<?php

declare (strict_types=1);
namespace Rector\TypeDeclaration\Rector\ClassMethod;

use PhpParser\Node;
use PhpParser\Node\Expr\Array_;
use PhpParser\Node\Identifier;
use PhpParser\Node\Stmt\ClassMethod;
use PhpParser\Node\Stmt\Function_;
use PhpParser\Node\Stmt\Return_;
use Rector\PHPStan\ScopeFetcher;
use Rector\Rector\AbstractRector;
use Rector\TypeDeclaration\TypeInferer\ReturnTypeInferer;
use Rector\ValueObject\PhpVersionFeature;
use Rector\VendorLocker\NodeVendorLocker\ClassMethodReturnTypeOverrideGuard;
use Rector\VersionBonding\Contract\MinPhpVersionInterface;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
 * @see \Rector\Tests\TypeDeclaration\Rector\ClassMethod\ReturnTypeFromReturnDirectArrayRector\ReturnTypeFromReturnDirectArrayRectorTest
 */
final class ReturnTypeFromReturnDirectArrayRector extends AbstractRector implements MinPhpVersionInterface
{
    /**
     * @readonly
     */
    private ClassMethodReturnTypeOverrideGuard $classMethodReturnTypeOverrideGuard;
    /**
     * @readonly
     */
    private ReturnTypeInferer $returnTypeInferer;
    public function __construct(ClassMethodReturnTypeOverrideGuard $classMethodReturnTypeOverrideGuard, ReturnTypeInferer $returnTypeInferer)
    {
        $this->classMethodReturnTypeOverrideGuard = $classMethodReturnTypeOverrideGuard;
        $this->returnTypeInferer = $returnTypeInferer;
    }
    public function getRuleDefinition() : RuleDefinition
    {
        return new RuleDefinition('Add return type from return direct array', [new CodeSample(<<<'CODE_SAMPLE'
final class AddReturnArray
{
    public function getArray()
    {
        return [1, 2, 3];
    }
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
final class AddReturnArray
{
    public function getArray(): array
    {
        return [1, 2, 3];
    }
}
CODE_SAMPLE
)]);
    }
    /**
     * @return array<class-string<Node>>
     */
    public function getNodeTypes() : array
    {
        return [ClassMethod::class, Function_::class];
    }
    /**
     * @param ClassMethod|Function_ $node
     */
    public function refactor(Node $node) : ?Node
    {
        $scope = ScopeFetcher::fetch($node);
        // already has return type, skip
        if ($node->returnType instanceof Node) {
            return null;
        }
        if ($node instanceof ClassMethod && $this->classMethodReturnTypeOverrideGuard->shouldSkipClassMethod($node, $scope)) {
            return null;
        }
        if (!$this->hasReturnArray($node)) {
            return null;
        }
        $type = $this->returnTypeInferer->inferFunctionLike($node);
        if (!$type->isArray()->yes()) {
            return null;
        }
        $node->returnType = new Identifier('array');
        return $node;
    }
    public function provideMinPhpVersion() : int
    {
        return PhpVersionFeature::SCALAR_TYPES;
    }
    /**
     * @param \PhpParser\Node\Stmt\ClassMethod|\PhpParser\Node\Stmt\Function_ $functionLike
     */
    private function hasReturnArray($functionLike) : bool
    {
        $stmts = $functionLike->stmts;
        if (!\is_array($stmts)) {
            return \false;
        }
        foreach ($stmts as $stmt) {
            if (!$stmt instanceof Return_) {
                continue;
            }
            if (!$stmt->expr instanceof Array_) {
                continue;
            }
            return \true;
        }
        return \false;
    }
}
