<?php

declare(strict_types=1);

namespace Intervention\Image\Modifiers;

use Intervention\Image\Color;
use Intervention\Image\Drivers\SpecializableModifier;
use Intervention\Image\Exceptions\ColorDecoderException;
use Intervention\Image\Exceptions\InvalidArgumentException;
use Intervention\Image\Exceptions\StateException;
use Intervention\Image\Interfaces\ColorInterface;
use Intervention\Image\Interfaces\DrawableInterface;

abstract class AbstractDrawModifier extends SpecializableModifier
{
    /**
     * Return the drawable object which will be rendered by the modifier.
     */
    abstract protected function drawable(): DrawableInterface;

    /**
     * Return the background color of the object rendered by the modifier.
     *
     * @throws StateException
     * @throws ColorDecoderException
     */
    protected function backgroundColor(): ColorInterface
    {
        try {
            return $this->driver()->decodeColor($this->drawable()->backgroundColor());
        } catch (InvalidArgumentException) {
            return Color::transparent();
        }
    }

    /**
     * Return the border color of the object rendered by the modifier.
     *
     * @throws StateException
     * @throws ColorDecoderException
     */
    protected function borderColor(): ColorInterface
    {
        try {
            return $this->driver()->decodeColor($this->drawable()->borderColor());
        } catch (InvalidArgumentException) {
            return Color::transparent();
        }
    }
}