#!/bin/bash
BUILD_LOG=~/public_html/BuildLive.out
ALWAYS_SEND_LOG=yes
LANG=C

finish() {
    [ $? != "0" ] && STATUS="Failed" || STATUS="Successful"
    if [ "$STATUS" = "Failed" ] || [ "$ALWAYS_SEND_LOG" = "yes" ]; then
    	SEND_LOG=yes
    fi
    if [ -e "$LOG" ]; then
        echo "======================= Log of livefs.sh output follows ======================="
        cat $LOG
    fi
    if [ "$SEND_LOG" = "yes" ]; then
        exec >/dev/null 2>&1
        mailx -s "LiveCD: $STATUS $STE:$FS${SUBPROJECT:+-$SUBPROJECT}${SUBARCH:+-$SUBARCH}${UBUNTU_DEFAULTS_LOCALE:+-$UBUNTU_DEFAULTS_LOCALE} build on ${ARCH}" buildd+porters < "$BUILD_LOG"
    fi
    rm -f ~/buildLiveCD.lock
    nohup ~/bin/pruneLiveCD >/dev/null 2>&1 &
}

if [ -n "$SSH_ORIGINAL_COMMAND" ]; then
    set -- $SSH_ORIGINAL_COMMAND
    [ ${1##*/} != 'BuildLiveCD' ] && echo bad command >&2 && exit 2
    shift
fi
ARCH=$(dpkg --print-architecture)
SUBARCH=""
SUBARCHARG=""
NEWSUITE="precise"
SUITES=""
PROPOSED=""
IMAGEFORMAT=""
LIVE_BUILD=false
UBUNTU_DEFAULTS_LOCALE=""

while getopts :A:s:r:d:f:pa:lu:t: name; do case $name in
    A)	ARCH="$OPTARG";;
    s)	SUBARCH="$OPTARG";;
    r)	SUBPROJECT="$OPTARG";;
    d)	NEWSUITE="$OPTARG";;
    f)	IMAGEFORMAT="$OPTARG";;
    p)	PROPOSED="-p";;
    a)	APT_SOURCE="-A $OPTARG";;
    l)	LIVE_BUILD=:;;
    u)	UBUNTU_DEFAULTS_LOCALE="$OPTARG";;
    t)	UBUNTU_TOUCH_ANDROID="$OPTARG";;
esac; done;
shift $((OPTIND-1))

if [ -n "$SUBARCH" ]; then
    SUBARCHARG="-s$SUBARCH"
fi

for s in $NEWSUITE; do
    if [ -d build-${s}-live/chroot-${s} ]; then SUITES="$SUITES $s"; fi
done
if [ -z "$SUITES" ]; then
    echo "No valid suites to build for" >&2 && exit 1
fi
for s in $SUITES; do
    case $s in
        dapper|edgy|feisty|gutsy|hardy)
            ARCHARG=""
            old_suite="yes"
            ;;
        *)
            ARCHARG="-a$ARCH"
            new_suite="yes"
            ;;
    esac
done
if [ "$new_suite" = "yes" ] && [ "$old_suite" = "yes" ]; then
    echo "Can't build images for suites older than intrepid and suites" >&2
    echo "greater than hardy at the same time, please use two invocations" >&2
    exit 1
fi
if ([ $# = 0 ] || [ "X$1" = "Xall" ]) && ! $LIVE_BUILD; then
    set -- ubuntu kubuntu kubuntu-active edubuntu xubuntu mythbuntu base
    if [ "$ARCH" = "i386" ]; then
        set -- ubuntu ubuntu-dvd ubuntu-lpia ubuntu-netbook kubuntu kubuntu-dvd kubuntu-active edubuntu edubuntu-dvd xubuntu mythbuntu base
    fi
fi

case ${ARCH} in
    hppa|sparc|powerpc) LINUX32=linux32;;
    *) LINUX32="";;
esac

if [ "`echo $@ | wc -w`" -gt "1" ]; then
    for arg in "$@"; do
        $0 $arg
    done
    exit 0
fi
FS="$1"
shift

# 12 hours should be enough for even the longest build queue to clear.
lockfile -8 -r$((12 * 60 * 60 / 8)) ~/buildLiveCD.lock || exit 1
trap "finish" 0
trap "rm -f ~/buildLiveCD.lock; exit 1" 1 2 3 15
exec > $BUILD_LOG 2>&1
set -e

for STE in $SUITES; do
    if [ -d ~/build-${STE}-live/chroot-${STE} ]; then
	sudo chroot ~/build-${STE}-live/chroot-${STE} apt-get -qq update || true
	sudo chroot ~/build-${STE}-live/chroot-${STE} apt-get -y dist-upgrade || true
	sudo chroot ~/build-${STE}-live/chroot-${STE} apt-get -y install livecd-rootfs || true
	sudo chroot ~/build-${STE}-live/chroot-${STE} apt-get -y --install-recommends install ubuntu-defaults-builder || true
    fi
done
for STE in $SUITES; do
    if cd ~/build-${STE}-live 2>/dev/null; then
	DIR=~/build-${STE}-live/chroot-${STE}/./build/
    else
	cd ~/build.live
	DIR=~/build.live/chroot-${STE}/./build/
    fi

