From 34103c087aeb885bf351b0c387dbbf08ae4327a5 Mon Sep 17 00:00:00 2001
From: Oscar Najera <hi@oscarnajera.com>
Date: Sun, 23 Apr 2023 18:26:43 +0200
Subject: tagmail more use unless and dry-run closure

---
 bin/tagmail | 31 ++++++++++++++++---------------
 1 file changed, 16 insertions(+), 15 deletions(-)

diff --git a/bin/tagmail b/bin/tagmail
index 52bcc7c..0e8f0bc 100755
--- a/bin/tagmail
+++ b/bin/tagmail
@@ -38,9 +38,9 @@ LD_LIBRARY_PATH=$HOME/.guix-profile/lib exec guile -e main -s "$0" "$@"
 
 (define (delete-email-files! options)
   (define (logged-delete file-path)
-    (let ((do? (not (option-ref options 'dry-run #f))))
-      (simple-format #t " [rm] ~a~%" file-path)
-      (if do? (delete-file file-path))))
+    (simple-format #t " [rm] ~a~%" file-path)
+    (unless (option-ref options 'dry-run #f)
+      (delete-file file-path)))
   (with-nm-database
    (ffi-db (assq-ref options 'mail-repo) 0)
    (with-nm-query
@@ -53,14 +53,14 @@ LD_LIBRARY_PATH=$HOME/.guix-profile/lib exec guile -e main -s "$0" "$@"
 
 (define (move-mail! options account query start-dir end-dir)
   (define (move-file uidvalidity target-folder)
-    (lambda (file)
-      (let* ((target-file (new-path (rename-higher file uidvalidity) target-folder))
-             (sub-len (string-prefix-length file target-file))
-             (do? (not (option-ref options 'dry-run #f))))
-        (simple-format #t " [mv]   ~a -> ~a~%"
-                       (substring file sub-len)
-                       (substring target-file sub-len))
-        (when do? (rename-file file target-file)))))
+    (let ((dry-run? (option-ref options 'dry-run #f)))
+      (lambda (file)
+        (let* ((target-file (new-path (rename-higher file uidvalidity) target-folder))
+               (sub-len (string-prefix-length file target-file)))
+          (simple-format #t " [mv]   ~a -> ~a~%"
+                         (substring file sub-len)
+                         (substring target-file sub-len))
+          (unless dry-run? (rename-file file target-file))))))
 
   (let* ((mail-repo (assq-ref options 'mail-repo))
          (target-folder (format #f "~a~a/~a" mail-repo account end-dir))
@@ -78,10 +78,11 @@ LD_LIBRARY_PATH=$HOME/.guix-profile/lib exec guile -e main -s "$0" "$@"
       (on-all-messages-filenames to-move (move-file uidvalidity target-folder))))))
 
 (define (apply-tags-to-message options tags)
-  (lambda (message)
-    (simple-format #t "  ~a~%" (nm-header message "subject"))
-    (unless (option-ref options 'dry-run #f)
-      (nm-apply-tags message tags)) #t))
+  (let ((dry-run? (option-ref options 'dry-run #f)))
+    (lambda (message)
+      (simple-format #t "  ~a~%" (nm-header message "subject"))
+      (unless dry-run?
+        (nm-apply-tags message tags)) #t)))
 
 (define (log-msg-tag count rule new)
   (let* ((query-str (query-with-new rule new))
-- 
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