#! /bin/sh
# postinst script for @PACKAGE@-plugin-mediawiki

set -e

upgrade_mediawikis () {
    # Upgrade Mediawiki database schemas
    /usr/share/gforge/bin/list-projects-using-plugin.php mediawiki | while read i ; do
	/usr/share/gforge/plugins/mediawiki/bin/mw-wrapper.php $i update.php --quick
    done
}

# Accomodate wikidata path change
move_mediawikis() {
	local a b found

	# Determine whether there are any wikis to move
	found=0
	for a in /var/lib/gforge/plugins/mediawiki/wikidata/*; do
		test -d "$a/." || continue
		found=1
		break
	done
	test $found = 1 || {
		rmdir /var/lib/gforge/plugins/mediawiki/wikidata || \
		    echo >&2 "WARNING: Could not delete /var/lib/gforge/plugins/mediawiki/wikidata"
		return 0
	}

	# Move wikis
	(
		cd /var/lib/gforge/plugins/mediawiki/wikidata
		for a in *; do
			test -d "$a/." || {
				echo >&2 "WARNING: Non-directory /var/lib/gforge/plugins/mediawiki/wikidata/$a not migrated!"
				continue
			}
			# Conflict?
			b=../projects/$a
			if test -e "$b"; then
				b=$(mktemp "/var/lib/gforge/plugins/mediawiki/projects/$a-olddata-XXXXXXXXXX") || {
					echo >&2 "Could not create temporary file."
					exit 1
				}
				rm -f "$b"
			fi
			# Move.
			mv "$a" "$b" || \
			    echo >&2 "WARNING: Could not move away /var/lib/gforge/plugins/mediawiki/wikidata/$a, investigate manually!"
		done
	)

	# Look again for remnants
	found=0
	for a in /var/lib/gforge/plugins/mediawiki/wikidata/*; do
		test -e "$a" || continue
		echo >&2 "WARNING: Non-moved files in /var/lib/gforge/plugins/mediawiki/wikidata/ exist. Investigate manually!"
		found=1
		break
	done
	test $found = 1 || \
	    rmdir /var/lib/gforge/plugins/mediawiki/wikidata || \
	    echo >&2 "Could not delete empty /var/lib/gforge/plugins/mediawiki/wikidata"
	return 0
}

case "$1" in
    triggered)
	if [ "$2" = /usr/share/mediawiki/maintenance/postgres ] ; then
	    upgrade_mediawikis
	fi
	;;
    
    configure)
	# Data path changed
	test -d /var/lib/gforge/plugins/mediawiki/wikidata/. && \
	    test -d /var/lib/gforge/plugins/mediawiki/projects/. && \
	    move_mediawikis

	# Run plugin specific db upgrade
	if [ -f /usr/share/@OLDPACKAGE@/plugins/@PLUGSHORTNAME@/bin/db-upgrade.pl ]
	then
		/usr/share/@OLDPACKAGE@/plugins/@PLUGSHORTNAME@/bin/db-upgrade.pl
	fi
	/usr/share/@OLDPACKAGE@/bin/register-plugin $(echo @PLUGSHORTNAME@ | sed 's/-//g') "@PLUGLONGNAME@"
	upgrade_mediawikis
	;;
    
    abort-upgrade|abort-remove|abort-deconfigure)
	;;

    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
	;;
esac

#DEBHELPER#

exit 0