<?php

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

/**
 * Unit test for [[\yii\console\controllers\MessageController]].
 * @see MessageController
 *
 * @group console
 */
class MessageControllerTest extends TestCase
{
	protected $sourcePath = '';
	protected $messagePath = '';
	protected $configFileName = '';

	public function setUp()
	{
		$this->mockApplication();
		$this->sourcePath = Yii::getAlias('@yiiunit/runtime/test_source');
		$this->createDir($this->sourcePath);
		if (!file_exists($this->sourcePath)) {
			$this->markTestIncomplete('Unit tests runtime directory should have writable permissions!');
		}
		$this->messagePath = Yii::getAlias('@yiiunit/runtime/test_messages');
		$this->createDir($this->messagePath);
		$this->configFileName = Yii::getAlias('@yiiunit/runtime') . DIRECTORY_SEPARATOR . 'message_controller_test_config.php';
	}

	public function tearDown()
	{
		$this->removeDir($this->sourcePath);
		$this->removeDir($this->messagePath);
		if (file_exists($this->configFileName)) {
			unlink($this->configFileName);
		}
	}

	/**
	 * 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)) {
			$this->removeFileSystemObject($dirName);
		}
	}

	/**
	 * Removes file system object: directory or file.
	 * @param string $fileSystemObjectFullName file system object full name.
	 */
	protected function removeFileSystemObject($fileSystemObjectFullName)
	{
		if (!is_dir($fileSystemObjectFullName)) {
			unlink($fileSystemObjectFullName);
		} else {
			$dirHandle = opendir($fileSystemObjectFullName);
			while (($fileSystemObjectName = readdir($dirHandle)) !== false) {
				if ($fileSystemObjectName==='.' || $fileSystemObjectName==='..') {
					continue;
				}
				$this->removeFileSystemObject($fileSystemObjectFullName . DIRECTORY_SEPARATOR . $fileSystemObjectName);
			}
			closedir($dirHandle);
			rmdir($fileSystemObjectFullName);
		}
	}

	/**
	 * Creates test message controller instance.
	 * @return MessageController message command instance.
	 */
	protected function createMessageController()
	{
		$module = $this->getMock('yii\\base\\Module', ['fake'], ['console']);
		$messageController = new MessageController('message', $module);
		$messageController->interactive = false;
		return $messageController;
	}

	/**
	 * Emulates running of the message controller action.
	 * @param string $actionId id of action to be run.
	 * @param array $args action arguments.
	 * @return string command output.
	 */
	protected function runMessageControllerAction($actionId, array $args = [])
	{
		$controller = $this->createMessageController();
		ob_start();
		ob_implicit_flush(false);
		$controller->run($actionId, $args);
		return ob_get_clean();
	}

	/**
	 * Creates message command config file at {@link configFileName}
	 * @param array $config message command config.
	 */
	protected function composeConfigFile(array $config)
	{
		if (file_exists($this->configFileName)) {
			unlink($this->configFileName);
		}
		$fileContent = '<?php return ' . var_export($config, true) . ';';
		file_put_contents($this->configFileName, $fileContent);
	}

	/**
	 * Creates source file with given content
	 * @param string $content file content
	 * @param string|null $name file self name
	 */
	protected function createSourceFile($content, $name = null)
	{
		if (empty($name)) {
			$name = md5(uniqid()) . '.php';
		}
		file_put_contents($this->sourcePath . DIRECTORY_SEPARATOR . $name, $content);
	}

	/**
	 * Creates message file with given messages.
	 * @param string $name file name
	 * @param array $messages messages.
	 */
	protected function createMessageFile($name, array $messages = [])
	{
		$fileName = $this->messagePath . DIRECTORY_SEPARATOR . $name;
		if (file_exists($fileName)) {
			unlink($fileName);
		} else {
			$dirName = dirname($fileName);
			if (!file_exists($dirName)) {
				mkdir($dirName, 0777, true);
			}
		}
		$fileContent = '<?php return ' . var_export($messages, true) . ';';
		file_put_contents($fileName, $fileContent);
	}

