<?php
/*+***********************************************************************************
 * The contents of this file are subject to the vtiger CRM Public License Version 1.0
 * ("License"); You may not use this file except in compliance with the License
 * The Original Code is:  vtiger CRM Open Source
 * The Initial Developer of the Original Code is vtiger.
 * Portions created by vtiger are Copyright (C) vtiger.
 * All Rights Reserved.
 *************************************************************************************/

class ModComments_DownloadFile_Action extends Vtiger_Action_Controller {

	public function checkPermission(Vtiger_Request $request) {
		$moduleName = $request->getModule();
		$moduleModel = Vtiger_Module_Model::getInstance($moduleName);

		$currentUserPrivilegesModel = Users_Privileges_Model::getCurrentUserPrivilegesModel();
		if(!$currentUserPrivilegesModel->hasModulePermission($moduleModel->getId())) {
			throw new AppException(vtranslate('LBL_PERMISSION_DENIED'));
		}
	}

	public function process(Vtiger_Request $request) {
		$fileId = $request->get('fileid');
		$recordId = $request->get('record');
		
		file_put_contents('logs/debug.log', '[' . date('Y-m-d H:i:s') . '] MODCOMMENTS_DOWNLOAD: recordId=' . $recordId . ', fileId=' . $fileId . PHP_EOL, FILE_APPEND);
		
		if (empty($fileId)) {
			throw new AppException('File ID is required');
		}

		// Проверяем что файл связан с этим комментарием
		global $adb;
		$query = "SELECT COUNT(*) as count FROM vtiger_seattachmentsrel WHERE crmid = ? AND attachmentsid = ?";
		$result = $adb->pquery($query, array($recordId, $fileId));
		$row = $adb->fetchByAssoc($result);
		
		if ($row['count'] == 0) {
			file_put_contents('logs/debug.log', '[' . date('Y-m-d H:i:s') . '] MODCOMMENTS_DOWNLOAD_ERROR: File not linked to comment' . PHP_EOL, FILE_APPEND);
			throw new AppException('File not found or not accessible');
		}

		// Получаем информацию о файле
		$query = "SELECT * FROM vtiger_attachments WHERE attachmentsid = ?";
		$result = $adb->pquery($query, array($fileId));
		
		if ($adb->num_rows($result) == 0) {
			file_put_contents('logs/debug.log', '[' . date('Y-m-d H:i:s') . '] MODCOMMENTS_DOWNLOAD_ERROR: File not found in attachments' . PHP_EOL, FILE_APPEND);
			throw new AppException('File not found');
		}
		
		$fileInfo = $adb->fetchByAssoc($result);
		file_put_contents('logs/debug.log', '[' . date('Y-m-d H:i:s') . '] MODCOMMENTS_DOWNLOAD_INFO: ' . print_r($fileInfo, true) . PHP_EOL, FILE_APPEND);
		
		// Проверяем есть ли S3 URL в vtiger_notes
		$query = "SELECT s3_url FROM vtiger_notes WHERE notesid = ?";
		$result = $adb->pquery($query, array($fileId));
		
		if ($adb->num_rows($result) > 0) {
			$noteInfo = $adb->fetchByAssoc($result);
			if (!empty($noteInfo['s3_url'])) {
				file_put_contents('logs/debug.log', '[' . date('Y-m-d H:i:s') . '] MODCOMMENTS_DOWNLOAD_S3: ' . $noteInfo['s3_url'] . PHP_EOL, FILE_APPEND);
				
				// Перенаправляем на S3 URL
				header('Location: ' . $noteInfo['s3_url']);
				exit;
			}
		}
		
		// Если S3 URL не найден в notes, пытаемся собрать его из attachments
		if (!empty($fileInfo['path']) && !empty($fileInfo['storedname'])) {
			// Проверяем что это S3 путь
			if (strpos($fileInfo['path'], 's3://') === 0) {
				// Извлекаем bucket из path
				$bucket = str_replace('s3://', '', $fileInfo['path']);
				
				// Собираем S3 URL
				$s3Url = 'https://s3.twcstorage.ru/' . $bucket . '/' . $fileInfo['storedname'];
				
				file_put_contents('logs/debug.log', '[' . date('Y-m-d H:i:s') . '] MODCOMMENTS_DOWNLOAD_S3_CONSTRUCTED: ' . $s3Url . PHP_EOL, FILE_APPEND);
				
				// Перенаправляем на S3 URL
				header('Location: ' . $s3Url);
				exit;
			}
		}
		
		// Если S3 URL нет, пытаемся найти локальный файл
		$filePath = $fileInfo['path'] . $fileInfo['attachmentsid'] . '_' . $fileInfo['name'];
		
		if (file_exists($filePath)) {
			file_put_contents('logs/debug.log', '[' . date('Y-m-d H:i:s') . '] MODCOMMENTS_DOWNLOAD_LOCAL: ' . $filePath . PHP_EOL, FILE_APPEND);
			
			header('Content-Type: ' . $fileInfo['type']);
			header('Content-Disposition: attachment; filename="' . $fileInfo['name'] . '"');
			header('Content-Length: ' . filesize($filePath));
			
			readfile($filePath);
			exit;
		}
		
		file_put_contents('logs/debug.log', '[' . date('Y-m-d H:i:s') . '] MODCOMMENTS_DOWNLOAD_ERROR: File not found anywhere' . PHP_EOL, FILE_APPEND);
		throw new AppException('File not found on server');
	}
}
?>