#!/bin/bash

# Source local helpers
source ./_common.sh

# Source app helpers
source /usr/share/yunohost/helpers

# Abort script if errors
ynh_abort_if_errors

# Set app specific variables
app="$YNH_APP_INSTANCE_NAME"
dbname=$app
dbuser=$app

# Retrieve old app settings
domain=$(ynh_app_setting_get "$app" domain)
path=$(ynh_app_setting_get "$app" path)
dbpass=$(ynh_app_setting_get "$app" mysqlpwd)

# Check web path availability
ynh_webpath_available "$domain" "$path"

# Install dependencies
ynh_install_app_dependencies "php5-cli"

# Check destination directory
DESTDIR="/var/www/$app"
[[ -d $DESTDIR ]] && ynh_die \
"The destination directory '$DESTDIR' already exists.\
 You should safely delete it before restoring this app."

# Check configuration files
nginx_conf="/etc/nginx/conf.d/${domain}.d/${app}.conf"
[[ -f $nginx_conf ]] && ynh_die \
"The NGINX configuration already exists at '${nginx_conf}'.
 You should safely delete it before restoring this app."
phpfpm_conf="/etc/php5/fpm/pool.d/${app}.conf"
[[ -f $phpfpm_conf ]] && ynh_die \
"The PHP FPM configuration already exists at '${phpfpm_conf}'.
 You should safely delete it before restoring this app."

# Check whether Baïkal or Radicale is installed
if yunohost app list --installed -f baikal | grep -q id ; then
    caldav_app="baikal"
    caldav_baseurl="/cal.php/"
elif yunohost app list --installed -f radicale | grep -q id ; then
    caldav_app="radicale"
    caldav_baseurl="/"
else
    ynh_die "You must install Baïkal or Radicale before"
fi

if ! id -u $app > /dev/null 2>&1 ; then
  useradd -c "$app system account" \
    -d /var/www/$app --system --user-group $app --shell /usr/sbin/nologin \
    || ynh_die "Unable to create $app system account"
fi

# Restore the app files and set permissions
cp -a ./sources "$DESTDIR"

# Protect source code against modifications
chown -hR root: "$DESTDIR"

# Only agendav user should write here
chown -hR $app: "${DESTDIR}/web/var/cache/"{profiler,twig}
chmod -R 750 "${DESTDIR}/web/var/cache/"{profiler,twig}

# The agendav user should read here, but does not need to write
# Other users should not be able to read as it stores passwords.
find "${DESTDIR}/web/config" -type f -exec chown root:$app {} \; -exec chmod 640 {} \;
find "${DESTDIR}/web/config" -type d -exec chown root:$app {} \; -exec chmod 750 {} \;

# Clean caches
rm -rf "${DESTDIR}/web/var/cache/"{profiler,twig}/*

# CalDAV config
caldav_domain=$(ynh_app_setting_get "$caldav_app" domain)
caldav_path=$(ynh_app_setting_get "$caldav_app" path)
caldav_url="https://${caldav_domain}${caldav_path%/}"
conf_path="${DESTDIR}/web/config/settings.php"
sed -i "s@^\(\$app\['caldav.baseurl'\] = \).*\
@\1'${caldav_url}${caldav_baseurl}';@g" "$conf_path"
sed -i "s@^\(\$app\['caldav.baseurl.public'\] = \).*\
@\1'${caldav_domain}';@g" "$conf_path"

# Create log directory
install -m 750 -o www-data -g adm -d "/var/log/${app}"

# Create and restore the database
ynh_mysql_create_db "$dbname" "$dbuser" "$dbpass"
ynh_mysql_connect_as "$dbuser" "$dbpass" "$dbname" < ./dump.sql

# Restore configuration files
cp -a ./nginx.conf   "$nginx_conf"
cp -a ./php-fpm.conf "$phpfpm_conf"

# Reload services
service php5-fpm restart
service nginx reload