;; notmuch-print.el --- printing messages from notmuch.
;;
;; Copyright © David Edmondson
;;
;; This file is part of Notmuch.
;;
;; Notmuch 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.
;;
;; Notmuch 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 Notmuch.  If not, see <http://www.gnu.org/licenses/>.
;;
;; Authors: David Edmondson <dme@dme.org>

(defcustom notmuch-print-mechanism 'lpr
  "How should printing be done?"
  :group 'notmuch
  :type '(choice
	  (const :tag "Use lpr" lpr)
	  (const :tag "Use ps-print" ps-print)
	  (const :tag "Use muttprint" muttprint)
	  (function :tag "Using a custom function")))

(defvar notmuch-print-mechanism-map
  '((lpr . notmuch-print-lpr)
    (ps-print . notmuch-print-ps-print)
    (muttprint . notmuch-print-muttprint)))

(defmacro notmuch-print-with-file (filename &rest body)
  `(with-temp-buffer
     (insert-file-contents ,filename)
     (setq buffer-modified-p nil)
     ,@body))

(defun notmuch-print-lpr (filename)
  (notmuch-print-with-file filename
			   (lpr-buffer)))

(defun notmuch-print-ps-print (filename)
  (notmuch-print-with-file filename
			   (ps-print-buffer)))

(defun notmuch-print-muttprint (filename)
  (shell-command
   (concat "cat " (shell-quote-argument filename) " | muttprint")))

(defun notmuch-print-message (filename)
  (let ((fn
	 (cond
	  ((functionp 'notmuch-print-mechanism)
	   'notmuch-print-mechanism)
	  ((assoc notmuch-print-mechanism notmuch-print-mechanism-map)
	   (cdr (assoc notmuch-print-mechanism notmuch-print-mechanism-map)))
	  (t
	   (error "No printing mechanism found")))))
    (funcall fn filename)))

;;

(provide 'notmuch-print)