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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Tests\Helper;

use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Helper\QuestionHelper;
use Symfony\Component\Console\Helper\HelperSet;
use Symfony\Component\Console\Helper\FormatterHelper;
use Symfony\Component\Console\Output\StreamOutput;
use Symfony\Component\Console\Question\ChoiceQuestion;
use Symfony\Component\Console\Question\ConfirmationQuestion;
use Symfony\Component\Console\Question\Question;

/**
 * @group tty
 */
class QuestionHelperTest extends \PHPUnit_Framework_TestCase
{
    public function testAskChoice()
    {
        $questionHelper = new QuestionHelper();

        $helperSet = new HelperSet(array(new FormatterHelper()));
        $questionHelper->setHelperSet($helperSet);

        $heroes = array('Superman', 'Batman', 'Spiderman');

        $questionHelper->setInputStream($this->getInputStream("\n1\n  1  \nFabien\n1\nFabien\n1\n0,2\n 0 , 2  \n\n\n"));

        $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, '2');
        $question->setMaxAttempts(1);
        // first answer is an empty answer, we're supposed to receive the default value
        $this->assertEquals('Spiderman', $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));

        $question = new ChoiceQuestion('What is your favorite superhero?', $heroes);
        $question->setMaxAttempts(1);
        $this->assertEquals('Batman', $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $this->assertEquals('Batman', $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));

        $question = new ChoiceQuestion('What is your favorite superhero?', $heroes);
        $question->setErrorMessage('Input "%s" is not a superhero!');
        $question->setMaxAttempts(2);
        $this->assertEquals('Batman', $questionHelper->ask($this->createInputInterfaceMock(), $output = $this->createOutputInterface(), $question));

        rewind($output->getStream());
        $stream = stream_get_contents($output->getStream());
        $this->assertContains('Input "Fabien" is not a superhero!', $stream);

        try {
            $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, '1');
            $question->setMaxAttempts(1);
            $questionHelper->ask($this->createInputInterfaceMock(), $output = $this->createOutputInterface(), $question);
            $this->fail();
        } catch (\InvalidArgumentException $e) {
            $this->assertEquals('Value "Fabien" is invalid', $e->getMessage());
        }

        $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, null);
        $question->setMaxAttempts(1);
        $question->setMultiselect(true);

        $this->assertEquals(array('Batman'), $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $this->assertEquals(array('Superman', 'Spiderman'), $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $this->assertEquals(array('Superman', 'Spiderman'), $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));

        $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, '0,1');
        $question->setMaxAttempts(1);
        $question->setMultiselect(true);

        $this->assertEquals(array('Superman', 'Batman'), $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));

        $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, ' 0 , 1 ');
        $question->setMaxAttempts(1);
        $question->setMultiselect(true);

        $this->assertEquals(array('Superman', 'Batman'), $questionHelper->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
    }

    public function testAsk()
    {
        $dialog = new QuestionHelper();

        $dialog->setInputStream($this->getInputStream("\n8AM\n"));

        $question = new Question('What time is it?', '2PM');
        $this->assertEquals('2PM', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));

        $question = new Question('What time is it?', '2PM');
        $this->assertEquals('8AM', $dialog->ask($this->createInputInterfaceMock(), $output = $this->createOutputInterface(), $question));

        rewind($output->getStream());
        $this->assertEquals('What time is it?', stream_get_contents($output->getStream()));
    }

    public function testAskWithAutocomplete()
    {
        if (!$this->hasSttyAvailable()) {
            $this->markTestSkipped('`stty` is required to test autocomplete functionality');
        }

        // Acm<NEWLINE>
        // Ac<BACKSPACE><BACKSPACE>s<TAB>Test<NEWLINE>
        // <NEWLINE>
        // <UP ARROW><UP ARROW><NEWLINE>
        // <UP ARROW><UP ARROW><UP ARROW><UP ARROW><UP ARROW><TAB>Test<NEWLINE>
        // <DOWN ARROW><NEWLINE>
        // S<BACKSPACE><BACKSPACE><DOWN ARROW><DOWN ARROW><NEWLINE>
        // F00<BACKSPACE><BACKSPACE>oo<TAB><NEWLINE>
        $inputStream = $this->getInputStream("Acm\nAc\177\177s\tTest\n\n\033[A\033[A\n\033[A\033[A\033[A\033[A\033[A\tTest\n\033[B\nS\177\177\033[B\033[B\nF00\177\177oo\t\n");

        $dialog = new QuestionHelper();
        $dialog->setInputStream($inputStream);
        $helperSet = new HelperSet(array(new FormatterHelper()));
        $dialog->setHelperSet($helperSet);

        $question = new Question('Please select a bundle', 'FrameworkBundle');
        $question->setAutocompleterValues(array('AcmeDemoBundle', 'AsseticBundle', 'SecurityBundle', 'FooBundle'));

