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#!/bin/bash
#
# Restore a website from backup
#
# TODO: moin

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

SITE="$2"
SITES="/var/sites"
FOLDER="$SITES/$SITE"
WWW="/var/www/data"

if [ -z "$SITE" ]; then
  hydra_action_usage
  exit 1
fi

hydra_backup_environment $1 restore

# Check if folder exist on the backup
if [ ! -d "$RESTOREDIR/$FOLDER" ]; then
  echo "Folder $FOLDER does not exist at restored backup $RESTOREDIR"
  exit 1
fi

# Check if there's already a site folder and backup it
if [ -e "$FOLDER" ]; then
  echo "Folder $FOLDER already exists, backing it up first..."
  hydractl backup-site $SITE
  if [ "$?" != "0" ]; then
    echo "Error backing up $FOLDER"
    exit 1
  else
    echo "Erasing old site folder"
    rm -rf $FOLDER
  fi
fi

# Copy site folder from backup
echo "Copying site $SITE from backup $RESTOREDIR..."
cp -a $RESTOREDIR/$FOLDER $FOLDER

# Fix permissions
chown -R root.root $FOLDER

# Trac
if [ -e "$FOLDER/trac" ]; then
  ( cd $FOLDER/trac && chown -R $SITE.$SITE attachments conf db auth plugins .egg-cache )
fi

# PmWiki
if [ -e "$FOLDER/wiki" ]; then
  ( cd $FOLDER/wiki && chown -R $SITE.$SITE wiki.d uploads )
  chown $SITE.root $FOLDER/wiki/local/config.php
  chmod 660 $FOLDER/wiki/local/config.php
fi

# Site
if [ -e "$FOLDER/site" ]; then
  chown -R $SITE.$SITE $FOLDER/site
fi

# Drupal
if [ -e "$FOLDER/drupal" ]; then
  SERIES="$3"

  chown -R $SITE.$SITE $FOLDER/drupal/files
  chown root.$SITE $FOLDER/drupal/settings.php
  chmod 640 $FOLDER/drupal/settings.php

  if [ ! -z "$SERIES" ]; then
    if [ -e "$WWW/drupal-$SERIES" ]; then
      echo "Creating basic drupal symlinks..."
      (
      cd $WWW/drupal-$SERIES/sites
      ln -sf $FOLDER/drupal $SITE
      ln -sf $FOLDER/drupal $SITE.`facter domain`
      )
    else
      echo "No drupal $SERIES found in the system, so no symlink handling"
    fi
  else
    echo "No drupal series argument provided, so no symlink handling"
  fi
fi

# Restore database
if [ -f "$RESTOREDIR/var/backups/mysql/sqldump/$SITE.sql.gz" ]; then
  echo "Restoring database $SITE..."
  BASEDIR="$FOLDER"
  hydra_set_tmpfile $SITE -d
  cp $RESTOREDIR/var/backups/mysql/sqldump/$SITE.sql.gz $TMPWORK
  ( cd $TMPWORK && gunzip $SITE.sql.gz )
  hydra_truncate_database $SITE
  mysql $SITE < $TMPWORK/$SITE.sql
  hydra_unset_tmpfile $TMPWORK
else
  echo "Databases should be manually restored"
fi

# Ikiwiki
if [ -e "$FOLDER/ikiwiki" ]; then
  echo "Restoring ikiwiki for $SITE..."
  file="/etc/ikiwiki/$SITE.setup"
  if [ -e "$file" ] && [ -e "/var/git/repositories/$SITE.git" ]; then
    site="`basename $file .setup`"
    git clone file:///var/git/repositories/$SITE /var/sites/$SITE/ikiwiki_src
    ikiwiki --setup $file --rebuild
  else
    echo "Either $file or git repository not found for $SITE ikiwiki instance"
  fi
fi