<?php

use Utopia\App;
use Utopia\Exception;
use Utopia\Validator\ArrayList;
use Utopia\Validator\WhiteList;
use Utopia\Validator\Range;
use Utopia\Validator\Text;
use Utopia\Validator\HexColor;
use Utopia\Cache\Cache;
use Utopia\Cache\Adapter\Filesystem;
use Appwrite\ClamAV\Network;
use Utopia\Database\Validator\Authorization;
use Appwrite\Database\Validator\CustomId;
use Utopia\Database\Document;
use Utopia\Database\Validator\UID;
use Utopia\Storage\Storage;
use Utopia\Storage\Validator\File;
use Utopia\Storage\Validator\FileSize;
use Utopia\Storage\Validator\Upload;
use Utopia\Storage\Compression\Algorithms\GZIP;
use Utopia\Image\Image;
use Appwrite\OpenSSL\OpenSSL;
use Appwrite\Utopia\Response;
use Utopia\Config\Config;
use Utopia\Database\Database;
use Utopia\Database\Query;

App::post('/v1/storage/files')
    ->desc('Create File')
    ->groups(['api', 'storage'])
    ->label('scope', 'files.write')
    ->label('event', 'storage.files.create')
    ->label('sdk.auth', [APP_AUTH_TYPE_SESSION, APP_AUTH_TYPE_KEY, APP_AUTH_TYPE_JWT])
    ->label('sdk.namespace', 'storage')
    ->label('sdk.method', 'createFile')
    ->label('sdk.description', '/docs/references/storage/create-file.md')
    ->label('sdk.request.type', 'multipart/form-data')
    ->label('sdk.methodType', 'upload')
    ->label('sdk.response.code', Response::STATUS_CODE_CREATED)
    ->label('sdk.response.type', Response::CONTENT_TYPE_JSON)
    ->label('sdk.response.model', Response::MODEL_FILE)
    ->param('fileId', '', new CustomId(), 'Unique Id. Choose your own unique ID or pass the string `unique()` to auto generate it. Valid chars are a-z, A-Z, 0-9, period, hyphen, and underscore. Can\'t start with a special char. Max length is 36 chars.')
    ->param('file', [], new File(), 'Binary file.', false)
    ->param('read', null, new ArrayList(new Text(64)), 'An array of strings with read permissions. By default only the current user is granted with read permissions. [learn more about permissions](/docs/permissions) and get a full list of available permissions.', true)
    ->param('write', null, new ArrayList(new Text(64)), 'An array of strings with write permissions. By default only the current user is granted with write permissions. [learn more about permissions](/docs/permissions) and get a full list of available permissions.', true)
    ->inject('request')
    ->inject('response')
    ->inject('dbForInternal')
    ->inject('user')
    ->inject('audits')
    ->inject('usage')
    ->action(function ($fileId, $file, $read, $write, $request, $response, $dbForInternal, $user, $audits, $usage) {
        /** @var Utopia\Swoole\Request $request */
        /** @var Appwrite\Utopia\Response $response */
        /** @var Utopia\Database\Database $dbForInternal */
        /** @var Utopia\Database\Document $user */
        /** @var Appwrite\Event\Event $audits */
        /** @var Appwrite\Stats\Stats $usage */

        $file = $request->getFiles('file');

        /*
         * Validators
         */
        //$fileType = new FileType(array(FileType::FILE_TYPE_PNG, FileType::FILE_TYPE_GIF, FileType::FILE_TYPE_JPEG));
        $fileSize = new FileSize(App::getEnv('_APP_STORAGE_LIMIT', 0));
        $upload = new Upload();

        if (empty($file)) {
            throw new Exception('No file sent', 400);
        }

        // Make sure we handle a single file and multiple files the same way
        $file['name'] = (\is_array($file['name']) && isset($file['name'][0])) ? $file['name'][0] : $file['name'];
        $file['tmp_name'] = (\is_array($file['tmp_name']) && isset($file['tmp_name'][0])) ? $file['tmp_name'][0] : $file['tmp_name'];
        $file['size'] = (\is_array($file['size']) && isset($file['size'][0])) ? $file['size'][0] : $file['size'];

