#!/bin/bash

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

# IMPORT GENERIC HELPERS
source /usr/share/yunohost/helpers
source ./experimental_helper.sh

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

# Import common cmd
source ./_common.sh

#=================================================
# 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
#=================================================

admin=$(ynh_app_setting_get "$app" admin)
port=$(ynh_app_setting_get "$app" port)
port_hub=$(ynh_app_setting_get "$app" port_hub)
port_http_proxy=$(ynh_app_setting_get "$app" port_http_proxy)

#=================================================
# CHECK PATHS SYNTAX
#=================================================

test -n "$old_path" || old_path="/"
test -n "$new_path" || new_path="/"
new_path=$(ynh_normalize_url_path $new_path)
old_path=$(ynh_normalize_url_path $old_path)

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

#=================================================
# 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 SERVICE
#=================================================

yunohost service stop jupyterlab

#=================================================
# MODIFY URL IN NGINX
#=================================================
nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf

if [ $change_path -eq 1 ]
then
	ynh_print_info "Changing path..."
	
	# Make a backup of the original nginx config file if modified
	ynh_backup_if_checksum_is_different "$nginx_conf_path"
	# Set global variables for nginx helper
	domain="$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
	ynh_print_info "Changing domain..."

  # Delete file checksum for the old conf file location
	ynh_delete_file_checksum "$nginx_conf_path"
	mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
	# Store file checksum for the new config file location
	ynh_store_file_checksum "/etc/nginx/conf.d/$new_domain.d/$app.conf"
fi

#=================================================
# CONFIGURE JUPYTERLAB
#=================================================

config_jupyterlab

#=================================================
# GENERIC FINALISATION
#=================================================
# RELOAD NGINX
#=================================================

systemctl reload nginx

#=================================================
# START SERVICE
#=================================================

ynh_systemd_action -n $app -a restart -l "JupyterHub is now running at" -p "systemd"