const {Storage} = require('@google-cloud/storage');const storage = newStorage();const myBucket = storage.bucket('my-bucket');const file = myBucket.file('my-file');

//-// <h4>Downloading a File</h4>//// The example below demonstrates how we can reference a remote file, then// pipe its contents to a local file. This is effectively creating a local// backup of your remote data.//-const {Storage} = require('@google-cloud/storage');const storage = newStorage();const bucket = storage.bucket('my-bucket');const fs = require('fs');const remoteFile = bucket.file('image.png');const localFilename = '/Users/stephen/Photos/image.png';remoteFile.createReadStream()  .on('error', function(err) {})  .on('response', function(response) {    // Server connected and responded with the specified status and headers.   })  .on('end', function() {    // The file is fully downloaded.  })  .pipe(fs.createWriteStream(localFilename));//-// To limit the downloaded data to only a byte range, pass an options// object.//-const logFile = myBucket.file('access_log');logFile.createReadStream({    start: 10000,    end: 20000  })  .on('error', function(err) {})  .pipe(fs.createWriteStream('/Users/stephen/logfile.txt'));//-// To read a tail byte range, specify only `options.end` as a negative// number.//-const logFile = myBucket.file('access_log');logFile.createReadStream({    end: -100  })  .on('error', function(err) {})  .pipe(fs.createWriteStream('/Users/stephen/logfile.txt'));

const fs = require('fs');const {Storage} = require('@google-cloud/storage');const storage = newStorage();const myBucket = storage.bucket('my-bucket');const file = myBucket.file('my-file');//-// <h4>Uploading a File</h4>//// Now, consider a case where we want to upload a file to your bucket. You// have the option of using {@link Bucket#upload}, but that is just// a convenience method which will do the following.//-fs.createReadStream('/Users/stephen/Photos/birthday-at-the-zoo/panda.jpg')  .pipe(file.createWriteStream())  .on('error', function(err) {})  .on('finish', function() {    // The file upload is complete.  });//-// <h4>Uploading a File with gzip compression</h4>//-fs.createReadStream('/Users/stephen/site/index.html')  .pipe(file.createWriteStream({ gzip: true }))  .on('error', function(err) {})  .on('finish', function() {    // The file upload is complete.  });//-// Downloading the file with `createReadStream` will automatically decode// the file.//-//-// <h4>Uploading a File with Metadata</h4>//// One last case you may run into is when you want to upload a file to your// bucket and set its metadata at the same time. Like above, you can use// {@link Bucket#upload} to do this, which is just a wrapper around// the following.//-fs.createReadStream('/Users/stephen/Photos/birthday-at-the-zoo/panda.jpg')  .pipe(file.createWriteStream({    metadata: {      contentType: 'image/jpeg',      metadata: {        custom: 'metadata'      }    }  }))  .on('error', function(err) {})  .on('finish', function() {    // The file upload is complete.  });

const {Storage} = require('@google-cloud/storage');const storage = newStorage();const myBucket = storage.bucket('my-bucket');const file = myBucket.file('my-file', { generation: 0 });const contents = 'This is the contents of the file.';file.save(contents, function(err) {  if (err) {    file.deleteResumableCache();  }});

const {Storage} = require('@google-cloud/storage');const storage = newStorage();const bucket = storage.bucket('albums');const file = bucket.file('my-file');// publicUrl will be "https://storage.googleapis.com/albums/my-file"const publicUrl = file.publicUrl();

const crypto = require('crypto');const {Storage} = require('@google-cloud/storage');const storage = newStorage();const myBucket = storage.bucket('my-bucket');const encryptionKey = crypto.randomBytes(32);const fileWithCustomEncryption = myBucket.file('my-file');fileWithCustomEncryption.setEncryptionKey(encryptionKey);const fileWithoutCustomEncryption = myBucket.file('my-file');fileWithCustomEncryption.save('data', function(err) {  // Try to download with the File object that hasn't had  // `setEncryptionKey()` called:  fileWithoutCustomEncryption.download(function(err) {    // We will receive an error:    //   err.message === 'Bad Request'    // Try again with the File object we called `setEncryptionKey()` on:    fileWithCustomEncryption.download(function(err, contents) {      // contents.toString() === 'data'    });  });});

  /**   * TODO(developer): Uncomment the following lines before running the sample.   */  // The ID of your GCS bucket  // const bucketName = 'your-unique-bucket-name';  // The path to your file to upload  // const filePath = 'path/to/your/file';  // The new ID for your GCS file  // const destFileName = 'your-new-file-name';  // The key to encrypt the object with  // const key = 'TIbv/fjexq+VmtXzAlc63J4z5kFmWJ6NdAPQulQBT7g=';  // Imports the Google Cloud client library  const {Storage} = require('@google-cloud/storage');  // Creates a client  const storage = newStorage();  async function uploadEncryptedFile() {    const options = {      destination: destFileName,      encryptionKey: Buffer.from(key, 'base64'),    };    await storage.bucket(bucketName).upload(filePath, options);    console.log(      `File ${filePath} uploaded to gs://${bucketName}/${destFileName}`    );  }  uploadEncryptedFile().catch(console.error);

  /**   * TODO(developer): Uncomment the following lines before running the sample.   */  // The ID of your GCS bucket  // const bucketName = 'your-unique-bucket-name';  // The ID of your GCS file  // const srcFileName = 'your-file-name';  // The path to which the file should be downloaded  // const destFileName = '/local/path/to/file.txt';  // The Base64 encoded decryption key, which should be the same key originally  // used to encrypt the file  // const encryptionKey = 'TIbv/fjexq+VmtXzAlc63J4z5kFmWJ6NdAPQulQBT7g=';  // Imports the Google Cloud client library  const {Storage} = require('@google-cloud/storage');  // Creates a client  const storage = newStorage();  async function downloadEncryptedFile() {    const options = {      destination: destFileName,    };    // Descrypts and downloads the file. This can only be done with the key used    // to encrypt and upload the file.    await storage      .bucket(bucketName)      .file(srcFileName)      .setEncryptionKey(Buffer.from(encryptionKey, 'base64'))      .download(options);    console.log(`File ${srcFileName} downloaded to ${destFileName}`);  }  downloadEncryptedFile().catch(console.error);

const {Storage} = require('@google-cloud/storage');const storage = newStorage();const bucket = storage.bucket('albums');const file = bucket.file('my-file');file.setUserProject('grape-spaceship-123');