        // Check if file type is allowed (feature for project settings?)
        //if (!$fileType->isValid($file['tmp_name'])) {
        //throw new Exception('File type not allowed', 400);
        //}

        if (!$fileSize->isValid($file['size'])) { // Check if file size is exceeding allowed limit
            throw new Exception('File size not allowed', 400);
        }

        $device = Storage::getDevice('files');

        if (!$upload->isValid($file['tmp_name'])) {
            throw new Exception('Invalid file', 403);
        }

        // Save to storage
        $size = $device->getFileSize($file['tmp_name']);
        $path = $device->getPath(\uniqid().'.'.\pathinfo($file['name'], PATHINFO_EXTENSION));
        
        if (!$device->upload($file['tmp_name'], $path)) { // TODO deprecate 'upload' and replace with 'move'
            throw new Exception('Failed moving file', 500);
        }

        $mimeType = $device->getFileMimeType($path); // Get mime-type before compression and encryption

        if (App::getEnv('_APP_STORAGE_ANTIVIRUS') === 'enabled') { // Check if scans are enabled
            $antiVirus = new Network(App::getEnv('_APP_STORAGE_ANTIVIRUS_HOST', 'clamav'),
                (int) App::getEnv('_APP_STORAGE_ANTIVIRUS_PORT', 3310));

            if (!$antiVirus->fileScan($path)) {
                $device->delete($path);
                throw new Exception('Invalid file', 403);
            }
        }

        // Compression
        $compressor = new GZIP();
        $data = $device->read($path);
        $data = $compressor->compress($data);
        $key = App::getEnv('_APP_OPENSSL_KEY_V1');
        $iv = OpenSSL::randomPseudoBytes(OpenSSL::cipherIVLength(OpenSSL::CIPHER_AES_128_GCM));
        $data = OpenSSL::encrypt($data, OpenSSL::CIPHER_AES_128_GCM, $key, 0, $iv, $tag);

        if (!$device->write($path, $data, $mimeType)) {
            throw new Exception('Failed to save file', 500);
        }

        $sizeActual = $device->getFileSize($path);
        
        $file = $dbForInternal->createDocument('files', new Document([
            '$id' => $fileId == 'unique()' ? $dbForInternal->getId() : $fileId,
            '$read' => (is_null($read) && !$user->isEmpty()) ? ['user:'.$user->getId()] : $read ?? [], // By default set read permissions for user
            '$write' => (is_null($write) && !$user->isEmpty()) ? ['user:'.$user->getId()] : $write ?? [], // By default set write permissions for user
            'dateCreated' => \time(),
            'bucketId' => '',
            'name' => $file['name'],
            'path' => $path,
            'signature' => $device->getFileHash($path),
            'mimeType' => $mimeType,
            'sizeOriginal' => $size,
            'sizeActual' => $sizeActual,
            'algorithm' => $compressor->getName(),
            'comment' => '',
            'openSSLVersion' => '1',
            'openSSLCipher' => OpenSSL::CIPHER_AES_128_GCM,
            'openSSLTag' => \bin2hex($tag),
            'openSSLIV' => \bin2hex($iv),
        ]));

        $audits
            ->setParam('event', 'storage.files.create')
            ->setParam('resource', 'file/'.$file->getId())
        ;

        $usage
            ->setParam('storage', $sizeActual)
            ->setParam('storage.files.create', 1)
            ->setParam('bucketId', 'default')
        ;

        $response->setStatusCode(Response::STATUS_CODE_CREATED);
        $response->dynamic($file, Response::MODEL_FILE);
        ;
    });

App::get('/v1/storage/files')
    ->desc('List Files')
    ->groups(['api', 'storage'])
    ->label('scope', 'files.read')
    ->label('sdk.auth', [APP_AUTH_TYPE_SESSION, APP_AUTH_TYPE_KEY, APP_AUTH_TYPE_JWT])
    ->label('sdk.namespace', 'storage')
    ->label('sdk.method', 'listFiles')
    ->label('sdk.description', '/docs/references/storage/list-files.md')
    ->label('sdk.response.code', Response::STATUS_CODE_OK)
    ->label('sdk.response.type', Response::CONTENT_TYPE_JSON)
    ->label('sdk.response.model', Response::MODEL_FILE_LIST)
    ->param('search', '', new Text(256), 'Search term to filter your list results. Max length: 256 chars.', true)
    ->param('limit', 25, new Range(0, 100), 'Results limit value. By default will return maximum 25 results. Maximum of 100 results allowed per request.', true)
    ->param('offset', 0, new Range(0, 2000), 'Results offset. The default value is 0. Use this param to manage pagination.', true)
    ->param('after', '', new UID(), 'ID of the file used as the starting point for the query, excluding the file itself. Should be used for efficient pagination when working with large sets of data.', true)
    ->param('orderType', 'ASC', new WhiteList(['ASC', 'DESC'], true), 'Order result by ASC or DESC order.', true)
    ->inject('response')
    ->inject('dbForInternal')
    ->inject('usage')
    ->action(function ($search, $limit, $offset, $after, $orderType, $response, $dbForInternal, $usage) {
        /** @var Appwrite\Utopia\Response $response */
        /** @var Utopia\Database\Database $dbForInternal */
        /** @var Appwrite\Stats\Stats $usage */

