<?php
/**
 * CakePHP(tm) <http://book.cakephp.org/2.0/en/development/testing.html>
 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://book.cakephp.org/2.0/en/development/testing.html CakePHP(tm) Tests
 * @since         1.2.0
 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 */
namespace Cake\Test\TestCase\Log;

use Cake\Core\App;
use Cake\Core\Configure;
use Cake\Core\Plugin;
use Cake\Log\Engine\FileLog;
use Cake\Log\Log;
use Cake\TestSuite\TestCase;

/**
 * LogTest class
 *
 */
class LogTest extends TestCase {

	public function setUp() {
		parent::setUp();
		Log::reset();
	}

	public function tearDown() {
		parent::tearDown();
		Log::reset();
	}

/**
 * test importing loggers from app/libs and plugins.
 *
 * @return void
 */
	public function testImportingLoggers() {
		Configure::write('App.namespace', 'TestApp');
		Plugin::load('TestPlugin');

		Log::config('libtest', [
			'engine' => 'TestApp'
		]);
		Log::config('plugintest', [
			'engine' => 'TestPlugin.TestPlugin'
		]);

		$result = Log::engine('libtest');
		$this->assertInstanceOf('TestApp\Log\Engine\TestAppLog', $result);
		$this->assertContains('libtest', Log::configured());

		$result = Log::engine('plugintest');
		$this->assertInstanceOf('TestPlugin\Log\Engine\TestPluginLog', $result);
		$this->assertContains('libtest', Log::configured());
		$this->assertContains('plugintest', Log::configured());

		Log::write(LOG_INFO, 'TestPluginLog is not a BaseLog descendant');

		Plugin::unload();
	}

/**
 * test all the errors from failed logger imports
 *
 * @expectedException \Cake\Core\Exception\Exception
 * @return void
 */
	public function testImportingLoggerFailure() {
		Log::config('fail', []);
		Log::engine('fail');
	}

/**
 * test config() with valid key name
 *
 * @return void
 */
	public function testValidKeyName() {
		Log::config('valid', array('engine' => 'File'));
		$stream = Log::engine('valid');
		$this->assertInstanceOf('Cake\Log\Engine\FileLog', $stream);
	}

/**
 * test that loggers have to implement the correct interface.
 *
 * @expectedException \Cake\Core\Exception\Exception
 * @return void
 */
	public function testNotImplementingInterface() {
		Log::config('fail', array('engine' => '\stdClass'));
		Log::engine('fail');
	}

/**
 * explicit tests for drop()
 *
 * @return void
 */
	public function testDrop() {
		Log::config('file', array(
			'engine' => 'File',
			'path' => LOGS
		));
		$result = Log::configured();
		$this->assertContains('file', $result);

		$this->assertTrue(Log::drop('file'), 'Should be dropped');
		$this->assertFalse(Log::drop('file'), 'Already gone');

		$result = Log::configured();
		$this->assertNotContains('file', $result);
	}

/**
 * test config() with valid key name
 *
 * @expectedException \Cake\Core\Exception\Exception
 * @return void
 */
	public function testInvalidLevel() {
		Log::config('myengine', array('engine' => 'File'));
		Log::write('invalid', 'This will not be logged');
	}

/**
 * Provider for config() tests.
 *
 * @return array
 */
	public static function configProvider() {
		return [
			'Array of data using engine key.' => [[
				'engine' => 'File',
				'path' => TMP . 'tests',
			]],
			'Array of data using classname key.' => [[
				'className' => 'File',
				'path' => TMP . 'tests',
			]],
			'Direct instance' => [new FileLog()],
		];
	}

/**
 * Test the various config call signatures.
 *
 * @dataProvider configProvider
 * @return void
 */
	public function testConfigVariants($settings) {
		Log::config('test', $settings);
		$this->assertContains('test', Log::configured());
		$this->assertInstanceOf('Cake\Log\Engine\FileLog', Log::engine('test'));
		Log::drop('test');
	}

