#!/bin/bash

# Synfig Crash Monitor script

# Copyright (c) 2009-2010 Konstantin Dmitriev

#

#	This package is free software; you can redistribute it and/or

#	modify it under the terms of the GNU General Public License as

#	published by the Free Software Foundation; either version 2 of

#	the License, or (at your option) any later version.

#

#	This package is distributed in the hope that it will be useful,

#	but WITHOUT ANY WARRANTY; without even the implied warranty of

#	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

#	General Public License for more details.

set -e

trap writelog INT

init()

{

echo "SynfigStudio Crash Monitor is a tool to collect statistics about synfig crashes."

echo "All information is collected locally in ~/.synfig/cph directory."

echo

STARTED=0

RUNTIME=0

VERSION=''

RELEASE=''

BRANCH=''

REVISION_ID=''

CRASH=0

[ ! -d ~/.synfig/cph ] && mkdir -p ~/.synfig/cph || true

# Detect if crash monitor is already started

PDIR=${0%`basename $0`}

LCK_FILE=~/.synfig/cph/`basename $0`.lck

if [ -f "${LCK_FILE}" ]; then

	MYPID=`head -n 1 "${LCK_FILE}"`

	if ! ( ps -p ${MYPID} | grep ${MYPID} >/dev/null ); then

		# The process is not running

		# Echo current PID into lock file

		echo $$ > "${LCK_FILE}"

	else

		echo "`basename $0` is already running [${MYPID}]. Aborting."

		sleep 5

		exit 0

	fi

else

	# The process is not running

	# Echo current PID into lock file

	echo $$ > "${LCK_FILE}"

fi

echo `date +%H:%M` "Synfig Crash Monitor started."

}

writelog()

{

	if [[ $STARTED != 0 ]]; then

		if [[ $CRASH == 0 ]]; then

			echo `date +%H:%M` "Synfig exited normally. Session time: $RUNTIME."

		else

			echo `date +%H:%M` "Crash detected. Version $VERSION.$RELEASE.$BRANCH, session time: $RUNTIME."

		fi

		if [ -e ~/.synfig/cph/log ]; then

			#check if dump needed

			CURRENTDATE=`date +%Y-%m-%d`

			LOGMODDATE=`stat -c %y ~/.synfig/cph/log`

			LOGMODDATE=${LOGMODDATE%% *}

			if [[ $LOGMODDATE != $CURRENTDATE ]]; then

				dumpstats

			fi

		fi

		#write log

		echo $VERSION/$BRANCH/$RELEASE/$REVISION_ID $RUNTIME $CRASH >> ~/.synfig/cph/log

		CRASH=0

		RUNTIME=0

	else

		echo

	fi

}

dumpstats()

{

	echo `date +%H:%M` 'Dumping stats for previous session...'

	LOGMODDATE=`stat -c %y ~/.synfig/cph/log`

	LOGMODDATE=${LOGMODDATE%% *}

	#get versions

	VERSIONS=''

	while read LINE; do

		FOUND=0

		for VER in $VERSIONS; do

			if [[ $VER == ${LINE%% *} ]]; then

				FOUND=1

				break

			fi

		done

		[[ $FOUND == 0 ]] && VERSIONS="$VERSIONS ${LINE%% *}"

	done < ~/.synfig/cph/log

	echo "   Logged versions: ${VERSIONS}"

	for VER in $VERSIONS; do

		#generating random record ID

		ID=$( echo `date` `ps` | md5sum | md5sum )

		ID="${ID:2:16}"

		#summarizing time and counting crashes

		CRASHCOUNT=0

		TIMECOUNT=0

		while read LINE; do

			if [[ ${LINE%% *} == $VER ]]; then

				TIMECOUNT=`expr $TIMECOUNT + $(echo $LINE| cut -f 2 -d ' ')` || true

				CRASHCOUNT=`expr $CRASHCOUNT + $(echo $LINE| cut -f 3 -d ' ')` || true

			fi

		done < ~/.synfig/cph/log

		echo "   $LOGMODDATE $ID $VER $TIMECOUNT $CRASHCOUNT"

		echo "$LOGMODDATE $ID $VER $TIMECOUNT $CRASHCOUNT" >> ~/.synfig/cph/stats

	done

	rm -f ~/.synfig/cph/log

	echo '   Done.'

}

mainloop()

{

	while true; do

		if ( ps --no-headers -f -Csynfigstudio |egrep "^`whoami`" > /dev/null ) ; then

			#synfigstudio process exist

			if [[ $STARTED == 0 ]]; then

				STARTED=1

				RUNTIME=0

				#get version

 				P=$(ps --no-headers -Csynfigstudio -o uid,cmd |egrep "^ *`id -u`" | egrep -v "<defunct>" | tr -s ' ' | sed "s|^ *`id -u` *||" | sed "s|/bin/sh *||" | head -n 1)</defunct>

				echo 

				if [ ! -e $P ]; then

					P=`which $P`

				fi

				P=`dirname $P`

				VERSION=`$P/synfig --info|head -n 1|cut -d '-' -f 2`

				RELEASE=`$P/synfig --info|egrep "Revision:"|cut -d ' ' -f 2`

				BRANCH=`$P/synfig --info|egrep "Branch:"|cut -d ' ' -f 2-3`

				REVISION_ID=`$P/synfig --info|egrep "Revision ID:"|cut -d ' ' -f 3`

				if [[ $BRANCH == '(no branch)' ]]; then

					BRANCH=$REVISION_ID

				fi

				echo `date +%H:%M` "Synfig $VERSION.$RELEASE.$BRANCH.$REVISION_ID started."

				echo `date +%H:%M` "Assuming Synfig installed in $P."

			else

				let RUNTIME=$RUNTIME+1

			fi

		else

			#no synfigstudio process exist

			if [[ $STARTED == 1 ]]; then

				#detect crash

				if [ -e ~/.synfig/fifo ]; then

					CRASH=1

				fi

				writelog

				CRASH=0

				STARTED=0

			fi

		fi

		sleep 1

	done

}

init

mainloop