class ComposerProjectTemplatesTest

class ComposerProjectTemplatesTest extends ComposerBuildTestBase {
    
    /**
     * The minimum stability requirement for dependencies.
     *
     * @see https://getcomposer.org/doc/04-schema.md#minimum-stability
     */
    protected const MINIMUM_STABILITY = 'stable';
    
    /**
     * The order of stability strings from least stable to most stable.
     *
     * This only includes normalized stability strings: i.e., ones that are
     * returned by \Composer\Semver\VersionParser::parseStability().
     */
    protected const STABILITY_ORDER = [
        'dev',
        'alpha',
        'beta',
        'RC',
        'stable',
    ];
    
    /**
     * Get Composer items that we want to be path repos, from within a directory.
     *
     * @param string $workspace_directory
     *   The full path to the workspace directory.
     * @param string $subdir
     *   The subdirectory to search under composer/.
     *
     * @return string[]
     *   Array of paths, indexed by package name.
     */
    public function getPathReposForType($workspace_directory, $subdir) {
        // Find the Composer items that we want to be path repos.
        
        /** @var \SplFileInfo[] $path_repos */
        $path_repos = Composer::composerSubprojectPaths($workspace_directory, $subdir);
        $data = [];
        foreach ($path_repos as $path_repo) {
            $json_file = new JsonFile($path_repo->getPathname());
            $json = $json_file->read();
            $data[$json['name']] = $path_repo->getPath();
        }
        return $data;
    }
    public function provideTemplateCreateProject() {
        return [
            'recommended-project' => [
                'drupal/recommended-project',
                'composer/Template/RecommendedProject',
                '/web',
            ],
            'legacy-project' => [
                'drupal/legacy-project',
                'composer/Template/LegacyProject',
                '',
            ],
        ];
    }
    
    /**
     * Make sure that static::MINIMUM_STABILITY is sufficiently strict.
     */
    public function testMinimumStabilityStrictness() {
        // Ensure that static::MINIMUM_STABILITY is not less stable than the
        // current core stability. For example, if we've already released a beta on
        // the branch, ensure that we no longer allow alpha dependencies.
        $this->assertGreaterThanOrEqual(array_search($this->getCoreStability(), static::STABILITY_ORDER), array_search(static::MINIMUM_STABILITY, static::STABILITY_ORDER));
        // Ensure that static::MINIMUM_STABILITY is the same as the least stable
        // dependency.
        // - We can't set it stricter than our least stable dependency.
        // - We don't want to set it looser than we need to, because we don't want
        //   to in the future accidentally commit a dependency that regresses our
        //   actual stability requirement without us explicitly changing this
        //   constant.
        $root = $this->getDrupalRoot();
        $process = $this->executeCommand("composer --working-dir={$root} info --format=json");
        $this->assertCommandSuccessful();
        $installed = json_decode($process->getOutput(), TRUE);
        // A lookup of the numerical position of each of the stability terms.
        $stability_order_indexes = array_flip(static::STABILITY_ORDER);
        $minimum_stability_order_index = $stability_order_indexes[static::MINIMUM_STABILITY];
        $exclude = [
            'drupal/core',
            'drupal/core-project-message',
            'drupal/core-vendor-hardening',
        ];
        foreach ($installed['installed'] as $project) {
            // Exclude dependencies that are required with "self.version", since
            // those stabilities will automatically match the corresponding Drupal
            // release.
            if (in_array($project['name'], $exclude, TRUE)) {
                continue;
            }
            $project_stability = VersionParser::parseStability($project['version']);
            $project_stability_order_index = $stability_order_indexes[$project_stability];
            $project_stabilities[$project['name']] = $project_stability;
            $this->assertGreaterThanOrEqual($minimum_stability_order_index, $project_stability_order_index, sprintf("Dependency %s with stability %s does not meet minimum stability %s.", $project['name'], $project_stability, static::MINIMUM_STABILITY));
        }
        // At least one project should be at the minimum stability.
        $this->assertContains(static::MINIMUM_STABILITY, $project_stabilities);
    }
    
    /**
     * Make sure we've accounted for all the templates.
     */
    public function testVerifyTemplateTestProviderIsAccurate() {
        $root = $this->getDrupalRoot();
        $data = $this->provideTemplateCreateProject();
        // Find all the templates.
        $template_files = Composer::composerSubprojectPaths($root, 'Template');
        $this->assertSameSize($template_files, $data);
        // We could have the same number of templates but different names.
        $template_data = [];
        foreach ($data as $data_name => $data_value) {
            $template_data[$data_value[0]] = $data_name;
        }
        
