commit 09929c7b3aea0da23df86fd7adcae50dde415501
Author: Alexey Skobkin <skobkin-ru@ya.ru>
Date:   Tue Sep 5 04:28:08 2017 +0300

    Initial commit. First version added.

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ab27d1e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/.idea
+/vendor
\ No newline at end of file
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..24b7826
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,21 @@
+{
+    "name": "skobkin/ip-detect",
+    "license": "MIT",
+    "type": "project",
+    "description": "Minimalistic IP remote IP detector application",
+    "homepage": "http://ip.skobk.in/",
+    "authors": [
+        {
+            "name": "Alexey Skobkin",
+            "email": "skobkin-ru@ya.ru",
+            "homepage": "https://skobk.in/"
+        }
+    ],
+    "autoload": {
+        "psr-4": { "App\\": "src/" }
+    },
+    "require": {
+        "symfony/http-foundation": "^3.3",
+        "slim/php-view": "^2.2"
+    }
+}
diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..6419455
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,229 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "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": "eff3b1001b5ae7db5011252de36831ba",
+    "packages": [
+        {
+            "name": "psr/http-message",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-message.git",
+                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-message/zipball/f6561bf28d520154e4b0ec72be95418abe6d9363",
+                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for HTTP messages",
+            "homepage": "https://github.com/php-fig/http-message",
+            "keywords": [
+                "http",
+                "http-message",
+                "psr",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "time": "2016-08-06T14:39:51+00:00"
+        },
+        {
+            "name": "slim/php-view",
+            "version": "2.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/slimphp/PHP-View.git",
+                "reference": "122ed121a8d9cf91a94020814d2a3ee6c836754f"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/slimphp/PHP-View/zipball/122ed121a8d9cf91a94020814d2a3ee6c836754f",
+                "reference": "122ed121a8d9cf91a94020814d2a3ee6c836754f",
+                "shasum": ""
+            },
+            "require": {
+                "psr/http-message": "^1.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.8",
+                "slim/slim": "^3.0"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Slim\\Views\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Glenn Eggleton",
+                    "email": "geggleto@gmail.com"
+                }
+            ],
+            "description": "Render PHP view scripts into a PSR-7 Response object.",
+            "keywords": [
+                "framework",
+                "php",
+                "phtml",
+                "renderer",
+                "slim",
+                "template",
+                "view"
+            ],
+            "time": "2016-10-11T07:43:08+00:00"
+        },
+        {
+            "name": "symfony/http-foundation",
+            "version": "v3.3.8",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/http-foundation.git",
+                "reference": "14bacad23a4f075bfd3fd456755236cb261320e3"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/http-foundation/zipball/14bacad23a4f075bfd3fd456755236cb261320e3",
+                "reference": "14bacad23a4f075bfd3fd456755236cb261320e3",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.5.9|>=7.0.8",
+                "symfony/polyfill-mbstring": "~1.1"
+            },
+            "require-dev": {
+                "symfony/expression-language": "~2.8|~3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.3-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\HttpFoundation\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony HttpFoundation Component",
+            "homepage": "https://symfony.com",
+            "time": "2017-08-10T07:07:06+00:00"
+        },
+        {
+            "name": "symfony/polyfill-mbstring",
+            "version": "v1.5.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-mbstring.git",
+                "reference": "7c8fae0ac1d216eb54349e6a8baa57d515fe8803"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/7c8fae0ac1d216eb54349e6a8baa57d515fe8803",
+                "reference": "7c8fae0ac1d216eb54349e6a8baa57d515fe8803",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "suggest": {
+                "ext-mbstring": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.5-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Mbstring\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill for the Mbstring extension",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "mbstring",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2017-06-14T15:44:48+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": []
+}
diff --git a/public/index.php b/public/index.php
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--- /dev/null
+++ b/public/index.php
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+<?php
+
+namespace App;
+
+use \Symfony\Component\HttpFoundation\Request;
+
+$loader = require __DIR__.'/../vendor/autoload.php';
+
+$request = Request::createFromGlobals();
+
+AppKernel::handle($request);
\ No newline at end of file
diff --git a/src/AppKernel.php b/src/AppKernel.php
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--- /dev/null
+++ b/src/AppKernel.php
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+<?php
+
+namespace App;
+
+use App\Controller\DetectorController;
+use Symfony\Component\HttpFoundation\{Request, Response};
+use Symfony\Component\HttpFoundation\Exception\RequestExceptionInterface;
+
+final class AppKernel
+{
+    public const KERNEL_ROOT = __DIR__;
+    public const PROJECT_ROOT = __DIR__.'/..';
+
+    public static function handle(Request $request): void
+    {
+        $response = new Response();
+
+        try {
+            $response = static::handleRaw($request);
+        } catch (RequestExceptionInterface $e) {
+            $response->setStatusCode($e->getCode());
+            $response->setContent($e->getMessage());
+        } catch (\Throwable $e) {
+            $response->setStatusCode(Response::HTTP_INTERNAL_SERVER_ERROR);
+            $response->setContent('Server error');
+        }
+
+        $response->send();
+    }
+
+    public static function handleRaw(Request $request): Response
+    {
+        // It's a kind of routing you know...
+        if ('/json' === $request->getPathInfo()) {
+            $format = DetectorController::FORMAT_JSON;
+        } elseif ('/' === $request->getPathInfo()) {
+            $format = DetectorController::FORMAT_HTML;
+        } else {
+            return new Response('Resource not found', Response::HTTP_NOT_FOUND);
+        }
+
+        return DetectorController::detect($request, $format);
+    }
+}
\ No newline at end of file
diff --git a/src/Controller/DetectorController.php b/src/Controller/DetectorController.php
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--- /dev/null
+++ b/src/Controller/DetectorController.php
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+<?php
+
+namespace App\Controller;
+
+use App\AppKernel;
+use Slim\Views\PhpRenderer;
+use Symfony\Component\HttpFoundation\{JsonResponse, Request, Response};
+
+final class DetectorController
+{
+    public const FORMAT_JSON = 'json';
+    public const FORMAT_HTML = 'html';
+
+    private const TEMPLATES_PATH = AppKernel::PROJECT_ROOT.'/templates';
+
+    public static function detect(Request $request, string $format = 'html'): Response
+    {
+        $clientData = [
+            'ip_address' => $request->getClientIp(),
+            'locale' => $request->getLocale(),
+            'preferred_language' => $request->getPreferredLanguage(),
+        ];
+
+        if (static::FORMAT_JSON === $format) {
+            return new JsonResponse($clientData);
+        }
+
+        $templater = new PhpRenderer(static::TEMPLATES_PATH);
+        $templater->setAttributes($clientData);
+
+        return new Response($templater->fetch('/client_data.php', $clientData));
+    }
+}
\ No newline at end of file
diff --git a/templates/client_data.php b/templates/client_data.php
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index 0000000..0d37cbf
--- /dev/null
+++ b/templates/client_data.php
@@ -0,0 +1,17 @@
+<?php /** @var \Slim\Views\PhpRenderer $this */ ?>
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>IP address</title>
+    </head>
+
+    <body>
+        <h1><?php echo htmlspecialchars($this->getAttribute('ip_address')); ?></h1>
+
+        <pre>
+locale: <?php echo htmlspecialchars($this->getAttribute('locale')); ?>
+
+preferred language: <?php echo htmlspecialchars($this->getAttribute('preferred_language')); ?>
+        </pre>
+    </body>
+</html>
\ No newline at end of file