        $queries = ($search) ? [new Query('name', Query::TYPE_SEARCH, $search)] : [];

        if (!empty($after)) {
            $afterFile = $dbForInternal->getDocument('files', $after);

            if ($afterFile->isEmpty()) {
                throw new Exception("File '{$after}' for the 'after' value not found.", 400);
            }
        }

        $usage
            ->setParam('storage.files.read', 1)
            ->setParam('bucketId', 'default')
        ;

        $response->dynamic(new Document([
            'files' => $dbForInternal->find('files', $queries, $limit, $offset, [], [$orderType], $afterFile ?? null),
            'sum' => $dbForInternal->count('files', $queries, APP_LIMIT_COUNT),
        ]), Response::MODEL_FILE_LIST);
    });

App::get('/v1/storage/files/:fileId')
    ->desc('Get File')
    ->groups(['api', 'storage'])
    ->label('scope', 'files.read')
    ->label('sdk.auth', [APP_AUTH_TYPE_SESSION, APP_AUTH_TYPE_KEY, APP_AUTH_TYPE_JWT])
    ->label('sdk.namespace', 'storage')
    ->label('sdk.method', 'getFile')
    ->label('sdk.description', '/docs/references/storage/get-file.md')
    ->label('sdk.response.code', Response::STATUS_CODE_OK)
    ->label('sdk.response.type', Response::CONTENT_TYPE_JSON)
    ->label('sdk.response.model', Response::MODEL_FILE)
    ->param('fileId', '', new UID(), 'File unique ID.')
    ->inject('response')
    ->inject('dbForInternal')
    ->inject('usage')
    ->action(function ($fileId, $response, $dbForInternal, $usage) {
        /** @var Appwrite\Utopia\Response $response */
        /** @var Utopia\Database\Database $dbForInternal */
        /** @var Appwrite\Stats\Stats $usage */

        $file = $dbForInternal->getDocument('files', $fileId);

        if (empty($file->getId())) {
            throw new Exception('File not found', 404);
        }
        $usage
            ->setParam('storage.files.read', 1)
            ->setParam('bucketId', 'default')
        ;
        $response->dynamic($file, Response::MODEL_FILE);
    });

