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<?php

declare (strict_types=1);
namespace Rector\StaticTypeMapper\Naming;

use PhpParser\Node;
use PhpParser\Node\Stmt\ClassLike;
use PhpParser\Node\Stmt\GroupUse;
use PhpParser\Node\Stmt\Use_;
use PhpParser\Node\Stmt\UseUse;
use PHPStan\Analyser\NameScope;
use PHPStan\Analyser\Scope;
use PHPStan\Reflection\ClassReflection;
use PHPStan\Type\Generic\TemplateTypeMap;
use PHPStan\Type\Type;
use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory;
use Rector\Core\PhpParser\AstResolver;
use Rector\Core\Reflection\ReflectionResolver;
use Rector\Naming\Naming\UseImportsResolver;
use Rector\NodeTypeResolver\Node\AttributeKey;
use Rector\StaticTypeMapper\StaticTypeMapper;
use RectorPrefix202308\Symfony\Contracts\Service\Attribute\Required;
/**
 * @see https://github.com/phpstan/phpstan-src/blob/8376548f76e2c845ae047e3010e873015b796818/src/Analyser/NameScope.php#L32
 */
final class NameScopeFactory
{
    /**
     * @readonly
     * @var \Rector\Naming\Naming\UseImportsResolver
     */
    private $useImportsResolver;
    /**
     * @readonly
     * @var \Rector\Core\PhpParser\AstResolver
     */
    private $astResolver;
    /**
     * @readonly
     * @var \Rector\Core\Reflection\ReflectionResolver
     */
    private $reflectionResolver;
    /**
     * @var \Rector\StaticTypeMapper\StaticTypeMapper
     */
    private $staticTypeMapper;
    /**
     * @var \Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory
     */
    private $phpDocInfoFactory;
    public function __construct(UseImportsResolver $useImportsResolver, AstResolver $astResolver, ReflectionResolver $reflectionResolver)
    {
        $this->useImportsResolver = $useImportsResolver;
        $this->astResolver = $astResolver;
        $this->reflectionResolver = $reflectionResolver;
    }
    // This is needed to avoid circular references
    /**
     * @required
     */
    public function autowire(PhpDocInfoFactory $phpDocInfoFactory, StaticTypeMapper $staticTypeMapper) : void
    {
        $this->phpDocInfoFactory = $phpDocInfoFactory;
        $this->staticTypeMapper = $staticTypeMapper;
    }
    public function createNameScopeFromNodeWithoutTemplateTypes(Node $node) : NameScope
    {
        $scope = $node->getAttribute(AttributeKey::SCOPE);
        $namespace = $scope instanceof Scope ? $scope->getNamespace() : null;
        $uses = $this->useImportsResolver->resolve();
        $usesAliasesToNames = $this->resolveUseNamesByAlias($uses);
        if ($scope instanceof Scope && $scope->getClassReflection() instanceof ClassReflection) {
            $classReflection = $scope->getClassReflection();
            $className = $classReflection->getName();
        } else {
            $className = null;
        }
        return new NameScope($namespace, $usesAliasesToNames, $className);
    }
    public function createNameScopeFromNode(Node $node) : NameScope
    {
        $nameScope = $this->createNameScopeFromNodeWithoutTemplateTypes($node);
        $templateTypeMap = $this->templateTemplateTypeMap($node);
        return new NameScope($nameScope->getNamespace(), $nameScope->getUses(), $nameScope->getClassName(), null, $templateTypeMap);
    }
    /**
     * @param Use_[]|GroupUse[] $useNodes
     * @return array<string, string>
     */
    private function resolveUseNamesByAlias(array $useNodes) : array
    {
        $useNamesByAlias = [];
        foreach ($useNodes as $useNode) {
            $prefix = $this->useImportsResolver->resolvePrefix($useNode);
            foreach ($useNode->uses as $useUse) {
                /** @var UseUse $useUse */
                $aliasName = $useUse->getAlias()->name;
                // uses must be lowercase, as PHPStan lowercases it
                $lowercasedAliasName = \strtolower($aliasName);
                $useNamesByAlias[$lowercasedAliasName] = $prefix . $useUse->name->toString();
            }
        }
        return $useNamesByAlias;
    }
    private function templateTemplateTypeMap(Node $node) : TemplateTypeMap
    {
        $nodeTemplateTypes = $this->resolveTemplateTypesFromNode($node);
        $classTemplateTypes = [];
        $classReflection = $this->reflectionResolver->resolveClassReflection($node);
        if ($classReflection instanceof ClassReflection) {
            $classLike = $this->astResolver->resolveClassFromClassReflection($classReflection);
            if ($classLike instanceof ClassLike) {
                $classTemplateTypes = $this->resolveTemplateTypesFromNode($classLike);
            }
        }
        $templateTypes = \array_merge($nodeTemplateTypes, $classTemplateTypes);
        return new TemplateTypeMap($templateTypes);
    }
    /**
     * @return Type[]
     */
    private function resolveTemplateTypesFromNode(Node $node) : array
    {
        $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($node);
        $templateTypes = [];
        foreach ($phpDocInfo->getTemplateTagValueNodes() as $templateTagValueNode) {
            $templateTypes[$templateTagValueNode->name] = $this->staticTypeMapper->mapPHPStanPhpDocTypeToPHPStanType($templateTagValueNode, $node);
        }
        return $templateTypes;
    }
}