# $Id:$ vim: fdm=marker

# Licensed under the GPL
# Copyright 2008 Biblibre.com
# Koha library project  www.koha-community.org
#
# this script follow all the installtion procedure described in INSTALL.Debian
# with some additions to use lenny packages.
#
# This file is part of Koha.
#
# Koha 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.
#
# Koha 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.
#
# You should have received a copy of the GNU General Public License along
# with Koha; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# TODO:
# - search and destroy all TODO in this file
# - detect country or locale to choose lang and marc by default for koha install
#   (fr, unimarc) 
# - detect country or locale to choose translator

# abort if anything wrong
set -e

: ${DB_TYPE:=mysql}
: ${DB_HOST:=localhost}
: ${DB_NAME:=koha}    
: ${DB_USER:=kohaadmin}
: ${DB_PASS:=katikoan}

: ${INSTALL_ZEBRA:=yes}
: ${INSTALL_SRU:=yes}
: ${INSTALL_PAZPAR2:=no}
: ${AUTH_INDEX_MODE:=grs1}
: ${BIB_INDEX_MODE:=grs1}

: ${INSTALL_MODE:=standard}

: ${ZEBRA_MARC_FORMAT:=marc21}
: ${ZEBRA_LANGUAGE:=en}
: ${ZEBRA_USER:=kohauser}
: ${ZEBRA_PASS:=zebrastripes}
: ${ZEBRA_SRU_HOST:=localhost}
: ${ZEBRA_SRU_BIBLIOS_PORT:=9998}
: ${ZEBRA_SRU_AUTHORITIES_PORT:=9999}

: ${KOHA_USER:=koha}
: ${KOHA_GROUP:=koha}


: ${MERGE_SERVER_HOST:=localhost}
: ${MERGE_SERVER_PORT:=11001}

: ${PAZPAR2_HOST:=localhost}
: ${PAZPAR2_PORT:=11002}

: ${KOHA_SRC_DIR:=/usr/local/src}
: ${KOHA_SRC_BASE:=koha}
KOHA_SRC_PATH="$KOHA_SRC_DIR/$KOHA_SRC_BASE"
: ${GET_KOHA_SRC_METHOD:=git}

# repo that is used by configure_lenny_sources
# FIXME: comment this before update
LENNY_FLAVORS="testing main non-free contrib" 

GET_KOHA_LOG=/dev/null

# functions declarations {{{

ask_yn () {
	local ans
	echo
	echo
	echo "$*" 
	while echo '(y/n)' && read ans; do
		[ x"$ans" = xn ] && return 1
		[ x"$ans" = xy ] && return 0
	done
}

# perlish warn
warn () { echo "$*" >&2
}

# $1 is errorlevel
# the rest is an error message
die () {
    err=$1
    shift
    warn "$*"
    exit $err
}

add_package () {
# add a list of names of packages to be installed 
# exemple: add_package screen zsh 
# or     : echo screen zsh | add_package 
	local deb 
	if [ "$1" ]; then
	    for deb in $@; do
		    echo $deb >&3
	    done
	else
	    cat >&3
	fi
}

open_package_list () {
    PACKAGELIST=$(mktemp)
    # write in fd3 to add a name of required package
    exec 3>$PACKAGELIST
}

install_package_list () {
    # close the list
    exec 3>&-
    # install it
    xargs -a $PACKAGELIST aptitude install
    # remove it
    rm $PACKAGELIST
}

configure_indexdata_sources () {
    
    # Add indexdata packages to the apt sources
    echo ' # Sources for yaz and idzebra
    deb http://ftp.indexdata.dk/debian etch main
    ' > /etc/apt/sources.list.d/indexdata.sources.list
    
    # install indexdata key (to make indexdata sources usable)
    wget -O- http://ftp.indexdata.dk/debian/indexdata.asc |
	    apt-key add - || die 1 "can't get indexdata sources"

}

configure_lenny_using_apt_spy () {
    dpkg -l apt-spy ||
	aptitude -y install apt-spy
    apt-spy -d lenny
}

# TODO:
# configure_lenny_using_etch_mirror () { 
# sed /etc/apt/sources.list > \
# /etc/apt/sources.list.d/testing.sources.list
# need to handle $@ for this 
# }

add_default_lenny_repro () {
    echo "deb $LENNY_REPO $LENNY_FLAVORS" > \
	/etc/apt/sources.list.d/testing.sources.list
}

ask_for_lenny_repo () {
	echo 'type the url of the repository to use for lenny packages. Be sure that is a valid debian repository.
	for example http://ftp.fr.debian.org/debian/'
	read LENNY_REPO
	add_default_lenny_repro
}

configure_lenny () {
    local howto
    if [ "$LENNY_REPO" ]; then
	add_default_lenny_repro
    else
	echo '$LENNY_REPO not set, what do you want to do now'
	select howto in \
		'manually set LENNY_REPO
		' \
		'get and use apt-spy to automatically find a repository
		(it can take some times)
		' \
		'let sources.list as it (still configured)' \
		'leave the installation' 
	do
		case "$howto" in

