#!/bin/bash
#
# Lists backup restoration.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with this program.  If not, see
# <http://www.gnu.org/licenses/>.

# Load.
source $APP_BASE/lib/hydra/functions || exit 1
hydra_config_load

# Parameters.
DATE="`date +%Y%m%d`"
LISTS_DIR="/var/mail/virtual"
SITE="sympa"

# Check restore strategy.
if [ "$1" == "localhost" ] || [ "$1" == "`facter hostname`" ]; then
  hydra_backup_environment_local
else
  hydra_backup_environment_remote $1 restore
fi

# Check if folder exist on the backup.
if [ ! -d "$RESTOREDIR/$LISTS_DIR" ]; then
  echo "Lists folder does not exist: $RESTOREDIR/$LISTS_DIR"
  exit 1
fi

# Set git user.
if hydra_check_user sympa; then
  LISTS_USER="sympa"
else
  LISTS_USER="root"
fi

# Set git group.
if hydra_check_group sympa; then
  LISTS_GROUP="sympa"
else
  LISTS_GROUP="root"
fi

# TODO: Backup it?
#hydractl backup-sympa

# Restore lists folders from backup.
#rsync -av $RESTOREDIR/$LISTS_DIR/wwsarchive/ $LISTS_DIR/wwsarchive/
#rsync -av $RESTOREDIR/$LISTS_DIR/expl/ $LISTS_DIR/expl/
#rsync -av $RESTOREDIR/$LISTS_DIR/bounce/ $LISTS_DIR/bounce/
rsync -av --delete $RESTOREDIR/$LISTS_DIR/ $LISTS_DIR/

DB_DUMP_BASE="$RESTOREDIR/var/backups/mysql/sqldump"

# Check if there are database dumps
if [ -f "$DB_DUMP_BASE/$SITE.sql.gz" ]; then
  DB_DUMP_EXT=".gz"
  DB_DUMP_EXTRACT="gunzip"
elif [ -f "$DB_DUMP_BASE/$SITE.sql.bz2" ]; then
  DB_DUMP_EXT=".bz2"
  DB_DUMP_EXTRACT="bunzip2"
elif [ -f "$DB_DUMP_BASE/$SITE.sql" ]; then
  DB_DUMP_EXT=""
  DB_DUMP_EXTRACT="true"
fi

# Restore database
if [ ! -z "$DB_DUMP_EXT" ]; then
  echo "Restoring database $SITE..."
  hydra_set_tmpfile $SITE -d
  cp $DB_DUMP_BASE/$SITE.sql$DB_DUMP_EXT $TMPWORK
  ( cd $TMPWORK && $DB_DUMP_EXTRACT $SITE.sql$DB_DUMP_EXT )
  hydra_truncate_database $SITE
  mysql $SITE < $TMPWORK/$SITE.sql
  hydra_unset_tmpfile $TMPWORK
else
  echo "Database should be manually restored"
fi

# Fix permissions.
chown -R $LISTS_USER.$LISTS_GROUP $LISTS_DIR