Added a sample code to show auto punctuation (#57)

* Added a sample code to show auto punctuation

* Ran prettier

speech/recognize.v1p1beta1.js

@@ -132,6 +132,58 @@ function syncRecognizeModelSelectionGCS(
   // [END speech_transcribe_model_selection_gcs]
 }
 
+function syncRecognizeWithAutoPunctuation(
+  filename,
+  encoding,
+  sampleRateHertz,
+  languageCode
+) {
+  // [START speech_transcribe_file_with_auto_punctuation]
+  // Imports the Google Cloud client library
+  const fs = require('fs');
+  const speech = require('@google-cloud/speech');
+
+  // Creates a client
+  const client = new speech.SpeechClient();
+
+  /**
+   * TODO(developer): Uncomment the following lines before running the sample.
+   */
+  // const filename = 'Local path to audio file, e.g. /path/to/audio.raw';
+  // const encoding = 'Encoding of the audio file, e.g. LINEAR16';
+  // const sampleRateHertz = 16000;
+  // const languageCode = 'BCP-47 language code, e.g. en-US';
+
+  const config = {
+    encoding: encoding,
+    languageCode: languageCode,
+    enableAutomaticPunctuation: true,
+  };
+  const audio = {
+    content: fs.readFileSync(filename).toString('base64'),
+  };
+
+  const request = {
+    config: config,
+    audio: audio,
+  };
+
+  // Detects speech in the audio file
+  client
+    .recognize(request)
+    .then(data => {
+      const response = data[0];
+      const transcription = response.results
+        .map(result => result.alternatives[0].transcript)
+        .join('\n');
+      console.log(`Transcription: `, transcription);
+    })
+    .catch(err => {
+      console.error('ERROR:', err);
+    });
+  // [END speech_transcribe_file_with_auto_punctuation]
+}
+
 require(`yargs`)
   .demand(1)
   .command(
@@ -160,6 +212,18 @@ require(`yargs`)
         opts.languageCode
       )
   )
+  .command(
+    `sync-auto-punctuation <filename>`,
+    `Detects speech in a local audio file with auto punctuation.`,
+    {},
+    opts =>
+      syncRecognizeWithAutoPunctuation(
+        opts.filename,
+        opts.encoding,
+        opts.sampleRateHertz,
+        opts.languageCode
+      )
+  )
   .options({
     encoding: {
       alias: 'e',
@@ -189,6 +253,7 @@ require(`yargs`)
   .example(
     `node $0 sync-model-gcs gs://gcs-test-data/Google_Gnome.wav phone_call -e FLAC -r 16000`
   )
+  .example(`node $0 sync-auto-punctuation ./resources/commercial_mono.wav`)
   .wrap(120)
   .recommendCommands()
   .epilogue(`For more information, see https://cloud.google.com/speech/docs`)

speech/system-test/recognize.v1p1beta1.test.js

@@ -25,13 +25,16 @@ const {runAsync} = require(`@google-cloud/nodejs-repo-tools`);
 const bucketName = `nodejs-docs-samples-test-${uuid.v4()}`;
 const cmd = `node recognize.v1p1beta1.js`;
 const cwd = path.join(__dirname, `..`);
-const filename = `Google_Gnome.wav`;
-const filepath = path.join(__dirname, `../resources/${filename}`);
-const text = `the weather outside is sunny`;
+const filename1 = `Google_Gnome.wav`;
+const filename2 = `commercial_mono.wav`;
+const filepath1 = path.join(__dirname, `../resources/${filename1}`);
+const filepath2 = path.join(__dirname, `../resources/${filename2}`);
+const text1 = `the weather outside is sunny`;
+const text2 = `Terrific. It's on the way.`;
 
 test.before(async () => {
   const [bucket] = await storage.createBucket(bucketName);
-  await bucket.upload(filepath);
+  await bucket.upload(filepath1);
 });
 
 test.after.always(async () => {
@@ -43,17 +46,25 @@ test.after.always(async () => {
 
 test(`should run sync recognize with model selection`, async t => {
   const model = `video`;
-  const output = await runAsync(`${cmd} sync-model ${filepath} ${model}`, cwd);
+  const output = await runAsync(`${cmd} sync-model ${filepath1} ${model}`, cwd);
   t.true(output.includes(`Transcription:`));
-  t.true(output.includes(text));
+  t.true(output.includes(text1));
 });
 
 test(`should run sync recognize on a GCS file with model selection`, async t => {
   const model = `video`;
   const output = await runAsync(
-    `${cmd} sync-model-gcs gs://${bucketName}/${filename} ${model}`,
+    `${cmd} sync-model-gcs gs://${bucketName}/${filename1} ${model}`,
     cwd
   );
   t.true(output.includes(`Transcription:`));
-  t.true(output.includes(text));
+  t.true(output.includes(text1));
+});
+
+test(`should run sync recognize with auto punctuation`, async t => {
+  const output = await runAsync(
+    `${cmd} sync-auto-punctuation ${filepath2}`,
+    cwd
+  );
+  t.true(output.includes(text2));
 });