	// Tests:

	public function testActionConfig()
	{
		$configFileName = $this->configFileName;
		$this->runMessageControllerAction('config', [$configFileName]);
		$this->assertTrue(file_exists($configFileName), 'Unable to create config file template!');
	}

	public function testConfigFileNotExist()
	{
		$this->setExpectedException('yii\\console\\Exception');
		$this->runMessageControllerAction('extract', ['not_existing_file.php']);
	}

	public function testCreateTranslation()
	{
		$language = 'en';

		$category = 'test_category';
		$message = 'test message';
		$sourceFileContent = "Yii::t('{$category}', '{$message}')";
		$this->createSourceFile($sourceFileContent);

		$this->composeConfigFile([
			'languages' => [$language],
			'sourcePath' => $this->sourcePath,
			'messagePath' => $this->messagePath,
		]);
		$this->runMessageControllerAction('extract', [$this->configFileName]);

		$this->assertTrue(file_exists($this->messagePath . DIRECTORY_SEPARATOR . $language), 'No language dir created!');
		$messageFileName = $this->messagePath . DIRECTORY_SEPARATOR . $language . DIRECTORY_SEPARATOR . $category . '.php';
		$this->assertTrue(file_exists($messageFileName), 'No message file created!');
		$messages = require($messageFileName);
		$this->assertTrue(is_array($messages), 'Unable to compose messages!');
		$this->assertTrue(array_key_exists($message, $messages), 'Source message is missing!');
	}

	/**
	 * @depends testCreateTranslation
	 */
	public function testNothingNew()
	{
		$language = 'en';

		$category = 'test_category';
		$message = 'test message';
		$sourceFileContent = "Yii::t('{$category}', '{$message}')";
		$this->createSourceFile($sourceFileContent);

		$this->composeConfigFile([
			'languages' => [$language],
			'sourcePath' => $this->sourcePath,
			'messagePath' => $this->messagePath,
		]);
		$this->runMessageControllerAction('extract', [$this->configFileName]);

		$messageFileName = $this->messagePath . DIRECTORY_SEPARATOR . $language . DIRECTORY_SEPARATOR . $category . '.php';

		// check file not overwritten:
		$messageFileContent = file_get_contents($messageFileName);
		$messageFileContent .= '// some not generated by command content';
		file_put_contents($messageFileName, $messageFileContent);

		$this->runMessageControllerAction('extract', [$this->configFileName]);

		$this->assertEquals($messageFileContent, file_get_contents($messageFileName));
	}

	/**
	 * @depends testCreateTranslation
	 */
	public function testMerge()
	{
		$language = 'en';
		$category = 'test_category';
		$messageFileName = $language . DIRECTORY_SEPARATOR . $category . '.php';

		$existingMessage = 'test existing message';
		$existingMessageContent = 'test existing message content';
		$this->createMessageFile($messageFileName, [
			$existingMessage => $existingMessageContent
		]);

		$newMessage = 'test new message';
		$sourceFileContent = "Yii::t('{$category}', '{$existingMessage}')";
		$sourceFileContent .= "Yii::t('{$category}', '{$newMessage}')";
		$this->createSourceFile($sourceFileContent);

		$this->composeConfigFile([
			'languages' => [$language],
			'sourcePath' => $this->sourcePath,
			'messagePath' => $this->messagePath,
			'overwrite' => true,
		]);
		$this->runMessageControllerAction('extract', [$this->configFileName]);

		$messages = require($this->messagePath . DIRECTORY_SEPARATOR . $messageFileName);
		$this->assertTrue(array_key_exists($newMessage, $messages), 'Unable to add new message!');
		$this->assertTrue(array_key_exists($existingMessage, $messages), 'Unable to keep existing message!');
		$this->assertEquals('', $messages[$newMessage], 'Wrong new message content!');
		$this->assertEquals($existingMessageContent, $messages[$existingMessage], 'Unable to keep existing message content!');
	}

