1: <?php
  2: /**
  3:  * @filesource Kotchasan/Log/Logger.php
  4:  *
  5:  * @copyright 2016 Goragod.com
  6:  * @license http://www.kotchasan.com/license/
  7:  *
  8:  * @see http://www.kotchasan.com/
  9:  */
 10: 
 11: namespace Kotchasan\Log;
 12: 
 13: use Kotchasan\File;
 14: use Kotchasan\Language;
 15: use Psr\Log\LoggerInterface;
 16: use Psr\Log\LogLevel;
 17: 
 18: /**
 19:  * Kotchasan Logger Class (PSR-3).
 20:  *
 21:  * @author Goragod Wiriya <admin@goragod.com>
 22:  *
 23:  * @since 1.0
 24:  */
 25: class Logger extends AbstractLogger implements LoggerInterface
 26: {
 27:     /**
 28:      * @var Singleton สำหรับเรียกใช้ class นี้เพียงครั้งเดียวเท่านั้น
 29:      */
 30:     protected static $instance = null;
 31:     /**
 32:      * Log Levels.
 33:      *
 34:      * @var array
 35:      */
 36:     protected $logLevels = array(
 37:         LogLevel::EMERGENCY => 0,
 38:         LogLevel::ALERT => 1,
 39:         LogLevel::CRITICAL => 2,
 40:         LogLevel::ERROR => 3,
 41:         LogLevel::WARNING => 4,
 42:         LogLevel::NOTICE => 5,
 43:         LogLevel::INFO => 6,
 44:         LogLevel::DEBUG => 7,
 45:     );
 46:     /**
 47:      * รูปแบบของ log.
 48:      *
 49:      * @var array
 50:      */
 51:     protected $options = array(
 52:         'dateFormat' => 'Y-m-d H:i:s',
 53:         'logFormat' => '[{datetime}] {level}: {message} {context}',
 54:         'logFilePath' => 'logs/',
 55:         'extension' => 'php',
 56:     );
 57: 
 58:     /**
 59:      * create Logger instance (Singleton).
 60:      *
 61:      * @param array $options
 62:      *
 63:      * @return \static
 64:      */
 65:     public static function create(array $options = array())
 66:     {
 67:         if (null === self::$instance) {
 68:             self::$instance = new static($options);
 69:         }
 70: 
 71:         return self::$instance;
 72:     }
 73: 
 74:     /**
 75:      * Logs with an arbitrary level.
 76:      *
 77:      * @param mixed  $level
 78:      * @param string $message
 79:      * @param array  $context
 80:      */
 81:     public function log($level, $message, array $context = array())
 82:     {
 83:         $patt = array(
 84:             'datetime' => date($this->options['dateFormat'], time()),
 85:             'level' => isset($this->logLevels[$level]) ? strtoupper($level) : 'UNKNOW',
 86:             'message' => $message,
 87:             'context' => empty($context) ? '' : json_encode($context),
 88:         );
 89:         $message = $this->options['logFormat'];
 90:         foreach ($patt as $key => $value) {
 91:             $message = str_replace('{'.$key.'}', $value, $message);
 92:         }
 93:         $message = "\n".preg_replace('/[\s\n\t\r]+/', ' ', $message);
 94:         if (File::makeDirectory($this->options['logFilePath'])) {
 95:             // ไฟล์ log
 96:             switch ($level) {
 97:                 case LogLevel::DEBUG:
 98:                 case LogLevel::INFO:
 99:                 case LogLevel::ALERT:
100:                     $file = $this->options['logFilePath'].date('Y-m-d').'.'.$this->options['extension'];
101:                     break;
102:                 default:
103:                     $file = $this->options['logFilePath'].'error_log.'.$this->options['extension'];
104:                     break;
105:             }
106:             // save
107:             if (file_exists($file)) {
108:                 $f = @fopen($file, 'a');
109:             } else {
110:                 $f = @fopen($file, 'w');
111:                 if ($f && $this->options['extension'] == 'php') {
112:                     fwrite($f, '<'.'?php exit() ?'.'>');
113:                 }
114:             }
115:             if ($f) {
116:                 fwrite($f, $message);
117:                 fclose($f);
118:             } else {
119:                 printf(Language::get('File %s cannot be created or is read-only.'), 'log');
120:             }
121:         } else {
122:             printf(Language::get('Directory %s cannot be created or is read-only.'), 'logs/');
123:             echo $message;
124:         }
125:     }
126: 
127:     /**
128:      * Singleton.
129:      *
130:      * @param array $options
131:      */
132:     private function __construct($options)
133:     {
134:         $this->options['logFilePath'] = ROOT_PATH.'datas/logs/';
135:         foreach ($options as $key => $value) {
136:             $this->options[$key] = $value;
137:         }
138:     }
139: }
140: