# This file contains common functionality for all postgresql server
# package maintainer scripts.

# arguments: version master package [package]
_link_manpages() {
    MANS=$(unset GREP_OPTIONS; dpkg -L $3 $4 $5 2>/dev/null|egrep '/man/.*\.[1-9](\.gz)?$' | grep -v "$2") || true
    [ -n "$MANS" ] || return 0

    SLAVES=$(for i in $MANS; do TARGET=$(echo $i | sed "s/postgresql\/$1\///"); echo -n " --slave $TARGET $(basename $i) $i"; done)
    update-alternatives --install /usr/share/man/man1/$2 \
	$2 /usr/share/postgresql/$1/man/man1/$2 \
	$(echo "$1" | tr -cd 0-9) $SLAVES
}

# arguments: version master
_unlink_manpages() {
    update-alternatives --remove $2 /usr/share/postgresql/$1/man/man1/$2
}

_remove_tsearch() {
   if [ -e /usr/share/postgresql/$1/tsearch_data ]; then
       find /usr/share/postgresql/$1/tsearch_data -type l \( -name '*.dict' -o -name '*.affix' \) -exec rm '{}' \;
   fi
}

# arguments: <major version> <most recently configured package version>
configure_version() {
    VERSION="$1"

    # Create a main cluster for given version ($1) if no cluster already exists
    # for that version and we are installing from scratch.
    [ "$VERSION" ] || { echo "Error: configure_version: need version parameter" >&2; exit 1; }
    if [ ! -d "/etc/postgresql/$VERSION" ] || [ -z "$(ls /etc/postgresql/$VERSION)" ] || \
       [ -z "$(ls /etc/postgresql/$VERSION/*/postgresql.conf 2>/dev/null)" ]; then
        [ "$2" ] || /usr/bin/pg_createcluster -u postgres $VERSION main --locale=en_US.UTF-8 || {
	echo "Error: could not create default cluster. Please create it manually with

  pg_createcluster -u postgres $VERSION main --locale=en_US.UTF-8

or a similar command (see 'man pg_createcluster')." >&2
	}
    fi

    _link_manpages "$VERSION" postmaster.1.gz "postgresql-$1" "postgresql-contrib-$1"

    if [ -x /etc/init.d/postgresql ] && [ ! -x /etc/init.d/postgresql-$VERSION ]; then
       if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
                invoke-rc.d postgresql start $VERSION || exit $?
        else
                /etc/init.d/postgresql start $VERSION || exit $?
        fi

    fi
}

stop_version() {
    if [ -x /etc/init.d/postgresql ] && [ ! -x /etc/init.d/postgresql-$1 ]; then
       if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
                invoke-rc.d postgresql stop $1 || exit $?
        else
                /etc/init.d/postgresql stop $1 || exit $?
        fi

    fi
}

remove_version() {
    _unlink_manpages "$1" postmaster.1.gz
    _remove_tsearch "$1"
}

configure_client_version() {
    _link_manpages "$1" "postgresql-client-$1" psql.1.gz
}

remove_client_version() {
    _unlink_manpages "$1" psql.1.gz
}

configure_contrib_version() {
    _link_manpages "$1" postmaster.1.gz "postgresql-$1" "postgresql-contrib-$1"
}

remove_contrib_version() {
    # we still want to retain the alternatives for the server packages
    _link_manpages "$1" postmaster.1.gz "postgresql-$1"
}