<?php

use yiiunit\TestCase;
use yii\console\controllers\AssetController;

/**
 * Unit test for [[\yii\console\controllers\AssetController]].
 * @see AssetController
 */
class AssetControllerTest extends TestCase
{
	/**
	 * @var string path for the test files.
	 */
	protected $testFilePath = '';
	/**
	 * @var string test assets path.
	 */
	protected $testAssetsBasePath = '';

	public function setUp()
	{
		$this->testFilePath = Yii::getAlias('@yiiunit/runtime') . DIRECTORY_SEPARATOR . get_class($this);
		$this->createDir($this->testFilePath);
		$this->testAssetsBasePath = $this->testFilePath . DIRECTORY_SEPARATOR . 'assets';
		$this->createDir($this->testAssetsBasePath);
	}

	public function tearDown()
	{
		$this->removeDir($this->testFilePath);
	}

	/**
	 * Creates directory.
	 * @param $dirName directory full name.
	 */
	protected function createDir($dirName)
	{
		if (!file_exists($dirName)) {
			mkdir($dirName, 0777, true);
		}
	}

	/**
	 * Removes directory.
	 * @param $dirName directory full name
	 */
	protected function removeDir($dirName)
	{
		if (!empty($dirName) && file_exists($dirName)) {
			exec("rm -rf {$dirName}");
		}
	}

	/**
	 * Creates test asset controller instance.
	 * @return AssetController
	 */
	protected function createAssetController()
	{
		$module = $this->getMock('yii\\base\\Module', array('fake'), array('console'));
		$assetController = new AssetController('asset', $module);
		$assetController->interactive = false;
		$assetController->jsCompressor = 'cp {from} {to}';
		$assetController->cssCompressor = 'cp {from} {to}';
		return $assetController;
	}

	/**
	 * Emulates running of the asset controller action.
	 * @param string $actionId id of action to be run.
	 * @param array $args action arguments.
	 * @return string command output.
	 */
	protected function runAssetControllerAction($actionId, array $args=array())
	{
		$controller = $this->createAssetController();
		ob_start();
		ob_implicit_flush(false);
		$params = array(
			\yii\console\Request::ANONYMOUS_PARAMS => $args
		);
		$controller->run($actionId, $params);
		return ob_get_clean();
	}

	/**
	 * Creates test compress config.
	 * @param array[] $bundles asset bundles config.
	 * @return array config array.
	 */
	protected function createCompressConfig(array $bundles)
	{
		$baseUrl = '/test';
		$config = array(
			'bundles' => $this->createBundleConfig($bundles),
			'targets' => array(
				'all' => array(
					'basePath' => $this->testAssetsBasePath,
					'baseUrl' => $baseUrl,
					'js' => 'all.js',
					'css' => 'all.css',
				),
			),
			'assetManager' => array(
				'basePath' => $this->testAssetsBasePath,
				'baseUrl' => '',
			),
		);
		return $config;
	}

	/**
	 * Creates test bundle configuration.
	 * @param array[] $bundles asset bundles config.
	 * @return array bundle config.
	 */
	protected function createBundleConfig(array $bundles)
	{
		foreach ($bundles as $name => $config) {
			if (!array_key_exists('basePath', $config)) {
				$bundles[$name]['basePath'] = $this->testFilePath;
			}
			if (!array_key_exists('baseUrl', $config)) {
				$bundles[$name]['baseUrl'] = '';
			}
		}
		return $bundles;
	}

	/**
	 * Creates test compress config file.
	 * @param string $fileName output file name.
	 * @param array[] $bundles asset bundles config.
	 * @throws Exception on failure.
	 */
	protected function createCompressConfigFile($fileName, array $bundles)
	{
		$content = '<?php return '.var_export($this->createCompressConfig($bundles), true).';';
		if (file_put_contents($fileName, $content) <= 0) {
			throw new \Exception("Unable to create file '{$fileName}'!");
		}
	}

	/**
	 * Creates test asset file.
	 * @param string $fileRelativeName file name relative to [[testFilePath]]
	 * @param string $content file content
	 * @throws Exception on failure.
	 */
	protected function createAssetSourceFile($fileRelativeName, $content)
	{
		$fileFullName = $this->testFilePath.DIRECTORY_SEPARATOR.$fileRelativeName;
		$this->createDir(dirname($fileFullName));
		if (file_put_contents($fileFullName, $content)<=0) {
			throw new \Exception("Unable to create file '{$fileFullName}'!");
		}
	}

