;;; tex-wizard.el --- Check the TeX configuration  -*- lexical-binding: t; -*-

;; Copyright (C) 2003-2021 Free Software Foundation, Inc.

;; Author: David Kastrup <dak@gnu.org>
;; Keywords: tex, wp, convenience

;; This file 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, or (at your option)
;; any later version.

;; This file 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 GNU Emacs; see the file COPYING.  If not, write to
;; the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
;; Boston, MA 02110-1301, USA.

;;; Commentary:

;; This checks through your TeX configuration.  Call M-x TeX-wizard RET

;;; Code:

(defun TeX-wizard nil
  (interactive)
  (switch-to-buffer "*TeX wizard*")
  (let ((wizwin (selected-window))
        (wizbuf (current-buffer)))
    (set-visited-file-name nil)
    (erase-buffer)
    (if (featurep 'tex-site)
        (insert-before-markers "AUCTeX is enabled.  Good.\n")
      (insert-before-markers "\
It appears that AUCTeX is not enabled.  AUCTeX is the main
major mode for editing TeX/LaTeX files.\n")
      (condition-case nil
          (info-other-window "(AUCTeX)")
        (error (select-window wizwin)
               (switch-to-buffer wizbuf)
               (insert-before-markers "(I am unable to find AUCTeX's info file.)\n")))
      (if (prog1 (y-or-n-p "Should I try enabling AUCTeX now? ")
            (select-window wizwin)
            (switch-to-buffer wizbuf))
          (condition-case nil
              (require 'tex-site)
            (error (insert-before-markers "AUCTeX appears not to be installed.\n")))
        (insert-before-markers "AUCTeX installation imprudently skipped.\n"))
      (when (featurep 'tex-site)
        (when (prog1 (yes-or-no-p (format "Also enable AUCTeX in `%s'" user-init-file))
                (select-window wizwin)
                (switch-to-buffer wizbuf))
          (write-region "\
;;; Enable AUCTeX
\(require 'tex-site)\n" nil user-init-file t))))
    (if (memq 'turn-on-reftex
              (if (featurep 'tex-site)
                  (and (boundp 'LaTeX-mode-hook) LaTeX-mode-hook)
                (and (boundp 'latex-mode-hook) latex-mode-hook)))
        (insert-before-markers "RefTeX is enabled.  Good.\n")
      (insert-before-markers "\
It appears that RefTeX is not enabled.  RefTeX is a mode
that will greatly facilitate the management of labels
and bibliographics references.\n")
      (condition-case nil
          (info-other-window "(RefTeX)")
        (error (select-window wizwin)
               (switch-to-buffer wizbuf)
               (insert-before-markers
                "(I am unable to find RefTeX's info file.)\n")))
      (when (prog1 (yes-or-no-p
                    (format "Enable RefTeX in `%s'" user-init-file))
              (select-window wizwin)
              (switch-to-buffer wizbuf))
        (add-hook 'LaTeX-mode-hook #'turn-on-reftex)
        (add-hook 'latex-mode-hook #'turn-on-reftex)
        (condition-case nil
            (write-region "\
;;; Enable RefTeX
\(add-hook 'LaTeX-mode-hook #'turn-on-reftex)
\(add-hook 'latex-mode-hook #'turn-on-reftex)
" nil user-init-file t)
          (error (insert-before-markers
                  (format "Unable to write to file `%s'\n" user-init-file))))))
    (when (and (featurep 'tex-site)
               (boundp 'LaTeX-mode-hook)
               (memq #'turn-on-reftex LaTeX-mode-hook))
      (if (and (boundp 'reftex-plug-into-AUCTeX)
               reftex-plug-into-AUCTeX)
          (insert-before-markers
           "RefTeX appears to be configured for use with AUCTeX.\n")
        (require 'reftex)
        (insert-before-markers "\
It appears that RefTeX is not configured to cooperate with
AUCTeX.  Please configure it using the menus, save for future
sessions, then press the finish button.")
        (customize-variable-other-window 'reftex-plug-into-AUCTeX)
        (set (make-local-variable 'custom-buffer-done-kill) t)
        (add-hook 'kill-buffer-hook #'exit-recursive-edit nil t)
        (recursive-edit)
        (select-window wizwin)
        (switch-to-buffer wizbuf))))
  (insert-before-markers "That's all!\n"))


(provide 'tex-wizard)
;;; tex-wizard.el ends here