<?php

namespace MintyPHP\Tests\Architecture;

use PHPUnit\Framework\TestCase;
use RecursiveDirectoryIterator;
use RecursiveIteratorIterator;

class CoreStarterkitContractTest extends TestCase
{
    use ProjectFileAssertionSupport;

    public function testPagesDoNotInstantiateServicesRepositoriesOrGatewaysDirectly(): void
    {
        $violations = $this->findPatternMatchesInPhpFiles('pages', '/\bnew\s+[\\\\A-Za-z0-9_]+(?:Service|Gateway|Repository)\s*\(/');
        $this->assertSame([], $violations, "Direct service/repository/gateway instantiation found in pages/:\n" . implode("\n", $violations));
    }

    public function testPagesDoNotUseDatabaseFacadeDirectly(): void
    {
        $violations = $this->findPatternMatchesInPhpFiles('pages', '/\bDB::/');
        $this->assertSame([], $violations, "Direct DB facade usage found in pages/:\n" . implode("\n", $violations));
    }

    public function testAdminPagesDoNotUseFactoryCreateChains(): void
    {
        $violations = $this->findPatternMatchesInPhpFiles('pages/admin', '/app\([^\n]*Factory::class\)->create/');
        $this->assertSame([], $violations, "Factory create-chain usage found in pages/admin/:\n" . implode("\n", $violations));
    }

    public function testAdminPagesDoNotReferenceFactoryClasses(): void
    {
        $violations = $this->findPatternMatchesInPhpFiles('pages/admin', '/Factory::class/');
        $this->assertSame([], $violations, "Factory class usage found in pages/admin/:\n" . implode("\n", $violations));
    }

    public function testPagesUseRequestInputInsteadOfSuperglobals(): void
    {
        $patterns = [
            '/\$_POST/' => '$_POST',
            '/\$_GET/' => '$_GET',
            '/\$_FILES/' => '$_FILES',
            '/REQUEST_METHOD/' => 'REQUEST_METHOD',
        ];

        foreach ($patterns as $pattern => $label) {
            $violations = $this->findPatternMatchesInPhpFiles('pages', $pattern);
            $this->assertSame([], $violations, "Superglobal {$label} usage found in pages/:\n" . implode("\n", $violations));
        }
    }

    public function testApiPagesDoNotReadJsonBodyDirectly(): void
    {
        $violations = $this->findPatternMatchesInPhpFiles('pages/api/v1', '/ApiResponse::readJsonBody\s*\(/');
        $this->assertSame([], $violations, "ApiResponse::readJsonBody usage found in pages/api/v1/:\n" . implode("\n", $violations));
    }

    public function testLegacyAndTemplateModulesAreRemoved(): void
    {
        $root = $this->projectRootPath();
        $this->assertFileDoesNotExist(
            $root . '/web/js/components/app-filter-overflow.js',
            'Legacy filter overflow module must remain removed.'
        );
        $this->assertFileDoesNotExist(
            $root . '/web/js/components/app-toggle-toolbar.js',
            'Legacy toolbar toggle module must remain removed.'
        );
        $this->assertFileDoesNotExist(
            $root . '/web/js/components/_template.js',
            'Component template module must remain removed from production JS path.'
        );
    }

    public function testTemplatesDoNotUseLegacyFilterToggleMarkup(): void
    {
        $pattern = '/data-(?:toolbar-toggle|filter-overflow|filter-toggle)/';
        $violations = array_merge(
            $this->findPatternMatchesInFiles('templates', $pattern, ['phtml']),
            $this->findPatternMatchesInFiles('pages', $pattern, ['phtml'])
        );
        sort($violations);

        $this->assertSame([], $violations, "Legacy filter toggle markup found in templates/pages:\n" . implode("\n", $violations));
    }

    public function testPagesAndTemplatesDoNotUseInlineModuleScripts(): void
    {
        $pattern = '/<script\b(?=[^>]*\btype=["\']module["\'])(?![^>]*\bsrc=)[^>]*>/i';
        $violations = array_merge(
            $this->findPatternMatchesInFiles('templates', $pattern, ['phtml']),
            $this->findPatternMatchesInFiles('pages', $pattern, ['phtml'])
        );
        sort($violations);

        $this->assertSame([], $violations, "Inline module scripts found in templates/pages:\n" . implode("\n", $violations));
    }

    public function testPagesAndTemplatesUseAssetVersionForJsUrls(): void
    {
        $pattern = '/asset\(\s*[\'"][^\'"]+\.js/i';
        $violations = array_merge(
            $this->findPatternMatchesInFiles('templates', $pattern, ['phtml']),
            $this->findPatternMatchesInFiles('pages', $pattern, ['phtml'])
        );
        sort($violations);

        $this->assertSame([], $violations, "asset(...) JS URLs found in templates/pages:\n" . implode("\n", $violations));
    }

    /**
     * @return list<string>
     */
    private function findPatternMatchesInPhpFiles(string $relativeDirectory, string $pattern): array
    {
        return $this->findPatternMatchesInFiles($relativeDirectory, $pattern, ['php']);
    }

    /**
     * @param list<string> $extensions
     * @return list<string>
     */
    private function findPatternMatchesInFiles(string $relativeDirectory, string $pattern, array $extensions): array
    {
        $root = $this->projectRootPath();
        $basePath = $root . '/' . $relativeDirectory;
        $this->assertDirectoryExists($basePath, 'Directory not found: ' . $relativeDirectory);

        $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($basePath));
        $violations = [];

        /** @var \SplFileInfo $file */
        foreach ($iterator as $file) {
            if (!$file->isFile() || !in_array($file->getExtension(), $extensions, true)) {
                continue;
            }

            $content = file_get_contents($file->getPathname());
            $this->assertNotFalse($content, 'Could not read file: ' . $file->getPathname());

            if (!preg_match($pattern, $content)) {
                continue;
            }

            $relativePath = str_replace($root . '/', '', $file->getPathname());
            $violations[] = $relativePath;
        }

        sort($violations);
        return $violations;
    }
}