<?php

declare (strict_types=1);
namespace Rector\Symfony\CodeQuality\Rector\Trait_;

use PhpParser\Node;
use PhpParser\Node\Expr\Assign;
use PhpParser\Node\Expr\PropertyFetch;
use PhpParser\Node\Stmt\ClassMethod;
use PhpParser\Node\Stmt\Expression;
use PhpParser\Node\Stmt\Return_;
use PhpParser\Node\Stmt\Trait_;
use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfo;
use Rector\BetterPhpDocParser\PhpDocInfo\PhpDocInfoFactory;
use Rector\Php80\NodeAnalyzer\PhpAttributeAnalyzer;
use Rector\Rector\AbstractRector;
use Rector\Symfony\Enum\SymfonyAttribute;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
 * @see \Rector\Symfony\Tests\CodeQuality\Rector\Trait_\AddTraitGetterReturnTypeBasedOnSetterRequiredRector\AddTraitGetterReturnTypeBasedOnSetterRequiredRectorTest
 */
final class AddTraitGetterReturnTypeBasedOnSetterRequiredRector extends AbstractRector
{
    /**
     * @readonly
     */
    private PhpDocInfoFactory $phpDocInfoFactory;
    /**
     * @readonly
     */
    private PhpAttributeAnalyzer $phpAttributeAnalyzer;
    public function __construct(PhpDocInfoFactory $phpDocInfoFactory, PhpAttributeAnalyzer $phpAttributeAnalyzer)
    {
        $this->phpDocInfoFactory = $phpDocInfoFactory;
        $this->phpAttributeAnalyzer = $phpAttributeAnalyzer;
    }
    public function getRuleDefinition(): RuleDefinition
    {
        return new RuleDefinition('Add trait getter return type based on setter with @required annotation or #[\Symfony\Contracts\Service\Attribute\Required] attribute', [new CodeSample(<<<'CODE_SAMPLE'
use stdClass;

trait SomeTrait
{
    private $service;

    public function getService()
    {
        return $this->service;
    }

    /**
     * @required
     */
    public function setService(stdClass $stdClass)
    {
        $this->stdClass = $stdClass;
    }
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
use stdClass;

trait SomeTrait
{
    private $service;

    public function getService(): stdClass
    {
        return $this->service;
    }

    /**
     * @required
     */
    public function setService(stdClass $stdClass)
    {
        $this->stdClass = $stdClass;
    }
}
CODE_SAMPLE
)]);
    }
    /**
     * @return array<class-string<Node>>
     */
    public function getNodeTypes(): array
    {
        return [Trait_::class];
    }
    /**
     * @param Trait_ $node
     */
    public function refactor(Node $node): ?Node
    {
        $methods = $node->getMethods();
        if (count($methods) !== 2) {
            return null;
        }
        $props = $node->getProperties();
        if (count($props) !== 1) {
            return null;
        }
        $getMethod = null;
        foreach ($methods as $method) {
            $methodName = (string) $this->getName($method);
            if (strncmp($methodName, 'set', strlen('set')) !== 0) {
                continue;
            }
            $getterMethod = 'get' . ltrim($methodName, 'set');
            $getMethod = $node->getMethod($getterMethod);
            // getter for setter is not exists
            if (!$getMethod instanceof ClassMethod) {
                return null;
            }
            // already returned
            if ($getMethod->returnType instanceof Node) {
                return null;
            }
            if (count((array) $method->getStmts()) !== 1) {
                return null;
            }
            if (!$this->shouldProcess($method)) {
                return null;
            }
            if (count($method->params) !== 1) {
                return null;
            }
            if (!$method->params[0]->type instanceof Node) {
                return null;
            }
            $stmts = (array) $method->getStmts();
            if (!$stmts[0] instanceof Expression || !$stmts[0]->expr instanceof Assign || !$stmts[0]->expr->var instanceof PropertyFetch || !$this->nodeComparator->areNodesEqual($stmts[0]->expr->expr, $method->params[0]->var)) {
                return null;
            }
            $getterStmts = (array) $getMethod->getStmts();
            if (count($getterStmts) !== 1) {
                return null;
            }
            if (!$getterStmts[0] instanceof Return_ || !$getterStmts[0]->expr instanceof PropertyFetch) {
                return null;
            }
            $getMethod->returnType = $method->params[0]->type;
            return $node;
        }
        return null;
    }
    private function shouldProcess(ClassMethod $classMethod): bool
    {
        $phpDocInfo = $this->phpDocInfoFactory->createFromNode($classMethod);
        if ($phpDocInfo instanceof PhpDocInfo && $phpDocInfo->hasByName('required')) {
            return \true;
        }
        return $this->phpAttributeAnalyzer->hasPhpAttribute($classMethod, SymfonyAttribute::REQUIRED);
    }
}
