;;; treemacs.el --- A tree style file viewer package -*- lexical-binding: t -*-

;; Copyright (C) 2020 Alexander Miller

;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:
;;; Implementation for logging messages.

;;; Code:

(defvar treemacs--no-messages nil
  "When set to t `treemacs-log' will produce no output.
Not used directly, but as part of `treemacs-without-messages'.")

(defmacro treemacs-without-messages (&rest body)
  "Temporarily turn off messages to execute BODY."
  (declare (debug t))
  `(let ((treemacs--no-messages t))
     ,@body))

(defmacro treemacs--do-log (prefix msg &rest args)
  "Print a log statement with the given PREFIX and MSG and format ARGS."
  `(unless treemacs--no-messages
     (message "%s %s" ,prefix (format ,msg ,@args))))

(defmacro treemacs-log (msg &rest args)
  "Write an info/success log statement given format string MSG and ARGS."
  (declare (indent 1))
  `(treemacs--do-log
    (propertize "[Treemacs]" 'face 'font-lock-keyword-face)
    ,msg ,@args))

(defmacro treemacs-log-failure (msg &rest args)
  "Write a warning/failure log statement given format string MSG and ARGS."
  (declare (indent 1))
  `(treemacs--do-log
    (propertize "[Treemacs Failure]" 'face '((:inherit warning :weight bold)))
    ,msg ,@args))

(defmacro treemacs-log-err (msg &rest args)
  "Write an error log statement given format string MSG and ARGS."
  (declare (indent 1))
  `(treemacs--do-log
    (propertize "[Treemacs Error]" 'face '((:inherit warning :weight bold)))
    ,msg ,@args))

(provide 'treemacs-logging)

;;; treemacs-logging.el ends here