#!/bin/bash

setVariables() {
#Where to put the SVN source files (~80-90 MB)
	SRCDIR="/root/hula"
#Where are your distfiles?
#	DISTDIR=`portageq distdir`
	DISTDIR="/opt/distfiles"
#Where to put the /net-mail/hula/* ebuild files
#	OVERLAY=`portageq portdir_overlay|cut -d " " -f1`
	OVERLAY="/usr/local/portage/overlay"
}

setColors() {
	C_NOCOLOR="\033[0m"
	C_TITLE="\033[1;37m"
	C_ACTION="\033[1;32m"
	C_ERROR="\033[1;31m"
}

checkVariables() {
#check if the above files/directories exist...
	ERROR=0
	if [ ! -d ${DISTDIR} ]; then
		echo -e "${C_ERROR}! \"${DISTDIR}\" does not exist!${C_NOCOLOR}"
		let ERROR++
	fi
	if [ ! -d ${OVERLAY} ]; then
		echo -e "${C_ERROR}! \"${OVERLAY}\" does not exist!${C_NOCOLOR}"
		let ERROR++
	fi
	exitOnError ${ERROR}
}

getRevision() {
	if [ -f "${SRCDIR}/trunk/.svn/entries" ]; then
		REVISION=`cat "${SRCDIR}/trunk/.svn/entries" | grep revision= | cut -d "\"" -f 2`
		echo -e "${C_ACTION}*${C_NOCOLOR} Detected rev: ${REVISION}"
	else
		echo "! Hula source files not found in \"${SRCDIR}\"..."
		echo "! Please run this script with the -u (update) or -a (all) parameter..."
		exitOnError 1
	fi
}

createSymlink() {
	getRevision
	if [ -d "${SRCDIR}/trunk/hula-r${REVISION}" ]; then
		echo -e "${C_ACTION}*${C_NOCOLOR} Found a perfect symlink..."
	else
		echo -e "${C_ACTION}*${C_NOCOLOR} Removing old symlinks"
		rm -f ${SRCDIR}/trunk/hula-r*
		echo -e "${C_ACTION}*${C_NOCOLOR} Creating new symlink (hula-r${REVISION})"
		cd ${SRCDIR}/trunk
		ln -s hula hula-r${REVISION}
	fi
}

svnCheckout() {
	echo -e "${C_TITLE}Updating from SVN${C_NOCOLOR}"
	mkdir -p "${SRCDIR}"
	cd "${SRCDIR}"
	#echo -e "${C_ACTION}*${C_NOCOLOR} To check out without passwords, follow instructions on \"http://www.hula-project.org/Setting_Up_Public_Keys_for_forge.novell.com\""
	echo -e "${C_ACTION}*${C_NOCOLOR} Logging into SVN. If prompted for a password, enter \"anonymous\" (without quotes, twice)"
	svn checkout svn+ssh://anonymous@forgesvn1.novell.com/svn/hula/trunk
	exitOnError ${?}
}

exitOnError() {
	errorCode=${1}
	if [ ${errorCode} -gt 0 ]; then
		echo
		echo -e "${C_ERROR}!!! Something went wrong! Errorcode: ${errorCode} !!!${C_NOCOLOR}"
		echo
		exit ${errorCode}
	fi
}

createTarball() {
	echo -e "${C_TITLE}Creating tarball${C_NOCOLOR}"
	createSymlink
	echo -e "${C_ACTION}*${C_NOCOLOR} Creating \"${DISTDIR}/hula-r${REVISION}.tgz\" (~80-90 MB of source code)"
	cd "${SRCDIR}/trunk"
	tar zchf "${DISTDIR}/hula-r${REVISION}.tgz" hula-r${REVISION}/
	exitOnError ${?}
	echo -e "${C_ACTION}*${C_NOCOLOR} Done..."
}

updateEbuild() {
	echo -e "${C_TITLE}Updating Ebuild${C_NOCOLOR}"
	getRevision
	cd ${SRCDIR}
	echo -e "${C_ACTION}*${C_NOCOLOR} Creating \"${OVERLAY}/net-mail/hula\""
	mkdir -p "${OVERLAY}/net-mail/hula"
	exitOnError ${?}
	echo -e "${C_ACTION}*${C_NOCOLOR} Creating \"${OVERLAY}/net-mail/hula/hula-${REVISION}.ebuild\""
	createNewEbuild "${OVERLAY}/net-mail/hula/hula-${REVISION}.ebuild"
	exitOnError ${?}
	if [ ! -f "${OVERLAY}/net-mail/hula/files/hula" ]; then
		echo -e "${C_ACTION}*${C_NOCOLOR} Creating \"${OVERLAY}/net-mail/hula/files/hula\""
		createNewInitscript "${OVERLAY}/net-mail/hula/files/hula"
		exitOnError ${?}
	fi
	if [ ! -f "${OVERLAY}/net-mail/hula/files/define_spamassassin.patch" ]; then
		echo -e "${C_ACTION}*${C_NOCOLOR} Creating \"${OVERLAY}/net-mail/hula/files/define_spamassassin.patch\""
		createNewSpamassassinPatch "${OVERLAY}/net-mail/hula/files/define_spamassassin.patch"
		exitOnError ${?}
	fi
	echo -e "${C_ACTION}*${C_NOCOLOR} Creating digest for new ebuild (hula-${REVISION}.ebuild)"
	cd "${OVERLAY}/net-mail/hula"
	ebuild hula-${REVISION}.ebuild digest > /dev/null
	exitOnError ${?}
	echo -e "${C_ACTION}*${C_NOCOLOR} Done..."
}

