#!/bin/bash

# Exit on command errors and treat unset variables as an error
set -eu

app=$YNH_APP_INSTANCE_NAME

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

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

# Fix permissions
sudo chmod a+rx ./conf_grafana/_common.sh

# Source local helpers
source ./conf_grafana/_common.sh
SRCPATH=$(pwd)

# Fix path if needed
path=$(fix_path $path)

# Check domain/path availability
sudo yunohost app checkurl "${domain}${path}" -a "$app" \
    || ynh_die "Path not available: ${domain}${path}"

# Install dependencies
install_dependencies

# Create and restore Grafana database
dbname=$app
dbuser=$app
dbpass=$(ynh_app_setting_get "$app" mysqlpwd)
ynh_mysql_create_db "$dbname" "$dbuser" "$dbpass"
ynh_mysql_connect_as "$dbuser" "$dbpass" "$dbname" < ./dump.sql

# Restore InfluxDB data (only if backup not empty)
# That happens when passing automated tests (NetData not present)
if [ "$(ls -A $SRCPATH/influxdb_data)" ] ; then
  sudo influxd restore -metadir /var/lib/influxdb/meta $SRCPATH/influxdb_data
  sudo influxd restore -database opentsdb -datadir /var/lib/influxdb/data $SRCPATH/influxdb_data
fi
# Restore configuration files
sudo cp -a $SRCPATH/conf_influxdb/* /etc/influxdb
sudo cp -a $SRCPATH/conf_grafana/* /etc/grafana
[ "$(sudo ls -A $SRCPATH/conf_grafana_plugins)" ] && sudo cp -a $SRCPATH/conf_grafana_plugins/* /var/lib/grafana/plugins

# Start InfluxDB server
sudo systemctl start influxdb

# Restart grafana server
sudo systemctl restart grafana-server

# Restart NetData if present
sudo systemctl restart netdata || true

# Restore NGINX configuration
sudo cp -a $SRCPATH/nginx.conf "/etc/nginx/conf.d/${domain}.d/${app}.conf"

# Restart webserver
sudo systemctl reload nginx