App::get('/v1/storage/files/:fileId/preview')
    ->desc('Get File Preview')
    ->groups(['api', 'storage'])
    ->label('scope', 'files.read')
    ->label('sdk.auth', [APP_AUTH_TYPE_SESSION, APP_AUTH_TYPE_KEY, APP_AUTH_TYPE_JWT])
    ->label('sdk.namespace', 'storage')
    ->label('sdk.method', 'getFilePreview')
    ->label('sdk.description', '/docs/references/storage/get-file-preview.md')
    ->label('sdk.response.code', Response::STATUS_CODE_OK)
    ->label('sdk.response.type', Response::CONTENT_TYPE_IMAGE)
    ->label('sdk.methodType', 'location')
    ->param('fileId', '', new UID(), 'File unique ID')
    ->param('width', 0, new Range(0, 4000), 'Resize preview image width, Pass an integer between 0 to 4000.', true)
    ->param('height', 0, new Range(0, 4000), 'Resize preview image height, Pass an integer between 0 to 4000.', true)
    ->param('gravity', Image::GRAVITY_CENTER, new WhiteList(Image::getGravityTypes()), 'Image crop gravity. Can be one of ' . implode(",", Image::getGravityTypes()), true)
    ->param('quality', 100, new Range(0, 100), 'Preview image quality. Pass an integer between 0 to 100. Defaults to 100.', true)
    ->param('borderWidth', 0, new Range(0, 100), 'Preview image border in pixels. Pass an integer between 0 to 100. Defaults to 0.', true)
    ->param('borderColor', '', new HexColor(), 'Preview image border color. Use a valid HEX color, no # is needed for prefix.', true)
    ->param('borderRadius', 0, new Range(0, 4000), 'Preview image border radius in pixels. Pass an integer between 0 to 4000.', true)
    ->param('opacity', 1, new Range(0,1, Range::TYPE_FLOAT), 'Preview image opacity. Only works with images having an alpha channel (like png). Pass a number between 0 to 1.', true)
    ->param('rotation', 0, new Range(0,360), 'Preview image rotation in degrees. Pass an integer between 0 and 360.', true)
    ->param('background', '', new HexColor(), 'Preview image background color. Only works with transparent images (png). Use a valid HEX color, no # is needed for prefix.', true)
    ->param('output', '', new WhiteList(\array_keys(Config::getParam('storage-outputs')), true), 'Output format type (jpeg, jpg, png, gif and webp).', true)
    ->inject('request')
    ->inject('response')
    ->inject('project')
    ->inject('dbForInternal')
    ->inject('usage')
    ->action(function ($fileId, $width, $height, $gravity, $quality, $borderWidth, $borderColor, $borderRadius, $opacity, $rotation, $background, $output, $request, $response, $project, $dbForInternal, $usage) {
        /** @var Utopia\Swoole\Request $request */
        /** @var Appwrite\Utopia\Response $response */
        /** @var Utopia\Database\Document $project */
        /** @var Utopia\Database\Database $dbForInternal */
        /** @var Appwrite\Stats\Stats $stats */

        $storage = 'files';

        if (!\extension_loaded('imagick')) {
            throw new Exception('Imagick extension is missing', 500);
        }

        if (!Storage::exists($storage)) {
            throw new Exception('No such storage device', 400);
        }

        if ((\strpos($request->getAccept(), 'image/webp') === false) && ('webp' == $output)) { // Fallback webp to jpeg when no browser support
            $output = 'jpg';
        }

        $inputs = Config::getParam('storage-inputs');
        $outputs = Config::getParam('storage-outputs');
        $fileLogos = Config::getParam('storage-logos');

        $date = \date('D, d M Y H:i:s', \time() + (60 * 60 * 24 * 45)).' GMT';  // 45 days cache
        $key = \md5($fileId.$width.$height.$gravity.$quality.$borderWidth.$borderColor.$borderRadius.$opacity.$rotation.$background.$storage.$output);

        $file = $dbForInternal->getDocument('files', $fileId);

        if (empty($file->getId())) {
            throw new Exception('File not found', 404);
        }

        $path = $file->getAttribute('path');
        $type = \strtolower(\pathinfo($path, PATHINFO_EXTENSION));
        $algorithm = $file->getAttribute('algorithm');
        $cipher = $file->getAttribute('openSSLCipher');
        $mime = $file->getAttribute('mimeType');

        if (!\in_array($mime, $inputs)) {
            $path = (\array_key_exists($mime, $fileLogos)) ? $fileLogos[$mime] : $fileLogos['default'];
            $algorithm = null;
            $cipher = null;
            $background = (empty($background)) ? 'eceff1' : $background;
            $type = \strtolower(\pathinfo($path, PATHINFO_EXTENSION));
            $key = \md5($path.$width.$height.$gravity.$quality.$borderWidth.$borderColor.$borderRadius.$opacity.$rotation.$background.$storage.$output);
        }

        $compressor = new GZIP();
        $device = Storage::getDevice('files');

        if (!\file_exists($path)) {
            throw new Exception('File not found', 404);
        }

        $cache = new Cache(new Filesystem(APP_STORAGE_CACHE.'/app-'.$project->getId())); // Limit file number or size
        $data = $cache->load($key, 60 * 60 * 24 * 30 * 3 /* 3 months */);

        if ($data) {
            $output = (empty($output)) ? $type : $output;

            return $response
                ->setContentType((\array_key_exists($output, $outputs)) ? $outputs[$output] : $outputs['jpg'])
                ->addHeader('Expires', $date)
                ->addHeader('X-Appwrite-Cache', 'hit')
                ->send($data)
            ;
        }