/**
 * Test that config() throws an exception when adding an
 * adapter with the wrong type.
 *
 * @expectedException \Cake\Core\Exception\Exception
 * @return void
 */
	public function testConfigInjectErrorOnWrongType() {
		Log::config('test', new \StdClass);
		Log::info('testing');
	}

/**
 * Test that config() can read data back
 *
 * @return void
 */
	public function testConfigRead() {
		$config = [
			'engine' => 'File',
			'path' => LOGS
		];
		Log::config('tests', $config);

		$expected = $config;
		$expected['className'] = $config['engine'];
		unset($expected['engine']);
		$this->assertSame($expected, Log::config('tests'));
	}

/**
 * Ensure you cannot reconfigure a log adapter.
 *
 * @expectedException BadMethodCallException
 * @return void
 */
	public function testConfigErrorOnReconfigure() {
		Log::config('tests', ['engine' => 'File', 'path' => TMP]);
		Log::config('tests', ['engine' => 'Apc']);
	}

/**
 * testLogFileWriting method
 *
 * @return void
 */
	public function testLogFileWriting() {
		$this->_resetLogConfig();
		if (file_exists(LOGS . 'error.log')) {
			unlink(LOGS . 'error.log');
		}
		$result = Log::write(LOG_WARNING, 'Test warning');
		$this->assertTrue($result);
		$this->assertFileExists(LOGS . 'error.log');
		unlink(LOGS . 'error.log');

		Log::write(LOG_WARNING, 'Test warning 1');
		Log::write(LOG_WARNING, 'Test warning 2');
		$result = file_get_contents(LOGS . 'error.log');
		$this->assertRegExp('/^2[0-9]{3}-[0-9]+-[0-9]+ [0-9]+:[0-9]+:[0-9]+ Warning: Test warning 1/', $result);
		$this->assertRegExp('/2[0-9]{3}-[0-9]+-[0-9]+ [0-9]+:[0-9]+:[0-9]+ Warning: Test warning 2$/', $result);
		unlink(LOGS . 'error.log');
	}

/**
 * test selective logging by level/type
 *
 * @return void
 */
	public function testSelectiveLoggingByLevel() {
		if (file_exists(LOGS . 'spam.log')) {
			unlink(LOGS . 'spam.log');
		}
		if (file_exists(LOGS . 'eggs.log')) {
			unlink(LOGS . 'eggs.log');
		}
		Log::config('spam', array(
			'engine' => 'File',
			'types' => 'debug',
			'file' => 'spam',
		));
		Log::config('eggs', array(
			'engine' => 'File',
			'types' => array('eggs', 'debug', 'error', 'warning'),
			'file' => 'eggs',
		));

		$testMessage = 'selective logging';
		Log::write(LOG_WARNING, $testMessage);

		$this->assertFileExists(LOGS . 'eggs.log');
		$this->assertFileNotExists(LOGS . 'spam.log');

		Log::write(LOG_DEBUG, $testMessage);
		$this->assertFileExists(LOGS . 'spam.log');

		$contents = file_get_contents(LOGS . 'spam.log');
		$this->assertContains('Debug: ' . $testMessage, $contents);
		$contents = file_get_contents(LOGS . 'eggs.log');
		$this->assertContains('Debug: ' . $testMessage, $contents);

		if (file_exists(LOGS . 'spam.log')) {
			unlink(LOGS . 'spam.log');
		}
		if (file_exists(LOGS . 'eggs.log')) {
			unlink(LOGS . 'eggs.log');
		}
	}

	protected function _resetLogConfig() {
		Log::config('debug', array(
			'engine' => 'File',
			'types' => array('notice', 'info', 'debug'),
			'file' => 'debug',
		));
		Log::config('error', array(
			'engine' => 'File',
			'types' => array('warning', 'error', 'critical', 'alert', 'emergency'),
			'file' => 'error',
		));
	}

	protected function _deleteLogs() {
		if (file_exists(LOGS . 'shops.log')) {
			unlink(LOGS . 'shops.log');
		}
		if (file_exists(LOGS . 'error.log')) {
			unlink(LOGS . 'error.log');
		}
		if (file_exists(LOGS . 'debug.log')) {
			unlink(LOGS . 'debug.log');
		}
		if (file_exists(LOGS . 'bogus.log')) {
			unlink(LOGS . 'bogus.log');
		}
		if (file_exists(LOGS . 'spam.log')) {
			unlink(LOGS . 'spam.log');
		}
		if (file_exists(LOGS . 'eggs.log')) {
			unlink(LOGS . 'eggs.log');
		}
	}