        $this->assertEquals('AcmeDemoBundle', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $this->assertEquals('AsseticBundleTest', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $this->assertEquals('FrameworkBundle', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $this->assertEquals('SecurityBundle', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $this->assertEquals('FooBundleTest', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $this->assertEquals('AcmeDemoBundle', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $this->assertEquals('AsseticBundle', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $this->assertEquals('FooBundle', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
    }

    public function testAskWithAutocompleteWithNonSequentialKeys()
    {
        if (!$this->hasSttyAvailable()) {
            $this->markTestSkipped('`stty` is required to test autocomplete functionality');
        }

        // <UP ARROW><UP ARROW><NEWLINE><DOWN ARROW><DOWN ARROW><NEWLINE>
        $inputStream = $this->getInputStream("\033[A\033[A\n\033[B\033[B\n");

        $dialog = new QuestionHelper();
        $dialog->setInputStream($inputStream);
        $dialog->setHelperSet(new HelperSet(array(new FormatterHelper())));

        $question = new ChoiceQuestion('Please select a bundle', array(1 => 'AcmeDemoBundle', 4 => 'AsseticBundle'));
        $question->setMaxAttempts(1);

        $this->assertEquals('AcmeDemoBundle', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $this->assertEquals('AsseticBundle', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
    }

    public function testAskHiddenResponse()
    {
        if ('\\' === DIRECTORY_SEPARATOR) {
            $this->markTestSkipped('This test is not supported on Windows');
        }

        $dialog = new QuestionHelper();
        $dialog->setInputStream($this->getInputStream("8AM\n"));

        $question = new Question('What time is it?');
        $question->setHidden(true);

        $this->assertEquals('8AM', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
    }

    /**
     * @dataProvider getAskConfirmationData
     */
    public function testAskConfirmation($question, $expected, $default = true)
    {
        $dialog = new QuestionHelper();

        $dialog->setInputStream($this->getInputStream($question."\n"));
        $question = new ConfirmationQuestion('Do you like French fries?', $default);
        $this->assertEquals($expected, $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question), 'confirmation question should '.($expected ? 'pass' : 'cancel'));
    }

    public function getAskConfirmationData()
    {
        return array(
            array('', true),
            array('', false, false),
            array('y', true),
            array('yes', true),
            array('n', false),
            array('no', false),
        );
    }

    public function testAskConfirmationWithCustomTrueAnswer()
    {
        $dialog = new QuestionHelper();

        $dialog->setInputStream($this->getInputStream("j\ny\n"));
        $question = new ConfirmationQuestion('Do you like French fries?', false, '/^(j|y)/i');
        $this->assertTrue($dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $question = new ConfirmationQuestion('Do you like French fries?', false, '/^(j|y)/i');
        $this->assertTrue($dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
    }

    public function testAskAndValidate()
    {
        $dialog = new QuestionHelper();
        $helperSet = new HelperSet(array(new FormatterHelper()));
        $dialog->setHelperSet($helperSet);

        $error = 'This is not a color!';
        $validator = function ($color) use ($error) {
            if (!in_array($color, array('white', 'black'))) {
                throw new \InvalidArgumentException($error);
            }

            return $color;
        };

        $question = new Question('What color was the white horse of Henry IV?', 'white');
        $question->setValidator($validator);
        $question->setMaxAttempts(2);

        $dialog->setInputStream($this->getInputStream("\nblack\n"));
        $this->assertEquals('white', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));
        $this->assertEquals('black', $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question));

        $dialog->setInputStream($this->getInputStream("green\nyellow\norange\n"));
        try {
            $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question);
            $this->fail();
        } catch (\InvalidArgumentException $e) {
            $this->assertEquals($error, $e->getMessage());
        }
    }

    /**
     * @dataProvider simpleAnswerProvider
     */
    public function testSelectChoiceFromSimpleChoices($providedAnswer, $expectedValue)
    {
        $possibleChoices = array(
            'My environment 1',
            'My environment 2',
            'My environment 3',
        );

        $dialog = new QuestionHelper();
        $dialog->setInputStream($this->getInputStream($providedAnswer."\n"));
        $helperSet = new HelperSet(array(new FormatterHelper()));
        $dialog->setHelperSet($helperSet);

        $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
        $question->setMaxAttempts(1);
        $answer = $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question);

        $this->assertSame($expectedValue, $answer);
    }

    public function simpleAnswerProvider()
    {
        return array(
            array(0, 'My environment 1'),
            array(1, 'My environment 2'),
            array(2, 'My environment 3'),
            array('My environment 1', 'My environment 1'),
            array('My environment 2', 'My environment 2'),
            array('My environment 3', 'My environment 3'),
        );
    }

    /**
     * @dataProvider mixedKeysChoiceListAnswerProvider
     */
    public function testChoiceFromChoicelistWithMixedKeys($providedAnswer, $expectedValue)
    {
        $possibleChoices = array(
            '0' => 'No environment',
            '1' => 'My environment 1',
            'env_2' => 'My environment 2',
            3 => 'My environment 3',
        );

        $dialog = new QuestionHelper();
        $dialog->setInputStream($this->getInputStream($providedAnswer."\n"));
        $helperSet = new HelperSet(array(new FormatterHelper()));
        $dialog->setHelperSet($helperSet);