        $source = $device->read($path);

        if (!empty($cipher)) { // Decrypt
            $source = OpenSSL::decrypt(
                $source,
                $file->getAttribute('openSSLCipher'),
                App::getEnv('_APP_OPENSSL_KEY_V'.$file->getAttribute('openSSLVersion')),
                0,
                \hex2bin($file->getAttribute('openSSLIV')),
                \hex2bin($file->getAttribute('openSSLTag'))
            );
        }

        if (!empty($algorithm)) {
            $source = $compressor->decompress($source);
        }

        $image = new Image($source);

        $image->crop((int) $width, (int) $height, $gravity);
        
        if (!empty($opacity) || $opacity==0) {
            $image->setOpacity($opacity);
        }

        if (!empty($background)) {
            $image->setBackground('#'.$background);
        }

        
        if (!empty($borderWidth) ) {
            $image->setBorder($borderWidth, '#'.$borderColor);
        }

        if (!empty($borderRadius)) {
            $image->setBorderRadius($borderRadius);
        }

        if (!empty($rotation)) {
            $image->setRotation($rotation);
        }

        $output = (empty($output)) ? $type : $output;

        $data = $image->output($output, $quality);

        $cache->save($key, $data);

        $usage
            ->setParam('storage.files.read', 1)
            ->setParam('bucketId', 'default')
        ;

        $response
            ->setContentType($outputs[$output])
            ->addHeader('Expires', $date)
            ->addHeader('X-Appwrite-Cache', 'miss')
            ->send($data)
        ;

        unset($image);
    });

App::get('/v1/storage/files/:fileId/download')
    ->desc('Get File for Download')
    ->groups(['api', 'storage'])
    ->label('scope', 'files.read')
    ->label('sdk.auth', [APP_AUTH_TYPE_SESSION, APP_AUTH_TYPE_KEY, APP_AUTH_TYPE_JWT])
    ->label('sdk.namespace', 'storage')
    ->label('sdk.method', 'getFileDownload')
    ->label('sdk.description', '/docs/references/storage/get-file-download.md')
    ->label('sdk.response.code', Response::STATUS_CODE_OK)
    ->label('sdk.response.type', '*/*')
    ->label('sdk.methodType', 'location')
    ->param('fileId', '', new UID(), 'File unique ID.')
    ->inject('response')
    ->inject('dbForInternal')
    ->inject('usage')
    ->action(function ($fileId, $response, $dbForInternal, $usage) {
        /** @var Appwrite\Utopia\Response $response */
        /** @var Utopia\Database\Database $dbForInternal */
        /** @var Appwrite\Stats\Stats $usage */

        $file = $dbForInternal->getDocument('files', $fileId);

        if (empty($file->getId())) {
            throw new Exception('File not found', 404);
        }

        $path = $file->getAttribute('path', '');

        if (!\file_exists($path)) {
            throw new Exception('File not found in '.$path, 404);
        }

        $compressor = new GZIP();
        $device = Storage::getDevice('files');

        $source = $device->read($path);

        if (!empty($file->getAttribute('openSSLCipher'))) { // Decrypt
            $source = OpenSSL::decrypt(
                $source,
                $file->getAttribute('openSSLCipher'),
                App::getEnv('_APP_OPENSSL_KEY_V'.$file->getAttribute('openSSLVersion')),
                0,
                \hex2bin($file->getAttribute('openSSLIV')),
                \hex2bin($file->getAttribute('openSSLTag'))
            );
        }

        $source = $compressor->decompress($source);

        $usage
            ->setParam('storage.files.read', 1)
            ->setParam('bucketId', 'default')
        ;

        // Response
        $response
            ->setContentType($file->getAttribute('mimeType'))
            ->addHeader('Content-Disposition', 'attachment; filename="'.$file->getAttribute('name', '').'"')
            ->addHeader('Expires', \date('D, d M Y H:i:s', \time() + (60 * 60 * 24 * 45)).' GMT') // 45 days cache
            ->addHeader('X-Peak', \memory_get_peak_usage())
            ->send($source)
        ;
    });

