Fix ensureParent method to correctly handle baseURL and cur path separators

go_cloud/internal/storage/webdav.go

@@ -59,7 +59,12 @@ func (c *WebDAVClient) ensureParent(ctx context.Context, remotePath string) erro
 		if cur == "" || cur == "/" {
 			mkurl = fmt.Sprintf("%s/%s", c.baseURL, url.PathEscape(p))
 		} else {
-			mkurl = fmt.Sprintf("%s%s", c.baseURL, cur)
+			// Ensure there's a "/" between baseURL and cur
+			sep := ""
+			if !strings.HasSuffix(c.baseURL, "/") && !strings.HasPrefix(cur, "/") {
+				sep = "/"
+			}
+			mkurl = fmt.Sprintf("%s%s%s", c.baseURL, sep, strings.TrimPrefix(cur, "/"))
 		}
 		req, _ := http.NewRequestWithContext(ctx, "MKCOL", mkurl, nil)
 		if c.user != "" {