update constructor, add option validation tests

src/index.js

@@ -1,12 +1,38 @@
-class User {
-  constructor(firstName, lastName) {
-    this.firstName = firstName;
-    this.lastName = lastName;
-  }
+import events from 'events';
+import Joi from 'joi';
 
-  getName() {
-    return `${this.firstName} ${this.lastName}`
+export default class Elastique extends events.EventEmitter {
+  constructor(options = {}) {
+    super();
+
+    var schema = Joi.object({
+      url: Joi.string().uri({ scheme: ['http', 'https'] }).default('http://localhost:9200'),
+      index: Joi.string().required(),
+      interval: Joi.string().default('1w'),
+      timeout: Joi.number().min(10000).default(10000),
+    }).default();
+
+    const validateSchema = () => new Promise(function (resolve, reject) {
+      schema.validate(options, (err, settings) => {
+        if (err) return reject(err);
+        resolve(settings);
+      })
+    })
+
+    this.ready = true;
+
+    Promise.all([
+      validateSchema()
+    ])
+    .then(([ settings ]) => {
+      console.log('settings', settings);
+      this.settings = settings;
+    })
+    .catch((err) => {
+      this.ready = false;
+      this.emit('error', err);
+      throw err;
+    });
   }
 }
 
-export default User;