#!/bin/bash
# This script starts LyX, and restarts LyX if it is closed
# it logs all output, including backtraces to development/keystest/out/GDB

#Setting the following may give better screen shots
#gconftool-2 /apps/metacity/general/compositing_manager -s -t bool true

DIRNAME0=`dirname "$0"`
OUTDIR="$DIRNAME0/out"
ROOT_OUTDIR="$DIRNAME0/out"
THIS_PID=$$


BORED_AFTER_SECS=3600 #If we have spend more than 3600 secs (an hour) replaying a file, without learning anything new, go and start looking for more bugs instead

#############################
# This section of code is LyX Specific
#############################

if [ ! -e lib/doc.orig ]
then
	mv lib/doc lib/doc.orig
fi

ensure_cannot_print () {
lpq && ( 
	echo We can print, this is bad!
	echo use lpadmin to stop keytest from destroying a forest.
	full_exit
	sleep 999999 ; read
)
}

extras_save () {
 for f in `ls lib/doc`
 do
	if [ lib/doc/$f -nt lib/doc.orig/$f -o ! -e lib/doc.orig/$f ]
	then 
		echo making doc dir $OUTDIR/$SEC.doc
		mkdir -p $OUTDIR/$SEC.doc
		cp -a lib/doc/$f $OUTDIR/$SEC.doc/
	fi
 done
}

extras_prepare () {
	mkdir -p lib/doc/
	rm lib/doc/*.lyx
	cp -p lib/doc.orig/*.lyx lib/doc/
}

get_crash_id () {
  name=`(cat $GDB | grep -o ' in lyx::[[:alnum:]:]*' ; cat $GDB | grep -o ' [ai][nt] [[:alnum:]:]*' ) | head -n3 | sed s/in// | sed 's/ //g'`
  echo $name | sed 's/ /__/g'
}

calc_confirm_file() {
	id=`get_crash_id`
	echo "$ROOT_OUTDIR/$id.reproduced"
}

full_exit() {
	echo attempting to exit this entire script... normal exit may just exit one function

	kill $THIS_PID
	sleep 1
	echo We should not get this far
	sleep 1
	kill -9 $THIS_PIS
	echo We really should not get this far
	exit
}

###########################

get_pid () {
	echo getting pidof "$1" 1>&2
	PID=`ps a"$2" | grep "$1" | grep -v grep | sed 's/^ *//g'|  sed 's/ .*$//'`
	echo "$PID" | ( grep " " > /dev/null && ( echo too many PIDs 1>&2 ; full_exit ) )
	nPIDs=`echo PID "$PID" | wc -l`
	if [ "$nPIDs" != "1" ]
	then 
		echo autolyx: Wrong number of PIDs "$nPIDs" 1>&2
	fi
	echo "$PID"
}

try_replay () {
	id=`get_crash_id`
	echo CRASH_ID 
	export CONFIRM_FILE=`calc_confirm_file`
	if [ ! -e "$CONFIRM_FILE" ]
	then
		echo $CONFIRM_FILE does not exist
		echo This bug appears not to have been reproduced before
		echo Will try to reproduce now
		echo
		do_replay
		echo 
		echo Finished attempt at replay
	else
		echo $CONFIRM_FILE exists
		echo This bugs has already been reproduced
		echo Will not attempt to reproduce again
	fi
}

do_replay() {
	(REPLAYFILE="$KEYCODEpure" TAIL_LINES=25 MAX_TAIL_LINES=10000 bash "$0")&
	TEST_PID="$!"
	echo Backgrounded $TEST_PID
	echo waiting for $TEST_PID to finish
	wait "$TEST_PID" 
}

do_queued_replays() {
for f in `ls development/keytest/out/toreplay/*KEYCODEpure`
do
	if [ ! -e "$f.replay/last_crash_sec" ]
	then
		#./development/keytest/killtest
		killall lyx
		sleep 1
		killall -9 lyx
		KEYCODEpure="$f" do_replay
	fi
done
}


