From d3c2f4ed2a5b0fb294d80b98ed35cc8a806e58a3 Mon Sep 17 00:00:00 2001
From: Alejandro Celaya <alejandro@alejandrocelaya.com>
Date: Wed, 20 Jul 2016 12:37:48 +0200
Subject: [PATCH] Created service to resolve IP locations

---
 .../Common/src/Exception/WrongIpException.php | 10 +++++
 .../Common/src/Service/IpLocationResolver.php | 42 +++++++++++++++++++
 .../Service/IpLocationResolverInterface.php   | 11 +++++
 3 files changed, 63 insertions(+)
 create mode 100644 module/Common/src/Exception/WrongIpException.php
 create mode 100644 module/Common/src/Service/IpLocationResolver.php
 create mode 100644 module/Common/src/Service/IpLocationResolverInterface.php

diff --git a/module/Common/src/Exception/WrongIpException.php b/module/Common/src/Exception/WrongIpException.php
new file mode 100644
index 00000000..8aa3a7bf
--- /dev/null
+++ b/module/Common/src/Exception/WrongIpException.php
@@ -0,0 +1,10 @@
+<?php
+namespace Shlinkio\Shlink\Common\Exception;
+
+class WrongIpException extends RuntimeException
+{
+    public static function fromIpAddress($ipAddress, \Exception $prev = null)
+    {
+        return new self(sprintf('Provided IP "%s" is invalid', $ipAddress), 0, $prev);
+    }
+}
diff --git a/module/Common/src/Service/IpLocationResolver.php b/module/Common/src/Service/IpLocationResolver.php
new file mode 100644
index 00000000..0bfa80ce
--- /dev/null
+++ b/module/Common/src/Service/IpLocationResolver.php
@@ -0,0 +1,42 @@
+<?php
+namespace Shlinkio\Shlink\Common\Service;
+
+use Acelaya\ZsmAnnotatedServices\Annotation\Inject;
+use GuzzleHttp\Client;
+use GuzzleHttp\Exception\GuzzleException;
+use Shlinkio\Shlink\Common\Exception\WrongIpException;
+
+class IpLocationResolver implements IpLocationResolverInterface
+{
+    const SERVICE_PATTERN = 'http://freegeoip.net/json/%s';
+
+    /**
+     * @var Client
+     */
+    private $httpClient;
+
+    /**
+     * IpLocationResolver constructor.
+     * @param Client $httpClient
+     *
+     * @Inject({"httpClient"})
+     */
+    public function __construct(Client $httpClient)
+    {
+        $this->httpClient = $httpClient;
+    }
+
+    /**
+     * @param $ipAddress
+     * @return array
+     */
+    public function resolveIpLocation($ipAddress)
+    {
+        try {
+            $response = $this->httpClient->get(sprintf(self::SERVICE_PATTERN, $ipAddress));
+            return json_decode($response->getBody(), true);
+        } catch (GuzzleException $e) {
+            throw WrongIpException::fromIpAddress($ipAddress, $e);
+        }
+    }
+}
diff --git a/module/Common/src/Service/IpLocationResolverInterface.php b/module/Common/src/Service/IpLocationResolverInterface.php
new file mode 100644
index 00000000..350c2b9c
--- /dev/null
+++ b/module/Common/src/Service/IpLocationResolverInterface.php
@@ -0,0 +1,11 @@
+<?php
+namespace Shlinkio\Shlink\Common\Service;
+
+interface IpLocationResolverInterface
+{
+    /**
+     * @param $ipAddress
+     * @return array
+     */
+    public function resolveIpLocation($ipAddress);
+}