<?php
/**
* Since 2013 Ovidiu Cimpean.
*
* Ovidiu Cimpean - Newsletter Pro © All rights reserved.
*
* DISCLAIMER
*
* Do not edit, modify or copy this file.
* If you wish to customize it, contact us at addons4prestashop@gmail.com.
*
* @author    Ovidiu Cimpean <addons4prestashop@gmail.com>
* @copyright Since 2013 Ovidiu Cimpean
* @license   Do not edit, modify or copy this file
*
* @version   Release: 4
*/

class NewsletterProLog
{
    const MAX_FILE_SIZE = 10485760;
    const ERROR_FILE = 'errors.log';
    const LOG_FILE = 'info.log';
    const SEND_FILE = 'send.log';

    private $visible = false;

    private $log = [];

    public static function newInstance()
    {
        return new self();
    }

    public function show()
    {
        $this->visible = true;

        return $this;
    }

    public function hide()
    {
        $this->visible = false;

        return $this;
    }

    public function visible($bool)
    {
        $this->visible = (bool) $bool;

        return $this;
    }

    public function add($string)
    {
        if ($this->visible) {
            $this->log[] = $string;
        }

        return $this;
    }

    public function display($separator = '<br>')
    {
        return implode($separator, $this->log);
    }

    public function clearLog()
    {
        $this->log = [];

        return $this;
    }

    public function displayFlush()
    {
        if ($this->visible) {
            @ini_set('output_buffering', 'on');
            @ini_set('zlib.output_compression', 0);
            @ob_implicit_flush(true);
            @ob_end_flush();

            echo $this->display("\n");
            $this->clearLog();

            @ob_flush();
            @flush();
        }
    }

    public function writeSend()
    {
        if ($this->visible) {
            $content = $this->display("\n");

            if (!empty($this->log)) {
                self::write($content, self::SEND_FILE);
            }

            $this->clearLog();
        }
    }

    public static function clearSend()
    {
        self::clear(self::SEND_FILE);
    }

    public static function write($content, $filename = null, $filesize = null, $content_only = false)
    {
        $status = [];

        if (is_array($content)) {
            foreach ($content as $cont) {
                $status[] = @self::writeString($cont, $filename, $filesize, $content_only);
            }
        } else {
            $status[] = @self::writeString($content, $filename, $filesize, $content_only);
        }

        return !in_array(false, $status);
    }

    public static function writeStrip($content, $filename = null, $filesize = null)
    {
        return @self::write(strip_tags($content), $filename, $filesize);
    }

    public static function writeString($content, $filename = null, $filesize = null, $content_only = false)
    {
        $success = false;

        if (!isset($filename)) {
            $filename = self::LOG_FILE;
        }

        $filename = self::getLogDir().'/'.$filename;

        if (!isset($filesize)) {
            $filesize = self::MAX_FILE_SIZE;
        }

        if (filesize($filename) > $filesize) {
            @file_put_contents($filename, '');
        }

        $handle = @fopen($filename, 'a+');
        if (false !== $handle) {
            if ($content_only) {
                $str = '';
                $str .= $content;
                $str .= "\r\n";
            } else {
                $str = '';
                if (isset($_SERVER['REMOTE_ADDR'])) {
                    $str .= date('Y-m-d H:i:s').' ['.$_SERVER['REMOTE_ADDR'].'] > ';
                } else {
                    $str .= date('Y-m-d H:i:s').' > ';
                }
                $str .= $content;
                $str .= "\r\n";
            }

            if (false !== @fwrite($handle, $str)) {
                $success = true;
            }
        }

        @fclose($handle);

        return $success;
    }

    public static function clear($filename = null)
    {
        if (!isset($filename)) {
            $filename = self::LOG_FILE;
        }

        $filename = self::getLogDir().'/'.$filename;
        if (file_exists($filename)) {
            if (false === @file_put_contents($filename, '')) {
                return false;
            }
        }

        return true;
    }

    public static function getLogDir()
    {
        return realpath(dirname(__FILE__).'/../logs');
    }

    public static function getLogFile($filename)
    {
        return self::getLogDir().'/'.$filename;
    }

    public static function getFiles()
    {
        return [
            self::LOG_FILE,
            self::ERROR_FILE,
            self::SEND_FILE,
        ];
    }
}