#!/bin/bash

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

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

#=================================================
# RETRIEVE ARGUMENTS
#=================================================

old_domain=$YNH_APP_OLD_DOMAIN
old_path=$YNH_APP_OLD_PATH

new_domain=$YNH_APP_NEW_DOMAIN
new_path=$YNH_APP_NEW_PATH

app=$YNH_APP_INSTANCE_NAME

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

# Needed for helper "ynh_add_nginx_config"
final_path=$(ynh_app_setting_get --app=$app --key=final_path)

# Add settings here as needed by your application
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=db_pwd)

#=================================================
# BACKUP BEFORE CHANGE URL THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before changing its URL (may take a while)..."

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	ynh_clean_check_starting
	# Remove the new domain config file, the remove script won't do it as it doesn't know yet its location.
	ynh_secure_remove --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"

	# Restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# CHECK WHICH PARTS SHOULD BE CHANGED
#=================================================

change_domain=0
if [ "$old_domain" != "$new_domain" ]
then
	change_domain=1
fi

change_path=0
if [ "$old_path" != "$new_path" ]
then
	change_path=1
fi

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# 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"

#=================================================
# MODIFY URL IN NGINX CONF
#=================================================
ynh_script_progression --message="Updating NGINX web server configuration..."

nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf

# Change the path in the NGINX config file
if [ $change_path -eq 1 ]
then
	# Make a backup of the original NGINX config file if modified
	ynh_backup_if_checksum_is_different --file="$nginx_conf_path"
	# Set global variables for NGINX helper
	domain="$old_domain"
	path_url="$new_path"
	# Create a dedicated NGINX config
	ynh_add_nginx_config
fi

# Change the domain for NGINX
if [ $change_domain -eq 1 ]
then
	# Delete file checksum for the old conf file location
	ynh_delete_file_checksum --file="$nginx_conf_path"
	mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
	# Store file checksum for the new config file location
	ynh_store_file_checksum --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
fi
ynh_add_config --template="../conf/nginx_status.conf" --destination="/etc/nginx/conf.d/monitorix_status.conf"

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

domain="$new_domain"
path_url="$new_path"

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

# Start a systemd service
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="Change of URL completed for $app" --last