<?php

declare (strict_types=1);
namespace Rector\VendorLocker\NodeVendorLocker;

use PhpParser\Node\Stmt\ClassMethod;
use PHPStan\Analyser\Scope;
use PHPStan\Reflection\ClassReflection;
use Rector\FamilyTree\Reflection\FamilyRelationsAnalyzer;
use Rector\NodeNameResolver\NodeNameResolver;
use Rector\NodeTypeResolver\Node\AttributeKey;
use RectorPrefix20210809\Symplify\SmartFileSystem\Normalizer\PathNormalizer;
final class ClassMethodParamVendorLockResolver
{
    /**
     * @var \Rector\NodeNameResolver\NodeNameResolver
     */
    private $nodeNameResolver;
    /**
     * @var \Symplify\SmartFileSystem\Normalizer\PathNormalizer
     */
    private $pathNormalizer;
    /**
     * @var \Rector\FamilyTree\Reflection\FamilyRelationsAnalyzer
     */
    private $familyRelationsAnalyzer;
    public function __construct(\Rector\NodeNameResolver\NodeNameResolver $nodeNameResolver, \RectorPrefix20210809\Symplify\SmartFileSystem\Normalizer\PathNormalizer $pathNormalizer, \Rector\FamilyTree\Reflection\FamilyRelationsAnalyzer $familyRelationsAnalyzer)
    {
        $this->nodeNameResolver = $nodeNameResolver;
        $this->pathNormalizer = $pathNormalizer;
        $this->familyRelationsAnalyzer = $familyRelationsAnalyzer;
    }
    public function isVendorLocked(\PhpParser\Node\Stmt\ClassMethod $classMethod) : bool
    {
        if ($classMethod->isMagic()) {
            return \true;
        }
        $classReflection = $this->resolveClassReflection($classMethod);
        if (!$classReflection instanceof \PHPStan\Reflection\ClassReflection) {
            return \false;
        }
        /** @var string $methodName */
        $methodName = $this->nodeNameResolver->getName($classMethod);
        if ($this->hasTraitMethodVendorLock($classReflection, $methodName)) {
            return \true;
        }
        // has interface vendor lock? → better skip it, as PHPStan has access only to just analyzed classes
        if ($this->hasParentInterfaceMethod($classReflection, $methodName)) {
            return \true;
        }
        $methodName = $this->nodeNameResolver->getName($classMethod);
        foreach ($classReflection->getAncestors() as $ancestorClassReflection) {
            // skip self
            if ($ancestorClassReflection === $classReflection) {
                continue;
            }
            // parent type
            if (!$ancestorClassReflection->hasNativeMethod($methodName)) {
                continue;
            }
            // is file in vendor?
            $fileName = $ancestorClassReflection->getFileName();
            // probably internal class
            if ($fileName === \false) {
                continue;
            }
            $normalizedFileName = $this->pathNormalizer->normalizePath($fileName);
            return \strpos($normalizedFileName, '/vendor/') !== \false;
        }
        return \false;
    }
    private function hasTraitMethodVendorLock(\PHPStan\Reflection\ClassReflection $classReflection, string $methodName) : bool
    {
        $relatedReflectionClasses = $this->familyRelationsAnalyzer->getChildrenOfClassReflection($classReflection);
        foreach ($relatedReflectionClasses as $relatedReflectionClass) {
            foreach ($relatedReflectionClass->getTraits() as $traitReflectionClass) {
                /** @var ClassReflection $traitReflectionClass */
                if ($traitReflectionClass->hasMethod($methodName)) {
                    return \true;
                }
            }
        }
        return \false;
    }
    /**
     * @return \PHPStan\Reflection\ClassReflection|null
     */
    private function resolveClassReflection(\PhpParser\Node\Stmt\ClassMethod $classMethod)
    {
        $scope = $classMethod->getAttribute(\Rector\NodeTypeResolver\Node\AttributeKey::SCOPE);
        if (!$scope instanceof \PHPStan\Analyser\Scope) {
            return null;
        }
        return $scope->getClassReflection();
    }
    /**
     * Has interface even in our project?
     * Better skip it, as PHPStan has access only to just analyzed classes.
     * This might change type, that works for current class, but breaks another implementer.
     */
    private function hasParentInterfaceMethod(\PHPStan\Reflection\ClassReflection $classReflection, string $methodName) : bool
    {
        foreach ($classReflection->getInterfaces() as $interfaceClassReflection) {
            if ($interfaceClassReflection->hasMethod($methodName)) {
                return \true;
            }
        }
        return \false;
    }
}
