<?php

/*
 * This file is part of Mustache.php.
 *
 * (c) 2010-2026 Justin Hileman
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Mustache;

interface Logger
{
    /**
     * Psr\Log compatible log levels.
     */
    const EMERGENCY = 'emergency';
    const ALERT     = 'alert';
    const CRITICAL  = 'critical';
    const ERROR     = 'error';
    const WARNING   = 'warning';
    const NOTICE    = 'notice';
    const INFO      = 'info';
    const DEBUG     = 'debug';

    /**
     * System is unusable.
     *
     * @param string $message
     */
    public function emergency($message, array $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 $message
     */
    public function alert($message, array $context = []);

    /**
     * Critical conditions.
     *
     * Example: Application component unavailable, unexpected exception.
     *
     * @param string $message
     */
    public function critical($message, array $context = []);

    /**
     * Runtime errors that do not require immediate action but should typically
     * be logged and monitored.
     *
     * @param string $message
     */
    public function error($message, array $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 $message
     */
    public function warning($message, array $context = []);

    /**
     * Normal but significant events.
     *
     * @param string $message
     */
    public function notice($message, array $context = []);

    /**
     * Interesting events.
     *
     * Example: User logs in, SQL logs.
     *
     * @param string $message
     */
    public function info($message, array $context = []);

    /**
     * Detailed debug information.
     *
     * @param string $message
     */
    public function debug($message, array $context = []);

    /**
     * Logs with an arbitrary level.
     *
     * @param mixed  $level
     * @param string $message
     */
    public function log($level, $message, array $context = []);
}
