[oni-org-roam] Add command to pick a random book from toread list

oni-org-roam.el

@@ -4,7 +4,7 @@
 
 ;; Author: Tom Willemse <tom@ryuslash.org>
 ;; Keywords: local
-;; Version: 2022.1122.231427
+;; Version: 2023.0325.115622
 ;; Package-Requires: (oni-org org-roam)
 
 ;; This program is free software; you can redistribute it and/or modify
@@ -66,6 +66,27 @@
     (and (not (null state))
          (not (string= state "FINISHED")))))
 
+(defun oni-org-roam--books-to-read ()
+  (seq-filter (lambda (item)
+                (string= (map-elt (car item) "STATUS") "toread"))
+              (org-roam-db-query [:select [nodes:properties nodes:file nodes:title]
+                                  :from nodes
+                                  :left-join tags
+                                  :on (= tags:node-id nodes:id)
+                                  :where (like tag (quote "%\"book\"%"))])))
+
+(defun oni-org-roam-list-books-to-read ()
+  (interactive)
+  (let ((buffer (get-buffer-create "*books-to-read*")))
+    (with-current-buffer buffer
+      (erase-buffer)
+      (mapc (lambda (item) (insert (caddr item) "\n")) (oni-org-roam--books-to-read)))
+    (switch-to-buffer buffer)))
+
+(defun oni-org-roam-random-book-to-read ()
+  (interactive)
+  (find-file (cadr (seq-random-elt (oni-org-roam--books-to-read)))))
+
 (add-to-list 'display-buffer-alist
              `(,(rx string-start "*org-roam*" string-end)
                display-buffer-in-side-window