mosbth / Anax-MVC

src/Log/CLogger.php

<?php

namespace Anax\Log;

/**
 * Anax default logger instance
 *
 * The message MUST be a string or object implementing __toString().
 *
 * The message MAY contain placeholders in the form: {foo} where foo
 * will be replaced by the context data in key "foo".
 *
 * The context array can contain arbitrary data, the only assumption that
 * can be made by implementors is that if an Exception instance is given
 * to produce a stack trace, it MUST be in a key named "exception".
 *
 * See https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md
 * for the full interface specification.
 */
class CLogger
{

    /**
     * Constans for loglevel.
     *
     */
    const EMERGENCY = 'emergency';
    const ALERT     = 'alert';
    const CRITICAL  = 'critical';
    const ERROR     = 'error';
    const WARNING   = 'warning';
    const NOTICE    = 'notice';
    const INFO      = 'info';
    const DEBUG     = 'debug';



    /**
     * Constans for loglevel.
     *
     */
    private $context = 'development'; // production, development or debug


    /**
     * Init the logger depending on its context production, development or debug.
     *
     * @param string $context as production, development or debug, default is development
     * @return $this
     */
    public function setContext($context = 'development')
    {

        switch ($context) {
            
            case 'production':
                break;
            
            case 'development':
                error_reporting(-1);              // Report all type of errors
                ini_set('display_errors', 1);     // Display all errors
                ini_set('output_buffering', 0);   // Do not buffer output

                set_exception_handler(function ($exception) {
                    echo "Anax: Uncaught exception: <p>" .
                        $exception->getMessage() . "</p><pre>" .
                        $exception->getTraceAsString() . "</pre>";
                });
                break;
            
            case 'debug':
                break;
            
            default:
                throw new \Exception('Unknown context.');
                break;

break; does not seem to be reachable.

        }

        $this->context = $context;
        return $this;
    }



    /**
     * Logs with an arbitrary level.
     *
     * @param mixed $level
     * @param string $message
     * @param array $context
     * @return null
     */
    public function log($level, $message, array $context = array())
    {
        echo "Level: " . $level . "<br>"
            . "Message: " . $message . "<br>"
            . htmlentities(print_r($context, 1)) . "<br>";
    }



    /**
     * System is unusable.
     *
     * @param string $message
     * @param array $context
     * @return null
     */
    public function emergency($message, array $context = array())
    {
        $this->log(self::EMERGENCY, $message, $context);
    }



    /**
     * Action must be taken immediately.
     *
     * Example: Entire website down, database unavailable, etc. This should
     * trigger the SMS alerts and wake you up.
     *
     * @param string $message
     * @param array $context
     * @return null
     */
    public function alert($message, array $context = array())
    {
        $this->log(self::ALERT, $message, $context);
    }



    /**
     * Critical conditions.
     *
     * Example: Application component unavailable, unexpected exception.
     *
     * @param string $message
     * @param array $context
     * @return null
     */
    public function critical($message, array $context = array())
    {
        $this->log(self::CRITICAL, $message, $context);
    }



    /**
     * Runtime errors that do not require immediate action but should typically
     * be logged and monitored.
     *
     * @param string $message
     * @param array $context
     * @return null
     */
    public function error($message, array $context = array())
    {
        $this->log(self::ERROR, $message, $context);
    }



    /**
     * Exceptional occurrences that are not errors.
     *
     * Example: Use of deprecated APIs, poor use of an API, undesirable things
     * that are not necessarily wrong.
     *
     * @param string $message
     * @param array $context
     * @return null
     */
    public function warning($message, array $context = array())
    {
        $this->log(self::WARNING, $message, $context);
    }



    /**
     * Normal but significant events.
     *
     * @param string $message
     * @param array $context
     * @return null
     */
    public function notice($message, array $context = array())
    {
        $this->log(self::NOTICE, $message, $context);
    }



    /**
     * Interesting events.
     *
     * Example: User logs in, SQL logs.
     *
     * @param string $message
     * @param array $context
     * @return null
     */
    public function info($message, array $context = array())
    {
        $this->log(self::INFO, $message, $context);
    }



    /**
     * Detailed debug information.
     *
     * @param string $message
     * @param array $context
     * @return null
     */
    public function debug($message, array $context = array())
    {
        $this->log(self::DEBUG, $message, $context);
    }
}