Fix one-to-many relations

src/Objects/BaseObject.php

@@ -60,7 +60,7 @@ protected function getPropertyValue($property, $default = null)
 
         $relations = $this->relations();
         if (isset($relations[$property])) {
-            return $relations[$property]::make($value);
+            return $this->getRelationValue($property, $value);
         }
 
         /** @var BaseObject $class */
@@ -77,6 +77,34 @@ protected function getPropertyValue($property, $default = null)
         return $value;
     }
 
+    /**
+     * @param string $relationName
+     * @param array  $relationRawData
+     * @return array|\Illuminate\Support\Enumerable|\Illuminate\Support\Traits\EnumeratesValues|\Telegram\Bot\Objects\BaseObject
+     */
+    protected function getRelationValue(string $relationName, iterable $relationRawData)
+    {
+        /** @var class-string<\Telegram\Bot\Objects\BaseObject>|list<class-string<\Telegram\Bot\Objects\BaseObject>> $relation */
+        $relation = $this->relations()[$relationName];
+
+        if (is_string($relation) && class_exists($relation)) {
+            return $relation::make($relationRawData);
+        }
+
+        $isOneToManyRelation = is_array($relation);
+        if ($isOneToManyRelation) {
+            /** @var class-string<\Telegram\Bot\Objects\BaseObject> $clasString */
+            $clasString = $relation[0];
+            $relatedObjects = Collection::make(); // @todo array type can be used in v4
+            foreach ($relationRawData as $singleObjectRawData) {
+                $relatedObjects[] = $clasString::make($singleObjectRawData);
+            }
+            return $relatedObjects;
+        }
+
+        throw new \InvalidArgumentException("Unknown type of the relationship data for the $relationName relation.");
+    }
+
     /**
      * Get an item from the collection by key.
      *

src/Objects/Game.php

@@ -22,9 +22,9 @@ class Game extends BaseObject
     public function relations()
     {
         return [
-            'photo' => PhotoSize::class,
-            'text_entities' => MessageEntity::class,
-            'animation' => Animation::class,
+            'photo'         => [PhotoSize::class],
+            'text_entities' => [MessageEntity::class],
+            'animation'     => Animation::class,
         ];
     }
 }

src/Objects/Message.php

@@ -71,14 +71,14 @@ public function relations()
             'forward_from'       => User::class,
             'forward_from_chat'  => Chat::class,
             'reply_to_message'   => self::class,
-            'entities'           => MessageEntity::class,
-            'caption_entities'   => MessageEntity::class,
+            'entities'           => [MessageEntity::class],
+            'caption_entities'   => [MessageEntity::class],
             'audio'              => Audio::class,
             'dice'               => Dice::class,
             'animation'          => Animation::class,
             'document'           => Document::class,
             'game'               => Game::class,
-            'photo'              => PhotoSize::class,
+            'photo'              => [PhotoSize::class],
             'sticker'            => Sticker::class,
             'video'              => Video::class,
             'voice'              => Voice::class,
@@ -88,9 +88,9 @@ public function relations()
             'venue'              => Venue::class,
             'poll'               => Poll::class,
             'new_chat_member'    => ChatMember::class,
-            'new_chat_members'   => User::class,
+            'new_chat_members'   => [User::class],
             'left_chat_member'   => User::class,
-            'new_chat_photo'     => PhotoSize::class,
+            'new_chat_photo'     => [PhotoSize::class],
             'delete_chat_photo'  => ChatPhoto::class,
             'pinned_message'     => self::class,
             'invoice'            => Invoice::class,

src/Objects/Passport/EncryptedPassportElement.php

@@ -26,11 +26,11 @@ class EncryptedPassportElement extends BaseObject
     public function relations()
     {
         return [
-            'files'        => PassportFile::class,
+            'files'        => [PassportFile::class],
             'front_side'   => PassportFile::class,
             'reverse_side' => PassportFile::class,
             'selfie'       => PassportFile::class,
-            'translation'  => PassportFile::class,
+            'translation'  => [PassportFile::class],
         ];
     }
 }

src/Objects/Passport/SecureValue.php

@@ -26,8 +26,8 @@ public function relations()
             'front_side'   => FileCredentials::class,
             'reverse_side' => FileCredentials::class,
             'selfie'       => FileCredentials::class,
-            'translation'  => FileCredentials::class,
-            'files'        => FileCredentials::class,
+            'translation'  => [FileCredentials::class],
+            'files'        => [FileCredentials::class],
         ];
     }
 }

src/Objects/Payments/ShippingOption.php

@@ -19,7 +19,7 @@ class ShippingOption extends BaseObject
     public function relations()
     {
         return [
-            'prices' => LabeledPrice::class,
+            'prices' => [LabeledPrice::class],
         ];
     }
 }

src/Objects/Poll.php

@@ -24,7 +24,7 @@ class Poll extends BaseObject
     public function relations()
     {
         return [
-            'options' => PollOption::class,
+            'options' => [PollOption::class],
         ];
     }
 }

src/Objects/StickerSet.php

@@ -20,7 +20,7 @@ class StickerSet extends BaseObject
     public function relations()
     {
         return [
-            'stickers' => Sticker::class,
+            'stickers' => [Sticker::class],
             'thumb'    => PhotoSize::class,
         ];
     }

src/Objects/UserProfilePhotos.php

@@ -17,7 +17,7 @@ class UserProfilePhotos extends BaseObject
     public function relations()
     {
         return [
-            'photos' => PhotoSize::class,
+            'photos' => [PhotoSize::class],
         ];
     }
 }

tests/Unit/Objects/MessageTest.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Telegram\Bot\Tests\Unit\Objects;
+
+use PHPUnit\Framework\TestCase;
+use Telegram\Bot\Objects\Message;
+use Telegram\Bot\Objects\PhotoSize;
+
+/** @covers \Telegram\Bot\Objects\Message */
+class MessageTest extends TestCase
+{
+    /** @test */
+    public function it_inits_one_to_many_relation(): void
+    {
+        $message = Message::make([
+            'photo' => [
+                ['file_id' => ''],
+                ['file_id' => ''],
+                ['file_id' => ''],
+                ['file_id' => ''],
+            ],
+        ]);
+
+        $this->assertIsIterable($message->photo);
+        $this->assertCount(4, $message->photo);
+        $this->assertInstanceOf(PhotoSize::class, $message->photo[0]);
+        $this->assertInstanceOf(PhotoSize::class, $message->photo[1]);
+        $this->assertInstanceOf(PhotoSize::class, $message->photo[2]);
+        $this->assertInstanceOf(PhotoSize::class, $message->photo[3]);
+    }
+}