Create a templates of TyposClient and TyposClientInterface classes.

.gitignore

-.idea/
+.idea/
\ No newline at end of file
+vendor/

composer.json

@@ -8,5 +8,10 @@
       "name": "George Popoff",
       "email": "ambulance@etersoft.ru"
     }
-  ]
-}
+  ],
+  "version": "0.1",
\ No newline at end of file
+
+  "require": {
+    "fguillot/json-rpc": "@stable"
+  }
+}

composer.lock

+{
+    "_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": "f25e06bdf6a86c8328ae931b34106496",
+    "packages": [
+        {
+            "name": "fguillot/json-rpc",
+            "version": "v1.2.5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/fguillot/JsonRPC.git",
+                "reference": "fa075cc89c1ae5f0c4123d27772e5caeac045946"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/fguillot/JsonRPC/zipball/fa075cc89c1ae5f0c4123d27772e5caeac045946",
+                "reference": "fa075cc89c1ae5f0c4123d27772e5caeac045946",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.4"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "4.8.*"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "JsonRPC": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Frédéric Guillot"
+                }
+            ],
+            "description": "Simple Json-RPC client/server library that just works",
+            "homepage": "https://github.com/fguillot/JsonRPC",
+            "time": "2018-02-21T23:58:51+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": {
+        "fguillot/json-rpc": 0
+    },
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": []
+}

src/TyposArticle.php

+<?php
+/**
+ * Created by PhpStorm.
+ * User: ambulance
+ * Date: 25.05.18
+ * Time: 19:47
+ */
+
+namespace Etersoft\Typos;
+
+/**
+ * Class TyposArticle
+ *
+ * An article object with a text and id
+ *
+ * @package Etersoft\Typos
+ */
+class TyposArticle
+{
+    public $id;
+    public $text;
+
+    /**
+     * TyposArticle constructor.
+     * @param $id   integer Article id
+     * @param $text string Article text
+     */
+    public function __construct(integer $id, string $text)
+    {
+        $this->id = $id;
+        $this->text = $text;
+    }
+}
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src/TyposClient.php

+<?php
+/**
+ * Created by ambulance@eterosf.ru
+ * Date: 25.05.18
+ * Time: 19:24
+ */
+
+namespace Etersoft\Typos;
+
+// Enable autoloading
+require __DIR__ . '../vendor/autoload.php';
+
+use JsonRPC\Server;
+
+/**
+ * Class TyposClient
+ *
+ * Allows to manage typos-fixing request from typo-fixing server.
+ * Part of the Etersoft Typo system.
+ * Uses a json-rpc 2.0 protocol.
+ *
+ * @package Etersoft\Typos
+ */
+class TyposClient
+{
+    /**
+     * @var Server
+     */
+    private $server;
+
+    private $interface;
+
+    /**
+     * TyposAbstractClient constructor.
+     *
+     * @param TyposClientInterface $interface Interface of server
+     */
+    public function __construct(TyposClientInterface $interface)
+    {
+        $this->interface = $interface;
+
+        $this->server = new Server();
+        $procedureHandler = $this->server->getProcedureHandler();
+
+        $procedureHandler->withClassAndMethod("fixTypo", $this->interface);
+    }
+
+    /**
+     * Execute a json-rpc server
+     * @return string
+     */
+    public function run() {
+        return $this->server->execute();
+    }
+}
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src/TyposClientInterface.php

+<?php
+/**
+ * Created by PhpStorm.
+ * User: ambulance
+ * Date: 25.05.18
+ * Time: 19:39
+ */
+
+namespace Etersoft\Typos;
+
+/**
+ * Class TyposClientInterface
+ *
+ * Interface for the TyposClient. Must be implemented by a user
+ * and passed to the TyposClient constructor during initialization process.
+ *
+ * @package Etersoft\Typos
+ */
+abstract class TyposClientInterface
+{
+    /**
+     * Should return an article text for a provided article link.
+     *
+     * @param string $link A link to a article. User should define an article id.
+     *
+     * @return TyposArticle
+     */
+    protected abstract function getArticleFromLink(string $link);
+
+    /**
+     * Should persist a provided article in database.
+     *
+     * @param TyposArticle $article Article
+     * @return void
+     */
+    protected abstract function saveArticle(TyposArticle $article);
+
+    /**
+     * Fixes a typo in an article from a $link url. Uses a context while
+     * fixing to determine a typo position.
+     *
+     * @param string $typo          Typo to be fixed
+     * @param string $corrected     Correct variant
+     * @param string $context       Context of typo
+     * @param string $link          Link where the typo exist
+     */
+    public function fixTypo(string $typo, string $corrected, string $context, string $link) {
+        $article = $this->getArticleFromLink($link);
+
+        $this->replaceTypoInArticle($typo, $corrected, $context, $article);
+
+        $this->saveArticle($article);
+    }
+
+    /**
+     * This method replaces a given typo in article, using the context to a correct
+     * variant.
+     *
+     * @param string $typo          Typo to be replaced
+     * @param string $corrected     Correct variant
+     * @param string $context       Context where the typo found
+     * @param TyposArticle $article Article to fix the typo
+     */
+    private function replaceTypoInArticle(string $typo, string $corrected, string $context, TyposArticle $article) {
+
+    }
+}
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