<?php

namespace SixShop\MakerBundle\Tests\Unit\Generator;

use PHPUnit\Framework\TestCase;
use SixShop\MakerBundle\Generator\ComposerGenerator;
use Symfony\Component\Console\Style\SymfonyStyle;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

class ComposerGeneratorTest extends TestCase
{
    private $composerGenerator;
    private $io;
    private $testDir;

    protected function setUp(): void
    {
        $this->testDir = sys_get_temp_dir() . '/composer_test_' . uniqid();
        mkdir($this->testDir, 0777, true);
        
        // Create mock SymfonyStyle
        $this->io = $this->createMock(SymfonyStyle::class);
        
        $this->composerGenerator = new ComposerGenerator();
    }

    protected function tearDown(): void
    {
        if (is_dir($this->testDir)) {
            $this->removeDirectory($this->testDir);
        }
    }

    private function removeDirectory($dir)
    {
        if (!is_dir($dir)) {
            return;
        }
        
        $items = scandir($dir);
        foreach ($items as $item) {
            if ($item != '.' && $item != '..') {
                $path = $dir . DIRECTORY_SEPARATOR . $item;
                if (is_dir($path)) {
                    $this->removeDirectory($path);
                } else {
                    unlink($path);
                }
            }
        }
        rmdir($dir);
    }

    public function testGenerateContent()
    {
        $packageName = 'six-shop/test-extension';
        $namespace = 'SixShop\\TestExtension\\';
        $id = 'six-shop-test-extension';
        $description = 'A test extension package';

        $content = $this->composerGenerator->generateContent($packageName, $namespace, $id, $description);

        $this->assertIsString($content);
        $this->assertNotEmpty($content);
        
        // Test JSON structure
        $jsonData = json_decode($content, true);
        $this->assertIsArray($jsonData);
        $this->assertEquals(JSON_ERROR_NONE, json_last_error());
        
        // Test package information
        $this->assertEquals($packageName, $jsonData['name']);
        $this->assertEquals($description, $jsonData['description']);
        
        // Test PSR-4 autoloading
        $this->assertArrayHasKey('autoload', $jsonData);
        $this->assertArrayHasKey('psr-4', $jsonData['autoload']);
        $this->assertArrayHasKey($namespace, $jsonData['autoload']['psr-4']);
        $this->assertEquals('src', $jsonData['autoload']['psr-4'][$namespace]);
        
        // Test SixShop extension configuration
        $this->assertArrayHasKey('extra', $jsonData);
        $this->assertArrayHasKey('sixshop', $jsonData['extra']);
        $this->assertEquals($id, $jsonData['extra']['sixshop']['id']);
    }

    public function testSaveComposerFile()
    {
        $packageName = 'six-shop/test-extension';
        $content = '{"name": "six-shop/test-extension", "description": "Test"}';
        
        $this->io->expects($this->once())
            ->method('success')
            ->with($this->stringContains('composer.json 文件已成功生成'));

        $result = $this->composerGenerator->saveComposerFile($packageName, $content, $this->testDir, $this->io);

        $this->assertTrue($result);
        $this->assertFileExists($this->testDir . '/composer.json');
        $this->assertEquals($content, file_get_contents($this->testDir . '/composer.json'));
    }

    public function testSaveComposerFileFailure()
    {
        $packageName = 'six-shop/test-extension';
        $content = '{"name": "six-shop/test-extension"}';
        $invalidDir = '/invalid/directory/path';
        
        $this->io->expects($this->once())
            ->method('error')
            ->with($this->stringContains('无法创建目录'));

        $result = $this->composerGenerator->saveComposerFile($packageName, $content, $invalidDir, $this->io);

        $this->assertFalse($result);
    }

    public function testCreateComposerJson()
    {
        $packageName = 'six-shop/test-extension';
        $namespace = 'SixShop\\TestExtension\\';
        $id = 'six-shop-test-extension';
        $description = 'A test extension package';

        $this->io->expects($this->once())
            ->method('section')
            ->with('生成的 composer.json 内容:');
            
        $this->io->expects($this->once())
            ->method('text')
            ->with($this->isType('string'));
            
        $this->io->expects($this->once())
            ->method('confirm')
            ->with('是否将内容保存到 composer.json 文件?', true)
            ->willReturn(true);
            
        $this->io->expects($this->once())
            ->method('success')
            ->with($this->stringContains('composer.json 文件已成功生成'));

        $result = $this->composerGenerator->createComposerJson(
            $packageName, $namespace, $id, $description, $this->testDir, $this->io
        );

        $this->assertTrue($result);
        $this->assertFileExists($this->testDir . '/composer.json');
    }

    public function testCreateComposerJsonWithUserDecline()
    {
        $packageName = 'six-shop/test-extension';
        $namespace = 'SixShop\\TestExtension\\';
        $id = 'six-shop-test-extension';
        $description = 'A test extension package';

        $this->io->expects($this->once())
            ->method('confirm')
            ->with('是否将内容保存到 composer.json 文件?', true)
            ->willReturn(false);

