<?php
class CFileHelperTest extends CTestCase
{
	private $testDir;
	private $testMode = 0770;
	private $rootDir1 = "test1";
	private $rootDir2 = "test2";
	private $subDir = 'sub';
	private $file = 'testfile';

	protected function setUp()
	{
		$this->testDir = Yii::getPathOfAlias('application.runtime.CFileHelper');
		if(!is_dir($this->testDir) &&
			!(@mkdir($this->testDir)))
			$this->markTestIncomplete('Unit tests runtime directory should have writable permissions!');

		// create temporary testing data files
		$filesData=array(
			'mimeTypes1.php'=>"<?php return array('txa'=>'application/json','txb'=>'another/mime');",
			'mimeTypes2.php'=>"<?php return array('txt'=>'text/plain','txb'=>'another/mime2');",
		);
		foreach($filesData as $fileName=>$fileData)
			if(!(@file_put_contents($this->testDir.$fileName,$fileData)))
				$this->markTestIncomplete('Unit tests runtime directory should have writable permissions!');
	}

	protected function tearDown()
	{
		if (is_dir($this->testDir)) $this->rrmdir($this->testDir);
	}

	public function testGetMimeTypeByExtension()
	{
		// run everything ten times in one test action to be sure that caching inside
		// CFileHelper::getMimeTypeByExtension() is working the right way
		for($i=0; $i<10; $i++)
		{
			$this->assertNull(CFileHelper::getMimeTypeByExtension('test.txa'));
			$this->assertNull(CFileHelper::getMimeTypeByExtension('test.txb'));
			$this->assertEquals('text/plain',CFileHelper::getMimeTypeByExtension('test.txt'));

			$this->assertEquals('application/json',CFileHelper::getMimeTypeByExtension('test.txa',$this->testDir.'mimeTypes1.php'));
			$this->assertEquals('another/mime',CFileHelper::getMimeTypeByExtension('test.txb',$this->testDir.'mimeTypes1.php'));
			$this->assertNull(CFileHelper::getMimeTypeByExtension('test.txt',$this->testDir.'mimeTypes1.php'));

			$this->assertNull(CFileHelper::getMimeTypeByExtension('test.txa',$this->testDir.'mimeTypes2.php'));
			$this->assertEquals('another/mime2',CFileHelper::getMimeTypeByExtension('test.txb',$this->testDir.'mimeTypes2.php'));
			$this->assertEquals('text/plain',CFileHelper::getMimeTypeByExtension('test.txt',$this->testDir.'mimeTypes2.php'));
		}
	}

	public function testCopyDirectory_subDir_modeShoudBe0775()
	{
		$this->createTestStruct($this->testDir);
		$src = $this->testDir . DIRECTORY_SEPARATOR . $this->rootDir1;
		$dst = $this->testDir . DIRECTORY_SEPARATOR . $this->rootDir2;
		CFileHelper::copyDirectory($src, $dst, array('newDirMode' => $this->testMode));

		$subDir2Mode = $this->getMode($dst . DIRECTORY_SEPARATOR . $this->subDir );
		$expectedMode = sprintf('%o', $this->testMode);
		$this->assertEquals($expectedMode, $subDir2Mode, "Subdir mode is not {$expectedMode}");
	}

	public function testCopyDirectory_subDir_modeShoudBe0777()
	{
		$this->createTestStruct($this->testDir);
		$src = $this->testDir . DIRECTORY_SEPARATOR . $this->rootDir1;
		$dst = $this->testDir . DIRECTORY_SEPARATOR . $this->rootDir2;
		CFileHelper::copyDirectory($src, $dst);

		$subDir2Mode = $this->getMode($dst . DIRECTORY_SEPARATOR . $this->subDir );
		$expectedMode = sprintf('%o', 0777);
		$this->assertEquals($expectedMode, $subDir2Mode, "Subdir mode is not {$expectedMode}");
	}

	private function createTestStruct($testDir)
	{
		$rootDir = $testDir . DIRECTORY_SEPARATOR . $this->rootDir1;
		mkdir($rootDir);

		$subDir = $testDir . DIRECTORY_SEPARATOR . $this->rootDir1 . DIRECTORY_SEPARATOR . $this->subDir;
		mkdir($subDir);

		$file = $testDir . DIRECTORY_SEPARATOR . $this->rootDir1 . DIRECTORY_SEPARATOR . $this->subDir . DIRECTORY_SEPARATOR . $this->file;
		file_put_contents($file, '12321312');
	}

	private function getMode($file)
	{
		return substr(sprintf('%o', fileperms($file)), -4);
	}

	private function rrmdir($dir)
	{
		if ($handle = opendir($dir))
		{
			while (false !== ($entry = readdir($handle)))
			{
				if ($entry != "." && $entry != "..")
				{
					if (is_dir($dir . "/" . $entry) === true)
					{
						$this->rrmdir($dir . "/" . $entry);
					}
					else
					{
						unlink($dir . "/" . $entry);
					}
				}
			}
			closedir($handle);
			rmdir($dir);
		}
	}
}