<?php

namespace Tests\Unit;

use PHPUnit\Framework\TestCase;
use System\Classes\View;
use System\Classes\MyException;

class ViewTest extends TestCase
{
    private string $tmpFile;

    // setStyle()/setScript()/setManifest() всегда ищут файл в APPPATH/media (это их работа —
    // регистрировать реальные ассеты сайта, Core::findFile() не подменить временной директорией),
    // поэтому фикстуры физически создаются в App/media/* — но с явно тестовым именем (uniqid),
    // а не под видом настоящего "app.css"/"app.js" сайта, который тесту не принадлежит.
    private string $fixtureCss;
    private string $fixtureJs;
    private string $fixtureManifest;

    protected function setUp(): void
    {
        $this->tmpFile = sys_get_temp_dir() . '/bicycle_view_' . uniqid('', true) . '.html';

        $unique                = uniqid('viewtest_', true);
        $this->fixtureCss      = $unique . '.css';
        $this->fixtureJs       = $unique . '.js';
        $this->fixtureManifest = $unique . '.json';

        file_put_contents(APPPATH . '/media/css/' . $this->fixtureCss, '');
        file_put_contents(APPPATH . '/media/js/' . $this->fixtureJs, '');
        file_put_contents(APPPATH . '/media/' . $this->fixtureManifest, '{}');
    }

    protected function tearDown(): void
    {
        if (file_exists($this->tmpFile)) {
            unlink($this->tmpFile);
        }

        foreach ([
            APPPATH . '/media/css/' . $this->fixtureCss,
            APPPATH . '/media/js/' . $this->fixtureJs,
            APPPATH . '/media/' . $this->fixtureManifest,
        ] as $fixtureFile) {
            if (file_exists($fixtureFile)) {
                unlink($fixtureFile);
            }
        }

        // Сбрасываем статические реестры CSS/JS/manifest между тестами
        $ref = new \ReflectionClass(View::class);
        foreach (['_styles' => [], '_scripts' => [], '_manifest' => null] as $prop => $default) {
            $property = $ref->getProperty($prop);
            $property->setAccessible(true);
            $property->setValue(null, $default);
        }
    }

    public function testRenderStaticContent(): void
    {
        file_put_contents($this->tmpFile, 'hello world');
        $view        = new View();
        $view->_file = $this->tmpFile;
        $this->assertSame('hello world', $view->render());
    }

    public function testRenderWithData(): void
    {
        file_put_contents($this->tmpFile, '<?php echo $name; ?>');
        $view        = new View();
        $view->_file = $this->tmpFile;
        $view->_data = ['name' => 'bicycle'];
        $this->assertSame('bicycle', $view->render());
    }

    public function testRenderMultipleVars(): void
    {
        file_put_contents($this->tmpFile, '<?php echo "$a-$b"; ?>');
        $view        = new View();
        $view->_file = $this->tmpFile;
        $view->_data = ['a' => 'foo', 'b' => 'bar'];
        $this->assertSame('foo-bar', $view->render());
    }

    public function testRenderThrowsWhenFileNotSet(): void
    {
        $this->expectException(MyException::class);
        (new View())->render();
    }

    public function testSetFilenameFindsFileInAppPath(): void
    {
        $view = new View();
        $view->setFilename('index', 'view/Index');
        $this->assertStringContainsString('App', $view->_file);
        $this->assertStringEndsWith('index.html', $view->_file);
        $this->assertFileExists($view->_file);
    }

    public function testSetFilenameFindsFileInSysPath(): void
    {
        $view = new View();
        $view->setFilename('404', 'view/errors');
        $this->assertStringContainsString('System', $view->_file);
        $this->assertFileExists($view->_file);
    }

    public function testSetFilenameThrowsWhenNotFound(): void
    {
        $this->expectException(MyException::class);
        (new View())->setFilename('nonexistent_xyz', 'view/Index');
    }

    public function testSetFilenameThrowsWhenDirEmpty(): void
    {
        $this->expectException(MyException::class);
        (new View())->setFilename('index', '');
    }

    public function testConstructorWithFileAndDir(): void
    {
        $view = new View('index', 'view/Index');
        $this->assertNotEmpty($view->_file);
        $this->assertFileExists($view->_file);
    }

