class ComposerIntegrationTest

class ComposerIntegrationTest extends UnitTestCase {
    use ComposerIntegrationTrait;
    
    /**
     * Tests composer.lock content-hash.
     */
    public function testComposerLockHash() {
        $content_hash = self::getContentHash(file_get_contents($this->root . '/composer.json'));
        $lock = json_decode(file_get_contents($this->root . '/composer.lock'), TRUE);
        $this->assertSame($content_hash, $lock['content-hash']);
        // @see \Composer\Repository\PathRepository::initialize()
        $core_lock_file_hash = '';
        $options = [];
        foreach ($lock['packages'] as $package) {
            if ($package['name'] === 'drupal/core') {
                $core_lock_file_hash = $package['dist']['reference'];
                $options = $package['transport-options'] ?? [];
                break;
            }
        }
        $core_content_hash = sha1(file_get_contents($this->root . '/core/composer.json') . serialize($options));
        $this->assertSame($core_content_hash, $core_lock_file_hash);
    }
    
    /**
     * Tests composer.json versions.
     *
     * @param string $path
     *   Path to a composer.json to test.
     *
     * @dataProvider providerTestComposerJson
     */
    public function testComposerTilde($path) {
        $content = json_decode(file_get_contents($path), TRUE);
        $composer_keys = array_intersect([
            'require',
            'require-dev',
        ], array_keys($content));
        if (empty($composer_keys)) {
            $this->markTestSkipped("{$path} has no keys to test");
        }
        foreach ($composer_keys as $composer_key) {
            foreach ($content[$composer_key] as $dependency => $version) {
                // We allow tildes if the dependency is a Symfony component.
                // @see https://www.drupal.org/node/2887000
                if (strpos($dependency, 'symfony/') === 0) {
                    continue;
                }
                $this->assertStringNotContainsString('~', $version, "Dependency {$dependency} in {$path} contains a tilde, use a caret.");
            }
        }
    }
    
    /**
     * Data provider for all the composer.json provided by Drupal core.
     *
     * @return array
     */
    public function providerTestComposerJson() {
        $data = [];
        $composer_json_finder = $this->getComposerJsonFinder(realpath(__DIR__ . '/../../../../'));
        foreach ($composer_json_finder->getIterator() as $composer_json) {
            $data[] = [
                $composer_json->getPathname(),
            ];
        }
        return $data;
    }
    
    /**
     * Tests core's composer.json replace section.
     *
     * Verify that all core modules are also listed in the 'replace' section of
     * core's composer.json.
     */
    public function testAllModulesReplaced() {
        // Assemble a path to core modules.
        $module_path = $this->root . '/core/modules';
        // Grab the 'replace' section of the core composer.json file.
        $json = json_decode(file_get_contents($this->root . '/core/composer.json'));
        $composer_replace_packages = (array) $json->replace;
        // Get a list of all the files in the module path.
        $folders = scandir($module_path);
        // Make sure we only deal with directories that aren't . or ..
        $module_names = [];
        $discard = [
            '.',
            '..',
        ];
        foreach ($folders as $file_name) {
            if (!in_array($file_name, $discard) && is_dir($module_path . '/' . $file_name)) {
                $module_names[] = $file_name;
            }
        }
        // Assert that each core module has a corresponding 'replace' in
        // composer.json.
        foreach ($module_names as $module_name) {
            $this->assertArrayHasKey('drupal/' . $module_name, $composer_replace_packages, 'Unable to find ' . $module_name . ' in replace list of composer.json');
        }
    }
    