if [ ! -z "$REPLAYFILE" ]
then
	echo REPLAYMODE
	OUTDIR="$REPLAYFILE.replay/"
	mkdir -p $REPLAYFILE.replay/ || full_exit
	export KEYTEST_INFILE=$REPLAYFILE
	if [ ! -e "$REPLAYFILE" ]
	then
		echo "$REPLAYFILE" does not exist
		echo exiting
		full_exit 1
	fi
else
	do_queued_replays
	echo RANDOM MODE
fi

get_pid [0-9].x-session-manager"$" x
export X_PID=`get_pid [0-9].x-session-manager x`
echo X_PID $X_PID

export TAIL_LINES=$TAIL_LINES
echo TL $TAIL_LINES
	

BAK="$OUTDIR/backup"
mkdir -p $BAK

#rename other windows to avoid confusion.
wmctrl -N __renamed__ -r lyx
wmctrl -N __renamed__ -r lyx
wmctrl -N __renamed__ -r lyx
wmctrl -N __renamed__ -r lyx
export PATH=`cd $DIRNAME0; pwd`/path:$PATH
(
echo TTL $TAIL_LINES

LAST_EVENT=`date +%s` # Last time something interesting happened. If nothing interesting has happened for a while, we should quit.

ensure_cannot_print
echo X_PID $X_PID
export X_PID=`get_pid [0-9].x-session-manager"$" x`
echo PATH $PATH
while true
do
 echo Currently running autolyx PID=$$
 if [ ! -z "$TAIL_LINES" ] 
 then
  echo TAIL_LINES: "$TAIL_LINES"
  TAIL_FILE=$OUTDIR/tail_"$TAIL_LINES"
  tail -n "$TAIL_LINES" "$REPLAYFILE" > $TAIL_FILE
  KEYTEST_INFILE=$TAIL_FILE
  MAX_DROP=0
 else
  MAX_DROP=0.2
 fi
 export MAX_DROP
  SEC=`date +%s`
 if [ ! -z "$REPLAYFILE" ] 
 then
	echo Boredom factor: $SEC-$LAST_EVENT'=' $(($SEC-$LAST_EVENT))
	if [ $(($SEC-$LAST_EVENT)) -gt $BORED_AFTER_SECS ]
	then
		echo
		echo Is is now $SEC seconds
		echo The last time we managed to eliminate a keycode was at $LAST_EVENT
		echo We get bored after $BORED_AFTER_SECS seconds
		echo Giving up now.
		echo
		echo $LAST_CRASH_SEC > $OUTDIR/Finished
		mkdir $OUTDIR/final
		ln $OUTDIR/$SEC* $OUTDIR/final
		CONFIRM_FILE=`calc_confirm_file`
		echo Reproducible > "$CONFIRM_FILE"
		
		
		full_exit
	fi
 fi

  GDB=$OUTDIR/$SEC.GDB
  KEYCODE=$OUTDIR/$SEC.KEYCODE
  KEYCODEpure=$OUTDIR/$SEC.KEYCODEpure
  NEWHOME=~/kt.dir/$SEC.dir
  mkdir -p $NEWHOME
  NEWHOME=`cd $NEWHOME; pwd`
  echo NEWHOME $NEWHOME
  mkdir -p "$NEWHOME"
  cp -rv ~/.lyx "$NEWHOME"/
  killall -9 lyx
  ( sleep 25 &&
     ps a | grep lyx 
	echo -- 1
     LYX_PID=""
     i=0
     while [ -z "$LYX_PID" -a 200 -gt $i ]
     do
	     export LYX_PID=`ps a | grep /src/lyx | grep -v grep | sed 's/^ *//g'|  sed 's/ .*$//'`
	     echo LYXPID "$LYX_PID"
	     sleep 0.1
	     i=$(($i+1))
     done 
     echo `ps a | grep /src/lyx`
	echo -- 2
     echo `ps a | grep /src/lyx | grep -v grep`
	echo -- 3
     echo `ps a | grep /src/lyx | grep -v grep | sed 's/ [a-z].*$//'`
	echo -- 4
     echo LYX_PID=$LYX_PID
     echo XA_PRIMARY | xclip -selection XA_PRIMARY
     echo XA_SECONDARY | xclip -selection XA_SECONDARY
     echo XA_CLIPBOARD | xclip -selection XA_CLIPBOARD

