Whooshkaa + Amazon Polly：结合阅读与收听，拓宽发布渠道

createAFLFeeds:
 handler: api.createAFLFeeds
 events:
   - schedule:
       rate: rate(2 minutes)
       enabled: ${self:custom.${opt:stage}.ScheduledEvents}

createAFLFeeds() {
    return new Promise((resolve, reject) => {
      this.fetchAFLTeams().then(result => {
        for (const team of result) {
          this.createAFLFeedByTeamID(team['id']);
        }
      }, error => {
        console.log(error);
        reject(error);
      });
      resolve({message: "success"});
    });
}

public function team(string $id)
{
    if (!$team = Team::findById($id)) {
        $this->response->errorNotFound('Invalid team ID.');
    }

    if ($team->isPlayingOrHasRecentlyPlayed()) {
        $story = $team->match;
    } else {
        $story = $team->news;
    }

    $this->publisher->setTeamId($id);
    $this->publisher->setStory($story->getStory());

    $hash = Hash::make($story, $this->publisher->getRemoteStorageAdapter());
    if ($hasBeenUpdated = $hash->hasBeenUpdated()) {
        $fileName = $this->publisher->getFileName();

        $audio = $this->makeAudio($story);
        $this->publisher->store($fileName, $audio->getContent());

        $feed = $this->makeFeed($team, $story);
        $this->publisher->store('feed.xml', $feed->getContent());

        $this->publisher->moveToCloud([$fileName, 'feed.xml']);
        $this->publisher->cleanUp();

        $hash->store();
    }

    return response([
        'rss' => $this->publisher->getRemoteUrl('feed.xml'),
        'updated' => $hasBeenUpdated,
    ]);
}

private function makeAudio($story)
{
   $polly = new Polly;
   $polly->setPhonemes(['live' => 'laɪve']);
   $polly->setProsody('AFL', ['rate' => 'fast']);
   $polly->setSayAs(['MCG' => 'spell-out']);

   $text = $story->getStory();
   // Trim the text to a maximum of 1500 characters.
   if (strlen($text) > 1499) {
       $text = $this->text->setText($text)->trimToWordBoundary(1499);
   }

   try {
       $audioStream = $polly->fetchAudioStream($text);
   }
   catch (\Exception $e) {
       $this->response->error($e->getMessage(), $e->getStatusCode());
   }

   return response()->make($audioStream)->header('Content-Type', 'audio/mpeg');
}

private function makeFeed(Team $team, $story)
{
   $feed = new Feed($this->publisher->getRemoteURL('feed.xml'));
   $feed->setTitle($team->getName() . "'s Official Live Feed");
   $feed->setDescription('An official live feed from the Australian Football League.');
   $feed->setLink('http://www.afl.com.au');
   $feed->setOwner('The Australian Football League', 'podcast@afl.com.au');
   $feed->setImage($team->getImage());
   $feed->appendElements([
       'itunes:subtitle' => "Follow {$team->getName()}'s Live Matches and Latest News",
       'itunes:explicit' => 'no',
       'language' => 'en-us',
       'lastBuildDate' => Carbon::now('UTC')->toRssString(),
       'ttl' => 2,
       'copyright' => 'The Australian Football League',
   ]);

   $feed->setCategories([
       'Sports & Recreation' => [
           'Professional',
       ]
   ]);

   $fileName = $this->publisher->getFileName();
   $metaData = $this->getMetaData($fileName);

   $item = $feed->addItem([
       'title' => $story->getTitle(),
       'link' => $story->getArticleURL(),
       'pubDate' => Carbon::now('UTC')->toRssString(),
       'itunes:duration' => $metaData['playtime_string'],
   ]);
   $item->appendDescription($story->getStory());
   $item->appendEnclosure($this->publisher->getRemoteUrl($fileName, true), $metaData['filesize'], $metaData['mime_type']);
   $item->append('itunes:image', null, ['href' => $team->getImage()]);
   $item->append('guid', $this->publisher->getGuid(), ['isPermaLink' => 'false']);

   return response()->make($feed->output())->header('Content-Type', 'text/xml');
}

createDailyNewsStory:
 handler: api.createDailyNewsStory
 events:
   - schedule:
       rate: cron(0 2,6,10,22 * * ? *)
       enabled: ${self:custom.${opt:stage}.ScheduledEvents}
   - schedule:
       rate: cron(30 14 * * ? *)
       enabled: ${self:custom.${opt:stage}.ScheduledEvents}

createDailyNewsStory() {
 const options = {
   hostname: this.commonOptions.hostname,
   port: this.commonOptions.port,
   path: '/news-corp/daily-news',
   method: 'POST',
 };
 return new Promise((resolve, reject) => {
   this.sendRequest(options).then(result => {
     return resolve(result);
   }, error => {
     console.log(error);
     return reject('Could not create "Daily News" story.');
   });
 });
}

public function dailyNews()
{
   $show = Show::find(DailyNewsStory::SHOW_ID);
   $storyBuilder = new StoryBuilder($show);

   $dateTime = Carbon::now('Australia/Sydney')->format('F j (g:00 a)');
   $title = $show->title . ' - ' . $dateTime;

   $story = new DailyNewsStory;
   $story->setLimit(10);
   $story->setTitle($title);
   $story->setDescription($title);

   $episode = $storyBuilder->fetch($story)->publish();

   return $this->response->item($episode, new EpisodesTransformer);
}

public function publish()
{
   $title = $this->story->getTitle();
   $description = $this->story->getDescription();

   if (!$episode = $this->episodes->findByTitleAndDescription($title, $description)) {
       $audio = $this->makeAudio();
       $fileName = $this->storage->putContent($audio->content(), Polly::OUTPUT_FORMAT);

       $data = [
           'podcast_id' => $this->show->id,
           'title' => $title,
           'description' => $description,
           'media_file' => $fileName,
           'length' => $this->storage->getSize($fileName),
       ];

       $episode = $this->episodes->create($data);
   }

   return $episode;
}

public function makeAudio()
{
   $polly = new Polly;

   $audioStream = null;
   foreach ($this->story->getBody() as $body) {
       $audioStream .= $polly->makeAudioStream($body);
   }

   return $polly->makeAudioResponse($audioStream);
}