App::get('/v1/storage/files/:fileId/view')
    ->desc('Get File for View')
    ->groups(['api', 'storage'])
    ->label('scope', 'files.read')
    ->label('sdk.auth', [APP_AUTH_TYPE_SESSION, APP_AUTH_TYPE_KEY, APP_AUTH_TYPE_JWT])
    ->label('sdk.namespace', 'storage')
    ->label('sdk.method', 'getFileView')
    ->label('sdk.description', '/docs/references/storage/get-file-view.md')
    ->label('sdk.response.code', Response::STATUS_CODE_OK)
    ->label('sdk.response.type', '*/*')
    ->label('sdk.methodType', 'location')
    ->param('fileId', '', new UID(), 'File unique ID.')
    ->inject('response')
    ->inject('dbForInternal')
    ->inject('usage')
    ->action(function ($fileId, $response, $dbForInternal, $usage) {
        /** @var Appwrite\Utopia\Response $response */
        /** @var Utopia\Database\Database $dbForInternal */
        /** @var Appwrite\Stats\Stats $usage */

        $file  = $dbForInternal->getDocument('files', $fileId);
        $mimes = Config::getParam('storage-mimes');

        if (empty($file->getId())) {
            throw new Exception('File not found', 404);
        }

        $path = $file->getAttribute('path', '');

        if (!\file_exists($path)) {
            throw new Exception('File not found in '.$path, 404);
        }

        $compressor = new GZIP();
        $device = Storage::getDevice('files');

        $contentType = 'text/plain';

        if (\in_array($file->getAttribute('mimeType'), $mimes)) {
            $contentType = $file->getAttribute('mimeType');
        }

        $source = $device->read($path);

        if (!empty($file->getAttribute('openSSLCipher'))) { // Decrypt
            $source = OpenSSL::decrypt(
                $source,
                $file->getAttribute('openSSLCipher'),
                App::getEnv('_APP_OPENSSL_KEY_V'.$file->getAttribute('openSSLVersion')),
                0,
                \hex2bin($file->getAttribute('openSSLIV')),
                \hex2bin($file->getAttribute('openSSLTag'))
            );
        }

        $output = $compressor->decompress($source);
        $fileName = $file->getAttribute('name', '');

        $usage
            ->setParam('storage.files.read', 1)
            ->setParam('bucketId', 'default')
        ;

        // Response
        $response
            ->setContentType($contentType)
            ->addHeader('Content-Security-Policy', 'script-src none;')
            ->addHeader('X-Content-Type-Options', 'nosniff')
            ->addHeader('Content-Disposition', 'inline; filename="'.$fileName.'"')
            ->addHeader('Expires', \date('D, d M Y H:i:s', \time() + (60 * 60 * 24 * 45)).' GMT') // 45 days cache
            ->addHeader('X-Peak', \memory_get_peak_usage())
            ->send($output)
        ;
    });

App::put('/v1/storage/files/:fileId')
    ->desc('Update File')
    ->groups(['api', 'storage'])
    ->label('scope', 'files.write')
    ->label('event', 'storage.files.update')
    ->label('sdk.auth', [APP_AUTH_TYPE_SESSION, APP_AUTH_TYPE_KEY, APP_AUTH_TYPE_JWT])
    ->label('sdk.namespace', 'storage')
    ->label('sdk.method', 'updateFile')
    ->label('sdk.description', '/docs/references/storage/update-file.md')
    ->label('sdk.response.code', Response::STATUS_CODE_OK)
    ->label('sdk.response.type', Response::CONTENT_TYPE_JSON)
    ->label('sdk.response.model', Response::MODEL_FILE)
    ->param('fileId', '', new UID(), 'File unique ID.')
    ->param('read', [], new ArrayList(new Text(64)), 'An array of strings with read permissions. By default no user is granted with any read permissions. [learn more about permissions](/docs/permissions) and get a full list of available permissions.')
    ->param('write', [], new ArrayList(new Text(64)), 'An array of strings with write permissions. By default no user is granted with any write permissions. [learn more about permissions](/docs/permissions) and get a full list of available permissions.')
    ->inject('response')
    ->inject('dbForInternal')
    ->inject('audits')
    ->inject('usage')
    ->action(function ($fileId, $read, $write, $response, $dbForInternal, $audits, $usage) {
        /** @var Appwrite\Utopia\Response $response */
        /** @var Utopia\Database\Database $dbForInternal */
        /** @var Appwrite\Event\Event $audits */