			*manually*)
				ask_for_lenny_repo
				break
			;;

			*automatically*)
				configure_lenny_using_apt_spy
				break
			;;

			*configured*)
				break
			;;

			*leave*)
				exit
			;;
		esac
	done
    fi
}

configure_aptitude_correctly () {
# configure aptitude to behave as old apt tools and
# use etch packages by default
cat << CONFAPT >  /etc/apt/apt.conf.d/Apt
APT {
    Default-Release "stable";
    Cache-Limit 20000000;
}

Aptitude {
    Recommends-Important false;
    Keep-Recommends false;
}
CONFAPT
}


set_libxml_parser () {
    # TODO: update-perl-sax-parsers --priority since lib-xml-sax-perl 0.16
	sed -i '
		# when XML::LibXML::SAX::Parser header detected
		# move the 2 lines in the hold space
		/[[]XML::LibXML::SAX::Parser[]]/ {
			N;H;d
		}

		# replace end of file by hold space
		$ { p;x }
	' /etc/perl/XML/SAX/ParserDetails.ini
}

verify_sax_parser () {
    local r
    r=`perl -MXML::SAX::ParserFactory -e 'print ref XML::SAX::ParserFactory->parser'`
    test "$r" = XML::LibXML::SAX::Parser || set_libxml_parser
}

create_debian_koha_user() {
# TODO: use $KOHA_GROUP
echo ----------------------
echo add the system user and group for koha.
echo your choice: $1
echo ----------------------
adduser $1
}

apache_add_ports () {
	local ports ports_conf needed
	ports_conf="${1:-/etc/apache2/ports.conf}"
	ports=`sed -n 's/Listen[\t ]\([0-9]\+\)/\1/p' "$ports_conf"` 
	{ for needed in 80 8080; do
		expr "$ports" : '.*\<\('$needed'\)\>.*' > /dev/null ||
			echo "# Added by koha installer
Listen $needed
"
	done } >> "$ports_conf" 
}

get_koha_git_clone () {
    # /!\ be carrefull to be in the good directory
    # /usr/local/src/ recommended
    local base="${1:-koha}"

    dpkg -l git-core ||
	aptitude -y  install git-core git-email
    git clone git://git.koha-community.org/koha.git "$base"
}

get_koha_release () {
    wget -O- http://download.koha-community.org/koha-3.00.00.tar.gz |
	tar xzf - 
}

get_koha_beta () {
    # /!\ be carrefull to be in the good directory
    # /usr/local/src/ recommended

    local method base
    base="$1"
    method="${2:-beta}"

    get_koha_release "$base" && return 0
    [ $method = tar ] && return 1 

    local i basename; i=2
    while [ $i != 11 ]; do
	basename=koha-3.00.00-beta$i
	wget -O- http://download.koha-community.org/$basename.tar.gz |
	    tar xzf - &&
		mv $basename "$base" &&
		return 0
	let i+=1
    done

    return 1 
}

get_koha_sources () {
    # /!\ be carrefull to be in the good directory
    # /usr/local/src/ recommended
    local method base
    method="${2:-git}"
    base="$1"

    case "$method" in
	git) get_koha_git_clone $base
	;;
	tar)
		get_koha_release "$base" ||
			die 1 koha not found
	;;
	beta) get_koha_beta "$base" "$method" ||
			die 1 koha not found
	;;
	*) : # TODO: error message and exit 
	;;
    esac
}

# end of function declarations }}}

if [ -e "$KOHA_SRC_PATH" ];then
    if ask_yn "$KOHA_SRC_PATH still exists. use it ?"; then
	    ask_yn "download the sources again ?" ||
		PLEASE_DONT_GET=1
    else 
	    exit
    fi
else 
	[ -d "$KOHA_SRC_DIR" ] ||
		die 1 "$KOHA_SRC_DIR is not a directory"
fi

# parsing arguments {{{
# TODO: document it
# TODO: this won't work with real bourne shell (use expr instead)
if [ "$1" ]; then
    [ "$1" = *b* ] && GET_KOHA_SRC_METHOD=beta
    [ "$1" = *t* ] && GET_KOHA_SRC_METHOD=tar
    [ "$1" = *c* ] && DEBIAN_STILL_CONFIGURED=yes
fi

# TODO: remove it ? 
goto_koha_path () {
    cd $KOHA_SRC_PATH && return 0
    cd $KOHA_SRC_DIR
    local candidate
    local done
    done=no
    for candidate in koha?*; do
	if [ $done = no ]; then
	    mv $candidate $KOHA_SRC_BASE
	else
	    die 1 "more than one koha candidate into $KOHA_SRC_DIR, please clean up" 
	fi
    done 
    cd $KOHA_SRC_PATH && die 1 "can't cd to $KOHA_SRC_PATH"
}

mysql_create_base () {
	# TODO: what if non mysql backend ? so code ! 
	# try to create or try to find the base
	mysqladmin -uroot create "$1" || 
		echo show databases   |
			mysql         |
			grep -q "^$1$"
}

mysql_grant_access () { 
	local base login password
	base="$1" login="$2" password="$3"
cat << GRANTACCESS | mysql 
grant all on $base.* to '$login'@'localhost' identified by '$password';
flush privileges;
GRANTACCESS
}

verify_etch_sources () {
	local current backup
	current=/etc/apt/sources.list 
	backup=/etc/apt/sources.list.bak 
	if [ ! -e $current ] || [ ! -s $current ]; then
		[ -e $backup ] && mv $backup $current || die 1 "can't find etch"
	fi
}

