<?php

namespace Bitrix\Disk\Document;

use Bitrix\Disk\Document\Upload\Office365ResumableUpload;
use Bitrix\Disk\ShowSession;
use Bitrix\Disk\TypeFile;
use Bitrix\Main\Localization\Loc;
use Bitrix\Main\Web\Uri;

Loc::loadMessages(__FILE__);

class Office365Handler extends OneDriveHandler implements IViewer
{
	const SUFFIX_TO_CREATE_LINK           = 'createLink';
	const SUFFIX_TO_CREATE_UPLOAD_SESSION = 'createUploadSession';

	/**
	 * Internal code. Identificate document handler
	 *
	 * Max length is 10 chars
	 * @throws \Bitrix\Main\NotImplementedException
	 * @return string
	 */
	public static function getCode()
	{
		return 'office365';
	}

	/**
	 * Public name document handler. May show in user interface.
	 * @throws \Bitrix\Main\NotImplementedException
	 * @return string
	 */
	public static function getName()
	{
		return Loc::getMessage('DISK_OFFICE365_HANDLER_NAME');
	}

	/**
	 * Public name storage of documents. May show in user interface.
	 * @throws \Bitrix\Main\NotImplementedException
	 * @return string
	 */
	public static function getStorageName()
	{
		return Loc::getMessage('DISK_OFFICE365_HANDLER_NAME_STORAGE');
	}

	/**
	 * Returns OAuth service for working with OneDrive for Business.
	 *
	 * @return \CSocServOffice365OAuth|\CSocServAuth
	 */
	protected function getOAuthService()
	{
		return new \CSocServOffice365OAuth($this->userId);
	}

	protected function instantiateResumableUpload(FileData $fileData)
	{
		return new Office365ResumableUpload($this, $fileData);
	}

	/**
	 * Returns url root for API.
	 *
	 * @return string
	 */
	protected function getApiUrlRoot()
	{
		return $this
			->getOAuthService()
			->getEntityOAuth()
				->getResource() . \COffice365OAuthInterface::VERSION . "/me"
		;
	}
	/**
	 * Returns scopes.
	 *
	 * @return array
	 */
	protected function getScopes()
	{
		return array(
			'wl.signin',
			'wl.offline_access',
			'onedrive.readwrite',
		);
	}

	/**
	 * Gets data for showing preview file.
	 * Array must be contain keys: id, viewUrl, neededDelete, neededCheckView.
	 *
	 * @param FileData $fileData
	 * @return array|null
	 */
	public function getDataForViewFile(FileData $fileData)
	{
		$dataForViewFile = parent::getDataForViewFile($fileData);
		if(!$dataForViewFile)
		{
			return null;
		}

		if(!empty($dataForViewFile['neededDelete']))
		{
			$fileData->setLinkInService($dataForViewFile['viewUrl']);
			ShowSession::register($this, $fileData, $this->errorCollection);
		}

		return $dataForViewFile;
	}

	/**
	 * Returns shared link on the document, which possible to use in iframe to view document.
	 *
	 * @param FileData $fileData File data.
	 * @return null|string
	 */
	protected function getSharedEmbedLink(FileData $fileData)
	{
		/** @see \Bitrix\Disk\Document\OneDriveHandler::getSharedLink() */
		$link = $this->retryMethod('getSharedLink', array($fileData, self::SHARED_LINK_TYPE_VIEW));
		if($link === null)
		{
			return null;
		}

		return (new Uri($link))->addParams([
			'action' => 'embedview',
			'wdStartOn' => 1,
		])->getLocator();
	}

	/**
	 * Shares file to edit for anyone by id.
	 *
	 * @param FileData $fileData
	 * @internal
	 * @return bool
	 */
	public function shareFileToEdit(FileData $fileData)
	{
		if(!$this->checkRequiredInputParams($fileData->toArray(), array(
			'id',
		)))
		{
			return false;
		}

		$linkInService = $this->getSharedLink($fileData, static::SHARED_LINK_TYPE_EDIT);
		if(!$linkInService)
		{
			return false;
		}
		
		$fileData->setLinkInService($linkInService);

		return true;
	}

	/**
	 * Gets a file's metadata by ID.
	 *
	 * @param FileData $fileData
	 * @return array|null Describes file (id, title, size)
	 */
	public function getFileMetadata(FileData $fileData)
	{
		$fileMetadata = parent::getFileMetadata($fileData);
		if(empty($fileMetadata['mimeType']))
		{
			$fileMetadata['mimeType'] = TypeFile::getMimeTypeByFilename($fileMetadata['name']);
		}

		return $fileMetadata;
	}

	protected function getUploadPath(FileData $fileData)
	{
		$fileName = $fileData->getName();
		$fileName = 'document.' . getFileExtension($fileName);
		$fileName = $this->convertToUtf8($fileName);
		$fileName = rawurlencode($fileName);

		return $this->getApiUrlRoot() . "/drive/root:/'{$fileName}:/";
	}
}