Extend id-manager functionality

Add new macros that can fetch the account-id and password for a given
account.

init.el

@@ -513,6 +513,7 @@
 (use-package id-manager
   :ensure t
   :config
+  (load "idm")
   (setq idm-database-file (expand-file-name "idm-db.gpg" user-emacs-directory))
   :bind
   (:map gpolonkai/pers-map

lisp/idm.el

@@ -0,0 +1,21 @@
+;; id-manager extensions
+
+(defun gpolonkai/idm-record-get-field (record field)
+  "Get FIELD of an id-manager RECORD."
+  (let ((funcname (intern (concat "idm-record-" (symbol-name field)))))
+    (when (fboundp funcname)
+      (funcall funcname record))))
+
+(defun gpolonkai/idm-get-field-for-account (account field)
+  "Get id-manager password for ACCOUNT."
+  (let ((db (idm-load-db))
+        (lookup-record))
+    (dolist (record (funcall db 'get-all-records) password)
+      (when (string= "WikEmacs" (idm-record-name record))
+        (setq password (gpolonkai/idm-record-get-field record field))))))
+
+(defmacro gpolonkai/idm-get-password-for-account (account)
+  `(gpolonkai/idm-get-field-for-account ,account 'password))
+
+(defmacro gpolonkai/idm-get-id-for-account (account)
+  `(gpolonkai/idm-get-field-for-account ,account 'account-id))