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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix 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.
;;;
;;; GNU Guix 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 Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu installer newt final)
  #:use-module (gnu installer final)
  #:use-module (gnu installer parted)
  #:use-module (gnu installer steps)
  #:use-module (gnu installer utils)
  #:use-module (gnu installer newt page)
  #:use-module (gnu installer newt utils)
  #:use-module (guix i18n)
  #:use-module (srfi srfi-34)
  #:use-module (srfi srfi-35)
  #:use-module (newt)
  #:export (run-final-page))

(define (run-config-display-page)
  (let ((width (%configuration-file-width))
        (height (nearest-exact-integer
                 (/ (screen-rows) 2))))
    (run-file-textbox-page
     #:info-text (G_ "Congratulations, the installation is almost over! A \
system configuration file has been generated, it is displayed just below. The \
new system will be created from this file when pression the Ok button.")
     #:title (G_ "Configuration file")
     #:file (%installer-configuration-file)
     #:info-textbox-width width
     #:file-textbox-width width
     #:file-textbox-height height
     #:cancel-button-callback-procedure
     (lambda ()
       (raise
        (condition
         (&installer-step-abort)))))))

(define (run-install-success-page)
  (message-window
   (G_ "Installation complete")
   (G_ "Reboot")
   (G_ "The installation finished with success. You may now remove the device \
with the installation image and press the button to reboot.")))

(define (run-install-failed-page)
  (choice-window
   (G_ "Installation failed")
   (G_ "Restart installer")
   (G_ "Retry system install")
   (G_ "The final system installation step failed. You can retry the \
last step, or restart the installer.")))

(define (run-install-shell)
  (clear-screen)
  (newt-suspend)
  (let ((install-ok? (install-system)))
    (newt-resume)
    install-ok?))

(define (run-final-page result prev-steps)
  (let* ((configuration (format-configuration prev-steps result))
         (user-partitions (result-step result 'partition))
         (install-ok?
          (with-mounted-partitions
           user-partitions
           (configuration->file configuration)
           (run-config-display-page)
           (run-install-shell))))
    (if install-ok?
        (run-install-success-page)
        (run-install-failed-page))))