#!/bin/bash
#
# WebHTTrack launcher script
# Initializes the htsserver GUI frontend and launch the default browser
BROWSEREXE=
SRCHBROWSEREXE="x-www-browser www-browser mozilla galeon konqueror opera netscape"
if test -n "${BROWSER}"; then
# sensible-browser will f up if BROWSER is not set
SRCHBROWSEREXE="sensible-browser ${SRCHBROWSEREXE}"
fi
SRCHPATH="/usr/local/bin /usr/share/bin /usr/bin /usr/lib/httrack /usr/local/lib/httrack /usr/local/share/httrack ${HOME}/usr/bin ${HOME}/bin"
SRCHDISTPATH="/usr/share /usr/local /usr /local /usr/local/share ${HOME}/usr ${HOME}/usr/share ${HOME}/usr/local ${HOME}/usr/share"

###
# And now some famous cuisine

function log {
echo "$0($$): $@" >&2
return 0
}

# First ensure that we can launch the server
BINPATH=
for i in ${SRCHPATH}; do
	! test -n "${BINPATH}" && test -x ${i}/htsserver && BINPATH=${i}
done
for i in ${SRCHDISTPATH}; do
	! test -n "${DISTPATH}" && test -f "${i}/httrack/lang.def" && DISTPATH="${i}/httrack"
done
test -n "${BINPATH}" || ! log "could not find htsserver" || exit 1
test -n "${DISTPATH}" || ! log "could not find httrack directory" || exit 1
test -f ${DISTPATH}/lang.def || ! log "could not find ${DISTPATH}/lang.def" || exit 1
test -f ${DISTPATH}/lang.indexes || ! log "could not find ${DISTPATH}/lang.indexes" || exit 1
test -d ${DISTPATH}/lang || ! log "could not find ${DISTPATH}/lang" || exit 1
test -d ${DISTPATH}/html || ! log "could not find ${DISTPATH}/html" || exit 1

# Locale
HTSLANG="${LC_MESSAGES}"
! test -n "${HTSLANG}" && HTSLANG="${LC_ALL}"
! test -n "${HTSLANG}" && HTSLANG="${LANG}"
test -n "${HTSLANG}" && HTSLANG="`echo ${HTSLANG} | cut -c1-2` | tr 'A-Z' 'a-z'"
LANGN=`grep "${HTSLANG}:" ${DISTPATH}/lang.indexes | cut -f2 -d':'`
! test -n "${LANGN}" && LANGN=1

# Find the browser
# note: not all systems have sensible-browser or www-browser alternative
# thefeore, we have to find a bit more if sensible-browser could not be found
for i in ${SRCHBROWSEREXE}; do
for j in ${SRCHPATH}; do
if test -x ${j}/${i}; then
BROWSEREXE=${j}/${i}
fi
test -n "$BROWSEREXE" && break
done
test -n "$BROWSEREXE" && break
done
test -n "$BROWSEREXE" || ! log "cound not find any suitable browser" || exit 1

# "browse" command
if test "$1" = "browse"; then
${BROWSEREXE} "file://${HOME}/websites/index.html"
exit $?
fi

# Create a temporary filename
TMPSRVFILE="/tmp/.webhttrack.$$.`/usr/bin/head -c16 /dev/random | /usr/bin/md5sum | /usr/bin/cut -f1 -d' '`"
>${TMPSRVFILE} || ! log "cound not create the temporary file ${TMPSRVFILE}" || exit 1
# Launch htsserver binary and setup the server
(${BINPATH}/htsserver "${DISTPATH}/" path "${HOME}/websites" lang "${LANGN}" $@; echo SRVURL=error) > ${TMPSRVFILE}&
# Find the generated SRVURL
SRVURL=
MAXCOUNT=60
while ! test -n "$SRVURL"; do
MAXCOUNT=$[$MAXCOUNT - 1]
test $MAXCOUNT -gt 0 || exit 1
test $MAXCOUNT -lt 50 && echo "waiting for server to reply.."
SRVURL=`/bin/grep -E URL= ${TMPSRVFILE} | /usr/bin/cut -f2- -d=`
test ! "$SRVURL" = "error" || ! log "could not spawn htsserver" || exit 1
test -n "$SRVURL" || /bin/sleep 1
done

# Cleanup function
function cleanup {
test -n "$1" && log "nasty signal caught, cleaning up.."
test -f ${TMPSRVFILE} && SRVPID=`/bin/grep -E PID= ${TMPSRVFILE} | /usr/bin/cut -f2- -d=`
test -n "${SRVPID}" && kill -9 ${SRVPID}
test -f ${TMPSRVFILE} && rm ${TMPSRVFILE}
test -n "$1" && log "..done"
return 0
}

# Cleanup in case of emergency
trap "cleanup now; exit" 1 2 3 4 5 6 7 8 9 11 13 14 15 16 19 24 25

# Got SRVURL, launch browser
${BROWSEREXE} "${SRVURL}"

# That's all, folks!
trap "" 1 2 3 4 5 6 7 8 9 11 13 14 15 16 19 24 25
cleanup
exit 0