<?php
/*
* This file is part of sebastian/comparator.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace SebastianBergmann\Comparator;

/**
* Compares arrays for equality.
*/
class ArrayComparator extends Comparator
{
/**
* Returns whether the comparator can compare two values.
*
* @param mixed $expected The first value to compare
* @param mixed $actual The second value to compare
*
* @return bool
*/
public function accepts($expected, $actual)
{
return \is_array($expected) && \is_array($actual);
}

/**
* Asserts that two values are equal.
*
* @param mixed $expected First value to compare
* @param mixed $actual Second value to compare
* @param float $delta Allowed numerical distance between two values to consider them equal
* @param bool $canonicalize Arrays are sorted before comparison when set to true
* @param bool $ignoreCase Case is ignored when set to true
* @param array $processed List of already processed elements (used to prevent infinite recursion)
*
* @throws ComparisonFailure
*/
public function assertEquals($expected, $actual, $delta = 0.0, $canonicalize = false, $ignoreCase = false, array &$processed = [])
{
if ($canonicalize) {
\sort($expected);
\sort($actual);
}

$remaining = $actual;
$actualAsString = "Array (\n";
$expectedAsString = "Array (\n";
$equal = true;

foreach ($expected as $key => $value) {
unset($remaining[$key]);

if (!\array_key_exists($key, $actual)) {
$expectedAsString .= \sprintf(
" %s => %s\n",
$this->exporter->export($key),
$this->exporter->shortenedExport($value)
);

$equal = false;

continue;
}

try {
$comparator = $this->factory->getComparatorFor($value, $actual[$key]);
$comparator->assertEquals($value, $actual[$key], $delta, $canonicalize, $ignoreCase, $processed);

$expectedAsString .= \sprintf(
" %s => %s\n",
$this->exporter->export($key),
$this->exporter->shortenedExport($value)
);

$actualAsString .= \sprintf(
" %s => %s\n",
$this->exporter->export($key),
$this->exporter->shortenedExport($actual[$key])
);
} catch (ComparisonFailure $e) {
$expectedAsString .= \sprintf(
" %s => %s\n",
$this->exporter->export($key),
$e->getExpectedAsString() ? $this->indent($e->getExpectedAsString()) : $this->exporter->shortenedExport($e->getExpected())
);

$actualAsString .= \sprintf(
" %s => %s\n",
$this->exporter->export($key),
$e->getActualAsString() ? $this->indent($e->getActualAsString()) : $this->exporter->shortenedExport($e->getActual())
);

$equal = false;
}
}

foreach ($remaining as $key => $value) {
$actualAsString .= \sprintf(
" %s => %s\n",
$this->exporter->export($key),
$this->exporter->shortenedExport($value)
);

$equal = false;
}

$expectedAsString .= ')';
$actualAsString .= ')';

if (!$equal) {
throw new ComparisonFailure(
$expected,
$actual,
$expectedAsString,
$actualAsString,
false,
'Failed asserting that two arrays are equal.'
);
}
}

protected function indent($lines)
{
return \trim(\str_replace("\n", "\n ", $lines));
}
}