        $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
        $question->setMaxAttempts(1);
        $answer = $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question);

        $this->assertSame($expectedValue, $answer);
    }

    public function mixedKeysChoiceListAnswerProvider()
    {
        return array(
            array('0', '0'),
            array('No environment', '0'),
            array('1', '1'),
            array('env_2', 'env_2'),
            array(3, '3'),
            array('My environment 1', '1'),
        );
    }

    /**
     * @dataProvider answerProvider
     */
    public function testSelectChoiceFromChoiceList($providedAnswer, $expectedValue)
    {
        $possibleChoices = array(
            'env_1' => 'My environment 1',
            'env_2' => 'My environment',
            'env_3' => 'My environment',
        );

        $dialog = new QuestionHelper();
        $dialog->setInputStream($this->getInputStream($providedAnswer."\n"));
        $helperSet = new HelperSet(array(new FormatterHelper()));
        $dialog->setHelperSet($helperSet);

        $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
        $question->setMaxAttempts(1);
        $answer = $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question);

        $this->assertSame($expectedValue, $answer);
    }

    /**
     * @expectedException        \InvalidArgumentException
     * @expectedExceptionMessage The provided answer is ambiguous. Value should be one of env_2 or env_3.
     */
    public function testAmbiguousChoiceFromChoicelist()
    {
        $possibleChoices = array(
            'env_1' => 'My first environment',
            'env_2' => 'My environment',
            'env_3' => 'My environment',
        );

        $dialog = new QuestionHelper();
        $dialog->setInputStream($this->getInputStream("My environment\n"));
        $helperSet = new HelperSet(array(new FormatterHelper()));
        $dialog->setHelperSet($helperSet);

        $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
        $question->setMaxAttempts(1);

        $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question);
    }

    public function answerProvider()
    {
        return array(
            array('env_1', 'env_1'),
            array('env_2', 'env_2'),
            array('env_3', 'env_3'),
            array('My environment 1', 'env_1'),
        );
    }

    public function testNoInteraction()
    {
        $dialog = new QuestionHelper();
        $question = new Question('Do you have a job?', 'not yet');
        $this->assertEquals('not yet', $dialog->ask($this->createInputInterfaceMock(false), $this->createOutputInterface(), $question));
    }

    /**
     * @requires function mb_strwidth
     */
    public function testChoiceOutputFormattingQuestionForUtf8Keys()
    {
        $question = 'Lorem ipsum?';
        $possibleChoices = array(
            'foo' => 'foo',
            'żółw' => 'bar',
            'łabądź' => 'baz',
        );
        $outputShown = array(
            $question,
            '  [<info>foo   </info>] foo',
            '  [<info>żółw  </info>] bar',
            '  [<info>łabądź</info>] baz',
        );
        $output = $this->getMock('\Symfony\Component\Console\Output\OutputInterface');
        $output->method('getFormatter')->willReturn(new OutputFormatter());

        $dialog = new QuestionHelper();
        $dialog->setInputStream($this->getInputStream("\n"));
        $helperSet = new HelperSet(array(new FormatterHelper()));
        $dialog->setHelperSet($helperSet);

        $output->expects($this->once())->method('writeln')->with($this->equalTo($outputShown));

        $question = new ChoiceQuestion($question, $possibleChoices, 'foo');
        $dialog->ask($this->createInputInterfaceMock(), $output, $question);
    }

    /**
     * @expectedException        \Symfony\Component\Console\Exception\RuntimeException
     * @expectedExceptionMessage Aborted
     */
    public function testAskThrowsExceptionOnMissingInput()
    {
        $dialog = new QuestionHelper();
        $dialog->setInputStream($this->getInputStream(''));

        $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), new Question('What\'s your name?'));
    }

    /**
     * @expectedException        \Symfony\Component\Console\Exception\RuntimeException
     * @expectedExceptionMessage Aborted
     */
    public function testAskThrowsExceptionOnMissingInputWithValidator()
    {
        $dialog = new QuestionHelper();
        $dialog->setInputStream($this->getInputStream(''));

        $question = new Question('What\'s your name?');
        $question->setValidator(function () {
            if (!$value) {
                throw new \Exception('A value is required.');
            }
        });

        $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question);
    }

    protected function getInputStream($input)
    {
        $stream = fopen('php://memory', 'r+', false);
        fwrite($stream, $input);
        rewind($stream);

        return $stream;
    }

    protected function createOutputInterface()
    {
        return new StreamOutput(fopen('php://memory', 'r+', false));
    }

    protected function createInputInterfaceMock($interactive = true)
    {
        $mock = $this->getMock('Symfony\Component\Console\Input\InputInterface');
        $mock->expects($this->any())
            ->method('isInteractive')
            ->will($this->returnValue($interactive));

        return $mock;
    }

    private function hasSttyAvailable()
    {
        exec('stty 2>&1', $output, $exitcode);

        return $exitcode === 0;
    }
}