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<?php

declare (strict_types=1);
namespace Rector\CodingStyle\Rector\Stmt;

use PhpParser\Comment;
use PhpParser\Node;
use PhpParser\Node\Stmt;
use PhpParser\Node\Stmt\Class_;
use PhpParser\Node\Stmt\ClassConst;
use PhpParser\Node\Stmt\ClassLike;
use PhpParser\Node\Stmt\ClassMethod;
use PhpParser\Node\Stmt\Do_;
use PhpParser\Node\Stmt\For_;
use PhpParser\Node\Stmt\Foreach_;
use PhpParser\Node\Stmt\Function_;
use PhpParser\Node\Stmt\If_;
use PhpParser\Node\Stmt\Interface_;
use PhpParser\Node\Stmt\Nop;
use PhpParser\Node\Stmt\Property;
use PhpParser\Node\Stmt\Switch_;
use PhpParser\Node\Stmt\Trait_;
use PhpParser\Node\Stmt\TryCatch;
use PhpParser\Node\Stmt\While_;
use Rector\Core\Contract\PhpParser\Node\StmtsAwareInterface;
use Rector\Core\Rector\AbstractRector;
use Rector\NodeTypeResolver\Node\AttributeKey;
use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
/**
 * @see \Rector\Tests\CodingStyle\Rector\Stmt\NewlineAfterStatementRector\NewlineAfterStatementRectorTest
 */
final class NewlineAfterStatementRector extends AbstractRector
{
    /**
     * @var array<class-string<Node>>
     */
    private const STMTS_TO_HAVE_NEXT_NEWLINE = [ClassMethod::class, Function_::class, Property::class, If_::class, Foreach_::class, Do_::class, While_::class, For_::class, ClassConst::class, TryCatch::class, Class_::class, Trait_::class, Interface_::class, Switch_::class];
    public function getRuleDefinition() : RuleDefinition
    {
        return new RuleDefinition('Add new line after statements to tidify code', [new CodeSample(<<<'CODE_SAMPLE'
class SomeClass
{
    public function first()
    {
    }
    public function second()
    {
    }
}
CODE_SAMPLE
, <<<'CODE_SAMPLE'
class SomeClass
{
    public function first()
    {
    }

    public function second()
    {
    }
}
CODE_SAMPLE
)]);
    }
    /**
     * @return array<class-string<Node>>
     */
    public function getNodeTypes() : array
    {
        return [StmtsAwareInterface::class, ClassLike::class];
    }
    /**
     * @param StmtsAwareInterface|ClassLike $node
     * @return null|\Rector\Core\Contract\PhpParser\Node\StmtsAwareInterface|\PhpParser\Node\Stmt\ClassLike
     */
    public function refactor(Node $node)
    {
        return $this->processAddNewLine($node, \false);
    }
    /**
     * @param \Rector\Core\Contract\PhpParser\Node\StmtsAwareInterface|\PhpParser\Node\Stmt\ClassLike $node
     * @return null|\Rector\Core\Contract\PhpParser\Node\StmtsAwareInterface|\PhpParser\Node\Stmt\ClassLike
     */
    private function processAddNewLine($node, bool $hasChanged, int $jumpToKey = 0)
    {
        if ($node->stmts === null) {
            return null;
        }
        \end($node->stmts);
        $totalKeys = \key($node->stmts);
        for ($key = $jumpToKey; $key < $totalKeys; ++$key) {
            if (!isset($node->stmts[$key], $node->stmts[$key + 1])) {
                break;
            }
            $stmt = $node->stmts[$key];
            $nextStmt = $node->stmts[$key + 1];
            if ($this->shouldSkip($stmt)) {
                continue;
            }
            $endLine = $stmt->getEndLine();
            $line = $nextStmt->getStartLine();
            $rangeLine = $line - $endLine;
            if ($rangeLine > 1) {
                $rangeLine = $this->resolveRangeLineFromComment($rangeLine, $line, $endLine, $nextStmt);
            }
            // skip same line or < 0 that cause infinite loop or crash
            if ($rangeLine <= 0) {
                continue;
            }
            if ($rangeLine > 1) {
                continue;
            }
            \array_splice($node->stmts, $key + 1, 0, [new Nop()]);
            $hasChanged = \true;
            return $this->processAddNewLine($node, $hasChanged, $key + 2);
        }
        if ($hasChanged) {
            return $node;
        }
        return null;
    }
    /**
     * @param int|float $rangeLine
     * @return int|float
     */
    private function resolveRangeLineFromComment($rangeLine, int $line, int $endLine, Stmt $nextStmt)
    {
        /** @var Comment[]|null $comments */
        $comments = $nextStmt->getAttribute(AttributeKey::COMMENTS);
        if ($this->hasNoComment($comments)) {
            return $rangeLine;
        }
        $phpDocInfo = $this->phpDocInfoFactory->createFromNodeOrEmpty($nextStmt);
        if ($phpDocInfo->hasChanged()) {
            return $rangeLine;
        }
        /** @var Comment[] $comments */
        $line = $comments[0]->getStartLine();
        return $line - $endLine;
    }
    /**
     * @param Comment[]|null $comments
     */
    private function hasNoComment(?array $comments) : bool
    {
        if ($comments === null) {
            return \true;
        }
        return !isset($comments[0]);
    }
    private function shouldSkip(Stmt $stmt) : bool
    {
        return !\in_array(\get_class($stmt), self::STMTS_TO_HAVE_NEXT_NEWLINE, \true);
    }
}