/**
 * test scoped logging
 *
 * @return void
 */
	public function testScopedLogging() {
		$this->_deleteLogs();
		$this->_resetLogConfig();
		Log::config('shops', array(
			'engine' => 'File',
			'types' => array('info', 'debug', 'warning'),
			'scopes' => array('transactions', 'orders'),
			'file' => 'shops',
		));

		Log::write('debug', 'debug message', 'transactions');
		$this->assertFileNotExists(LOGS . 'error.log');
		$this->assertFileExists(LOGS . 'shops.log');
		$this->assertFileExists(LOGS . 'debug.log');

		$this->_deleteLogs();

		Log::write('warning', 'warning message', 'orders');
		$this->assertFileExists(LOGS . 'error.log');
		$this->assertFileExists(LOGS . 'shops.log');
		$this->assertFileNotExists(LOGS . 'debug.log');

		$this->_deleteLogs();

		Log::write('error', 'error message', 'orders');
		$this->assertFileExists(LOGS . 'error.log');
		$this->assertFileNotExists(LOGS . 'debug.log');
		$this->assertFileNotExists(LOGS . 'shops.log');

		$this->_deleteLogs();

		Log::drop('shops');
	}

/**
 * test scoped logging with convenience methods
 */
	public function testConvenienceScopedLogging() {
		if (file_exists(LOGS . 'shops.log')) {
			unlink(LOGS . 'shops.log');
		}
		if (file_exists(LOGS . 'error.log')) {
			unlink(LOGS . 'error.log');
		}
		if (file_exists(LOGS . 'debug.log')) {
			unlink(LOGS . 'debug.log');
		}

		$this->_resetLogConfig();
		Log::config('shops', array(
			'engine' => 'File',
			'types' => array('info', 'debug', 'notice', 'warning'),
			'scopes' => array('transactions', 'orders'),
			'file' => 'shops',
		));

		Log::info('info message', 'transactions');
		$this->assertFileNotExists(LOGS . 'error.log');
		$this->assertFileExists(LOGS . 'shops.log');
		$this->assertFileExists(LOGS . 'debug.log');

		$this->_deleteLogs();

		Log::error('error message', 'orders');
		$this->assertFileExists(LOGS . 'error.log');
		$this->assertFileNotExists(LOGS . 'debug.log');
		$this->assertFileNotExists(LOGS . 'shops.log');

		$this->_deleteLogs();

		Log::warning('warning message', 'orders');
		$this->assertFileExists(LOGS . 'error.log');
		$this->assertFileExists(LOGS . 'shops.log');
		$this->assertFileNotExists(LOGS . 'debug.log');

		$this->_deleteLogs();

		Log::drop('shops');
	}

/**
 * Test that scopes are exclusive and don't bleed.
 *
 * @return void
 */
	public function testScopedLoggingExclusive() {
		$this->_deleteLogs();

		Log::config('shops', array(
			'engine' => 'File',
			'types' => array('debug', 'notice', 'warning'),
			'scopes' => array('transactions', 'orders'),
			'file' => 'shops.log',
		));
		Log::config('eggs', array(
			'engine' => 'File',
			'types' => array('debug', 'notice', 'warning'),
			'scopes' => array('eggs'),
			'file' => 'eggs.log',
		));

		Log::write('debug', 'transactions message', 'transactions');
		$this->assertFileNotExists(LOGS . 'eggs.log');
		$this->assertFileExists(LOGS . 'shops.log');

		$this->_deleteLogs();

		Log::write('debug', 'eggs message', 'eggs');
		$this->assertFileExists(LOGS . 'eggs.log');
		$this->assertFileNotExists(LOGS . 'shops.log');
	}

