#!/bin/bash
#
# Script to facilitate setting the 
# date and time on the Ben NanoNote
# Copyright 2011 by Warren "Freemor" Pattison 
# 
# This program 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.
#
# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

# First we set up a few things

VERSION="0.0.5"
BACKTITLE="Ben NanoNote Time/Date Utility"
TIMEZONE=""
#DATEFORMAT="%Y%m%d"
#TIMEFORMAT="%H%M"
setfont /usr/share/kbd/consolefonts/kernel-6x11-font  # size down the font so the Calendar widget fits.

# Check For the dialog program

if [ ! -e /usr/bin/dialog ]; then
   echo "We need the dialog program to do this nicely."
   echo "please install it with:"
   echo "opkg install dialog"
   echo
   echo "and try again..."
   exit 1
fi

# Intro and Instructions

dialog --backtitle "$BACKTITLE" --cr-wrap --trim --msgbox "Use this utility to set the time, date\n\
and timezone on your NanoNote.\n\n\
Use the TAB key to move between fields.\n\
use the directional pad to set the value.\n" 0 0 

# Set Timezone first as that requires a reboot

TZ=`cat /etc/TZ`

# Is timezone right?

dialog --backtitle "$BACKTITLE" --yesno "Timezone is: "$TZ" \nIs this correct?" 0 0

if [ "$?" != "0" ]; then
	dialog --backtitle "$BACKTITLE" --menu "Select your Region:" 0 0 8 Africa "" America "" Antarctica "" Arctic "" Asia "" Atlantic "" Australia "" Europe "" Indian "" Pacific "" 2>/tmp/result
	ZONES=( $(grep -i $(</tmp/result) timezones | cut -f2- -d/) )
	dialog --backtitle "$BACKTITLE" --menu "Select the nearest City:" 0 0 8 `for ITEM in $(seq 0 $((${#ZONES[@]} - 1))); do echo ${ZONES[$ITEM]#*|}  ${ZONES[$ITEM]%|*}; done` 2>/tmp/result 
	TIMEZONE=$(</tmp/result)
	#echo $TIMEZONE
	#exit 1
	#Commit Timezone string to firmware
	uci set system.@system[0].timezone="$TIMEZONE"
	uci commit system
	#Clean-up
	rm /tmp/result
	#ASK to reboot... (Pet peeve.. never reboot by default)
	dialog --backtitle "$BACKTITLE" --yesno "Timezone has been set\nSystem will now restart so Linux can adjust.\n\n Reboot?" 0 0
	if [ "$?" == 0 ]; then  
		reboot
		exit 0
	else
		exit 0
	fi
fi


# Get the Date

dialog --backtitle "$BACKTITLE" --calendar "Set the date" 0 0 2>/tmp/time

# Exit if user chose to cancel
if [ "$?" != "0" ]; then
   exit 1
fi

# Get the Time

dialog --backtitle "$BACKTITLE" --timebox "Set the time" 0 0 2>>/tmp/time

# Exit if user chose to cancel
if [ "$?" != "0" ]; then
   exit 1
fi

# Format the input

DAY=`cut -s -f1 -d '/' /tmp/time`
MONTH=`cut -s -f2 -d '/' /tmp/time`
YEAR=`cut -s -f3 -d '/' /tmp/time`
HOURS=`cut -s -f1 -d ':' /tmp/time`
MINUTES=`cut -s -f2 -d ':' /tmp/time`

SET=$YEAR$MONTH$DAY$HOURS$MINUTES

echo $SET


# Set and apply to internal clock

date $SET
hwclock --systohc --utc
dialog --backtitle "$BACKTITLE" --infobox "The time and date have now been\nset and saved.\n\nenjoy" 0 0


# Clean Up

rm /tmp/time