<?php

namespace Symfony\Component\Console\Tests\Helper;

use PHPUnit\Framework\TestCase;
use Symfony\Component\Console\Helper\ProgressIndicator;
use Symfony\Component\Console\Output\StreamOutput;

/**
 * @group time-sensitive
 */
class ProgressIndicatorTest extends TestCase
{
    public function testDefaultIndicator()
    {
        $bar = new ProgressIndicator($output = $this->getOutputStream());
        $bar->start('Starting...');
        usleep(101000);
        $bar->advance();
        usleep(101000);
        $bar->advance();
        usleep(101000);
        $bar->advance();
        usleep(101000);
        $bar->advance();
        usleep(101000);
        $bar->advance();
        usleep(101000);
        $bar->setMessage('Advancing...');
        $bar->advance();
        $bar->finish('Done...');
        $bar->start('Starting Again...');
        usleep(101000);
        $bar->advance();
        $bar->finish('Done Again...');

        rewind($output->getStream());

        $this->assertEquals(
            $this->generateOutput(' - Starting...').
            $this->generateOutput(' \\ Starting...').
            $this->generateOutput(' | Starting...').
            $this->generateOutput(' / Starting...').
            $this->generateOutput(' - Starting...').
            $this->generateOutput(' \\ Starting...').
            $this->generateOutput(' \\ Advancing...').
            $this->generateOutput(' | Advancing...').
            $this->generateOutput(' | Done...').
            PHP_EOL.
            $this->generateOutput(' - Starting Again...').
            $this->generateOutput(' \\ Starting Again...').
            $this->generateOutput(' \\ Done Again...').
            PHP_EOL,
            stream_get_contents($output->getStream())
        );
    }

    public function testNonDecoratedOutput()
    {
        $bar = new ProgressIndicator($output = $this->getOutputStream(false));

        $bar->start('Starting...');
        $bar->advance();
        $bar->advance();
        $bar->setMessage('Midway...');
        $bar->advance();
        $bar->advance();
        $bar->finish('Done...');

        rewind($output->getStream());

        $this->assertEquals(
            ' Starting...'.PHP_EOL.
            ' Midway...'.PHP_EOL.
            ' Done...'.PHP_EOL.PHP_EOL,
            stream_get_contents($output->getStream())
        );
    }

    public function testCustomIndicatorValues()
    {
        $bar = new ProgressIndicator($output = $this->getOutputStream(), null, 100, ['a', 'b', 'c']);

        $bar->start('Starting...');
        usleep(101000);
        $bar->advance();
        usleep(101000);
        $bar->advance();
        usleep(101000);
        $bar->advance();

        rewind($output->getStream());

        $this->assertEquals(
            $this->generateOutput(' a Starting...').
            $this->generateOutput(' b Starting...').
            $this->generateOutput(' c Starting...').
            $this->generateOutput(' a Starting...'),
            stream_get_contents($output->getStream())
        );
    }

    public function testCannotSetInvalidIndicatorCharacters()
    {
        $this->expectException('InvalidArgumentException');
        $this->expectExceptionMessage('Must have at least 2 indicator value characters.');
        new ProgressIndicator($this->getOutputStream(), null, 100, ['1']);
    }

    public function testCannotStartAlreadyStartedIndicator()
    {
        $this->expectException('LogicException');
        $this->expectExceptionMessage('Progress indicator already started.');
        $bar = new ProgressIndicator($this->getOutputStream());
        $bar->start('Starting...');
        $bar->start('Starting Again.');
    }

    public function testCannotAdvanceUnstartedIndicator()
    {
        $this->expectException('LogicException');
        $this->expectExceptionMessage('Progress indicator has not yet been started.');
        $bar = new ProgressIndicator($this->getOutputStream());
        $bar->advance();
    }

    public function testCannotFinishUnstartedIndicator()
    {
        $this->expectException('LogicException');
        $this->expectExceptionMessage('Progress indicator has not yet been started.');
        $bar = new ProgressIndicator($this->getOutputStream());
        $bar->finish('Finished');
    }

    /**
     * @dataProvider provideFormat
     */
    public function testFormats($format)
    {
        $bar = new ProgressIndicator($output = $this->getOutputStream(), $format);
        $bar->start('Starting...');
        $bar->advance();

        rewind($output->getStream());

        $this->assertNotEmpty(stream_get_contents($output->getStream()));
    }

    /**
     * Provides each defined format.
     */
    public function provideFormat(): array
    {
        return [
            ['normal'],
            ['verbose'],
            ['very_verbose'],
            ['debug'],
        ];
    }

    protected function getOutputStream($decorated = true, $verbosity = StreamOutput::VERBOSITY_NORMAL)
    {
        return new StreamOutput(fopen('php://memory', 'r+', false), $verbosity, $decorated);
    }

    protected function generateOutput($expected)
    {
        $count = substr_count($expected, "\n");

        return "\x0D\x1B[2K".($count ? sprintf("\033[%dA", $count) : '').$expected;
    }
}
