Add Hashids to Token.php; catch bad token exceptions

backend/Token.php

@@ -1,11 +1,21 @@
 <?php
 require_once('./vendor/firebase/php-jwt/src/JWT.php');
+require_once('./vendor/firebase/php-jwt/src/BeforeValidException.php');
+require_once('./vendor/firebase/php-jwt/src/ExpiredException.php');
+require_once('./vendor/firebase/php-jwt/src/SignatureInvalidException.php');
+require_once('./vendor/hashids/hashids/lib/Hashids/HashGenerator.php');
+require_once('./vendor/hashids/hashids/lib/Hashids/Hashids.php');
+
 use \Firebase\JWT\JWT;
+use \Hashids\Hashids;
+
 
 class Token {
   private $key;
+  private $hashids;
   function __construct() {
     $this->key = 'ˈkɑːn.læŋ.ɪŋ_4eva';
+    $this->hashids = new Hashids($this->key, 10);
   }
 
   public function encode ($data) {
@@ -13,6 +23,18 @@ class Token {
   }
 
   public function decode ($token) {
-    return JWT::decode($token, $this->key, array('HS256'));
+    try {
+      return JWT::decode($token, $this->key, array('HS256'));
+    } catch (Exception $ex) {
+      return false;
+    }
+  }
+
+  public function hash ($id) {
+    return $this->hashids->encode($id);
+  }
+
+  public function unhash ($hash) {
+    return $this->hashids->decode($hash);
   }
 }

backend/composer.json

@@ -3,7 +3,8 @@
     "description": "The PHP backend API for Lexiconga (lexicon.ga)",
     "type": "project",
     "require": {
-        "firebase/php-jwt": "^5.0"
+        "firebase/php-jwt": "^5.0",
+        "hashids/hashids": "^1.0"
     },
     "authors": [
         {

backend/composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "0032d2a2e253b895d7f3dbb3856674da",
+    "content-hash": "5d014834681eb6b0d1582cd6e6c0a6c9",
     "packages": [
         {
             "name": "firebase/php-jwt",
@@ -51,6 +51,63 @@
             "description": "A simple library to encode and decode JSON Web Tokens (JWT) in PHP. Should conform to the current spec.",
             "homepage": "https://github.com/firebase/php-jwt",
             "time": "2017-06-27T22:17:23+00:00"
+        },
+        {
+            "name": "hashids/hashids",
+            "version": "1.0.6",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/ivanakimov/hashids.php.git",
+                "reference": "6bd7ceffb2ccddef6cd64e88f1717f97d131cc3c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/ivanakimov/hashids.php/zipball/6bd7ceffb2ccddef6cd64e88f1717f97d131cc3c",
+                "reference": "6bd7ceffb2ccddef6cd64e88f1717f97d131cc3c",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3.3 || ^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.8 || ^5.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Hashids\\": "lib/Hashids/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Ivan Akimov",
+                    "email": "ivan@barreleye.com",
+                    "homepage": "https://twitter.com/IvanAkimov"
+                }
+            ],
+            "description": "Generate short, unique, non-sequential ids (like YouTube and Bitly) from numbers.",
+            "homepage": "http://hashids.org/php",
+            "keywords": [
+                "bitly",
+                "decode",
+                "encode",
+                "hash",
+                "hashid",
+                "hashids",
+                "ids",
+                "obfuscate",
+                "youtube"
+            ],
+            "time": "2016-01-21T04:26:38+00:00"
         }
     ],
     "packages-dev": [],