Added Cache file for tmdb queries and controller check the cache and returns it if hit. This is to limit our request to a third party library.

seasoned_api/src/tmdb/cache.js

@@ -0,0 +1,44 @@
+const assert = require('assert');
+const establishedDatabase = require('src/database/database');
+
+class Cache {
+	constructor(database) {
+		this.database = database || establishedDatabase
+		this.queries = {
+		'read': 'SELECT value, time_to_live, created_at, DATETIME("now", "localtime") as now, ' +
+			'DATETIME(created_at, "+" || time_to_live || " seconds") as expires ' + 
+			'FROM cache WHERE key = ? AND now < expires',
+		'create': 'INSERT OR REPLACE INTO cache (key, value, time_to_live) VALUES (?, ?, ?)',
+		};
+	}
+
+	/**
+	 * Retrieve an unexpired cache entry by key.
+	 * @param {String} key of the cache entry
+	 * @returns {Object}
+	 */
+	 get(key) {
+	 	return Promise.resolve()
+	 	.then(() => this.database.get(this.queries.read, [key]))
+	 	.then((row) => {
+	 		assert(row, 'Could not find cache enrty with that key.');
+	 		return JSON.parse(row.value);
+	 	})
+	 }
+
+	/**
+	 * Insert cache entry with key and value.
+	 * @param {String} key of the cache entry
+	 * @param {String} value of the cache entry
+	 * @param {Number} timeToLive the number of seconds before entry expires
+	 * @returns {Object}
+	 */
+	 set(key, value, timeToLive = 60) {
+	 	const json = JSON.stringify(value);
+	 	return Promise.resolve()
+	 	.then(() => this.database.run(this.queries.create, [key, json, timeToLive]))
+	 	.then(() => value);
+	 }
+}
+
+module.exports = Cache;

seasoned_api/src/webserver/controllers/tmdb/searchMedia.js

@@ -1,6 +1,10 @@
+const SearchHistory = require('src/searchHistory/searchHistory');
 const configuration = require('src/config/configuration').getInstance();
+const Cache = require('src/tmdb/cache');
 const TMDB = require('src/tmdb/tmdb');
-const tmdb = new TMDB(configuration.get('tmdb', 'apiKey'));
+const cache = new Cache();
+const tmdb = new TMDB(cache, configuration.get('tmdb', 'apiKey'));
+const searchHistory = new SearchHistory();
 
 /**
  * Controller: Search for movies by query, page and optionally adult
@@ -8,10 +12,17 @@ const tmdb = new TMDB(configuration.get('tmdb', 'apiKey'));
  * @param {Response} res
  * @returns {Callback}
  */
-function searchMoviesController(req, res) {
+function searchMediaController(req, res) {
+  const user = req.loggedInUser;
   const { query, page, type } = req.query;
 
   Promise.resolve()
+  .then(() => {
+    if (user) {
+      return searchHistory.create(user, query);
+    }
+    return null;
+  }
   .then(() => tmdb.search(query, page, type))
   .then((movies) => {
   	if (movies !== undefined || movies.length > 0) {
@@ -19,11 +30,10 @@ function searchMoviesController(req, res) {
   	} else {
   		res.status(404).send({ success: false, error: 'Search query did not return any results.'})
   	}
-    res.send(movies);
   })
   .catch((error) => {
     res.status(500).send({ success: false, error: error.message });
   });
 }
 
-module.exports = searchMoviesController;
+module.exports = searchMediaController;