#!/bin/sh
#
# Helper for image creation
#
PUBDIRJIG=$1
RSYNC_TARGET=$2
ARCH=$3

LOG=~/build.stretch/log/$ARCH.iso_run
HOSTNAME=`hostname -f`
LOCK=~/iso_run.lock
START=`date -u +%H:%M:%S`

# Check to see if another sync is in progress
if lockfile -! -l 43200 -r-1 "$LOCK"; then  
    echo $HOSTNAME is not doing another iso_run, lock file $LOCK exists
    exit 1
fi
trap "rm -f $LOCK > /dev/null 2>&1" exit  

COPY_START=`date -u +%H:%M:%S`

rm -f $LOG

# Given an ISO image:
# 1. create the torrent file if desired (only for release builds)
# 2. copy all of them into place
process_iso() {
    FILE=$1
    OUTDIR=$2

    echo $OUTDIR/$FILE >> $LOG
    cp -a $FILE $OUTDIR/$FILE

    if [ "$RELEASE_BUILD"x != ""x ] ; then
	~/build.stretch/mktorrent $FILE >> $LOG
	BTFILE=`echo $FILE.torrent | sed 's/iso-/bt-/'`
	echo $OUTDIR/$BTFILE >> $LOG
	cp -a $BTFILE $OUTDIR/$BTFILE
    fi
}

# Poor man's rsync, but with some local optimisations
copy_files() {
    SRC=$1
    TARGET=$2
    ARCHES=$3

    DISKTYPES="cd dvd bd dlbd"
    DIRTYPES="iso jigdo list"

    # Only make torrent files and dirs for release builds
    if [ "$RELEASE_BUILD"x != ""x ] ; then
	DIRTYPES="$DIRTYPES bt"
    fi

    CURRENT=`pwd`
    cd $SRC
    for ARCH in $ARCHES
    do
        for DISKTYPE in $DISKTYPES; do
            for DIRTYPE in $DIRTYPES; do
                mkdir -p -m775 $TARGET/$ARCH.tmp/$DIRTYPE-$DISKTYPE
            done
        done

        cd $ARCH
        find . -name '*.jigdo' -o -name '*.template' \
	    -o -name '*.list.gz' -o -name '*SUMS*' | \
            xargs tar cf - | (cd $TARGET/$ARCH.tmp/ && tar xvf -) >> $LOG
	
        # Only make torrent files and dirs for release builds
        rm -rf bt-*
        for DISKTYPE in $DISKTYPES; do
	    if [ "$RELEASE_BUILD"x != ""x ] ; then
		mkdir bt-$DISKTYPE
	    fi
	    for FILE in iso-$DISKTYPE/*.iso; do
		if [ -e $FILE ] ; then
		    process_iso $FILE $TARGET/$ARCH.tmp
		fi
	    done
	    if [ "$RELEASE_BUILD"x != ""x ] ; then
		for FILE in $TARGET/$ARCH.tmp/iso-$DISKTYPE/*SUMS*; do
		    if [ -e $FILE ] ; then
			cp -al $FILE $TARGET/$ARCH.tmp/bt-$DISKTYPE/
		    fi
		done
	    fi
	done

	if [ "$RELEASE_BUILD"x = ""x ] ; then
	    # Only populate the HEADER.html file for regular weekly
	    # builds; we don't want it for releases
            HUM_DATE=`date -u`
            sed "s/ARCH/$ARCH/g;s/DATE/$HUM_DATE/g" ~/build.stretch/weekly.html \
		> $TARGET/$ARCH.tmp/HEADER.html
	fi

	mkdir -p $TARGET/$ARCH.tmp/log/$DATE
	cp *.log $TARGET/$ARCH.tmp/log/$DATE
	ln -sf $DATE $TARGET/$ARCH.tmp/log/success
	
	# Now clean up any directories without any real content
	# (i.e. empty dir, or just containing checksum files)
	for dir in $TARGET/$ARCH.tmp/*-* ; do
	    num=`ls -l $dir | grep -v -e SUMS -e total | wc -l`
	    if [ $num = 0 ] ; then 
		rm -rf $dir
	    fi
	done	

        cd ..

    done
    cd $CURRENT
}

copy_files $PUBDIRJIG $RSYNC_TARGET $ARCH

echo "$START: Starting $ARCH sync from $PUBDIRJIG to $RSYNC_TARGET" >> $LOG
if [ -e $RSYNC_TARGET/$ARCH ] ; then
    mv -f $RSYNC_TARGET/$ARCH $RSYNC_TARGET/$ARCH.old
fi
mv $RSYNC_TARGET/$ARCH.tmp $RSYNC_TARGET/$ARCH
rm -rf $RSYNC_TARGET/$ARCH.old &

# Update the trace file now to force a sync on free.hands.com after each arch
mkdir -p $RSYNC_TARGET/trace
date -u > $RSYNC_TARGET/trace/cdimage.debian.org

END=`date -u +%H:%M:%S`
echo "$ARCH synced across to $RSYNC_TARGET; started at $START, copying started at $COPY_START, ended at $END"
echo "$END: Finished" >> $LOG
