<?php

namespace Tests\Unit;

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

class ViewTest extends TestCase
{
    private string $tmpFile;

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

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

    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);
    }
}