	/**
	 * @depends testMerge
	 */
	public function testNoLongerNeedTranslation()
	{
		$language = 'en';
		$category = 'test_category';
		$messageFileName = $language . DIRECTORY_SEPARATOR . $category . '.php';

		$oldMessage = 'test old message';
		$oldMessageContent = 'test old message content';
		$this->createMessageFile($messageFileName, [
			$oldMessage => $oldMessageContent
		]);

		$sourceFileContent = "Yii::t('{$category}', 'some new message')";
		$this->createSourceFile($sourceFileContent);

		$this->composeConfigFile([
			'languages' => [$language],
			'sourcePath' => $this->sourcePath,
			'messagePath' => $this->messagePath,
			'overwrite' => true,
			'removeUnused' => false,
		]);
		$this->runMessageControllerAction('extract', [$this->configFileName]);

		$messages = require($this->messagePath . DIRECTORY_SEPARATOR . $messageFileName);

		$this->assertTrue(array_key_exists($oldMessage, $messages), 'No longer needed message removed!');
		$this->assertEquals('@@' . $oldMessageContent . '@@', $messages[$oldMessage], 'No longer needed message content does not marked properly!');
	}

	/**
	 * @depends testMerge
	 */
	public function testMergeWithContentZero()
	{
		$language = 'en';
		$category = 'test_category';
		$messageFileName = $language . DIRECTORY_SEPARATOR . $category . '.php';

		$zeroMessage = 'test zero message';
		$zeroMessageContent = '0';
		$falseMessage = 'test false message';
		$falseMessageContent = 'false';
		$this->createMessageFile($messageFileName, [
			$zeroMessage => $zeroMessageContent,
			$falseMessage => $falseMessageContent,
		]);

		$newMessage = 'test new message';
		$sourceFileContent = "Yii::t('{$category}', '{$zeroMessage}')";
		$sourceFileContent .= "Yii::t('{$category}', '{$falseMessage}')";
		$sourceFileContent .= "Yii::t('{$category}', '{$newMessage}')";
		$this->createSourceFile($sourceFileContent);

		$this->composeConfigFile([
			'languages' => [$language],
			'sourcePath' => $this->sourcePath,
			'messagePath' => $this->messagePath,
			'overwrite' => true,
		]);
		$this->runMessageControllerAction('extract', [$this->configFileName]);

		$messages = require($this->messagePath . DIRECTORY_SEPARATOR . $messageFileName);
		$this->assertTrue($zeroMessageContent === $messages[$zeroMessage], 'Message content "0" is lost!');
		$this->assertTrue($falseMessageContent === $messages[$falseMessage], 'Message content "false" is lost!');
	}

	/**
	 * @depends testCreateTranslation
	 */
	public function testMultiplyTranslators()
	{
		$language = 'en';
		$category = 'test_category';

		$translators = [
			'Yii::t',
			'Custom::translate',
		];

		$sourceMessages = [
			'first message',
			'second message',
		];
		$sourceFileContent = '';
		foreach ($sourceMessages as $key => $message) {
			$sourceFileContent .= $translators[$key] . "('{$category}', '{$message}');\n";
		}
		$this->createSourceFile($sourceFileContent);

		$this->composeConfigFile([
			'languages' => [$language],
			'sourcePath' => $this->sourcePath,
			'messagePath' => $this->messagePath,
			'translator' => $translators,
		]);
		$this->runMessageControllerAction('extract', [$this->configFileName]);

		$messageFileName = $this->messagePath . DIRECTORY_SEPARATOR . $language . DIRECTORY_SEPARATOR . $category . '.php';
		$messages = require($messageFileName);

		foreach ($sourceMessages as $sourceMessage) {
			$this->assertTrue(array_key_exists($sourceMessage, $messages));
		}
	}
}