        /** @var \SplFileInfo $file */
        foreach ($template_files as $file) {
            $json_file = new JsonFile($file->getPathname());
            $json = $json_file->read();
            $this->assertArrayHasKey('name', $json);
            // Assert that the template name is in the project created
            // from the template.
            $this->assertArrayHasKey($json['name'], $template_data);
        }
    }
    
    /**
     * @dataProvider provideTemplateCreateProject
     */
    public function testTemplateCreateProject($project, $package_dir, $docroot_dir) {
        // Make a working COMPOSER_HOME directory for setting global composer config
        $composer_home = $this->getWorkspaceDirectory() . '/composer-home';
        mkdir($composer_home);
        // Create an empty global composer.json file, just to avoid warnings.
        file_put_contents("{$composer_home}/composer.json", '{}');
        // Disable packagist globally (but only in our own custom COMPOSER_HOME).
        // It is necessary to do this globally rather than in our SUT composer.json
        // in order to ensure that Packagist is disabled during the
        // `composer create-project` command.
        $this->executeCommand("COMPOSER_HOME={$composer_home} composer config --no-interaction --global repo.packagist false");
        $this->assertCommandSuccessful();
        // Create a "Composer"-type repository containing one entry for every
        // package in the vendor directory.
        $vendor_packages_path = $this->getWorkspaceDirectory() . '/vendor_packages/packages.json';
        $this->makeVendorPackage($vendor_packages_path);
        // Make a copy of the code to alter in the workspace directory.
        $this->copyCodebase();
        // Tests are typically run on "-dev" versions, but we want to simulate
        // running them on a tagged release at the same stability as specified in
        // static::MINIMUM_STABILITY, in order to verify that everything will work
        // if/when we make such a release.
        $simulated_core_version = \Drupal::VERSION;
        $simulated_core_version_suffix = static::MINIMUM_STABILITY === 'stable' ? '' : '-' . static::MINIMUM_STABILITY . '99';
        $simulated_core_version = str_replace('-dev', $simulated_core_version_suffix, $simulated_core_version);
        Composer::setDrupalVersion($this->getWorkspaceDirectory(), $simulated_core_version);
        $this->assertDrupalVersion($simulated_core_version, $this->getWorkspaceDirectory());
        // Remove the packages.drupal.org entry (and any other custom repository)
        // from the SUT's repositories section. There is no way to do this via
        // `composer config --unset`, so we read and rewrite composer.json.
        $composer_json_path = $this->getWorkspaceDirectory() . "/{$package_dir}/composer.json";
        $composer_json = json_decode(file_get_contents($composer_json_path), TRUE);
        unset($composer_json['repositories']);
        $json = json_encode($composer_json, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
        file_put_contents($composer_json_path, $json);
        // Set up the template to use our path repos. Inclusion of metapackages is
        // reported differently, so we load up a separate set for them.
        $metapackage_path_repos = $this->getPathReposForType($this->getWorkspaceDirectory(), 'Metapackage');
        $this->assertArrayHasKey('drupal/core-recommended', $metapackage_path_repos);
        $path_repos = array_merge($metapackage_path_repos, $this->getPathReposForType($this->getWorkspaceDirectory(), 'Plugin'));
        // Always add drupal/core as a path repo.
        $path_repos['drupal/core'] = $this->getWorkspaceDirectory() . '/core';
        foreach ($path_repos as $name => $path) {
            $this->executeCommand("composer config --no-interaction repositories.{$name} path {$path}", $package_dir);
            $this->assertCommandSuccessful();
        }
        // Change drupal/core-recommended to require the simulated version of
        // drupal/core.
        $core_recommended_dir = 'composer/Metapackage/CoreRecommended';
        $this->executeCommand("composer remove --no-interaction drupal/core --no-update", $core_recommended_dir);
        $this->assertCommandSuccessful();
