Add BackgroundFill objects

src/TgBotLib/Objects/Telegram/BackgroundFill.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace TgBotLib\Objects\Telegram;
+
+use InvalidArgumentException;
+use TgBotLib\Enums\Types\BackgroundFillType;
+use TgBotLib\Interfaces\ObjectTypeInterface;
+use TgBotLib\Objects\Telegram\BackgroundFill\BackgroundFillFreeformGradient;
+use TgBotLib\Objects\Telegram\BackgroundFill\BackgroundFillGradient;
+use TgBotLib\Objects\Telegram\BackgroundFill\BackgroundFillSolid;
+
+abstract class BackgroundFill implements ObjectTypeInterface
+{
+    protected BackgroundFillType $type;
+
+    /**
+     * Type of the background fill
+     *
+     * @return BackgroundFillType
+     */
+    public function getType(): BackgroundFillType
+    {
+        return $this->type;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public abstract function toArray(): array;
+
+    /**
+     * @inheritDoc
+     */
+    public static function fromArray(array $data): BackgroundFill
+    {
+        if(!isset($data['type']))
+        {
+            throw new InvalidArgumentException('BackgroundFill expected type');
+        }
+
+        return match(BackgroundFillType::tryFrom($data['type']))
+        {
+            BackgroundFillType::SOLID => BackgroundFillSolid::fromArray($data),
+            BackgroundFillType::GRADIENT => BackgroundFillGradient::fromArray($data),
+            BackgroundFillType::FREEFORM_GRADIENT => BackgroundFillFreeformGradient::fromArray($data),
+            default => throw new InvalidArgumentException("Invalid BackgroundFill Type")
+        };
+    }
+}