<?php

declare(strict_types=1);

namespace Drupal\Tests\package_manager\Kernel\PathExcluder;

use ColinODell\PsrTestLogger\TestLogger;
use Drupal\Component\FileSystem\FileSystem as DrupalFileSystem;
use Drupal\Core\Logger\RfcLogLevel;
use Drupal\package_manager\PathLocator;
use Drupal\Tests\package_manager\Kernel\PackageManagerKernelTestBase;
use Symfony\Component\Filesystem\Filesystem;

/**
 * @covers \Drupal\package_manager\PathExcluder\UnknownPathExcluder
 * @group package_manager
 * @internal
 */
class UnknownPathExcluderTest extends PackageManagerKernelTestBase {

  /**
   * {@inheritdoc}
   */
  protected function createTestProject(?string $source_dir = NULL): void {
    // This class needs the test project to be varied for different test
    // methods, so it cannot be called in the setup.
    // @see ::createTestProjectForTemplate()
  }

  /**
   * Creates a test project with or without a nested webroot.
   *
   * @param bool $use_nested_webroot
   *   Whether to use a nested webroot.
   */
  protected function createTestProjectForTemplate(bool $use_nested_webroot): void {
    if (!$use_nested_webroot) {
      // We are not using a nested webroot: the parent test project can be used.
      parent::createTestProject();
    }
    else {
      // Create another directory and copy its contents from fake_site fixture.
      $fake_site_with_nested_webroot = DrupalFileSystem::getOsTemporaryDirectory() . DIRECTORY_SEPARATOR . 'fake_site_with_nested_webroot';
      $fs = new Filesystem();
      if (is_dir($fake_site_with_nested_webroot)) {
        $fs->remove($fake_site_with_nested_webroot);
      }
      $fs->mkdir($fake_site_with_nested_webroot);
      $fs->mirror(__DIR__ . '/../../../fixtures/fake_site', $fake_site_with_nested_webroot);

      // Create a webroot directory in our new directory and copy all folders
      // and files into it, except for ones that should always be in the
      // project root.
      $fs->mkdir($fake_site_with_nested_webroot . DIRECTORY_SEPARATOR . 'webroot');
      $paths_in_project_root = glob("$fake_site_with_nested_webroot/*");
      $keep_in_project_root = [
        $fake_site_with_nested_webroot . '/vendor',
        $fake_site_with_nested_webroot . '/webroot',
        $fake_site_with_nested_webroot . '/composer.json',
        $fake_site_with_nested_webroot . '/composer.lock',
        $fake_site_with_nested_webroot . '/custom',
      ];
      foreach ($paths_in_project_root as $path_in_project_root) {
        if (!in_array($path_in_project_root, $keep_in_project_root, TRUE)) {
          $fs->rename($path_in_project_root, $fake_site_with_nested_webroot . '/webroot' . str_replace($fake_site_with_nested_webroot, '', $path_in_project_root));
        }
      }
      parent::createTestProject($fake_site_with_nested_webroot);

      // We need to reset the test paths with our new webroot.
      /** @var \Drupal\package_manager_bypass\MockPathLocator $path_locator */
      $path_locator = $this->container->get(PathLocator::class);

      $path_locator->setPaths(
        $path_locator->getProjectRoot(),
        $path_locator->getVendorDirectory(),
        'webroot',
        $path_locator->getStagingRoot()
      );
    }
  }

  /**
   * Data provider for testUnknownPath().
   *
   * @return mixed[][]
   *   The test cases.
   */
  public static function providerTestUnknownPath() {
    return [
      'unknown file where web and project root same' => [
        FALSE,
        NULL,
        ['unknown_file.txt'],
      ],
      'unknown file where web and project root different' => [
        TRUE,
        NULL,
        ['unknown_file.txt'],
      ],
      'unknown hidden file where web and project root same' => [
        FALSE,
        NULL,
        ['.unknown_file'],
      ],
      'unknown hidden file where web and project root different' => [
        TRUE,
        NULL,
        ['.unknown_file'],
      ],
      'unknown directory where web and project root same' => [
        FALSE,
        'unknown_dir',
        ['unknown_dir/unknown_dir.README.md', 'unknown_dir/unknown_file.txt'],
      ],
      'unknown directory where web and project root different' => [
        TRUE,
        'unknown_dir',
        ['unknown_dir/unknown_dir.README.md', 'unknown_dir/unknown_file.txt'],
      ],
      'unknown hidden directory where web and project root same' => [
        FALSE,
        '.unknown_dir',
        ['.unknown_dir/unknown_dir.README.md', '.unknown_dir/unknown_file.txt'],
      ],
      'unknown hidden directory where web and project root different' => [
        TRUE,
        '.unknown_dir',
        ['.unknown_dir/unknown_dir.README.md', '.unknown_dir/unknown_file.txt'],
      ],
    ];
  }