displayOptions() {
	echo "Create \"hula\" tarball and ebuild from SubVersioN script..."
	echo
	echo "Usage: ${1} <option> [-nc]"
	echo "  -u: <u>pdate from SVN repository in \"${SRCDIR}\""
	echo "  -t: Create <t>arball in \"${DISTDIR}\""
	echo "  -e: Create <e>build in \"${OVERLAY}\""
	echo
	echo "  -nc: <n>o <c>olors. Disables the colored output"
	echo
	echo "  -a: <a>ll: Update, build tarball and update ebuild"
	echo
}

createNewEbuild() {
	cat << 'EOF' > ${1}
# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit eutils

IUSE="spamassassin"
SLOT="0"
LICENSE="LGPL-2"
KEYWORDS="~x86"
DESCRIPTION="A calendar and webmail application, which includes its own MTA"
SRC_URI="http://kelley.ca/hulaTar/tars/hula-r${PV}.tgz"
HOMEPAGE="http://hula-project.org/"
DEPEND="dev-libs/openssl
	>=sys-devel/automake-1.7
	dev-util/pkgconfig
	spamassassin? ( mail-filter/spamassassin )"
MY_S=${WORKDIR}/${PN}-r${PV} 

src_compile() {
	cd ${MY_S}
	if use spamassassin; then
		epatch ${FILESDIR}/define_spamassassin.patch || die
	fi
	./autogen.sh \
		--prefix=/usr \
		--mandir=/usr/share/man \
		--localstatedir=/var || die
	emake || die "emake failed"
}

src_install() {
	cd ${MY_S}
	make DESTDIR=${D} install || die "make failed"
	exeinto ${D}/etc/init.d
	doexe ${FILESDIR}/hula
}

pkg_postinst() {
	echo
	einfo "Before using Hula, you must run hulasetup."
	einfo "For more information on hulasetup run 'hulasetup --help'."
	echo
	einfo "Run '/etc/init.d/hula start' to start Hula."
	echo
	einfo "The administration interface is located at 'http://your.domain:89/'"
	echo
	einfo "The default login credentials are:"
	einfo "   Username: admin"
	einfo "   Password: hula"
	echo
	einfo "Initial configuration howto:"
	einfo "   http://www.hula-project.org/Installation_tutorial#Initial_Configuration"
	if use spamassassin; then
		einfo "Spamassassin howto:"
		einfo "   http://www.hula-project.org/Setting_Up_SpamAssassin"
	fi
	echo
}
EOF
}

createNewInitscript() {
	cat << 'EOF' > ${1}
#!/sbin/runscript

depend() {
		need net
		use logger dns
}

start() {
		ebegin "Starting hula"
		start-stop-daemon --start --quiet --exec /usr/sbin/hulamanager -- -d
		eend $?
}

stop() {
		ebegin "Stopping hula"
		start-stop-daemon --stop --quiet --name hulamanager
		eend $?
}
}
EOF
}

createNewSpamassassinPatch() {
	cat << 'EOF' > ${1}
--- src/agents/antispam/antispam.h.old  2005-07-05 14:52:30.000000000 +0200
+++ src/agents/antispam/antispam.h      2005-07-05 14:52:50.000000000 +0200
@@ -30,6 +30,8 @@
 #include <nmap.h>
 #include <nmlib.h>

+#define VERBOSE_SPAMASSASSIN
+
 #define PRODUCT_SHORT_NAME "hulaantispam.nlm"

 #define CONNECTION_TIMEOUT (15 * 60)
EOF
}

if [ "${2}" != "-nc" ]; then setColors; fi

setVariables
checkVariables

case ${1} in
	"-u" )   svnCheckout;;
	"-t" )   createTarball;;
	"-e" )   updateEbuild;;
	"-a" )   svnCheckout && echo && createTarball && echo && updateEbuild;;
	* )	displayOptions ${0};;
esac