;; -*- emacs-lisp -*-
;;; mst-arch.el --- functions for managing arch projects

;; Author: Mark Triggs <mst@dishevelled.net>

;; 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 2, 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., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Commentary:

;; Nothing fancy. Just a few hacks to save me time.

;;; Code:

(defun arch-diff-buffer ()
  (interactive)
  (shell-command (format "tla file-diffs %s" (buffer-file-name))
                 "*arch diffs*" nil))

(defun arch-make-log ()
  (interactive)
  (find-file (subseq (shell-command-to-string "tla make-log") 0 -1))
  (let ((map (copy-keymap (current-local-map))))
    (define-key map (kbd "C-c C-c") (lambda () (interactive)
                                      (save-buffer)
                                      (arch-commit)
                                      (kill-buffer nil)))
    (use-local-map map)))

(defun arch-commit ()
  (interactive)
  (shell-command "tla commit" "*arch commit*"))

(defmacro with-working-directory (dir &rest body)
  (let ((old (gensym)))
    `(let ((,old default-directory))
       (cd ,dir)
       (unwind-protect
           (progn ,@body)
         (cd ,old)))))

(put 'with-working-directory 'lisp-indent-function 1)


(defvar *arch-pending-setup* nil)
(defun arch-import ()
  (interactive)
  (let ((base (read-file-name "Project root: "
                              (file-name-directory (buffer-file-name))))
        (project (read-from-minibuffer "Project name (eg hello--dev--1.0): ")))

    (find-name-dired base "*")
    (setq mode-line-format
          "Select files to add with 'm'. Press C-c C-c to finish")

    (let ((map (copy-keymap (current-local-map))))
      (define-key map (kbd "C-c C-c")
        `(lambda ()
           (interactive)

           (with-working-directory ,base
             (shell-command (format "tla init-tree %s" ,project)))

           (let ((files (dired-get-marked-files)))
             (mapc (lambda (file) (shell-command (format "tla add %s" file)))
                   files)
             (kill-buffer (current-buffer)))

           (setq *arch-pending-setup* ,base)
           (arch-do-import)))

      (use-local-map map))))

(defun arch-do-import ()
  (interactive)
  (if *arch-pending-setup*
      (with-working-directory *arch-pending-setup*
        (cond ((zerop (shell-command "tla tree-lint" "*tree-lint*"
                                     "*tree-lint*"))
               (shell-command "tla import --setup")
               (setq *arch-pending-setup* nil))
              (t (message (concat "Tree lint failed. Please correct and run"
                                  " M-x arch-do-import (see buffer "
                                  "*tree-lint*)")))))
    (error "Nothing to do!")))

(provide 'mst-arch)
;;; mst-arch.el ends here