  /**
   * Tests that the unknown files and directories are excluded.
   *
   * @param bool $use_nested_webroot
   *   Whether to create test project with a nested webroot.
   * @param string|null $unknown_dir
   *   The path of unknown directory to test or NULL none should be tested.
   * @param string[] $unknown_files
   *   The list of unknown files.
   *
   * @dataProvider providerTestUnknownPath
   */
  public function testUnknownPath(bool $use_nested_webroot, ?string $unknown_dir, array $unknown_files): void {
    $this->createTestProjectForTemplate($use_nested_webroot);

    $active_dir = $this->container->get(PathLocator::class)
      ->getProjectRoot();
    if ($unknown_dir) {
      mkdir("$active_dir/$unknown_dir");
    }
    foreach ($unknown_files as $unknown_file) {
      file_put_contents("$active_dir/$unknown_file", "Unknown File");
    }

    $stage = $this->createStage();
    // Files are only excluded if the web root and project root are different.
    // If anything in the project root is excluded, those paths should be
    // logged.
    if ($use_nested_webroot) {
      $logger = new TestLogger();
      $this->container->get('logger.factory')
        ->get('package_manager')
        ->addLogger($logger);

      $this->runStatusCheck($stage);
      $this->assertTrue($logger->hasRecordThatContains("The following paths in $active_dir aren't recognized as part of your Drupal site, so to be safe, Package Manager is excluding them from all stage operations. If these files are not needed for Composer to work properly in your site, no action is needed. Otherwise, you can disable this behavior by setting the <code>package_manager.settings:include_unknown_files_in_project_root</code> config setting to <code>TRUE</code>.", RfcLogLevel::INFO));
      foreach ($unknown_files as $unknown_file) {
        // If $unknown_file is in a subdirectory, only the subdirectory is going
        // to be logged as an excluded path. The excluder doesn't recurse into
        // subdirectories.
        if (str_contains($unknown_file, '/')) {
          $unknown_file = dirname($unknown_file);
        }
        $this->assertTrue($logger->hasRecordThatContains($unknown_file, RfcLogLevel::INFO));
      }
    }

    $stage->create();
    $stage->require(['ext-json:*']);
    $stage_dir = $stage->getSandboxDirectory();

    foreach ($unknown_files as $path) {
      $this->assertFileExists("$active_dir/$path");
      if ($use_nested_webroot) {
        // It will not exist in stage as it will be excluded because web and
        // project root are different.
        $this->assertFileDoesNotExist("$stage_dir/$path");
      }
      else {
        // If the project root and web root are the same, unknown files will not
        // be excluded, so this path should exist in the stage directory.
        $this->assertFileExists("$stage_dir/$path");
      }
    }

    $stage->apply();
    // The excluded files should still be in the active directory.
    foreach ($unknown_files as $path) {
      $this->assertFileExists("$active_dir/$path");
    }
  }

  /**
   * Tests that the excluder can be disabled by a config flag.
   */
  public function testExcluderCanBeDisabled(): void {
    $this->createTestProjectForTemplate(TRUE);

    $project_root = $this->container->get(PathLocator::class)
      ->getProjectRoot();
    mkdir($project_root . '/unknown');
    touch($project_root . '/unknown/file.txt');

    $config = $this->config('package_manager.settings');
    $config->set('include_unknown_files_in_project_root', TRUE)->save();

    $stage = $this->createStage();
    $stage->create();
    $this->assertFileExists($stage->getSandboxDirectory() . '/unknown/file.txt');
    $stage->destroy();

    $config->set('include_unknown_files_in_project_root', FALSE)->save();
    $this->assertFileExists($project_root . '/unknown/file.txt');
    $stage->create();
    $this->assertFileDoesNotExist($stage->getSandboxDirectory() . '/unknown/file.txt');
  }

  /**
   * Tests that path repositories are included.
   */
  public function testPathRepositoriesAreIncluded(): void {
    $this->createTestProjectForTemplate(TRUE);

    $project_root = $this->container->get(PathLocator::class)
      ->getProjectRoot();
    $this->assertDirectoryExists($project_root . '/custom');

    $stage = $this->createStage();
    $stage->create();
    $this->assertDirectoryExists($stage->getSandboxDirectory() . '/custom');
    $stage->require(['ext-json:*']);
    $stage->apply();
    $this->assertDirectoryExists($project_root . '/custom');
  }

}
