<?php

use PrivateBin\Filter;
use Eris\Generator;

class FilterTest extends PHPUnit_Framework_TestCase
{
    use Eris\TestTrait;

    public function testFilterStripsSlashesDeeply()
    {
        $this->assertEquals(
            array("f'oo", "b'ar", array("fo'o", "b'ar")),
            Filter::stripslashesDeep(array("f\\'oo", "b\\'ar", array("fo\\'o", "b\\'ar")))
        );
    }

    public function testFilterMakesTimesHumanlyReadable()
    {
        $this->forAll(
            Generator\nat(),
            Generator\oneOf(
                'sec', 'second', 'seconds'
            )
        )->then(
            function ($int, $unit)
            {
                $suffix = $int === 1 ? '' : 's';
                $this->assertEquals($int . ' second' . $suffix, Filter::formatHumanReadableTime($int . $unit));
            }
        );
        $this->forAll(
            Generator\nat(),
            Generator\oneOf(
                'min', 'minute', 'minutes'
            )
        )->then(
            function ($int, $unit)
            {
                $suffix = $int === 1 ? '' : 's';
                $this->assertEquals($int . ' minute' . $suffix, Filter::formatHumanReadableTime($int . $unit));
            }
        );
        $this->forAll(
            Generator\nat(),
            Generator\oneOf(
                'hour', 'hours', 'day', 'days', 'week', 'weeks',
                'month', 'months', 'year', 'years'
            )
        )->then(
            function ($int, $unit)
            {
                $suffix = $int === 1 ? '' : 's';
                $this->assertEquals($int . ' ' . rtrim($unit, 's') . $suffix, Filter::formatHumanReadableTime($int . $unit));
            }
        );
    }

    /**
     * @expectedException Exception
     * @expectedExceptionCode 30
     */
    public function testFilterFailTimesHumanlyReadable()
    {
        $this->forAll(
            Generator\string()
        )->then(
            function ($string)
            {
                Filter::formatHumanReadableTime($string);
            }
        );
    }

    public function testFilterMakesSizesHumanlyReadable()
    {
        $this->forAll(
            Generator\neg()
        )->then(
            function ($int)
            {
                $this->assertEquals(number_format($int, 0, '.', ' ') . ' B', Filter::formatHumanReadableSize($int));
            }
        );
        $from = 0;
        $exponent = 1024;
        $to = $exponent - 1;
        $this->forAll(
            Generator\choose($from, $to)
        )->then(
            function ($int)
            {
                $this->assertEquals(number_format($int, 0, '.', ' ') . ' B', Filter::formatHumanReadableSize($int));
            }
        );
        $from = $exponent;
        $exponent *= 1024;
        $to = $exponent - 1;
        $this->forAll(
            Generator\choose($from, $to),
            $from
        )->then(
            function ($int, $divisor)
            {
                $this->assertEquals(number_format($int / $divisor, 2, '.', ' ') . ' KiB', Filter::formatHumanReadableSize($int));
            }
        );
        $from = $exponent;
        $exponent *= 1024;
        $to = $exponent - 1;
        $this->forAll(
            Generator\choose($from, $to),
            $from
        )->then(
            function ($int, $divisor)
            {
                $this->assertEquals(number_format($int / $divisor, 2, '.', ' ') . ' MiB', Filter::formatHumanReadableSize($int));
            }
        );
        $from = $exponent;
        $exponent *= 1024;
        $to = $exponent - 1;
        $this->forAll(
            Generator\choose($from, $to),
            $from
        )->then(
            function ($int, $divisor)
            {
                $this->assertEquals(number_format($int / $divisor, 2, '.', ' ') . ' GiB', Filter::formatHumanReadableSize($int));
            }
        );
        $from = $exponent;
        $exponent *= 1024;
        $to = $exponent - 1;
        $this->forAll(
            Generator\choose($from, $to),
            $from
        )->then(
            function ($int, $divisor)
            {
                $this->assertEquals(number_format($int / $divisor, 2, '.', ' ') . ' TiB', Filter::formatHumanReadableSize($int));
            }
        );
        $from = $exponent;
        $exponent *= 1024;
        $to = $exponent - 1;
        $this->forAll(
            Generator\choose($from, $to),
            $from
        )->then(
            function ($int, $divisor)
            {
                $this->assertEquals(number_format($int / $divisor, 2, '.', ' ') . ' PiB', Filter::formatHumanReadableSize($int));
            }
        );
        $from = $exponent;
        $exponent *= 1024;
        $to = $exponent - 1;
        // on 64bit systems, this gets larger then PHP_INT_MAX, so PHP casts it
        // to double and the "choose" generator can't handle it
        if ($to > PHP_INT_MAX) {
            $this->assertEquals('1.00 EiB', Filter::formatHumanReadableSize($from));
            $this->assertEquals('1.23 EiB', Filter::formatHumanReadableSize(1.234 * $from));
            $this->assertEquals('1 000.00 EiB', Filter::formatHumanReadableSize(1000 * $from));
            $this->assertEquals('1.00 ZiB', Filter::formatHumanReadableSize($exponent));
            $this->assertEquals('1.23 ZiB', Filter::formatHumanReadableSize(1.234 * $exponent));
            $this->assertEquals('1 000.00 ZiB', Filter::formatHumanReadableSize(1000 * $exponent));
            $exponent *= 1024;
            $this->assertEquals('1.00 YiB', Filter::formatHumanReadableSize($exponent));
            $this->assertEquals('1.23 YiB', Filter::formatHumanReadableSize(1.234 * $exponent));
        } else {
            $this->forAll(
                Generator\choose($from, $to),
                $from
            )->then(
                function ($int, $divisor)
                {
                    $this->assertEquals(number_format($int / $divisor, 2, '.', ' ') . ' EiB', Filter::formatHumanReadableSize($int));
                }
            );
            $from = $exponent;
            $exponent *= 1024;
            $to = $exponent - 1;
            $this->forAll(
                Generator\choose($from, $to),
                $from
            )->then(
                function ($int, $divisor)
                {
                    $this->assertEquals(number_format($int / $divisor, 2, '.', ' ') . ' ZiB', Filter::formatHumanReadableSize($int));
                }
            );
            $from = $exponent;
            $exponent *= 1024;
            $to = $exponent - 1;
            $this->forAll(
                Generator\choose($from, $to),
                $from
            )->then(
                function ($int, $divisor)
                {
                    $this->assertEquals(number_format($int / $divisor, 2, '.', ' ') . ' YiB', Filter::formatHumanReadableSize($int));
                }
            );
        }
    }

    public function testSlowEquals()
    {
        $this->assertTrue(Filter::slowEquals('foo', 'foo'), 'same string');
        $this->assertFalse(Filter::slowEquals('foo', true), 'string and boolean');
        $this->assertFalse(Filter::slowEquals('foo', 0), 'string and integer');
        $this->assertFalse(Filter::slowEquals('123foo', 123), 'string and integer');
        $this->assertFalse(Filter::slowEquals('123foo', '123'), 'different strings');
        $this->assertFalse(Filter::slowEquals('6', ' 6'), 'strings with space');
        $this->assertFalse(Filter::slowEquals('4.2', '4.20'), 'floats as strings');
        $this->assertFalse(Filter::slowEquals('1e3', '1000'), 'integers as strings');
        $this->assertFalse(Filter::slowEquals('9223372036854775807', '9223372036854775808'), 'large integers as strings');
        $this->assertFalse(Filter::slowEquals('61529519452809720693702583126814', '61529519452809720000000000000000'), 'larger integers as strings');
    }
}