#!/usr/bin/env bash

export PATH=$HOME/.local/bin:/usr/local/bin:$HOME/prefix/bin:$HOME/gcc/active/bin:$PATH
export PYTHONUNBUFFERED=1

cd $HOME/APM || exit 1

test -n "$FORCEBUILD" || {
(cd APM && git fetch > /dev/null 2>&1)

newtags=$(cd APM && git fetch --tags --force | wc -l)
oldhash=$(cd APM && git rev-parse origin/master)
newhash=$(cd APM && git rev-parse HEAD)

if [ "$oldhash" = "$newhash" -a "$newtags" = "0" ]; then
    echo "$(date) no change $oldhash $newhash" >> build.log
    exit 0
fi
echo "$(date) Build triggered $oldhash $newhash $newtags" >> build.log
}

############################
# grab a lock file. Not atomic, but close :)
# tries to cope with NFS
lock_file() {
        lck="$1"
        pid=`cat "$lck" 2> /dev/null`

        if test -f "$lck" && kill -0 $pid 2> /dev/null; then
	    LOCKAGE=$(($(date +%s) - $(stat -c '%Y' "build.lck")))
	    test $LOCKAGE -gt 80000 && {
                echo "old lock file $lck is valid for $pid with age $LOCKAGE seconds"
	    }
            return 1
        fi
        /bin/rm -f "$lck"
        echo "$$" > "$lck"
        return 0
}


lock_file build.lck || {
    exit 1
}


#ulimit -m 500000
#ulimit -s 500000
#ulimit -t 1800
#ulimit -v 500000

(
date

oldhash=$(cd APM && git rev-parse HEAD)

echo "Updating APM"
pushd APM
git checkout -f master
git fetch origin
git reset --hard origin/master
Tools/gittools/submodule-sync.sh
git clean -f -f -x -d -d
git tag autotest-$(date '+%Y-%m-%d-%H%M%S') -m "test tag `date`"
popd

rsync -a APM/Tools/autotest/web-firmware/ buildlogs/binaries/

echo "Updating MAVProxy"
pushd MAVProxy
git fetch origin
git reset --hard origin/master
git show
python3 -m pip install --user .
popd

echo "Updating pymavlink"
pushd APM/modules/mavlink/pymavlink
git show
python3 -m pip install --user .
popd

githash=$(cd APM && git rev-parse HEAD)
hdate=$(date +"%Y-%m-%d-%H:%m")

(cd APM && Tools/scripts/build_parameters.sh)

(cd APM && Tools/scripts/build_log_message_documentation.sh)

(cd APM && Tools/scripts/build_docs.sh)

killall -9 JSBSim || /bin/true

# raise core limit
ulimit -c 10000000

# build in home dir, as on faster storage
export BUILD_BINARIES_PATH=$HOME/build/tmp

# exit on panic so we don't waste time waiting around
export SITL_PANIC_EXIT=1

timelimit 144000 python3 APM/Tools/autotest/autotest.py --autotest-server --timeout=143000 > buildlogs/autotest-output.txt 2>&1

mkdir -p "buildlogs/history/$hdate"

(cd buildlogs && cp -f *.txt *.flashlog *.tlog *.km[lz] *.gpx *.html *.png *.bin *.BIN *.elf "history/$hdate/")
echo $githash > "buildlogs/history/$hdate/githash.txt"

) >> build.log 2>&1

# autotest done, let's mark GTD flags
touch /tmp/.autotest.done