    PUBDIR=~/public_html/LiveCD/${STE}/${FS}${SUBPROJECT:+-$SUBPROJECT}${SUBARCH:+-$SUBARCH}${UBUNTU_DEFAULTS_LOCALE:+-$UBUNTU_DEFAULTS_LOCALE}/
    mkdir -p ${PUBDIR}

    NOW=$(date +%Y%m%d)
    if [ -d ${PUBDIR}${NOW} ]; then
	typeset -i n=1; while [ -d ${PUBDIR}${NOW}.$n ]; do n=n+1; done
	NOW=${NOW}.$n
    fi
    LOG=${PUBDIR}${NOW}/livecd-${NOW}-${ARCH}.out

    rm -f ${PUBDIR}latest
    ln -sf ${PUBDIR}${NOW} ${PUBDIR}latest
    mkdir -p ${PUBDIR}${NOW}
    > ${LOG}
    ln -sf livecd-${NOW}-${ARCH}.out ${PUBDIR}${NOW}/livecd-${ARCH}.out
    if $LIVE_BUILD; then
	$LINUX32 sudo chroot ${DIR%/./*} sh -c "cd /${DIR#*/./} && rm -rf auto && mkdir -p auto && for f in config build clean; do ln -s /usr/share/livecd-rootfs/live-build/auto/\$f auto/; done" >> ${LOG} 2>&1 || true
	$LINUX32 sudo chroot ${DIR%/./*} sh -c "cd /${DIR#*/./} && lb clean --purge" >> ${LOG} 2>&1 || true
	if ! $LINUX32 sudo chroot ${DIR%/./*} sh -c "cd /${DIR#*/./} && NOW=${NOW} SUITE=${STE} PROJECT=${FS} SUBPROJECT=${SUBPROJECT} ARCH=${ARCH} SUBARCH=${SUBARCH} IMAGEFORMAT=${IMAGEFORMAT} PROPOSED=${PROPOSED:+1} lb config" >> ${LOG} 2>&1; then
	    exit 1
	fi
	COMMAND="PROJECT=${FS} SUBPROJECT=${SUBPROJECT} ARCH=${ARCH} SUBARCH=${SUBARCH} lb build"
    elif [ "$UBUNTU_DEFAULTS_LOCALE" ]; then
	COMMAND="ubuntu-defaults-image --locale ${UBUNTU_DEFAULTS_LOCALE} --arch ${ARCH} --release ${STE}"
    elif [ "$UBUNTU_TOUCH_ANDROID" ]; then
	COMMAND="/usr/sbin/ubuntu-touch-android.sh ${SUBARCH}"
    else
	COMMAND="/usr/sbin/livecd.sh ${SUBARCHARG} ${APT_SOURCE} ${PROPOSED} -d${STE} ${IMAGEFORMAT:+-f$IMAGEFORMAT} ${ARCHARG} ${IMAGEARG} ${FS}"
    fi
    if $LINUX32 sudo chroot ${DIR%/./*} sh -c "cd /${DIR#*/./} && $COMMAND" >> ${LOG} 2>&1; then
	rm -f ${PUBDIR}current
	ln -sf ${NOW} ${PUBDIR}current

	for file in ${DIR}livecd.*; do
	    if [ -f ${file} ]; then
		ext=${file##*.}
		base=${file%.*}; base=${base##*/}
		sudo chown buildd ${file}
		sudo mv ${file} ${PUBDIR}${NOW}/${base}-${NOW}-${ARCH}.${ext}
		ln -sf ${base}-${NOW}-${ARCH}.${ext} ${PUBDIR}${NOW}/${base}.${ext}
	    fi
	done

	for f in ${PUBDIR}${NOW}/livecd.*.cloop-*; do 
	    if [ -f ${f} ]; then
		target=${f%-*}
		if [ ! -f ${target} ]; then
		    for fsbs in 4096:4096 1024:65536; do
			if [ -f ${target}-${fsbs} ]; then
			    ln -sf ${target##*/}-${fsbs} ${target}
			    break
			fi
		    done
		    if [ ! -f ${target} ]; then
			best=$(ls -ld ${target}-* | sort -k5,5n| awk '{print $NF; quit}')
			ln -sf ${best##*/} ${target}
		    fi
		fi
	    fi
	done
    else
	exit 1
    fi
done