     if [ ! -z "$LYX_PID" ]
     then
	 kill `ps a | grep keytest.py | grep -v grep | cut -c 1-5`
	 sleep 0.2
	 kill -9 `ps a | grep keytest.py | grep -v grep | cut -c 1-5`
         KEYTEST_OUTFILE="$KEYCODEpure" nice -19 python $DIRNAME0/keytest.py | tee $KEYCODE
     fi
     killall lyx) &
  CHILD_PID="$!"
  ls src/lyx ; sleep 1
   pwd
  
  #You may want to use the following to simulate SIGFPE
  #(sleep 90 && killall -8 lyx) &
  echo TTL $TAIL_LINES
  extras_prepare
  ensure_cannot_print
  echo Starting GDB
  (echo "
  shell svn info src/
  run
  bt
  shell kill $CHILD_PID
  shell import -window root '$GDB.png'
  shell wmctrl -l
  shell sleep 1
  shell kill -9 $CHILD_PID
  shell wmctrl -r __renamed__ -b add,shaded
  shell wmctrl -r term -b add,shaded
  shell wmctrl -r term -b add,shaded
  shell wmctrl -R lyx 
  shell import -window root '$GDB..png'
 " ; yes q) | HOME="$NEWHOME" gdb src/lyx 2>&1 | strings|  tee $GDB
  echo END gdb
  kill $CHILD_PID
  sleep 0.3
  kill -9 $CHILD_PID
  # Or use "exited normally":
  if grep " signal SIG[^T]" $GDB 
  then
    extras_save
    LAST_CRASH_SEC=$SEC
    echo $LAST_CRASH_SEC > $OUTDIR/last_crash_sec
    if [ ! -z "$TAIL_LINES" ]
    then
    	LAST_EVENT="$SEC"
	echo Reproducible > $OUTDIR/Reproducible
    fi
    TAIL_LINES="" 
    if [ -z "$REPLAYFILE" ]
    then
	echo ATTEMPTING TO REPLAY
	try_replay
    else
    	export KEYTEST_INFILE=$KEYCODEpure
	NUM_KEYCODES=`wc -l < $KEYCODEpure`
	echo NUM_KEYCODES $NUM_KEYCODES, was $LAST_NUM_KEYCODES
	if [ "$NUM_KEYCODES" != "$LAST_NUM_KEYCODES" ]
	then
		LAST_EVENT="$SEC"
		LAST_NUM_KEYCODES=$NUM_KEYCODES
		echo "Hooray! we have eleminated some keycodes"
	fi
    fi
  else
    rm -r $BAK/* 
    mv $OUTDIR/$SEC.* $BAK/
    if [ ! -z "$TAIL_LINES" ]
     then
        echo TTL3 $TAIL_LINES
	echo MAX_TAIL_LINES "$MAX_TAIL_LINES"
	TAIL_LINES=$(($TAIL_LINES*2))
        echo TTL4 $TAIL_LINES
	if [ "$TAIL_LINES" -ge "0$MAX_TAIL_LINES" -a ! -z "$MAX_TAIL_LINES" ]
	then
		echo Giving up because $TAIL_LINES '>' $MAX_TAIL_LINES
		echo Irreproducible > $OUTDIR/Irreproducible
		full_exit
	fi
    fi
    echo TTL2 $TAIL_LINES
  fi
done
) 2>&1 |tee $OUTDIR/log