pabx-app/asterisk/var_lib_asterisk/scripts/backup/shared/Backup.php

<?php

    require_once "util/FTPAccess.php";
    require_once "util/SSH.php";
    require_once "util/Logger.php";

    /**
     * Classe que mantem as funcionalidades dos metodos de arquivos e envio
     *
     * @author Lucas Awade
     * @date 28/01/2020
     */
    class Backup {

        /** @logger */
        private $log;
        
        const CONF_ACTIVE_LOGGER = true;
        
        /**
         * Escrita de Log 
         * @return \Logger
         */
        public function log() {
            if(!$this->log){
                $log = new Logger('backupfiles', self::CONF_ACTIVE_LOGGER);
                $this->log = $log;
                return $log;
            }
            return $this->log;
        }
        
        /**
         * Adiciona barra no final da string de pasta
         * @param string $string
         * @return string
         */
        protected function strslash($string) {
            if (substr($string, -1) != "/") {
                return $string . "/";
            } else {
                return $string;
            }
        }

        /**
         * Remove slash no inicio do diretorio
         * @param string $string
         * @return string
         */
        protected function removeslash($string){
            if (substr($string, 0, 1) == "/") {
                return substr($string, 1);
            } else {
                return $string;
            }
        }
        
        /**
         * Renomeia as pastas de acordo com o periodo do backup do dia anterior;
         * @return array
         */
        protected function date_folders(){
            $year = date('Y');
            $month = date('m');
            $folders = array('year' => $year, 'month' => $month);
            
            if(date('m-d') == '01-01'){
                $folders['year'] = $year - 1;
            }
            
            if(date('d') == '01'){
                $folders['month'] = $month - 1;
            }

            return $folders;
        }
    }