#!/bin/bash
#  $HeadURL$ $LastChangedRevision$
PROGNAME=`basename $0`
SANDPIT=`pwd`
. $(ade-config ade_share_prefix)/include/adetestsupport.sh

strip_variant_output()
{
    sed -e "s@$SANDPIT/root/[0-9][0-9]*@BLANKED_BY_$PROGNAME@"
}

#  WARNING: much of this code is reproduced in another test of fadscan.
echo "creating base directories ..."
mkdir $SANDPIT/{root,scans,elsewhere,etc,state,log}

#  Run test for ten seconds (should be enough time to trigger error)

TEST_DURATION=10
END_TIME=$(($(date '+%s') + $TEST_DURATION))

echo "starting scan loop in background ..."
{
    I=0
    while [ $(date '+%s') -lt $END_TIME ]; do
        #echo "S: $I"
        find $SANDPIT/root | fadscan --log-dir=$SANDPIT/log --state-dir=$SANDPIT/state -i test - || true
        I=$(($I + 1))
    #  Normally we would say '| sort -u' to verify that at least one message appeared, but
    #  we expect this message several times, so we use 'head -3' instead.
    done 2>&1 | strip_variant_output | head -3
    #  Can't report end of loop 'cos can't guarantee this loop finishes before the other one.
    #echo "done scanning loop"
} &
KILL_PIDS="$KILL_PIDS $!"

echo "starting fiddling loop in background ..."
{
    #  make the removal of $OLD_I work
    touch $SANDPIT/root/0
    OLD_I=0
    I=1
    
    while [ $(date '+%s') -lt $END_TIME ]; do
        #echo "F: $I"
        touch $SANDPIT/root/$I
        rm -f $SANDPIT/root/$OLD_I
        OLD_I=$I
        I=$(($I + 1))
    done

    #  clean up leftovers
    rm -f $SANDPIT/root/$I
    #  Can't report end of loop 'cos can't guarantee this loop finishes before the other one.
    #echo "done fiddling loop"
} &
KILL_PIDS="$KILL_PIDS $!"

#  Ensure if user kills us that the backgrounded processes don't hang around and
#  start outputting shell-init errors 'cos their $PWD disappeared.
trap "kill $KILL_PIDS; wait" 2

wait
echo "all done"