        $result = $this->composerGenerator->createComposerJson(
            $packageName, $namespace, $id, $description, $this->testDir, $this->io
        );

        $this->assertTrue($result);
        $this->assertFileDoesNotExist($this->testDir . '/composer.json');
    }

    public function testGenerateContentWithDifferentNamespaces()
    {
        $testCases = [
            ['SixShop\\Hello\\', 'six-shop/hello'],
            ['MyCompany\\Extensions\\TestExt\\', 'mycompany/test-extension'],
            ['SingleNamespace\\', 'vendor/package']
        ];

        foreach ($testCases as [$namespace, $packageName]) {
            $content = $this->composerGenerator->generateContent($packageName, $namespace, 'test-id', 'Test description');
            
            $jsonData = json_decode($content, true);
            $this->assertArrayHasKey($namespace, $jsonData['autoload']['psr-4']);
            $this->assertEquals('src', $jsonData['autoload']['psr-4'][$namespace]);
        }
    }

    public function testJsonStructureCompliance()
    {
        $content = $this->composerGenerator->generateContent(
            'six-shop/test-extension',
            'SixShop\\TestExtension\\',
            'test-extension-id',
            'Test description'
        );

        $jsonData = json_decode($content, true);
        
        // Test required composer.json fields
        $this->assertArrayHasKey('name', $jsonData);
        $this->assertArrayHasKey('description', $jsonData);
        $this->assertArrayHasKey('type', $jsonData);
        $this->assertArrayHasKey('require', $jsonData);
        $this->assertArrayHasKey('autoload', $jsonData);
        $this->assertArrayHasKey('extra', $jsonData);
        
        // Test type field
        $this->assertEquals('sixshop-extension', $jsonData['type']);
        
        // Test minimum requirements
        $this->assertArrayHasKey('php', $jsonData['require']);
        $this->assertEquals('>=8.3', $jsonData['require']['php']);
    }

    public function testExtensionIdFormat()
    {
        $testCases = [
            'six-shop/hello' => 'six-shop-hello',
            'vendor/my-extension' => 'vendor-my-extension',
            'company/test_pkg' => 'company-test_pkg'
        ];

        foreach ($testCases as $packageName => $expectedId) {
            $content = $this->composerGenerator->generateContent(
                $packageName,
                'Test\\Namespace\\',
                $expectedId,
                'Test description'
            );
            
            $jsonData = json_decode($content, true);
            $this->assertEquals($expectedId, $jsonData['extra']['sixshop']['id']);
        }
    }

    public function testGenerateContentErrorHandling()
    {
        // Test that the method works with valid parameters
        // Since the template exists, this should not throw an exception
        $content = $this->composerGenerator->generateContent(
            'test/package',
            'Test\\Namespace\\',
            'test-id',
            'Test description'
        );
        
        $this->assertIsString($content);
        $this->assertNotEmpty($content);
    }

    public function testSaveComposerFileDirectoryCreation()
    {
        $nestedDir = $this->testDir . '/nested/deep/directory';
        $packageName = 'six-shop/test-extension';
        $content = '{"name": "six-shop/test-extension"}';
        
        $this->io->expects($this->once())
            ->method('success');

        $result = $this->composerGenerator->saveComposerFile($packageName, $content, $nestedDir, $this->io);

        $this->assertTrue($result);
        $this->assertDirectoryExists($nestedDir);
        $this->assertFileExists($nestedDir . '/composer.json');
    }

    public function testCompletePackageJsonStructure()
    {
        $content = $this->composerGenerator->generateContent(
            'six-shop/advanced-extension',
            'SixShop\\AdvancedExtension\\',
            'six-shop-advanced-extension',
            'An advanced SixShop extension with comprehensive features'
        );

        $jsonData = json_decode($content, true);
        
        // Verify complete structure
        $expectedStructure = [
            'name' => 'six-shop/advanced-extension',
            'description' => 'An advanced SixShop extension with comprehensive features',
            'type' => 'sixshop-extension',
            'require' => [
                'php' => '>=8.3',
                'six-shop/core' => '>=0.6 <1.0'
            ],
            'autoload' => [
                'psr-4' => [
                    'SixShop\\AdvancedExtension\\' => 'src'
                ]
            ],
            'extra' => [
                'sixshop' => [
                    'id' => 'six-shop-advanced-extension',
                    'class' => 'SixShop\\AdvancedExtension\\Extension'
                ]
            ]
        ];

        $this->assertEquals($expectedStructure['name'], $jsonData['name']);
        $this->assertEquals($expectedStructure['description'], $jsonData['description']);
        $this->assertEquals($expectedStructure['type'], $jsonData['type']);
        $this->assertEquals($expectedStructure['require'], $jsonData['require']);
        $this->assertEquals($expectedStructure['autoload'], $jsonData['autoload']);
        $this->assertEquals($expectedStructure['extra'], $jsonData['extra']);
    }
}