FIX fetching max toot length from server

some servers have 'max_toot_chars, but others seem to have 'max_characters,
under statuses, under configuation.

we allow for both types, but also we check our var isn't nil before trying to
check it's length, which broke toot--send in some cases.

1 files changed, 12 insertions, 4 deletions

diff --git a/lisp/mastodon-toot.el b/lisp/mastodon-toot.el
index befffee..22699f1 100644
--- a/lisp/mastodon-toot.el
+++ b/lisp/mastodon-toot.el
@@ -162,11 +162,18 @@ Valid values are \"direct\", \"private\" (followers-only),
 
 (defun mastodon-toot--get-max-toot-chars-callback (json-response)
   "Set max_toot_chars returned in JSON-RESPONSE and display in new toot buffer."
+  (let ((max-chars
+         (or
+          (alist-get 'max_toot_chars json-response)
+          ;; some servers have this instead:
+          (alist-get 'max_characters
+                     (alist-get 'statuses
+                                (alist-get 'configuration
+                                           json-response))))))
   (setq mastodon-toot--max-toot-chars
-        (number-to-string
-         (alist-get 'max_toot_chars json-response)))
+        (number-to-string max-chars))
   (with-current-buffer "*new toot*"
-    (mastodon-toot--update-status-fields)))
+    (mastodon-toot--update-status-fields))))
 
 (defun mastodon-toot--action-success (marker byline-region remove)
   "Insert/remove the text MARKER with 'success face in byline.
@@ -493,7 +500,8 @@ If media items have been attached and uploaded with
                     (not (= (length mastodon-toot--media-attachments)
                             (length mastodon-toot--media-attachment-ids)))))
            (message "Something is wrong with your uploads. Wait for them to complete or try again."))
-          ((> (length toot) (string-to-number mastodon-toot--max-toot-chars))
+          ((and mastodon-toot--max-toot-chars
+                (> (length toot) (string-to-number mastodon-toot--max-toot-chars)))
            (message "Looks like your toot is longer than that maximum allowed length."))
           (empty-toot-p
            (message "Empty toot. Cowardly refusing to post this."))