        $this->executeCommand("composer require --no-interaction drupal/core:^{$simulated_core_version} --no-update", $core_recommended_dir);
        $this->assertCommandSuccessful();
        // Add our vendor package repository to our SUT's repositories section.
        // Call it "local" (although the name does not matter).
        $this->executeCommand("composer config --no-interaction repositories.local composer file://" . $vendor_packages_path, $package_dir);
        $this->assertCommandSuccessful();
        $repository_path = $this->getWorkspaceDirectory() . '/test_repository/packages.json';
        $this->makeTestPackage($repository_path, $simulated_core_version);
        $installed_composer_json = $this->getWorkspaceDirectory() . '/testproject/composer.json';
        $autoloader = $this->getWorkspaceDirectory() . '/testproject' . $docroot_dir . '/autoload.php';
        $this->assertFileDoesNotExist($autoloader);
        $this->executeCommand("COMPOSER_HOME={$composer_home} COMPOSER_ROOT_VERSION={$simulated_core_version} composer create-project --no-ansi {$project} testproject {$simulated_core_version} -vvv --repository {$repository_path}");
        $this->assertCommandSuccessful();
        // Check the output of the project creation for the absence of warnings
        // about any non-allowed composer plugins.
        // Note: There are different warnings for unallowed composer plugins
        // depending on running in non-interactive mode or not. It seems the Drupal
        // CI environment always forces composer commands to run in the
        // non-interactive mode. The only thing these messages have in common is the
        // following string.
        $this->assertErrorOutputNotContains('See https://getcomposer.org/allow-plugins');
        // Ensure we used the project from our codebase.
        $this->assertErrorOutputContains("Installing {$project} ({$simulated_core_version}): Symlinking from {$package_dir}");
        // Ensure that we used drupal/core from our codebase. This probably means
        // that drupal/core-recommended was added successfully by the project.
        $this->assertErrorOutputContains("Installing drupal/core ({$simulated_core_version}): Symlinking from");
        // Verify that there is an autoloader. This is written by the scaffold
        // plugin, so its existence assures us that scaffolding happened.
        $this->assertFileExists($autoloader);
        // Verify that the minimum stability in the installed composer.json file
        // matches the stability of the simulated core version.
        $this->assertFileExists($installed_composer_json);
        $composer_json_contents = file_get_contents($installed_composer_json);
        $this->assertStringContainsString('"minimum-stability": "' . static::MINIMUM_STABILITY . '"', $composer_json_contents);
        // In order to verify that Composer used the path repos for our project, we
        // have to get the requirements from the project composer.json so we can
        // reconcile our expectations.
        $template_json_file = $this->getWorkspaceDirectory() . '/' . $package_dir . '/composer.json';
        $this->assertFileExists($template_json_file);
        $json_file = new JsonFile($template_json_file);
        $template_json = $json_file->read();
        // Get the require and require-dev information, and ensure that our
        // requirements are not erroneously empty.
        $this->assertNotEmpty($require = array_merge($template_json['require'] ?? [], $template_json['require-dev'] ?? []));
        // Verify that path repo packages were installed.
        $path_repos = array_keys($path_repos);
        foreach (array_keys($require) as $package_name) {
            if (in_array($package_name, $path_repos)) {
                // Metapackages do not report that they were installed as symlinks, but
                // we still must check that their installed version matches
                // COMPOSER_CORE_VERSION.
                if (array_key_exists($package_name, $metapackage_path_repos)) {
                    $this->assertErrorOutputContains("Installing {$package_name} ({$simulated_core_version})");
                }
                else {
                    $this->assertErrorOutputContains("Installing {$package_name} ({$simulated_core_version}): Symlinking from");
                }
            }
        }
    }
    
