f4-aa77-caefe213d8bd
:END:
#+title: Org Roam
#+filetags: emacs-load

#+BEGIN_NOTE
When exporting, running ~(org-id-update-id-locations (directory-files-recursively org-roam-directory ".org"))~
#+END_NOTE

#+BEGIN_SRC emacs-lisp :tangle no :results none
(defun replace-in-string (what with in)
  (replace-regexp-in-string (regexp-quote what) with in nil 'literal))

(defun org-html--format-image (source attributes info)
  (progn
    (setq source (replace-in-string "%20" " " source))
    (format "<img src=\"data:image/%s+xml;base64,%s\"%s />"
            (or (file-name-extension source) "")
            (base64-encode-string
             (with-temp-buffer
               (insert-file-contents-literally source)
              (buffer-string)))
            (file-name-nondirectory source))))
#+END_SRC

#+BEGIN_QUOTE
Org-roam is a plain-text knowledge management system. It brings some of Roam's more powerful features into the Org-mode ecosystem.
#+END_QUOTE

#+BEGIN_WARNING
SQLite3 must be on Emacs' PATH!
#+END_WARNING

#+BEGIN_SRC emacs-lisp :results none
  (use-package org-roam
    :straight t
    :init
    (setq org-roam-v2-ack t)
    :config
    (add-hook 'after-init-hook 'org-roam-setup)
  
    ;; Add ignore for SyncThing
    (setq org-roam-file-exclude-regexp "\\.stversions")

    (setq org-roam-directory "~/roam")
    (setq org-roam-capture-templates
          `(("e" "Emacs Lisp" plain "%?"
             :target (file+head "emacs-lisp/${slug}.org"
                                "#+title: ${title}\n#+filetags: emacs-load")
             :unnarrowed t)
            ("d" "default" plain "%?"
             :target (file+head "%<%Y%m%d%H%M%S>-${slug}.org"
                                "#+title: ${title}\n")
             :unnarrowed t))))
  
#+END_SRC

* Ref Capture

Using ~org-protocol~, one can capture a website from their browser directly into Org Roam.

#+BEGIN_SRC emacs-lisp
  (with-eval-after-load "org-roam"
    (require 'org-roam-protocol)
    (setq org-roam-capture-ref-templates
          `(("r" "ref" plain "%?"
             :target (file+head "%<%Y%m%d%H%M%S>-${slug}.org" "#+title: ${title}\n\n${body}")
             :unnarrowed t))))
#+END_SRC

Then you need a desktop entry for ~org-protocol~. Such as:

#+BEGIN_SRC conf-desktop 
  [Desktop Entry]
  Name=org-protocol
  Exec=emacsclient %u
  Type=Application
  Terminal=false
  Categories=System;
  MimeType=x-scheme-handler/org-protocol;
#+END_SRC

or in Nix form:

#+BEGIN_SRC nix
  makeDesktopItem {
    name = "Org-Protocol";
    exec = "emacsclient %u";
    comment = "Org protocol";
    desktopName = "org-protocol";
    type = "Application";
    mimeType = "x-scheme-handler/org-protocol";
  }
#+END_SRC

Lastly a bookmarklet in Firefox.

#+BEGIN_SRC javascript
  javascript:location.href ='org-protocol://roam-ref?template=r&ref=' + encodeURIComponent(location.href) + '&title=' + encodeURIComponent(document.title) + '&body=' + encodeURIComponent(window.getSelection())
#+END_SRC