        $file = $dbForInternal->getDocument('files', $fileId);

        if (empty($file->getId())) {
            throw new Exception('File not found', 404);
        }

        $file = $dbForInternal->updateDocument('files', $fileId, new Document(\array_merge($file->getArrayCopy(), [
            '$read' => $read,
            '$write' => $write,
            'bucketId' => '',
        ])));

        $audits
            ->setParam('event', 'storage.files.update')
            ->setParam('resource', 'file/'.$file->getId())
        ;

        $usage
            ->setParam('storage.files.update', 1)
            ->setParam('bucketId', 'default')
        ;

        $response->dynamic($file, Response::MODEL_FILE);
    });

App::delete('/v1/storage/files/:fileId')
    ->desc('Delete File')
    ->groups(['api', 'storage'])
    ->label('scope', 'files.write')
    ->label('event', 'storage.files.delete')
    ->label('sdk.auth', [APP_AUTH_TYPE_SESSION, APP_AUTH_TYPE_KEY, APP_AUTH_TYPE_JWT])
    ->label('sdk.namespace', 'storage')
    ->label('sdk.method', 'deleteFile')
    ->label('sdk.description', '/docs/references/storage/delete-file.md')
    ->label('sdk.response.code', Response::STATUS_CODE_NOCONTENT)
    ->label('sdk.response.model', Response::MODEL_NONE)
    ->param('fileId', '', new UID(), 'File unique ID.')
    ->inject('response')
    ->inject('dbForInternal')
    ->inject('events')
    ->inject('audits')
    ->inject('usage')
    ->action(function ($fileId, $response, $dbForInternal, $events, $audits, $usage) {
        /** @var Appwrite\Utopia\Response $response */
        /** @var Utopia\Database\Database $dbForInternal */
        /** @var Appwrite\Event\Event $events */
        /** @var Appwrite\Event\Event $audits */
        /** @var Appwrite\Stats\Stats $usage */
        
        $file = $dbForInternal->getDocument('files', $fileId);

        if (empty($file->getId())) {
            throw new Exception('File not found', 404);
        }

        $device = Storage::getDevice('files');

        if ($device->delete($file->getAttribute('path', ''))) {
            if (!$dbForInternal->deleteDocument('files', $fileId)) {
                throw new Exception('Failed to remove file from DB', 500);
            }
        }
        
        $audits
            ->setParam('event', 'storage.files.delete')
            ->setParam('resource', 'file/'.$file->getId())
        ;

        $usage
            ->setParam('storage', $file->getAttribute('size', 0) * -1)
            ->setParam('storage.files.delete', 1)
            ->setParam('bucketId', 'default')
        ;

        $events
            ->setParam('eventData', $response->output($file, Response::MODEL_FILE))
        ;

        $response->noContent();
    });

App::get('/v1/storage/usage')
    ->desc('Get usage stats for storage')
    ->groups(['api', 'storage'])
    ->label('scope', 'files.read')
    ->label('sdk.auth', [APP_AUTH_TYPE_ADMIN])
    ->label('sdk.namespace', 'storage')
    ->label('sdk.method', 'getUsage')
    ->label('sdk.response.code', Response::STATUS_CODE_OK)
    ->label('sdk.response.type', Response::CONTENT_TYPE_JSON)
    ->label('sdk.response.model', Response::MODEL_USAGE_STORAGE)
    ->param('range', '30d', new WhiteList(['24h', '7d', '30d', '90d'], true), 'Date range.', true)
    ->inject('response')
    ->inject('dbForInternal')
    ->action(function ($range, $response, $dbForInternal) {
        /** @var Appwrite\Utopia\Response $response */
        /** @var Utopia\Database\Database $dbForInternal */

        $usage = [];
        if (App::getEnv('_APP_USAGE_STATS', 'enabled') == 'enabled') {
            $period = [
                '24h' => [
                    'period' => '30m',
                    'limit' => 48,
                ],
                '7d' => [
                    'period' => '1d',
                    'limit' => 7,
                ],
                '30d' => [
                    'period' => '1d',
                    'limit' => 30,
                ],
                '90d' => [
                    'period' => '1d',
                    'limit' => 90,
                ],
            ];

            $metrics = [
                "storage.total",
                "storage.files.count"
            ];

            $stats = [];

