#!/bin/bash
#
# $Header: /CVSROOT/public/scylla-charybdis/md5backup/bin/sc-setup.sh,v 1.2 2006/10/03 21:16:33 tino Exp $
#
# Just run it after bin/dobackup.sh
# It does the rest of the setup for you.
#
# $Log: sc-setup.sh,v $
# Revision 1.2  2006/10/03 21:16:33  tino
# See Changelog, commit for dist
#
# Revision 1.1  2004/09/29 00:02:35  tino
# added

#if [ -z "$TINO_DEVEL" ]; then echo "This script is not ready yet!"; exit; fi

MD5B="/backup/md5backup"
HERE="/backup/charybdis"

BINS="charybdis"
CONF="sc-move.conf"

if [ .root != ".`id -un`" ]
then
	echo "$0 must be called as root.  SU to root and try again." >&2
	exit 1
fi

presskey()
{
echo -n "Press return to continue, ^D to abort -> "
read || exit 1
echo
}

pressy()
{
echo -n "+-+ $* (y/N)? "
read || exit 1
[ .y = ".$REPLY" ] || exit 1
echo
}

pressyonce()
{
povar="$1"
poval="$2"
potxt="$3"
shift 3
[ -n "${!povar}" ] && return
echo
p="+-+"
for a
do
	echo "$p $a"
	p="! !"
done |
awk -v VAL="$poval" '{ gsub(/###/,VAL); print; }'
pressy "$potxt"
eval $povar=1
}

error()
{
  echo "error: $*" >&2
  exit 1
}

isme()
{
cmp -s "$0" "$1"
}

realpath()
{
(
cd "$1" || exit 1
/bin/pwd
)
}

find_bin()
{
find "$@" -name "$BINS" |
{
while read n
do
	d="`dirname "$n"`"
done
echo "$d"
}
}

do_mkdir()
{
if [ ! -e "$1" ]
then
	pressyonce dirs "$1" "$@" "Shall I create missing directories" "Directory ### is missing."
	mkdir "$1" && echo "mkdir $1" || error "cannot mkdir $1"
fi
[ ! -d "$1" ] && error "is not a directory: $a"
}

do_softlink()
{
TO="$2"
[ -n "$TO" ] || TO="$HERE/`basename "$1"`"
if [ ! -e "$TO" ]
then
	pressyonce softlinks "$TO" "Shall I create missing softlinks" "Softlink ### is missing."
	ln -s "$1" "$TO" && echo "softlink $TO" || error "cannot create softlink $TO"
fi
[ ! -L "$TO" ] && error "is not a softlink: $TO"
}

info()
{
echo "+-+ From screen or ptybuffer run"
echo "! !"
echo "! ! $HERE/sc-loop.sh"
echo "! !"
echo "! ! This runs the permanent backup loop"
echo "! !"
echo "! ! First:"
echo "! ! Use the command 'setpw' to set the mysql root password."
echo "+-+ Use a dummy password if you don't want a mysql backup."
}

pressy "This script is not ready yet, continue"

echo

echo "+-+ This does the setup of networking part of md5backup."
echo "! !"
echo "! ! Note that this part is a quick hack and will be"
echo "! ! considered obsolete in (some far) future, when the"
echo "! ! networking option of md5backup (or the successor of"
echo "+-+ it will evolve.  However for now it's all there is."

while [ ! -d "$MD5B" ]
do
	echo "+-+ The directory $MD5B"
	echo "! ! does not exist.  This means, you have never run"
	echo "! !"
	echo "! ! bin/dobackup.sh"
	echo "! !"
	pressy "Shall I run it now"
	bin/dobackup.sh
	echo
	echo "+=+ OK, it has been run, continuing with sc-setup.sh"
	echo
done 

do_mkdir "$HERE"
do_mkdir "$MD5B/ln1"
do_mkdir "$HERE/tmp"
do_mkdir "$HERE/md5move"

do_softlink ../md5backup/bin/sc-loop.sh
do_softlink ../md5backup/bin/sc-backup.sh
do_softlink ../md5backup/bin/sc-move.sh
do_softlink ../md5backup/bin/sc-mysql.sh

MYDIR="$HERE/md5move/mysql"

if [ ! -x "$HERE/bin/$BINS" ]
then
	bindir="`dirname "$0"`"
	bindir="`find_bin /usr/local "$HOME/bin" "$bindir"/../../scylla-charybdis-* "$@"`"
	if [ -z "$bindir" ]
	then
		echo
		echo "+-+ $BINS cannot be located on various places."
		echo "! ! Please give a path to it on the commandline."
		echo "+-+ STOP WITH ERROR"
		exit 1
	fi
	bindir="`realpath "$bindir"`"
	do_softlink "$bindir" "$HERE/bin"
fi

echo

info
dirs=
do_mkdir "$MYDIR" "The mysql backup directory is not created yet." "Without this directory mysql is not backed up."

echo