Working version.

Author: bogdananton

README.md

@@ -1 +1,31 @@
-# avangate-rest-api-client
+This is a simple client built on top of Guzzle.
+
+### Usage
+
+#### Initialize by calling:
+
+```php
+$client = new Client([
+    'code' => MERCHANT_CODE,
+    'key' => MERCHANT_APIKEY,
+    'base_uri' => 'https://api.avangate.com/3.0/'
+]);
+```
+
+#### Use as a Guzzle client
+
+```php
+try {
+    $response = $client->get('orders/?StartDate=2015-01-01');
+    $orderListing = json_decode($response->getBody()->getContents());
+    
+    print_r($orderListing);
+    
+} catch (\GuzzleHttp\Exception\ClientException $e) {
+    $contents = json_decode($e->getResponse()->getBody()->getContents());
+    var_dump($contents->message);
+    
+} catch (\Exception $e) {
+    var_dump($e->getMessage());
+}
+```

composer.json

@@ -0,0 +1,13 @@
+{
+  "name": "bogdananton/avangate-rest-api-client",
+  "license": "MIT",
+  "require": {
+    "php": "^5.6",
+    "guzzlehttp/guzzle": "6.1.0"
+  },
+  "autoload": {
+    "psr-4": {
+      "AvangateClient\\" : "src/"
+    }
+  }
+}

phpunit.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<phpunit bootstrap="vendor/autoload.php" colors="true">
+    <testsuites>
+        <testsuite name="all">
+            <directory suffix=".php">tests/</directory>
+        </testsuite>
+    </testsuites>
+    <php>
+        <env name="no_proxy" value="*" />
+        <const name="MERCHANT_CODE" value="*****" />
+        <const name="MERCHANT_APIKEY" value="********************" />
+    </php>
+</phpunit>

src/Client.php

@@ -0,0 +1,25 @@
+<?php
+namespace AvangateClient;
+
+class Client extends \GuzzleHttp\Client
+{
+    public function __construct(array $setup)
+    {
+        $date = date('Y-m-d H:i:s');
+        $accept = (array_key_exists('headers.accept', $setup) ? $setup['headers.accept'] : 'application/json');
+
+        $code = $setup['code'];
+        $key = $setup['key'];
+        $hash = hash_hmac('md5', strlen($code) . $code . strlen($date) . $date, $key);
+
+        $headers = [
+            'X-Avangate-Authentication' => 'code="' . $code . '" date="' . $date . '" hash="' . $hash . '"',
+            'Accept' => $accept
+        ];
+
+        $setup['headers'] = array_key_exists('headers', $setup) ? array_merge($setup['headers'], $headers) : $headers;
+        unset($setup['code'], $setup['key'], $setup['version']);
+
+        parent::__construct($setup);
+    }
+}

tests/ConnectTest.php

@@ -0,0 +1,62 @@
+<?php
+namespace tests;
+
+use AvangateClient\Client;
+use GuzzleHttp\Exception\ClientException;
+
+class ConnectTest extends \PHPUnit_Framework_TestCase
+{
+    public function setUp()
+    {
+        if (MERCHANT_CODE === '*****') {
+            $message = 'Set valid credentials (MERCHANT_CODE / MERCHANT_APIKEY) in phpunit.xml file.';
+            static::fail($message . ' Check https://secure.avangate.com/cpanel/account_settings.php for details.');
+        }
+    }
+
+    /**
+     * When invalid credentials are given then throw exception.
+     */
+    public function testWhenInvalidCredentialsAreGivenThenThrowException()
+    {
+        $client = new Client([
+            'code' => 'INVALID-MERCHANT-CODE',
+            'key' => 'INVALID-MERCHANT-APIKEY',
+            'base_uri' => 'https://api.avangate.com/3.0/'
+        ]);
+
+        try {
+            $client->get('currencies/');
+            static::fail('When you see it, an expected exception was not thrown.');
+
+        } catch (ClientException $e) {
+            static::assertEquals(401, $e->getResponse()->getStatusCode());
+            $sentDetails = json_decode($e->getResponse()->getBody()->getContents());
+
+            static::assertEquals('AUTHENTICATION_ERROR', $sentDetails->error_code);
+            static::assertEquals('Authentication needed for this resource', $sentDetails->message);
+        }
+    }
+
+    /**
+     * When valid credentials are set then return valid details.
+     */
+    public function testWhenValidCredentialsAreSetThenReturnValidDetails()
+    {
+        $client = new Client([
+            'code' => MERCHANT_CODE,
+            'key' => MERCHANT_APIKEY,
+            'base_uri' => 'https://api.avangate.com/3.0/'
+        ]);
+
+        $allowedCurrencies = json_decode($client->get('currencies/')->getBody()->getContents(), true);
+
+        static::assertTrue(is_array($allowedCurrencies));
+        static::assertTrue(count($allowedCurrencies) > 0);
+
+        foreach ($allowedCurrencies as $currency) {
+            static::assertEquals(strtolower($currency), $currency);
+            static::assertEquals(3, strlen($currency));
+        }
+    }
+}