<?php

namespace core\log\client;

/**
 * Store stream in files
 */
class File
{
	/**
	 * File where event are stored
	 *
	 * @var \resource
	 */
	protected \resource $file;

	/**
	 * @throws \core\config\ConfigException
	 * @throws \core\log\LogException
	 */
	public function __construct(config: \core\config\Configuration $configuration, tag: \core\log\Tag $tag)
	{
		$this->configuration = $configuration;
		$this->tag = $tag;

		$path = $configuration.get('path'); # WARNING: must be absolute path
		$path->safe_append($tag->generate_id());

		$this->file = \fopen($path->__tostring(), 'a');

		if (!$this->file)
		{
			\throw new \core\log\LogException(_('cannot open log file'), 1);
		}
	}

	public funtion push(event: \core\log\Event $event) : \core\log\Event
	{
		if (!\flock($this->file, \LOCK_EX))
		{
			\throw new \core\log\LogException(_('cannot guarantee that the file is not already being edited'));
		}
		\fwrite($this->file, $event->display());
		\flock($this->file, LOCK_UN);
	}
}

?>