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<?php declare(strict_types=1);
/*
 * This file is part of PHPUnit.
 *
 * (c) Sebastian Bergmann <sebastian@phpunit.de>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace PHPUnit\TextUI\Output\TestDox;

use const PHP_EOL;
use function array_map;
use function assert;
use function explode;
use function implode;
use function preg_match;
use function preg_split;
use function rtrim;
use function str_starts_with;
use function trim;
use PHPUnit\Event\Code\Throwable;
use PHPUnit\Framework\TestStatus\TestStatus;
use PHPUnit\Logging\TestDox\TestResult as TestDoxTestResult;
use PHPUnit\Logging\TestDox\TestResultCollection;
use PHPUnit\TextUI\Output\Printer;
use PHPUnit\Util\Color;

/**
 * @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
 *
 * @internal This class is not covered by the backward compatibility promise for PHPUnit
 */
final class ResultPrinter
{
    private readonly Printer $printer;
    private readonly bool $colors;

public function __construct(Printer $printer, bool $colors)
    {
        $this->printer = $printer;
        $this->colors  = $colors;
    }

/**
     * @psalm-param array<string, TestResultCollection> $tests
     */
    public function print(array $tests): void
    {
        foreach ($tests as $prettifiedClassName => $_tests) {
            $this->printPrettifiedClassName($prettifiedClassName);

foreach ($_tests as $test) {
                $this->printTestResult($test);
            }

$this->printer->print(PHP_EOL);
        }
    }

/**
     * @psalm-param string $prettifiedClassName
     */
    private function printPrettifiedClassName(string $prettifiedClassName): void
    {
        $buffer = $prettifiedClassName;

if ($this->colors) {
            $buffer = Color::colorizeTextBox('underlined', $buffer);
        }

$this->printer->print($buffer . PHP_EOL);
    }

private function printTestResult(TestDoxTestResult $test): void
    {
        $this->printTestResultHeader($test);
        $this->printTestResultBody($test);
    }

private function printTestResultHeader(TestDoxTestResult $test): void
    {
        $buffer = ' ' . $this->symbolFor($test->status()) . ' ';

if ($this->colors) {
            $this->printer->print(
                Color::colorizeTextBox(
                    $this->colorFor($test->status()),
                    $buffer,
                ),
            );
        } else {
            $this->printer->print($buffer);
        }

$this->printer->print($test->test()->testDox()->prettifiedMethodName($this->colors) . PHP_EOL);
    }

private function printTestResultBody(TestDoxTestResult $test): void
    {
        if ($test->status()->isSuccess()) {
            return;
        }

if (!$test->hasThrowable()) {
            return;
        }

$this->printTestResultBodyStart($test);
        $this->printThrowable($test);
        $this->printTestResultBodyEnd($test);
    }

private function printTestResultBodyStart(TestDoxTestResult $test): void
    {
        $this->printer->print(
            $this->prefixLines(
                $this->prefixFor('start', $test->status()),
                '',
            ),
        );

$this->printer->print(PHP_EOL);
    }

private function printTestResultBodyEnd(TestDoxTestResult $test): void
    {
        $this->printer->print(PHP_EOL);

$this->printer->print(
            $this->prefixLines(
                $this->prefixFor('last', $test->status()),
                '',
            ),
        );

$this->printer->print(PHP_EOL);
    }

private function printThrowable(TestDoxTestResult $test): void
    {
        $throwable = $test->throwable();

assert($throwable instanceof Throwable);

$message    = trim($throwable->description());
        $stackTrace = $this->formatStackTrace($throwable->stackTrace());
        $diff       = '';

if (!empty($message) && $this->colors) {
            ['message' => $message, 'diff' => $diff] = $this->colorizeMessageAndDiff(
                $message,
                $this->messageColorFor($test->status()),
            );
        }

if (!empty($message)) {
            $this->printer->print(
                $this->prefixLines(
                    $this->prefixFor('message', $test->status()),
                    $message,
                ),
            );

$this->printer->print(PHP_EOL);
        }

if (!empty($diff)) {
            $this->printer->print(
                $this->prefixLines(
                    $this->prefixFor('diff', $test->status()),
                    $diff,
                ),
            );

$this->printer->print(PHP_EOL);
        }

if (!empty($stackTrace)) {
            if (!empty($message) || !empty($diff)) {
                $prefix = $this->prefixFor('default', $test->status());
            } else {
                $prefix = $this->prefixFor('trace', $test->status());
            }