    /**
     * Data provider for the scaffold files test for Drupal core.
     *
     * @return array
     */
    public function providerTestExpectedScaffoldFiles() {
        return [
            [
                '.editorconfig',
                'assets/scaffold/files/editorconfig',
                '[project-root]',
            ],
            [
                '.gitattributes',
                'assets/scaffold/files/gitattributes',
                '[project-root]',
            ],
            [
                '.csslintrc',
                'assets/scaffold/files/csslintrc',
            ],
            [
                '.eslintignore',
                'assets/scaffold/files/eslintignore',
            ],
            [
                '.eslintrc.json',
                'assets/scaffold/files/eslintrc.json',
            ],
            [
                '.ht.router.php',
                'assets/scaffold/files/ht.router.php',
            ],
            [
                '.htaccess',
                'assets/scaffold/files/htaccess',
            ],
            [
                'example.gitignore',
                'assets/scaffold/files/example.gitignore',
            ],
            [
                'index.php',
                'assets/scaffold/files/index.php',
            ],
            [
                'INSTALL.txt',
                'assets/scaffold/files/drupal.INSTALL.txt',
            ],
            [
                'README.txt',
                'assets/scaffold/files/drupal.README.txt',
            ],
            [
                'robots.txt',
                'assets/scaffold/files/robots.txt',
            ],
            [
                'update.php',
                'assets/scaffold/files/update.php',
            ],
            [
                'web.config',
                'assets/scaffold/files/web.config',
            ],
            [
                'sites/README.txt',
                'assets/scaffold/files/sites.README.txt',
            ],
            [
                'sites/development.services.yml',
                'assets/scaffold/files/development.services.yml',
            ],
            [
                'sites/example.settings.local.php',
                'assets/scaffold/files/example.settings.local.php',
            ],
            [
                'sites/example.sites.php',
                'assets/scaffold/files/example.sites.php',
            ],
            [
                'sites/default/default.services.yml',
                'assets/scaffold/files/default.services.yml',
            ],
            [
                'sites/default/default.settings.php',
                'assets/scaffold/files/default.settings.php',
            ],
            [
                'modules/README.txt',
                'assets/scaffold/files/modules.README.txt',
            ],
            [
                'profiles/README.txt',
                'assets/scaffold/files/profiles.README.txt',
            ],
            [
                'themes/README.txt',
                'assets/scaffold/files/themes.README.txt',
            ],
        ];
    }
    
    /**
     * Tests core's composer.json extra drupal-scaffold file-mappings section.
     *
     * Verify that every file listed in file-mappings exists in its destination
     * path (mapping key) and also at its source path (mapping value), and that
     * both of these files have exactly the same content.
     *
     * In Drupal 9, the files at the destination path will be removed. For the
     * remainder of the Drupal 8 development cycle, these files will remain in
     * order to maintain backwards compatibility with sites based on the template
     * project drupal-composer/drupal-project.
     *
     * See https://www.drupal.org/project/drupal/issues/3075954
     *
     * @param string $destRelPath
     *   Path to scaffold file destination location
     * @param string $sourceRelPath
     *   Path to scaffold file source location
     * @param string $expectedDestination
     *   Named location to the destination path of the scaffold file
     *
     * @dataProvider providerTestExpectedScaffoldFiles
     */
    public function testExpectedScaffoldFiles($destRelPath, $sourceRelPath, $expectedDestination = '[web-root]') {
        // Grab the 'file-mapping' section of the core composer.json file.
        $json = json_decode(file_get_contents($this->root . '/core/composer.json'));
        $scaffold_file_mapping = (array) $json->extra->{'drupal-scaffold'}->{'file-mapping'};
        // Assert that the 'file-mapping' section has the expected entry.
        $this->assertArrayHasKey("{$expectedDestination}/{$destRelPath}", $scaffold_file_mapping);
        $this->assertEquals($sourceRelPath, $scaffold_file_mapping["{$expectedDestination}/{$destRelPath}"]);
        // Assert that the source file exists.
        $this->assertFileExists($this->root . '/core/' . $sourceRelPath);
        // Assert that the destination file exists and has the same contents as
        // the source file. Note that in Drupal 9, the destination file will be
        // removed.
        $this->assertFileExists($this->root . '/' . $destRelPath);
        $this->assertFileEquals($this->root . '/core/' . $sourceRelPath, $this->root . '/' . $destRelPath, 'Scaffold source and destination files must have the same contents.');
    }
    // @codingStandardsIgnoreStart
    
    /**
     * The following method is copied from \Composer\Package\Locker.
     *
     * @see https://github.com/composer/composer
     */
    
    /**
     * Returns the md5 hash of the sorted content of the composer file.
     *
     * @param string $composerFileContents The contents of the composer file.
     *
     * @return string
     */
    protected static function getContentHash($composerFileContents) {
        $content = json_decode($composerFileContents, true);
        $relevantKeys = array(
            'name',
            'version',
            'require',
            'require-dev',
            'conflict',
            'replace',
            'provide',
            'minimum-stability',
            'prefer-stable',
            'repositories',
            'extra',
        );
        $relevantContent = array();
        foreach (array_intersect($relevantKeys, array_keys($content)) as $key) {
            $relevantContent[$key] = $content[$key];
        }
        if (isset($content['config']['platform'])) {
            $relevantContent['config']['platform'] = $content['config']['platform'];
        }
        ksort($relevantContent);
        return md5(json_encode($relevantContent));
    }
    // @codingStandardsIgnoreEnd

}