#!/bin/sh
# replace database/tw.db_host.gz with tw.db_host_new.gz
#   $0 [-a] or $0 host1 host2 ....
#
# (c) Yunliang Yu <yu@math.duke.edu>
#set -x
####IFS=space,tab,newline##
IFS=" 	
"
PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/etc:/etc/ssh/bin:$HOME/bin
export IFS PATH
umask 077
###########################

cd databases || {
	echo "Can't cd to databases directory"; exit 1
}

tw_new_list=;
if test $# -eq 0; then
	echo "Usage: $0 [-a] or $0 host1 host2 ...."; exit 1;
elif test $1 = "-a"; then
	echo -n "Replace ALL tw.db_host.gz with tw.db_host_new.gz? [y] "; read tmp
	case $tmp in
	""|y*)
		tw_new_list="`ls tw.db_*_new.gz 2>/dev/null`";;
	esac
else
	echo -n "Replace given tw.db_host.gz with tw.db_host_new.gz? [y] "; read tmp
	case $tmp in
	""|y*)
		for k in $@; do
			i="tw.db_${k}_new.gz"
			tw_new_list="$tw_new_list $i";
		done
		;;
	esac	
fi

today=`date +%d`; # today's or the latest?
No=0;
for i in $tw_new_list; do
	j="`echo $i|sed 's/_new.gz/.gz/'`";
	if test ! -s $i; then
		echo "+++ $i not exist or size zero +++"
		continue
	fi
	Up=1;
	if test $No -eq 0; then
		log="logs/`echo $j|sed 's/tw.db_//'|sed 's/.gz//'`_$today";
		echo -n "**** View $log? (y/n/N/q)[y] "; read tmp;
		case $tmp in
		""|y*)
			less ../$log
			echo -n "*** Update $j (y/n)[y] "; read tmp1;
			case $tmp1 in
			n*)
				Up=0;;
			esac 
			;;
		N*)
			No=1;;
		q*)
			exit 0;;
		esac;
	fi
	if test $Up -eq 1; then
		if test -f $j; then
			mv $j $j-x;
		fi
		mv $i $j
		echo "=== $j ==== updated"
	else
		echo "=== $j ==== NOT updated"
	fi
done