#!/bin/bash

# Treat unset variables as an error
set -u

# See comments in install script
app=$YNH_APP_INSTANCE_NAME

# Source local helpers
source ./_common.sh

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

# Retrieve app settings
domain=$(ynh_app_setting_get "$app" domain)

# Stop services
sudo systemctl stop grafana-server
sudo systemctl stop influxdb

# Remove app dependencies
ynh_remove_app_dependencies || true
# We keep this second removal for backward compatibility
ynh_package_autoremove "influxdb-grafana-deps" || true

# If packages deinstalled (weren't installed priorly to package installation)
# purge remaining files
if [[ -n "$(dpkg-query --status grafana | grep -E "Status|deinstall")" ]] ; then
  sudo dpkg --purge grafana
  sudo rm /etc/apt/sources.list.d/grafana_stable.list
fi
if [[ -n "$(dpkg-query --status influxdb | grep -E "Status|deinstall")" ]] ; then
  sudo dpkg --purge influxdb
  sudo rm /etc/apt/sources.list.d/influxdb.list
fi

# If NetData is installed, configure it not to feed InfluxDB any more
netdata_conf="/opt/netdata/etc/netdata/netdata.conf"
if [[ -f "$netdata_conf" ]] ; then
  sudo sed -i '/^\[backend\]$/,/^\[/ {
    s/enabled = yes/# enabled = no/
    s/type = opentsdb/# type = graphite/
    s/destination = localhost:4242/# destination = localhost/
    s/update every = 60/# update every = 10/ 
  }' $netdata_conf
fi

# Remove nginx configuration file
sudo rm -f /etc/nginx/conf.d/$domain.d/$app.conf
sudo rm -rf /home/yunohost.app/$app

# Drop MySQL database and user
dbname=$app
dbuser=$app
ynh_mysql_drop_db "$dbname" || true
ynh_mysql_drop_user "$dbuser" || true


# Reload nginx service
sudo systemctl reload nginx