Merge pull request #40 from FabienO/wotd

Word of the Day Plugin

cli/run.php

@@ -29,6 +29,7 @@
 use Room11\Jeeves\Chat\Plugin\Mdn as MdnPlugin;
 use Room11\Jeeves\Chat\Plugin\Chuck as ChuckPlugin;
 use Room11\Jeeves\Chat\Plugin\Rebecca as RebeccaPlugin;
+use Room11\Jeeves\Chat\Plugin\Wotd as WotdPlugin;
 use Room11\Jeeves\Chat\Room\Host;
 use Room11\Jeeves\Chat\Room\Room;
 use Room11\Jeeves\Fkey\FKey;
@@ -123,6 +124,7 @@
         MdnPlugin::class,
         ChuckPlugin::class,
         RebeccaPlugin::class,
+        WotdPlugin::class,
     ];
 
     foreach ($plugins as $plugin) {

src/Chat/Plugin/Wotd.php

@@ -0,0 +1,65 @@
+<?php declare(strict_types=1);
+
+namespace Room11\Jeeves\Chat\Plugin;
+
+use Room11\Jeeves\Chat\Client\ChatClient;
+use Room11\Jeeves\Chat\Command\Command;
+use Room11\Jeeves\Chat\Command\Message;
+use Amp\Artax\Response;
+
+class Wotd implements Plugin
+{
+    const COMMAND = 'wotd';
+
+    private $chatClient;
+
+    public function __construct(ChatClient $chatClient)
+    {
+        $this->chatClient = $chatClient;
+    }
+
+    public function handle(Message $message): \Generator
+    {
+        if (!$this->validMessage($message)) {
+            return;
+        }
+
+        yield from $this->getResult($message);
+    }
+
+    private function validMessage(Message $message): bool
+    {
+        return $message instanceof Command
+            && $message->getCommand() === self::COMMAND;
+    }
+
+    private function getResult(Message $message): \Generator
+    {
+        $response = yield from $this->chatClient->request(
+            'http://www.dictionary.com/wordoftheday/wotd.rss'
+        );
+
+        yield from $this->chatClient->postMessage(
+            $this->getMessage($response)
+        );
+    }
+
+    private function getMessage(Response $response): string
+    {
+        $internalErrors = libxml_use_internal_errors(true);
+
+        $dom = new \DOMDocument();
+        $dom->loadHTML($response->getBody());
+
+        libxml_use_internal_errors($internalErrors);
+
+        if ($dom->getElementsByTagName('description')->length === 0) {
+            return 'I dun goofed';
+        }
+
+        preg_match("/([^:]+)/", $dom->getElementsByTagName('description')->item(2)->textContent, $before);
+        preg_match("/\:(.*)/", $dom->getElementsByTagName('description')->item(2)->textContent, $after);
+
+        return '**['.$before[0].'](http://www.dictionary.com/browse/'.str_replace(" ", "-", $before[0]).')**' . $after[0];
+    }
+}