    /**
     * Creates a test package that points to the templates.
     *
     * @param string $repository_path
     *   The path where to create the test package.
     * @param string $version
     *   The version under test.
     */
    protected function makeTestPackage($repository_path, $version) {
        $json = <<<JSON
{
  "packages": {
    "drupal/recommended-project": {
      "{<span class="php-variable">$version</span>}": {
        "name": "drupal/recommended-project",
        "dist": {
          "type": "path",
          "url": "composer/Template/RecommendedProject"
        },
        "type": "project",
        "version": "{<span class="php-variable">$version</span>}"
      }
    },
    "drupal/legacy-project": {
      "{<span class="php-variable">$version</span>}": {
        "name": "drupal/legacy-project",
        "dist": {
          "type": "path",
          "url": "composer/Template/LegacyProject"
        },
        "type": "project",
        "version": "{<span class="php-variable">$version</span>}"
      }
    }
  }
}
JSON;
        mkdir(dirname($repository_path));
        file_put_contents($repository_path, $json);
    }
    
    /**
     * Creates a test package that points to all the projects in vendor.
     *
     * @param string $repository_path
     *   The path where to create the test package.
     */
    protected function makeVendorPackage($repository_path) {
        $root = $this->getDrupalRoot();
        $process = $this->executeCommand("composer --working-dir={$root} info --format=json");
        $this->assertCommandSuccessful();
        $installed = json_decode($process->getOutput(), TRUE);
        // Build out package definitions for everything installed in
        // the vendor directory.
        $packages = [];
        foreach ($installed['installed'] as $project) {
            $name = $project['name'];
            $version = $project['version'];
            $path = "vendor/{$name}";
            $full_path = "{$root}/{$path}";
            // We are building a set of path repositories to projects in the vendor
            // directory, so we will skip any project that does not exist in vendor.
            // Also skip the projects that are symlinked in vendor. These are in our
            // metapackage. They will be represented as path repositories in the test
            // project's composer.json.
            if (is_dir($full_path) && !is_link($full_path)) {
                $packages['packages'][$name] = [
                    $version => [
                        "name" => $name,
                        "dist" => [
                            "type" => "path",
                            "url" => $full_path,
                        ],
                        "version" => $version,
                    ],
                ];
                // Ensure composer plugins are registered correctly.
                $package_json = json_decode(file_get_contents($full_path . '/composer.json'), TRUE);
                if (isset($package_json['type']) && $package_json['type'] === 'composer-plugin') {
                    $packages['packages'][$name][$version]['type'] = $package_json['type'];
                    $packages['packages'][$name][$version]['require'] = $package_json['require'];
                    $packages['packages'][$name][$version]['extra'] = $package_json['extra'];
                    if (isset($package_json['autoload'])) {
                        $packages['packages'][$name][$version]['autoload'] = $package_json['autoload'];
                    }
                }
            }
        }
        $json = json_encode($packages, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
        mkdir(dirname($repository_path));
        file_put_contents($repository_path, $json);
    }
    
    /**
     * Returns the stability of the current core version.
     *
     * If the current core version is a tagged release (not a "-dev" version),
     * this returns the stability of that version.
     *
     * If the current core version is a "-dev" version, but not a "x.y.0-dev"
     * version, this returns "stable", because it means that the corresponding
     * "x.y.0" has already been released, and only stable changes are now
     * permitted on the branch.
     *
     * If the current core version is a "x.y.0-dev" version, then this returns
     * the stability of the latest tag that matches "x.y.0-*". For example, if
     * we've already released "x.y.0-alpha1" but have not yet released
     * "x.y.0-beta1", then the current stability is "alpha". If there aren't any
     * matching tags, this returns "dev", because it means that an "alpha1" has
     * not yet been released.
     *
     * @return string
     *   One of: "dev", "alpha", "beta", "RC", "stable".
     */
    protected function getCoreStability() {
        $version = \Drupal::VERSION;
        $stability = VersionParser::parseStability($version);
        if ($stability === 'dev') {
            // Strip off "-dev";
            $version_towards = substr($version, 0, -4);
            if (substr($version_towards, -2) !== '.0') {
                // If the current version is developing towards an x.y.z release where
                // z is not 0, it means that the x.y.0 has already been released, and
                // only stable changes are permitted on the branch.
                $stability = 'stable';
            }
            else {
                // If the current version is developing towards an x.y.0 release, there
                // might be tagged pre-releases. "git describe" identifies the latest
                // one.
                $root = $this->getDrupalRoot();
                $process = $this->executeCommand("git -C \"{$root}\" describe --abbrev=0 --match=\"{$version_towards}-*\"");
                // If there aren't any tagged pre-releases for this version yet, return
                // 'dev'. Ensure that any other error from "git describe" causes a test
                // failure.
                if (!$process->isSuccessful()) {
                    $this->assertErrorOutputContains('No names found, cannot describe anything.');
                    return 'dev';
                }
                // We expect a pre-release, because:
                // - A tag should not be of "dev" stability.
                // - After a "stable" release is made, \Drupal::VERSION is incremented,
                //   so there should not be a stable release on that new version.
                $stability = VersionParser::parseStability(trim($process->getOutput()));
                $this->assertContains($stability, [
                    'alpha',
                    'beta',
                    'RC',
                ]);
            }
        }
        return $stability;
    }

}