/**
 * testPassingScopeToEngine method
 */
	public function testPassingScopeToEngine() {
		Configure::write('App.namespace', 'TestApp');

		Log::reset();

		Log::config('scope_test', [
			'engine' => 'TestApp',
			'types' => array('notice', 'info', 'debug'),
			'scopes' => array('foo', 'bar'),
		]);

		$engine = Log::engine('scope_test');
		$this->assertNull($engine->passedScope);

		Log::write('debug', 'test message', 'foo');
		$this->assertEquals('foo', $engine->passedScope);

		Log::write('debug', 'test message', ['foo', 'bar']);
		$this->assertEquals(['foo', 'bar'], $engine->passedScope);

		$result = Log::write('debug', 'test message');
		$this->assertFalse($result);
	}

/**
 * test convenience methods
 */
	public function testConvenienceMethods() {
		$this->_deleteLogs();

		Log::config('debug', array(
			'engine' => 'File',
			'types' => array('notice', 'info', 'debug'),
			'file' => 'debug',
		));
		Log::config('error', array(
			'engine' => 'File',
			'types' => array('emergency', 'alert', 'critical', 'error', 'warning'),
			'file' => 'error',
		));

		$testMessage = 'emergency message';
		Log::emergency($testMessage);
		$contents = file_get_contents(LOGS . 'error.log');
		$this->assertRegExp('/(Emergency|Critical): ' . $testMessage . '/', $contents);
		$this->assertFileNotExists(LOGS . 'debug.log');
		$this->_deleteLogs();

		$testMessage = 'alert message';
		Log::alert($testMessage);
		$contents = file_get_contents(LOGS . 'error.log');
		$this->assertRegExp('/(Alert|Critical): ' . $testMessage . '/', $contents);
		$this->assertFileNotExists(LOGS . 'debug.log');
		$this->_deleteLogs();

		$testMessage = 'critical message';
		Log::critical($testMessage);
		$contents = file_get_contents(LOGS . 'error.log');
		$this->assertContains('Critical: ' . $testMessage, $contents);
		$this->assertFileNotExists(LOGS . 'debug.log');
		$this->_deleteLogs();

		$testMessage = 'error message';
		Log::error($testMessage);
		$contents = file_get_contents(LOGS . 'error.log');
		$this->assertContains('Error: ' . $testMessage, $contents);
		$this->assertFileNotExists(LOGS . 'debug.log');
		$this->_deleteLogs();

		$testMessage = 'warning message';
		Log::warning($testMessage);
		$contents = file_get_contents(LOGS . 'error.log');
		$this->assertContains('Warning: ' . $testMessage, $contents);
		$this->assertFileNotExists(LOGS . 'debug.log');
		$this->_deleteLogs();

		$testMessage = 'notice message';
		Log::notice($testMessage);
		$contents = file_get_contents(LOGS . 'debug.log');
		$this->assertRegExp('/(Notice|Debug): ' . $testMessage . '/', $contents);
		$this->assertFileNotExists(LOGS . 'error.log');
		$this->_deleteLogs();

		$testMessage = 'info message';
		Log::info($testMessage);
		$contents = file_get_contents(LOGS . 'debug.log');
		$this->assertRegExp('/(Info|Debug): ' . $testMessage . '/', $contents);
		$this->assertFileNotExists(LOGS . 'error.log');
		$this->_deleteLogs();

		$testMessage = 'debug message';
		Log::debug($testMessage);
		$contents = file_get_contents(LOGS . 'debug.log');
		$this->assertContains('Debug: ' . $testMessage, $contents);
		$this->assertFileNotExists(LOGS . 'error.log');
		$this->_deleteLogs();
	}

/**
 * Test that write() returns false on an unhandled message.
 *
 * @return false
 */
	public function testWriteUnhandled() {
		Log::drop('error');
		Log::drop('debug');

		$result = Log::write('error', 'Bad stuff', 'unpossible');
		$this->assertFalse($result);
	}

}