<?php
/**
 * Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
 * This file is licensed under the Affero General Public License version 3 or
 * later.
 * See the COPYING-README file.
 */

namespace OC\Files;

class FileInfo implements \OCP\Files\FileInfo, \ArrayAccess {
	/**
	 * @var array $data
	 */
	private $data;

	/**
	 * @var string $path
	 */
	private $path;

	/**
	 * @var \OC\Files\Storage\Storage $storage
	 */
	private $storage;

	/**
	 * @var string $internalPath
	 */
	private $internalPath;

	/**
	 * @var \OCP\Files\Mount\IMountPoint
	 */
	private $mount;

	/**
	 * @param string|boolean $path
	 * @param Storage\Storage $storage
	 * @param string $internalPath
	 * @param array $data
	 * @param \OCP\Files\Mount\IMountPoint $mount
	 */
	public function __construct($path, $storage, $internalPath, $data, $mount) {
		$this->path = $path;
		$this->storage = $storage;
		$this->internalPath = $internalPath;
		$this->data = $data;
		$this->mount = $mount;
	}

	public function offsetSet($offset, $value) {
		$this->data[$offset] = $value;
	}

	public function offsetExists($offset) {
		return isset($this->data[$offset]);
	}

	public function offsetUnset($offset) {
		unset($this->data[$offset]);
	}

	public function offsetGet($offset) {
		if ($offset === 'type') {
			return $this->getType();
		} elseif (isset($this->data[$offset])) {
			return $this->data[$offset];
		} else {
			return null;
		}
	}

	/**
	 * @return string
	 */
	public function getPath() {
		return $this->path;
	}

	/**
	 * @return \OCP\Files\Storage
	 */
	public function getStorage() {
		return $this->storage;
	}

	/**
	 * @return string
	 */
	public function getInternalPath() {
		return $this->internalPath;
	}

	/**
	 * @return int
	 */
	public function getId() {
		return $this->data['fileid'];
	}

	/**
	 * @return string
	 */
	public function getMimetype() {
		return $this->data['mimetype'];
	}

	/**
	 * @return string
	 */
	public function getMimePart() {
		return $this->data['mimepart'];
	}

	/**
	 * @return string
	 */
	public function getName() {
		return basename($this->getPath());
	}

	/**
	 * @return string
	 */
	public function getEtag() {
		return $this->data['etag'];
	}

	/**
	 * @return int
	 */
	public function getSize() {
		return isset($this->data['size']) ? $this->data['size'] : 0;
	}

	/**
	 * @return int
	 */
	public function getMTime() {
		return $this->data['mtime'];
	}

	/**
	 * @return bool
	 */
	public function isEncrypted() {
		return $this->data['encrypted'];
	}

	/**
	 * @return int
	 */
	public function getUnencryptedSize() {
		return isset($this->data['unencrypted_size']) ? $this->data['unencrypted_size'] : 0;
	}

	/**
	 * @return int
	 */
	public function getPermissions() {
		return $this->data['permissions'];
	}

	/**
	 * @return \OCP\Files\FileInfo::TYPE_FILE|\OCP\Files\FileInfo::TYPE_FOLDER
	 */
	public function getType() {
		if (!isset($this->data['type'])) {
			$this->data['type'] = ($this->getMimetype() === 'httpd/unix-directory') ? self::TYPE_FOLDER : self::TYPE_FILE;
		}
		return $this->data['type'];
	}

	public function getData() {
		return $this->data;
	}

	/**
	 * @param int $permissions
	 * @return bool
	 */
	protected function checkPermissions($permissions) {
		return ($this->getPermissions() & $permissions) === $permissions;
	}

	/**
	 * @return bool
	 */
	public function isReadable() {
		return $this->checkPermissions(\OCP\Constants::PERMISSION_READ);
	}

	/**
	 * @return bool
	 */
	public function isUpdateable() {
		return $this->checkPermissions(\OCP\Constants::PERMISSION_UPDATE);
	}

	/**
	 * Check whether new files or folders can be created inside this folder
	 *
	 * @return bool
	 */
	public function isCreatable() {
		return $this->checkPermissions(\OCP\Constants::PERMISSION_CREATE);
	}

	/**
	 * @return bool
	 */
	public function isDeletable() {
		return $this->checkPermissions(\OCP\Constants::PERMISSION_DELETE);
	}

	/**
	 * @return bool
	 */
	public function isShareable() {
		return $this->checkPermissions(\OCP\Constants::PERMISSION_SHARE);
	}

	/**
	 * Check if a file or folder is shared
	 *
	 * @return bool
	 */
	public function isShared() {
		$sid = $this->getStorage()->getId();
		if (!is_null($sid)) {
			$sid = explode(':', $sid);
			return ($sid[0] === 'shared');
		}

		return false;
	}

	public function isMounted() {
		$sid = $this->getStorage()->getId();
		if (!is_null($sid)) {
			$sid = explode(':', $sid);
			return ($sid[0] !== 'local' and $sid[0] !== 'home' and $sid[0] !== 'shared');
		}

		return false;
	}

	/**
	 * Get the mountpoint the file belongs to
	 *
	 * @return \OCP\Files\Mount\IMountPoint
	 */
	public function getMountPoint() {
		return $this->mount;
	}
}