Add backup/restore system

scripts/change_url

@@ -8,7 +8,6 @@
 
 source _common.sh
 source /usr/share/yunohost/helpers
-ynh_abort_if_errors
 
 #=================================================
 # RETRIEVE ARGUMENTS
@@ -31,6 +30,23 @@ ynh_script_progression --message="Loading installation settings..."
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
 
+#=================================================
+# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
+#=================================================
+ynh_script_progression --message="Backing up the app before changing its URL (may take a while)..." --weight=1
+
+# Backup the current version of the app
+ynh_backup_before_upgrade
+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_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
 #=================================================