# }}}

cd "$KOHA_SRC_DIR"
[ "$PLEASE_DONT_GET" ] ||
	get_koha_sources "$KOHA_SRC_BASE" "$GET_KOHA_SRC_METHOD" > $GET_KOHA_LOG 2>&1  & 

[ $DEBIAN_STILL_CONFIGURED ] || {
    configure_indexdata_sources  # to install yaz and iezebra
    configure_lenny              # because etch lacks some packages
    configure_aptitude_correctly # to solve dependancies and conflicts
    verify_etch_sources
}

# update the system
aptitude update
aptitude upgrade

open_package_list           # now we can add packages with add_package command
# this would be installed by dependances but it needs to be
# installed first to autoconfigure perl sax parser
add_package libxml-libxml-perl
# libyaz-dev required to build Net::Z3950::ZOOM from cpan
# can be removed when debian package will be usefull
add_package libyaz-dev
# lot of koha dependancies
cat << PACKAGES | add_package
idzebra-2.0
yaz
libmail-sendmail-perl
libhtml-scrubber-perl
libmarc-record-perl/testing
libmarc-charset-perl/testing
libmarc-crosswalk-dublincore-perl
libpdf-reuse-perl
libpdf-reuse-barcode-perl
libdata-ical-perl
libxml-rss-perl/testing
libpoe-perl/testing
libschedule-at-perl
apache2
daemon
libgcrypt11
libgcrypt11-dev
gcc
make
mysql-server
libcgi-session-perl
libdate-calc-perl
libdate-manip-perl
libdatetime-format-mail-perl
libdatetime-format-ical-perl
liblingua-stem-perl
libdatetime-format-strptime-perl
libdatetime-format-w3cdtf-perl
libdbi-perl
libmysqlclient15-dev
libnet-ldap-perl
liblocale-po-perl
libpdf-api2-perl
libpoe-perl/testing
libtext-csv-perl/testing
libtext-charwidth-perl
libtime-duration-perl
libtime-format-perl
libunix-syslog-perl
libxml-dom-perl
libxml-dumper-perl
libxml-simple-perl
libxml-regexp-perl
libxml-xslt-perl/testing
libxml-libxslt-perl
libxml2-utils
libxslt1-dev
libyaml-syck-perl
libhtml-template-pro-perl
libdbd-mysql-perl/testing
libgraphics-magick-perl
liblist-moreutils-perl
libtext-iconv-perl/testing
libalgorithm-checkdigits-perl
libmarc-xml-perl
PACKAGES

# no more "path not found" message during cpan configuration
add_package unzip lynx ncftp ftp

# just because it ease the life of the sysop
add_package screen zsh less lsof strace

# every selected packages will now be installed
install_package_list
# something wrong with libyaz-dev... KISS workaround is reinstall
aptitude install libyaz-dev

# those perl libs have no statisfying debian packages
# so they are installed via cpan.
cpan Net::Z3950::ZOOM Biblio::EndnoteStyle

getent passwd $KOHA_USER ||
    create_debian_koha_user $KOHA_USER ||
    die 1 "can't create $KOHA_USER"

mysql_create_base "$DB_NAME" ||
	die 1 "can't create or find $DB_NAME"
mysql_grant_access "$DB_NAME" "$DB_USER" "$DB_PASS" ||
	die 1 "can't grant access to $DB_USER"

echo "please wait while i'm downloading koha sources"
wait
cd "$KOHA_SRC_PATH"

verify_sax_parser 

perl Makefile.PL
make
make test
make install
apache_add_ports

makefile_value () {
    sed -n ' s/^'"$1"' = //T;p;q'  Makefile
}

koha_conf=`makefile_value KOHA_DEST_KOHA_CONF_DIR`
ln -s "$koha_conf"/koha-httpd.conf /etc/apache2/sites-available/koha

a2enmod rewrite
a2ensite koha
invoke-rc.d apache2 reload

koha_script=`makefile_value KOHA_DEST_SCRIPT_DIR`
ln -s "$koha_script"/koha-index-daemon-ctl.sh  /etc/init.d/koha-index-daemon
update-rc.d koha-index-daemon defaults

# TODO:
# - add translator
# if cd misc/translator; then
#     ./tmpl_process3 install -s po/fr-FR... -i ../../koha-tmpl/opac-tmpl/prog/en -o ../../koha-tmpl/opac-tmpl/prog/fr-FR
#     cd -
# fi