;;; 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 timezone)
  #:use-module (gnu installer steps)
  #:use-module (gnu installer timezone)
  #:use-module (gnu installer newt page)
  #:use-module (guix i18n)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-26)
  #:use-module (srfi srfi-34)
  #:use-module (srfi srfi-35)
  #:use-module (ice-9 match)
  #:use-module (ice-9 receive)
  #:use-module (newt)
  #:export (run-timezone-page))

;; Information textbox width.
(define info-textbox-width (make-parameter 40))

(define (fill-timezones listbox timezones)
  "Fill the given LISTBOX with TIMEZONES. Return an association list
correlating listbox keys with timezones."
  (map (lambda (timezone)
         (let ((key (append-entry-to-listbox listbox timezone)))
           (cons key timezone)))
       timezones))

(define (run-timezone-page zonetab)
  "Run a page displaying available timezones, grouped by regions. The user is
invited to select a timezone. The selected timezone, under Posix format is
returned."
  (define (all-but-last list)
    (reverse (cdr (reverse list))))

  (define (run-page timezone-tree)
    (define (loop path)
      ;; XXX: Translation of time zones isn't perfect here because the
      ;; "iso_3166-1" domain contains translation for "territories" (like
      ;; "Antarctic") but not for continents (like "Africa").
      (let ((timezones (locate-children timezone-tree path)))
        (run-listbox-selection-page
         #:title (G_ "Timezone")
         #:info-text (G_ "Please select a timezone.")
         #:listbox-items timezones
         #:listbox-item->text (cut gettext <> "iso_3166-1")
         #:button-text (if (null? path)
                           (G_ "Exit")
                           (G_ "Back"))
         #:button-callback-procedure
         (if (null? path)
             (lambda _
               (raise
                (condition
                 (&installer-step-abort))))
             (lambda _
               (loop (all-but-last path))))
         #:listbox-callback-procedure
         (lambda (timezone)
           (let* ((timezone* (append path (list timezone)))
                  (tz (timezone->posix-tz timezone*)))
             (if (timezone-has-child? timezone-tree timezone*)
                 (loop timezone*)
                 tz))))))
    (loop '()))

  (let ((timezone-tree (zonetab->timezone-tree zonetab)))
    (run-page timezone-tree)))
ages/java-compression.scm?id=51087d51df20b89cf081aaa895efadbb73e6550b'>gnu: maven: Install from pom file.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2020-07-17 04:12:43 +0200'>2020-07-17</span></td><td><a href='/guix/commit/gnu/packages/java-compression.scm?id=02ed96dccf4764dc707bcfcb523b24cf31ed2a79'>gnu: java-plexus-archiver: Update to 4.2.2.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2020-05-17 01:50:30 +0200'>2020-05-17</span></td><td><a href='/guix/commit/gnu/packages/java-compression.scm?id=d308bc01e171f327084bfaa9fe79fb31fe662669'>gnu: java-xz: Remove duplicate definition.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2020-03-13 05:36:09 +0100'>2020-03-13</span></td><td><a href='/guix/commit/gnu/packages/java-compression.scm?id=287e3d312440a103e8ca1e14b5b09a0ce0124e5e'>gnu: java-iq80-snappy: Don't use unstable tarball.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-03-13 05:36:09 +0100'>2020-03-13</span></td><td><a href='/guix/commit/gnu/packages/java-compression.scm?id=e2528a3cc1819d3fe24880c5cfec74f075d5f820'>gnu: java-snappy@1.0: Don't use unstable tarball.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-03-12 04:57:40 +0100'>2020-03-12</span></td><td><a href='/guix/commit/gnu/packages/java-compression.scm?id=0308944ab06a103791c853743c88280a2abc114f'>gnu: java-snappy: Don't use unstable tarball.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-03-12 04:57:39 +0100'>2020-03-12</span></td><td><a href='/guix/commit/gnu/packages/java-compression.scm?id=ca0fe294d65aff8bd1b11d0c81e968870c0f1084'>gnu: java-snappy: Update to 1.1.7.3.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>