$this->printer->print(
                $this->prefixLines($prefix, PHP_EOL . $stackTrace),
            );
        }
    }

/**
     * @psalm-return array{message: string, diff: string}
     */
    private function colorizeMessageAndDiff(string $buffer, string $style): array
    {
        $lines      = $buffer ? array_map('\rtrim', explode(PHP_EOL, $buffer)) : [];
        $message    = [];
        $diff       = [];
        $insideDiff = false;

foreach ($lines as $line) {
            if ($line === '--- Expected') {
                $insideDiff = true;
            }

if (!$insideDiff) {
                $message[] = $line;
            } else {
                if (str_starts_with($line, '-')) {
                    $line = Color::colorize('fg-red', Color::visualizeWhitespace($line, true));
                } elseif (str_starts_with($line, '+')) {
                    $line = Color::colorize('fg-green', Color::visualizeWhitespace($line, true));
                } elseif ($line === '@@ @@') {
                    $line = Color::colorize('fg-cyan', $line);
                }

$diff[] = $line;
            }
        }

$message = implode(PHP_EOL, $message);
        $diff    = implode(PHP_EOL, $diff);

if (!empty($message)) {
            $message = Color::colorizeTextBox($style, $message);
        }

return [
            'message' => $message,
            'diff'    => $diff,
        ];
    }

private function formatStackTrace(string $stackTrace): string
    {
        if (!$this->colors) {
            return rtrim($stackTrace);
        }

$lines        = [];
        $previousPath = '';

foreach (explode(PHP_EOL, $stackTrace) as $line) {
            if (preg_match('/^(.*):(\d+)$/', $line, $matches)) {
                $lines[]      = Color::colorizePath($matches[1], $previousPath) . Color::dim(':') . Color::colorize('fg-blue', $matches[2]) . "\n";
                $previousPath = $matches[1];

continue;
            }

$lines[]      = $line;
            $previousPath = '';
        }

return rtrim(implode('', $lines));
    }

private function prefixLines(string $prefix, string $message): string
    {
        return implode(
            PHP_EOL,
            array_map(
                static fn (string $line) => '   ' . $prefix . ($line ? ' ' . $line : ''),
                preg_split('/\r\n|\r|\n/', $message),
            ),
        );
    }

/**
     * @psalm-param 'default'|'start'|'message'|'diff'|'trace'|'last' $type
     */
    private function prefixFor(string $type, TestStatus $status): string
    {
        if (!$this->colors) {
            return '│';
        }

return Color::colorize(
            $this->colorFor($status),
            match ($type) {
                'default' => '│',
                'start'   => '┐',
                'message' => '├',
                'diff'    => '┊',
                'trace'   => '╵',
                'last'    => '┴',
            },
        );
    }

private function colorFor(TestStatus $status): string
    {
        if ($status->isSuccess()) {
            return 'fg-green';
        }

if ($status->isError()) {
            return 'fg-yellow';
        }

if ($status->isFailure()) {
            return 'fg-red';
        }

if ($status->isSkipped()) {
            return 'fg-cyan';
        }

if ($status->isIncomplete() || $status->isDeprecation() || $status->isNotice() || $status->isRisky() || $status->isWarning()) {
            return 'fg-yellow';
        }

return 'fg-blue';
    }

private function messageColorFor(TestStatus $status): string
    {
        if ($status->isSuccess()) {
            return '';
        }

if ($status->isError()) {
            return 'bg-yellow,fg-black';
        }

if ($status->isFailure()) {
            return 'bg-red,fg-white';
        }

if ($status->isSkipped()) {
            return 'fg-cyan';
        }

if ($status->isIncomplete() || $status->isDeprecation() || $status->isNotice() || $status->isRisky() || $status->isWarning()) {
            return 'fg-yellow';
        }

return 'fg-white,bg-blue';
    }

private function symbolFor(TestStatus $status): string
    {
        if ($status->isSuccess()) {
            return '✔';
        }

if ($status->isError() || $status->isFailure()) {
            return '✘';
        }

if ($status->isSkipped()) {
            return '↩';
        }

if ($status->isDeprecation() || $status->isNotice() || $status->isRisky() || $status->isWarning()) {
            return '⚠';
        }

if ($status->isIncomplete()) {
            return '∅';
        }

return '?';
    }
}

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