#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..."

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
port=$(ynh_app_setting_get --app=$app --key=port)
nginx_status_port=$(ynh_app_setting_get --app=$app --key=nginx_status_port)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_user=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)

#=================================================
# CHECK VERSION
#=================================================
ynh_script_progression --message="Checking version..."

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..."

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	ynh_clean_check_starting
	# Restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..."

ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app/$app.log"

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..."

# If db_name doesn't exist, create it
if [ -z "$db_name" ]; then
	db_name=$(ynh_sanitize_dbid --db_name=$app)
	dbuser=$db_name
	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
fi

# If port doesn't exist, create it
if [ -z "$port" ]; then
	port=$(ynh_app_setting_get --app=$app --key=http_port)
	ynh_app_setting_set --app=$app --key=port --value=$port
	ynh_app_setting_delete --app=$app --key=http_port
fi

# Remove old hook if exist
ynh_secure_remove --file=/usr/share/yunohost/hooks/post_iptable_rules/50-$app

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --weight=6

ynh_install_app_dependencies $pkg_dependencies
tempdir="$(mktemp -d)"
ynh_setup_source --dest_dir="$tempdir"
ynh_package_update
dpkg --force-confdef --force-confold -i /$tempdir/app.deb
ynh_package_install -f
ynh_secure_remove --file="$tempdir"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..."

# Create a dedicated NGINX config
ynh_add_nginx_config
ynh_add_config --template="../conf/nginx_status.conf" --destination="/etc/nginx/conf.d/monitorix_status.conf"

#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a configuration file..."

jail_list=$(fail2ban-client status | grep 'Jail list:' | sed 's/.*Jail list://' | sed 's/,//g')
additional_jail=""
for jail in $jail_list; do
	if ! [[ "$jail" =~ (recidive|pam-generic|yunohost|postfix|postfix-sasl|dovecot|nginx-http-auth|sshd|sshd-ddos) ]]; then
		if [ -z "$additional_jail" ]; then
			additional_jail="[$jail]"
		else
			additional_jail+=", [$jail]"
		fi
	fi
done

path_url_slash_less=${path_url%/}
ynh_add_config --template="../conf/monitorix.conf" --destination="/etc/monitorix/monitorix.conf"

chown www-data:root -R /etc/monitorix
chmod u=rX,g=rwX,o= -R /etc/monitorix
chown www-data:root -R /var/lib/monitorix
chmod u=rwX,g=rwX,o= -R /var/lib/monitorix

#=================================================
# GENERIC FINALIZATION
#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..."

yunohost service add monitorix

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=3

ynh_systemd_action --service_name=$app --action="restart" --log_path="/var/log/monitorix" --line_match=" - Ok, ready."

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..."

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Upgrade of $app completed" --last