    public function testConstructorWithData(): void
    {
        file_put_contents($this->tmpFile, '<?php echo $val; ?>');
        $view        = new View();
        $view->_file = $this->tmpFile;
        $view->_data = ['val' => 'test_value'];
        $this->assertSame('test_value', $view->render());
    }

    public function testExtractSkipDoesNotOverrideLocalVar(): void
    {
        // EXTR_SKIP не перезаписывает уже существующие переменные в шаблоне
        file_put_contents($this->tmpFile, '<?php $x = "local"; extract([], EXTR_SKIP); echo $x; ?>');
        $view        = new View();
        $view->_file = $this->tmpFile;
        $view->_data = ['x' => 'from_data'];
        // Здесь x уже определена в шаблоне ДО extract — EXTR_SKIP не перезапишет
        // Но View делает extract ДО include, поэтому $x = 'from_data' попадёт в шаблон
        $this->assertSame('local', $view->render());
    }

    public function testSetFilenameReturnsSelf(): void
    {
        $view   = new View();
        $result = $view->setFilename('index', 'view/Index');
        $this->assertSame($view, $result);
    }

    public function testSetStyleRegistersLinkTag(): void
    {
        (new View())->setStyle($this->fixtureCss);
        ob_start();
        (new View())->getStyles();
        $html = ob_get_clean();

        $this->assertMatchesRegularExpression(
            '#<link rel="stylesheet" href="/App/media/css/' . preg_quote($this->fixtureCss, '#') . '\?v=\d+">#', $html
        );
    }

    public function testSetStyleMissingFileEchoesAlert(): void
    {
        ob_start();
        (new View())->setStyle('nonexistent_xyz.css');
        $html = ob_get_clean();

        $this->assertStringContainsString('alert-danger', $html);
        $this->assertStringContainsString('nonexistent_xyz.css', $html);

        ob_start();
        (new View())->getStyles();
        $this->assertSame('', ob_get_clean());
    }

    public function testSetScriptRegistersScriptTag(): void
    {
        (new View())->setScript($this->fixtureJs);
        ob_start();
        (new View())->getScripts();
        $html = ob_get_clean();

        $this->assertMatchesRegularExpression(
            '#<script type="text/javascript" src="/App/media/js/' . preg_quote($this->fixtureJs, '#') . '\?v=\d+"></script>#', $html
        );
    }

    public function testSetScriptCustomType(): void
    {
        (new View())->setScript($this->fixtureJs, 'module');
        ob_start();
        (new View())->getScripts();
        $html = ob_get_clean();

        $this->assertStringContainsString('type="module"', $html);
    }

    public function testSetScriptMissingFileEchoesAlert(): void
    {
        ob_start();
        (new View())->setScript('nonexistent_xyz.js');
        $html = ob_get_clean();

        $this->assertStringContainsString('alert-danger', $html);

        ob_start();
        (new View())->getScripts();
        $this->assertSame('', ob_get_clean());
    }

    public function testSetManifestRegistersLinkTag(): void
    {
        (new View())->setManifest($this->fixtureManifest);
        ob_start();
        (new View())->getStyles();
        $html = ob_get_clean();

        $this->assertStringContainsString('<link rel="manifest" href="/App/media/' . $this->fixtureManifest . '">', $html);
    }

    public function testSetManifestMissingFileEchoesAlert(): void
    {
        ob_start();
        (new View())->setManifest('nonexistent_xyz.json');
        $html = ob_get_clean();

        $this->assertStringContainsString('alert-danger', $html);
    }

    public function testGetStylesAndScriptsAreSharedAcrossViewInstances(): void
    {
        // content и layout — разные объекты View, но реестр общий (см. Controller::render())
        (new View())->setStyle($this->fixtureCss);
        (new View())->setScript($this->fixtureJs);

        ob_start();
        (new View())->getStyles();
        $styles = ob_get_clean();

        ob_start();
        (new View())->getScripts();
        $scripts = ob_get_clean();

        $this->assertStringContainsString($this->fixtureCss, $styles);
        $this->assertStringContainsString($this->fixtureJs, $scripts);
    }
}