            Authorization::skip(function() use ($dbForInternal, $period, $range, $metrics, &$stats) {
                foreach ($metrics as $metric) {
                    $requestDocs = $dbForInternal->find('stats', [
                        new Query('period', Query::TYPE_EQUAL, [$period[$range]['period']]),
                        new Query('metric', Query::TYPE_EQUAL, [$metric]),
                    ], $period[$range]['limit'], 0, ['time'], [Database::ORDER_DESC]);
    
                    $stats[$metric] = [];
                    foreach ($requestDocs as $requestDoc) {
                        $stats[$metric][] = [
                            'value' => $requestDoc->getAttribute('value'),
                            'date' => $requestDoc->getAttribute('time'),
                        ];
                    }
                    $stats[$metric] = array_reverse($stats[$metric]);
                }    
            });

            $usage = new Document([
                'range' => $range,
                'storage' => $stats['storage.total'],
                'files' => $stats['storage.files.count']
            ]);
        }

        $response->dynamic($usage, Response::MODEL_USAGE_STORAGE);
    });

App::get('/v1/storage/:bucketId/usage')
    ->desc('Get usage stats for a storage bucket')
    ->groups(['api', 'storage'])
    ->label('scope', 'files.read')
    ->label('sdk.auth', [APP_AUTH_TYPE_ADMIN])
    ->label('sdk.namespace', 'storage')
    ->label('sdk.method', 'getBucketUsage')
    ->label('sdk.response.code', Response::STATUS_CODE_OK)
    ->label('sdk.response.type', Response::CONTENT_TYPE_JSON)
    ->label('sdk.response.model', Response::MODEL_USAGE_BUCKETS)
    ->param('bucketId', '', new UID(), 'Bucket unique ID.')
    ->param('range', '30d', new WhiteList(['24h', '7d', '30d', '90d'], true), 'Date range.', true)
    ->inject('response')
    ->inject('dbForInternal')
    ->action(function ($bucketId, $range, $response, $dbForInternal) {
        /** @var Appwrite\Utopia\Response $response */
        /** @var Utopia\Database\Database $dbForInternal */

        // TODO: Check if the storage bucket exists else throw 404 
        
        $usage = [];
        if (App::getEnv('_APP_USAGE_STATS', 'enabled') == 'enabled') {
            $period = [
                '24h' => [
                    'period' => '30m',
                    'limit' => 48,
                ],
                '7d' => [
                    'period' => '1d',
                    'limit' => 7,
                ],
                '30d' => [
                    'period' => '1d',
                    'limit' => 30,
                ],
                '90d' => [
                    'period' => '1d',
                    'limit' => 90,
                ],
            ];

            $metrics = [
                "storage.buckets.$bucketId.files.count",
                "storage.buckets.$bucketId.files.create",
                "storage.buckets.$bucketId.files.read",
                "storage.buckets.$bucketId.files.update",
                "storage.buckets.$bucketId.files.delete"
            ];

            $stats = [];

            Authorization::skip(function() use ($dbForInternal, $period, $range, $metrics, &$stats) {
                foreach ($metrics as $metric) {
                    $requestDocs = $dbForInternal->find('stats', [
                        new Query('period', Query::TYPE_EQUAL, [$period[$range]['period']]),
                        new Query('metric', Query::TYPE_EQUAL, [$metric]),
                    ], $period[$range]['limit'], 0, ['time'], [Database::ORDER_DESC]);
    
                    $stats[$metric] = [];
                    foreach ($requestDocs as $requestDoc) {
                        $stats[$metric][] = [
                            'value' => $requestDoc->getAttribute('value'),
                            'date' => $requestDoc->getAttribute('time'),
                        ];
                    }
                    $stats[$metric] = array_reverse($stats[$metric]);
                }    
            });

            $usage = new Document([
                'range' => $range,
                'files.count' => $stats["storage.buckets.$bucketId.files.count"],
                'files.create' => $stats["storage.buckets.$bucketId.files.create"],
                'files.read' => $stats["storage.buckets.$bucketId.files.read"],
                'files.update' => $stats["storage.buckets.$bucketId.files.update"],
                'files.delete' => $stats["storage.buckets.$bucketId.files.delete"]
            ]);
        }

        $response->dynamic($usage, Response::MODEL_USAGE_BUCKETS);
    });