feat(notable): Add a function for listing existing notes r/1797

Change-Id: I23697b4798ee4d4e94d3f7c1a4e4e9abf5115345
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1982
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>

1 files changed, 16 insertions, 5 deletions

diff --git a/tools/emacs-pkgs/notable/notable.el b/tools/emacs-pkgs/notable/notable.el
index b0b81da21e..d3866bb809 100644
--- a/tools/emacs-pkgs/notable/notable.el
+++ b/tools/emacs-pkgs/notable/notable.el
@@ -51,14 +51,17 @@
 (defvar notable--note-lock (make-mutex "notable-notes")
   "Exclusive lock for note operations with shared state.")
 
+(defvar notable--note-regexp
+  (rx "note-"
+      (group (one-or-more (any num)))
+      ".json")
+  "Regular expression to match note file names.")
+
 (defvar notable--next-note
-  (let ((next 0)
-        (note-regexp (rx "note-"
-                         (group (one-or-more (any num)))
-                         ".json")))
+  (let ((next 0))
     (-each (f-entries notable-note-dir)
       (lambda (file)
-        (when-let* ((match (string-match note-regexp file))
+        (when-let* ((match (string-match notable--note-regexp file))
                     (id (string-to-number
                          (match-string 1 file)))
                     (larger (> id next)))
@@ -100,6 +103,14 @@
     (f-write-text (notable--serialize-note note) 'utf-8 path)
     (message "Saved note %d" id)))
 
+(defun notable--list-note-ids ()
+  "List all note IDs (not contents) from `notable-note-dir'"
+  (cl-loop for file in (f-entries notable-note-dir)
+           with res = nil
+           if (string-match notable--note-regexp file)
+           do (push (string-to-number (match-string 1 file)) res)
+           finally return res))
+
 ;; User-facing functions
 
 (defun notable-take-note (content)