From 8b8b40fe1ed9485b5bba72c584ab9b5507b9b65c Mon Sep 17 00:00:00 2001
From: jao <jao@gnu.org>
Date: Wed, 2 Mar 2022 01:47:37 +0000
Subject: gnus: tagging commands for notmuch interop

---
 gnus.org | 101 +++++++++++++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 75 insertions(+), 26 deletions(-)

(limited to 'gnus.org')

diff --git a/gnus.org b/gnus.org
index 1cf1690..afd7110 100644
--- a/gnus.org
+++ b/gnus.org
@@ -377,7 +377,55 @@
     (eval-after-load "message"
       '(setq message-draft-headers (remove 'Date message-draft-headers)))
   #+END_SRC
-* Add-ons
+* Notmuch integration
+*** notmuch tags
+    #+begin_src emacs-lisp
+      (defun jao-gnus-message-id ()
+        (when (derived-mode-p 'gnus-summary-mode)
+          (save-window-excursion (gnus-summary-show-article)))
+        (when gnus-original-article-buffer
+          (with-current-buffer gnus-original-article-buffer
+            (when-let (id (message-field-value "message-id"))
+              (if (string-match "<\\(.+\\)>" id)
+                  (match-string 1 id)
+                id)))))
+
+      (defun jao-gnus-message-tags (id)
+        (let ((cmd (format "notmuch search --output=tags 'id:%s'" id)))
+          (split-string (shell-command-to-string cmd))))
+
+      (defun jao-gnus-tag-message ()
+        (interactive)
+        (let* ((id (jao-gnus-message-id))
+               (current (jao-gnus-message-tags id))
+               (prompt (format "Change tags %s" (string-join current "/")))
+               (tags (notmuch-read-tag-changes current prompt)))
+          (notmuch-tag (concat "id:" id) tags)
+          (message "%s -> %s" current (jao-gnus-message-tags id))))
+
+      (defun jao-gnus-show-tags ()
+        (interactive)
+        (when-let (id (jao-gnus-message-id))
+          (message "%s" (string-join (jao-gnus-message-tags id) " "))))
+
+      (defun jao-gnus-toggle-tags (tags)
+        (let* ((id (jao-gnus-message-id))
+               (current (jao-gnus-message-tags id))
+               (tags (mapcar (lambda (x)
+                               (concat (if (member x current) "-" "+") x))
+                             tags)))
+          (notmuch-tag (concat "id:" id) tags)
+          (message "New tags: %s" (jao-gnus-message-tags id))))
+
+      (defun jao-gnus-toggle-todo ()
+        (interactive)
+        (jao-gnus-toggle-tags '("todo")))
+
+      (define-key gnus-summary-mode-map (kbd "C-c T") #'jao-gnus-tag-message)
+      (define-key gnus-summary-mode-map (kbd "C-c t") #'jao-gnus-show-tags)
+      (define-key gnus-summary-mode-map (kbd "C-c C-t") #'jao-gnus-toggle-todo)
+
+    #+end_src
 *** notmuch -> gnus / consult-notmuch
     #+begin_src emacs-lisp
       (defun jao-notmuch-goto-message-in-gnus ()
@@ -408,31 +456,6 @@
         (define-key notmuch-show-mode-map (kbd "C-c C-c")
                     #'jao-notmuch-goto-message-in-gnus))
     #+end_src
-*** icalendar/org
-    #+begin_src emacs-lisp
-      (require 'ol-gnus)
-      (use-package gnus-icalendar
-        :demand t
-        :init (setq gnus-icalendar-org-capture-file
-                    (expand-file-name "inbox.org" org-directory)
-                    gnus-icalendar-org-capture-headline '("Appointments"))
-        :config (gnus-icalendar-org-setup))
-    #+end_src
-*** bbdb
-    #+begin_src emacs-lisp
-      (with-eval-after-load "bbdb"
-        (bbdb-initialize 'gnus 'message 'pgp 'mail)
-        (bbdb-mua-auto-update-init 'gnus)
-        (with-eval-after-load "gnus-sum"
-          (define-key gnus-summary-mode-map ":" 'bbdb-mua-annotate-sender)
-          (define-key gnus-summary-mode-map ";" 'bbdb-mua-annotate-recipients)))
-    #+end_src
-*** randomsig
-    #+begin_src emacs-lisp
-      (with-eval-after-load "randomsig"
-        (with-eval-after-load "gnus-sum"
-          (define-key gnus-summary-save-map "-" 'gnus/randomsig-summary-read-sig)))
-    #+end_src
 * Groups buffer
   #+begin_src emacs-lisp
     ;; (setq gnus-group-line-format " %m%S%p%P:%~(pad-right 35)c %3y %B\n")
@@ -747,6 +770,32 @@
               (when-let ((url (thing-at-point-url-at-point)))
                 (jao-browse-add-url-to-mpc url))))))
     #+end_src
+* Add-ons
+*** icalendar/org
+    #+begin_src emacs-lisp
+      (require 'ol-gnus)
+      (use-package gnus-icalendar
+        :demand t
+        :init (setq gnus-icalendar-org-capture-file
+                    (expand-file-name "inbox.org" org-directory)
+                    gnus-icalendar-org-capture-headline '("Appointments"))
+        :config (gnus-icalendar-org-setup))
+    #+end_src
+*** bbdb
+    #+begin_src emacs-lisp
+      (with-eval-after-load "bbdb"
+        (bbdb-initialize 'gnus 'message 'pgp 'mail)
+        (bbdb-mua-auto-update-init 'gnus)
+        (with-eval-after-load "gnus-sum"
+          (define-key gnus-summary-mode-map ":" 'bbdb-mua-annotate-sender)
+          (define-key gnus-summary-mode-map ";" 'bbdb-mua-annotate-recipients)))
+    #+end_src
+*** randomsig
+    #+begin_src emacs-lisp
+      (with-eval-after-load "randomsig"
+        (with-eval-after-load "gnus-sum"
+          (define-key gnus-summary-save-map "-" 'gnus/randomsig-summary-read-sig)))
+    #+end_src
 * Keyboard shortcuts
   #+begin_src emacs-lisp
     (define-key gnus-article-mode-map "i" 'jao-gnus-show-images)
-- 
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