feat tts clear cache (#175)

* feat tts clear cache

* feat tts clear cache

test/index.js

@@ -23,4 +23,5 @@ require('./system-information');
 require('./lcr-carriers-set-entries');
 require('./lcr-routes');
 require('./lcrs');
+require('./tts-cache');
 require('./docker_stop');

test/tts-cache.js

@@ -0,0 +1,56 @@
+const test = require('tape') ;
+const jwt = require('jsonwebtoken');
+const ADMIN_TOKEN = '38700987-c7a4-4685-a5bb-af378f9734de';
+const authAdmin = {bearer: ADMIN_TOKEN};
+const request = require('request-promise-native').defaults({
+  baseUrl: 'http://127.0.0.1:3000/v1'
+});
+const crypto = require('crypto');
+const logger = require('../lib/logger');
+
+const {
+  client,
+} = require('@jambonz/speech-utils')({
+  host: process.env.JAMBONES_REDIS_HOST,
+  port: process.env.JAMBONES_REDIS_PORT || 6379
+}, logger);
+
+function makeSynthKey({account_sid = '', vendor, language, voice, engine = '', text}) {
+  const hash = crypto.createHash('sha1');
+  hash.update(`${language}:${vendor}:${voice}:${engine}:${text}`);
+  return `tts${account_sid ? (':' + account_sid) : ''}:${hash.digest('hex')}`;
+}
+
+test('tts-cache', async(t) => {
+  const app = require('../app');
+  try {
+    // create caches
+    const minRecords = 8;
+    for (const i in Array(minRecords).fill(0)) {
+      await client.set(makeSynthKey({vendor: i, language: i, voice: i, engine: i, text: i}), i);
+    }
+
+    let result = await request.get('/TtsCache', {
+      auth: authAdmin,
+      json: true,
+    });
+
+    t.ok(result.size === minRecords, 'get cache correctly');
+
+    result = await request.delete('/TtsCache', {
+      auth: authAdmin,
+      resolveWithFullResponse: true,
+    });
+    t.ok(result.statusCode === 204, 'successfully deleted application after removing phone number');
+
+    result = await request.get('/TtsCache', {
+      auth: authAdmin,
+      json: true,
+    });
+
+    t.ok(result.size === 0, 'deleted cache successfully');
+  } catch(err) {
+    console.error(err);
+    t.end(err);
+  }
+});