Rearchitect for different types of response

README.md

@@ -2,7 +2,7 @@
 
 If you know, you know
 
-- `src/entryPoint.php` is the main entry-point function. It will look through all registered implementation of MessageHandler and take the first one that can handle the message. **Register new message handler here.**
-- `src/MessageHandler.php` is the interface for message handlers.
+- `src/entryPoint.php` is the main entry-point function. It will look through all registered implementations of MessageHandler and take the first one that successfully handled the message. **Register new message handler here.**
+- `src/MessageHandler.php` is the abstract class for message handlers. It has a pre-implemented functions to send responses.
 - `src/repl.php` is a REPL to send test messages to the entryPoint, intended for quick tests, using PHP CLI.
 - `test/` is for PHPUnit tests. It is quite empty atm and only contain a placeholder.

src/Handlers.php

@@ -2,18 +2,15 @@
 
 require_once 'MessageHandler.php';
 
-class TestHandler implements MessageHandler
+class TestHandler extends MessageHandler
 {
 
-    public function CanHandle($room_id, $msgid, $message): bool
+    public function TryHandle($room_id, $msgid, $message, $room_lang): bool
     {
-        // TODO: Implement canHandle() method.
-        return $msgid == 0;
-    }
+        if($msgid != 0)
+            return false;
 
-    public function Handle($room_id, $msgid, $message): string
-    {
-        // TODO: Implement handle() method.
-        return "uwu";
+        $this->sendMessage($room_id, "uwu");
+        return true;
     }
 }

src/MessageHandler.php

@@ -1,7 +1,58 @@
 <?php
 
-interface MessageHandler
+abstract class MessageHandler
 {
-    public function CanHandle($room_id, $msgid, $message): bool;
-    public function Handle($room_id, $msgid, $message): string;
+    abstract public function TryHandle($room_id, $msgid, $message, $room_lang): bool;
+
+    protected $token = 'CHANGEME';
+    public $PrintToScreen = false;
+
+    protected function sendMessage($chat, $content, $reply = null, $keyboard = null) {
+        return $this->makeRequest('sendMessage', array(
+            'chat_id' => $chat,
+            'text' => $content,
+            'reply_to_message_id' => $reply,
+            'reply_markup' => $keyboard
+        ));
+    }
+
+    protected function sendSticker($chat, $sticker_id, $reply = null) {
+        return $this->makeRequest('sendSticker', array(
+            'chat_id' => $chat,
+            'sticker' => $sticker_id,
+            'reply_to_message_id' => $reply
+        ));
+    }
+
+    protected function sendPhoto($chat, $file_id, $reply = null) {
+        return $this->makeRequest('sendSticker', array(
+            'chat_id' => $chat,
+            'photo' => $file_id,
+            'reply_to_message_id' => $reply
+        ));
+    }
+
+    private function makeRequest($method, $data, $post = true) {
+        if($this->PrintToScreen){
+            echo get_class($this), ' ', $method, ' ', json_encode($data, JSON_PRETTY_PRINT), "\n";
+            return ;
+        }
+
+        $url = 'https://api.telegram.org/bot' . $this->token . '/' . $method;
+
+        $options = array(
+            'http' => array(
+                'header' => "Content-type: application/x-www-form-urlencoded\r\n",
+                'method' => ($post)? 'GET':'POST'
+            )
+        );
+        if ($post) { // POST request
+            $options['http']['content'] = http_build_query($data);
+        } else { // GET Request
+            $url .= '?' . http_build_query($data);
+        }
+        $context = stream_context_create($options);
+
+        return file_get_contents($url, false, $context);
+    }
 }

src/entryPoint.php

@@ -1,9 +1,9 @@
 <?php
 
 // Placeholder Globals
-$userid = 0;
-$room_lang = "th";
-$is_admin = false;
+//$userid = 0;
+//$room_lang = "th";
+//$is_admin = false;
 define("BLUE_ROOM", 12345);
 define("RED_ROOM", 67890);
 define("INTER_ROOM", 111213);
@@ -14,21 +14,16 @@ require_once 'MessageHandler.php';
 require_once 'Handlers.php';
 
 $handlers = array(
+    new TestHandler(),
     new TestHandler()
 );
 
-function reply_user($room_id, $msgid, $message)
+function reply_user($room_id, $msgid, $message, $room_lang)
 {
-    // Placeholder Globals
-    global $userid;
-    global $room_lang;
-    global $is_admin;
-
     global $handlers;
     foreach ($handlers as $handler) {
-        if($handler->CanHandle($room_id, $msgid, $message)) {
-            return $handler->Handle($room_id, $msgid, $message);
+        if($handler->TryHandle($room_id, $msgid, $message, $room_lang)) {
+            break;
         }
     }
-    return ;
 }

src/repl.php

@@ -8,11 +8,15 @@ $room_id = BLUE_ROOM;
 $msg_id = 0;
 
 echo "Starting test REPL\n";
+
+foreach ($handlers as $handler) {
+    $handler->PrintToScreen = true;
+}
 do {
     echo $msg_id, ' > ';
     $input = fread(STDIN, 80); // Read up to 80 characters or a newline
     $trimmed = trim($input);
 
-    echo reply_user($room_id, $msg_id, $trimmed) , "\n";
+    echo reply_user($room_id, $msg_id, $trimmed, "th") , "\n";
     $msg_id++;
 } while($trimmed !== "exit");