<?php

namespace Tests\Unit\Architecture;

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

class ProjectCoverageStructureTest extends TestCase
{
    /**
     * Ensure every controller has at least one matching feature test area.
     */
    public function test_controllers_are_accounted_for_by_feature_tests(): void
    {
        $controllers = $this->filesMatching(['/../../../app', '/../../../Modules'], '/Controller\.php$/');
        $this->assertNotEmpty($controllers);

        $testCorpus = '';
        foreach ($this->filesMatching(['/../../Feature', '/../../../Modules'], '/Test\.php$/') as $testFile) {
            $testCorpus .= file_get_contents($testFile) ?: '';
        }

        foreach ($controllers as $controller) {
            $controllerName = pathinfo($controller, PATHINFO_FILENAME);
            $resourceName = str_replace(['Controller', 'Dashboard'], '', $controllerName);

            $this->assertTrue(
                str_contains($testCorpus, $controllerName) || str_contains($testCorpus, $resourceName) || $controllerName === 'Controller',
                "Controller [{$controllerName}] does not appear to be covered by the feature test corpus.",
            );
        }
    }

    /**
     * Ensure the WMS baseline component is used without duplicate headers across module views.
     */
    public function test_module_views_do_not_contain_duplicate_wms_page_hero_components(): void
    {
        $views = $this->filesMatching(['/../../../Modules'], '/\.blade\.php$/');
        $this->assertNotEmpty($views);

        foreach ($views as $view) {
            if (str_ends_with($view, 'partials.blade.php') || str_ends_with($view, '_form.blade.php')) {
                continue;
            }

            $contents = file_get_contents($view) ?: '';

            $this->assertLessThanOrEqual(
                1,
                substr_count($contents, '<x-wms.page-hero'),
                "View [{$view}] should not contain duplicate page headers.",
            );
        }
    }

    /**
     * Ensure browser tests exist for desktop and mobile navigation flows.
     */
    public function test_browser_navigation_tests_exist_for_mobile_and_desktop(): void
    {
        $browserTests = $this->filesMatching(['/../../Browser'], '/Test\.php$/');
        $contents = implode("\n", array_map(static fn (string $file): string => file_get_contents($file) ?: '', $browserTests));

        $this->assertStringContainsString('desktop sidebar', strtolower($contents));
        $this->assertStringContainsString('mobile menu', strtolower($contents));
    }

    /**
     * @param array<int, string> $relativeDirectories
     * @return array<int, string>
     */
    private function filesMatching(array $relativeDirectories, string $pattern): array
    {
        $files = [];

        foreach ($relativeDirectories as $relativeDirectory) {
            $directory = realpath(__DIR__ . $relativeDirectory);

            if (! is_string($directory) || ! is_dir($directory)) {
                continue;
            }

            $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($directory));

            foreach ($iterator as $file) {
                if (! $file instanceof SplFileInfo || ! $file->isFile()) {
                    continue;
                }

                if (preg_match($pattern, $file->getFilename()) === 1) {
                    $files[] = $file->getPathname();
                }
            }
        }

        return array_values(array_unique($files));
    }
}