<?php

declare(strict_types=1);

namespace Symplify\CodingStandard\Rules;

use Nette\Utils\Strings;
use PhpParser\Node;
use PhpParser\Node\Stmt\Class_;
use PHPStan\Analyser\Scope;
use PHPStan\Broker\Broker;

/**
 * @see \Symplify\CodingStandard\Tests\Rules\PrefixAbstractClassRule\PrefixAbstractClassRuleTest
 */
final class PrefixAbstractClassRule extends AbstractSymplifyRule
{
    /**
     * @var string
     */
    public const ERROR_MESSAGE = 'Abstract class name "%s" must be prefixed with "Abstract"';

    /**
     * @var Broker
     */
    private $broker;

    public function __construct(Broker $broker)
    {
        $this->broker = $broker;
    }

    /**
     * @return string[]
     */
    public function getNodeTypes(): array
    {
        return [Class_::class];
    }

    /**
     * @param Class_ $node
     * @return string[]
     */
    public function process(Node $node, Scope $scope): array
    {
        $className = (string) $node->namespacedName;
        if (! class_exists($className)) {
            return [];
        }

        $classReflection = $this->broker->getClass($className);
        if (! $classReflection->isAbstract()) {
            return [];
        }

        $shortClassName = (string) $node->name;
        if (Strings::startsWith($shortClassName, 'Abstract')) {
            return [];
        }

        return [sprintf(self::ERROR_MESSAGE, $shortClassName)];
    }
}