	/**
	 * Creates a list of asset source files.
	 * @param array $files assert source files in format: file/relative/name => fileContent
	 */
	protected function createAssertSourceFiles(array $files)
	{
		foreach ($files as $name => $content) {
			$this->createAssetSourceFile($name, $content);
		}
	}

	/**
	 * Invokes the asset controller method even if it is protected.
	 * @param string $methodName name of the method to be invoked.
	 * @param array $args method arguments.
	 * @return mixed method invoke result.
	 */
	protected function invokeAssetControllerMethod($methodName, array $args = array())
	{
		$controller = $this->createAssetController();
		$controllerClassReflection = new ReflectionClass(get_class($controller));
		$methodReflection = $controllerClassReflection->getMethod($methodName);
		$methodReflection->setAccessible(true);
		$result = $methodReflection->invokeArgs($controller, $args);
		$methodReflection->setAccessible(false);
		return $result;
	}

	// Tests :

	public function testActionTemplate()
	{
		$configFileName = $this->testFilePath . DIRECTORY_SEPARATOR . 'config.php';
		$this->runAssetControllerAction('template', array($configFileName));
		$this->assertTrue(file_exists($configFileName), 'Unable to create config file template!');
	}

	public function testActionCompress()
	{
		// Given :
		$cssFiles = array(
			'css/test_body.css' => 'body {
				padding-top: 20px;
				padding-bottom: 60px;
			}',
			'css/test_footer.css' => '.footer {
				margin: 20px;
				display: block;
			}',
		);
		$this->createAssertSourceFiles($cssFiles);

		$jsFiles = array(
			'js/test_alert.js' => "function test() {
				alert('Test message');
			}",
			'js/test_sum_ab.js' => "function sumAB(a, b) {
				return a + b;
			}",
		);
		$this->createAssertSourceFiles($jsFiles);

		$bundles = array(
			'app' => array(
				'css' => array_keys($cssFiles),
				'js' => array_keys($jsFiles),
				'depends' => array(
					'yii',
				),
			),
		);;
		$bundleFile = $this->testFilePath . DIRECTORY_SEPARATOR . 'bundle.php';

		$configFile = $this->testFilePath . DIRECTORY_SEPARATOR . 'config.php';
		$this->createCompressConfigFile($configFile, $bundles);

		// When :
		$this->runAssetControllerAction('compress', array($configFile, $bundleFile));

		// Then :
		$this->assertTrue(file_exists($bundleFile), 'Unable to create output bundle file!');

		$compressedCssFileName = $this->testAssetsBasePath . DIRECTORY_SEPARATOR . 'all.css';
		$this->assertTrue(file_exists($compressedCssFileName), 'Unable to compress CSS files!');
		$compressedJsFileName = $this->testAssetsBasePath . DIRECTORY_SEPARATOR . 'all.js';
		$this->assertTrue(file_exists($compressedJsFileName), 'Unable to compress JS files!');

		$compressedCssFileContent = file_get_contents($compressedCssFileName);
		foreach ($cssFiles as $name => $content) {
			$this->assertContains($content, $compressedCssFileContent, "Source of '{$name}' is missing in combined file!");
		}
		$compressedJsFileContent = file_get_contents($compressedJsFileName);
		foreach ($jsFiles as $name => $content) {
			$this->assertContains($content, $compressedJsFileContent, "Source of '{$name}' is missing in combined file!");
		}
	}

	/**
	 * Data provider for [[testAdjustCssUrl()]].
	 * @return array test data.
	 */
	public function adjustCssUrlDataProvider()
	{
		return array(
			array(
				'.test-class {background-image: url("test.png");}',
				'/test/base/path/assets/input',
				'/test/base/path/assets/output',
				'.test-class {background-image: url("../input/test.png");}',
			),
			array(
				'.test-class {background-image: url("../img/test.png");}',
				'/test/base/path/assets/input',
				'/test/base/path/assets/output',
				'.test-class {background-image: url("../input/img/test.png");}',
			),
		);
	}

	/**
	 * @dataProvider adjustCssUrlDataProvider
	 *
	 * @param $cssContent
	 * @param $inputFilePath
	 * @param $outputFilePath
	 * @param $expectedCssContent
	 */
	public function testAdjustCssUrl($cssContent, $inputFilePath, $outputFilePath, $expectedCssContent)
	{
		$adjustedCssContent = $this->invokeAssetControllerMethod('adjustCssUrl', array($cssContent, $inputFilePath, $outputFilePath));

		$this->assertEquals($expectedCssContent, $adjustedCssContent, 'Unable to adjust CSS correctly!');
	}
}