#! /bin/bash

# Butchered version of snapshot
# Can only run on the shell compile farm server
# Will always create a snapshot of HEAD
# If want multiple snapshots, just run with "sfsnapshot [branch ...]"
# Assumes:
#  ssh setup to send to shell.sf.net and $CF without password prompt
#  the compile server has all the prerequisites stated at http://nagiosplug.sourceforge.net/developer-guidelines.html
# Install in cron with something like:
#  47 * * * * $HOME/bin/mail_error -o $HOME/sfsnapshot.out -m tonvoon@users.sf.net sfsnapshot r1_3_0

function die { echo $1; exit 1; }

# This makes the distribution. Expects $1 as branches/name, otherwise uses trunk
function make_dist {
	if [[ -n $1 ]] ; then
		svn_url_suffix=$1
		name=${1##*/}
	else
		svn_url_suffix="trunk"
		name="trunk"
	fi
	v="$name-"
	
	# Get compile server to do the work
	# Variables will be expanded locally before being run on $CF
	ssh $CF <<EOF
	set -x
	PATH=$PATH:/usr/local/bin
	[[ ! -d $COMPILE_DIR/$name ]] && mkdir -p $COMPILE_DIR/$name
	cd $COMPILE_DIR/$name

	# Cannot use cvs export due to conflicts on second run - think this is better for cvs server
	svn export https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/$svn_url_suffix $PROJECT

	cd $PROJECT

	tools/setup

	./configure

	# Make the Nagiosplug dist tarball
	make dist VERSION=$v$DS RELEASE=snapshot

	# May fail if file not generated - do not trap
	mv *.gz $IN

	rm -rf $COMPILE_DIR
	# End ssh
EOF
}

# Set working variables
PROJECT=nagiosplug

# This is local to the compile server for faster compile
COMPILE_DIR=/tmp/tonvoon/tmp_snapshot

#  Needs to be on NFS so gz file can be read on the compile shell server
IN=${HOME}/tmp_snapshot

# Where to place the generated files
OUT_SERVER="tonvoon@web.sourceforge.net"
OUT="/home/groups/n/na/nagiosplug/htdocs/snapshot"

# Make sure prereqs are satisfied on server!
CF="localhost"
DS=`date -u +%Y%m%d%H%M`

# Setup home directory area
[[ ! -d $IN ]] && mkdir -p $IN

# Make dists for HEAD and any others in command parameters
make_dist
for i in $* ; do
	make_dist $i
done

# Create MD5 sum
cd $IN
cat <<-END_README > README
This is the daily SVN snapshot of nagiosplug, consisting of the SVN trunk
and any other branches.

The nagios-plugins-HEAD.tar.gz link will always go to the latest trunk snapshot
(name kept for existing tinderbox scripts to link correctly).

The MD5SUM is:
END_README
md5sum *.gz | tee -a README > MD5SUM


# Check for *.gz files locally (expect NFS between cf shell server and $CF)
set -x
cd $IN
files=$(ls *.gz 2>/dev/null)
[[ -z $files ]] && die "No files created"
head_file=$(cd $IN && ls -rt *-trunk-*.gz | head -1 2>/dev/null)
cat <<-EOF > /tmp/batchfile.$$
cd $OUT
rm *.gz
put *.gz
ln $head_file nagios-plugins-HEAD.tar.gz
put MD5SUM
put README readme
EOF

# Do the actual transfer
# Have to put README down as readme because SF's apache server appears to block README files
sftp -b /tmp/batchfile.$$ $OUT_SERVER

rm -f $files /tmp/batchfile.$$

# Work out success or failure
expected=$(($# + 1))
set -- $files
[[ $# -ne $expected ]] && die "Expected $expected, got $#"
exit 0