#!/bin/bash

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 "Loading installation settings..."

# Needed for helper "ynh_config_add_nginx"
final_path=$(ynh_app_setting_get --key=final_path)
port=$(ynh_app_setting_get --key=port)

# Add settings here as needed by your application
#db_name=$(ynh_app_setting_get --key=db_name)
#db_user=$db_name
#db_pwd=$(ynh_app_setting_get --key=db_pwd)

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

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

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

#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression "Stopping $app's systemd service..."

ynh_systemctl --service=$app --action="stop"

#=================================================
# MODIFY URL IN NGINX CONF
#=================================================
ynh_script_progression "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 [ $change_path -eq 1 ]
then
	# Make a backup of the original NGINX config file if modified
	ynh_backup_if_checksum_is_different "$nginx_conf_path"
	# Set global variables for NGINX helper
	domain="$old_domain"
	path_url="$new_path"
	# Create a dedicated NGINX config
	ynh_config_add_nginx
fi

# Change the domain for NGINX
if [ $change_domain -eq 1 ]
then
	# Delete file checksum for the old conf file location
	ynh_delete_file_checksum "$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

#=================================================
# SPECIFIC MODIFICATIONS
#=================================================
# ...
#=================================================

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression "Starting $app's systemd service..."

ynh_systemctl --service=$app --action="start"

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

ynh_systemctl --service=nginx --action=reload

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

ynh_script_progression "Change of URL completed for $app"