#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# LOAD SETTINGS
#=================================================
ynh_print_info "Loading installation settings..."

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get $app domain)
path_url=$(ynh_app_setting_get $app path)
is_public=$(ynh_app_setting_get $app is_public)
final_path=$(ynh_app_setting_get $app final_path)
server_name=$(ynh_app_setting_get $app server_name)
service_name=$(ynh_app_setting_get $app service_name)
service_checker_name=$service_name"-checker"


#=================================================
# SPECIAL UPGRADE FOR VERSIONS < 1.2.0
#=================================================

# Apply renaming that occured in v1.2.0 ("vpnadmin" -> "${app}")
if [ -f /etc/nginx/conf.d/${domain}.d/vpnadmin.conf ]; then
  ynh_replace_string "/var/www/vpnadmin/" "/var/www/${app}/" "/etc/nginx/conf.d/${domain}.d/vpnadmin.conf"
  ynh_replace_string "vpnadmin.sock" "${app}.sock" "/etc/nginx/conf.d/${domain}.d/vpnadmin.conf"
  mv /etc/nginx/conf.d/${domain}.d/vpnadmin.conf /etc/nginx/conf.d/${domain}.d/${app}.conf
fi
if [ -f /etc/php5/fpm/pool.d/vpnadmin.conf ]; then
  ynh_replace_string "/var/www/vpnadmin/" "/var/www/${app}/" /etc/php/7.0/fpm/pool.d/vpnadmin.conf
  ynh_replace_string "vpnadmin.sock" "${app}.sock"  /etc/php/7.0/fpm/pool.d/vpnadmin.conf
  mv /etc/php5/fpm/pool.d/vpnadmin.conf /etc/php/7.0/fpm/pool.d/${app}.conf
fi
test -d /var/www/vpnadmin && mv /var/www/vpnadmin /var/www/${app}

if [ -z $service_name ]; then
  service_name="ynh-vpnclient"
  service_checker_name=$service_name"-checker"
  ynh_app_setting_set "$app" service_name "$service_name"
fi

## Versions known to have a buggy backup script
#buggy_versions="1.0.0 1.0.1 1.1.0"
#curr_version=$(read_manifest version)
#if echo $buggy_versions | grep -w $curr_version > /dev/null; then
#  echo "Your current version of ${app} is very old: ${curr_version}. Please ignore the next warning." >&2
#fi
#
##=================================================
## BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
##=================================================
#
#ynh_backup_before_upgrade
#ynh_clean_setup () {
#    ynh_restore_upgradebackup
#}
## Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# DO UPGRADE
#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_print_info "Installing dependencies..."

ynh_install_app_dependencies "$pkg_dependencies"

#=================================================
# DEPLOY FILES FROM PACKAGE
#=================================================

# Keep a copy of existing config files before overwriting them
tmpdir=$(mktemp -d /tmp/vpnclient-upgrade-XXX)
cp -r /etc/openvpn/client* ${tmpdir}

# Deploy files from package
vpnclient_deploy_files_and_services "${domain}" "${app}" "${service_name}"

# Restore previously existing config files
cp -r ${tmpdir}/client* /etc/openvpn/
ynh_secure_remove ${tmpdir}

#=================================================
# RELOAD RELEVANT SERVICES
#=================================================
ynh_print_info "Reload services..."

systemctl reload php7.0-fpm
systemctl reload nginx

### Make sure that the yunohost services have a description and need-lock enabled

# main service

if service_is_managed_by_yunohost $service_name
then
  yunohost service remove $service_name
fi
yunohost service add $service_name --description "Tunnels the internet traffic through a VPN" --need_lock

# checker service

if service_is_managed_by_yunohost $service_checker_name
then
  yunohost service remove $service_checker_name
fi
yunohost service add $service_checker_name --description "Makes sure that the VPN service is running" --need_lock

# Reload systemd configuration

systemctl daemon-reload

### Restart services

# restart main service if needed

if systemctl is-active $service_name >/dev/null;
then
    yunohost service restart $service_name
fi

# restart checker service if needed

if systemctl is-active $service_checker_name >/dev/null;
then
    yunohost service restart $service_checker_name
fi

# restart checker service timer

if systemctl is-active $service_name.timer >/dev/null;
then
    yunohost service restart $service_checker_name.timer
fi

#=================================================
# END OF SCRIPT
#=================================================

ynh_print_info "Upgrade of $app completed"