<?php declare(strict_types=1);

/*
 * This file is part of Composer.
 *
 * (c) Nils Adermann <naderman@naderman.de>
 *     Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Composer\Test\Package\Version;

use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
use Composer\IO\BufferIO;
use Composer\Package\Version\VersionSelector;
use Composer\Package\Package;
use Composer\Package\Link;
use Composer\Package\AliasPackage;
use Composer\Repository\PlatformRepository;
use Composer\Package\Version\VersionParser;
use Composer\Test\TestCase;
use Symfony\Component\Console\Output\StreamOutput;

class VersionSelectorTest extends TestCase
{
    // A) multiple versions, get the latest one
    // B) targetPackageVersion will pass to repo set
    // C) No results, throw exception

    public function testLatestVersionIsReturned(): void
    {
        $packageName = 'foo/bar';

        $package1 = $this->getPackage('foo/bar', '1.2.1');
        $package2 = $this->getPackage('foo/bar', '1.2.2');
        $package3 = $this->getPackage('foo/bar', '1.2.0');
        $packages = [$package1, $package2, $package3];

        $repositorySet = $this->createMockRepositorySet();
        $repositorySet->expects($this->once())
            ->method('findPackages')
            ->with($packageName, null)
            ->will($this->returnValue($packages));

        $versionSelector = new VersionSelector($repositorySet);
        $best = $versionSelector->findBestCandidate($packageName);

        // 1.2.2 should be returned because it's the latest of the returned versions
        $this->assertSame($package2, $best, 'Latest version should be 1.2.2');
    }

    public function testLatestVersionIsReturnedThatMatchesPhpRequirements(): void
    {
        $packageName = 'foo/bar';

        $platform = new PlatformRepository([], ['php' => '5.5.0']);
        $repositorySet = $this->createMockRepositorySet();
        $versionSelector = new VersionSelector($repositorySet, $platform);

        $parser = new VersionParser;
        $package0 = $this->getPackage('foo/bar', '0.9.0');
        $package0->setRequires(['php' => new Link($packageName, 'php', $parser->parseConstraints('>=5.6'), Link::TYPE_REQUIRE, '>=5.6')]);
        $package1 = $this->getPackage('foo/bar', '1.0.0');
        $package1->setRequires(['php' => new Link($packageName, 'php', $parser->parseConstraints('>=5.4'), Link::TYPE_REQUIRE, '>=5.4')]);
        $package2 = $this->getPackage('foo/bar', '2.0.0');
        $package2->setRequires(['php' => new Link($packageName, 'php', $parser->parseConstraints('>=5.6'), Link::TYPE_REQUIRE, '>=5.6')]);
        $package3 = $this->getPackage('foo/bar', '2.1.0');
        $package3->setRequires(['php' => new Link($packageName, 'php', $parser->parseConstraints('>=5.6'), Link::TYPE_REQUIRE, '>=5.6')]);
        $packages = [$package0, $package1, $package2, $package3];

        $repositorySet->expects($this->any())
            ->method('findPackages')
            ->with($packageName, null)
            ->will($this->returnValue($packages));

        $io = new BufferIO();
        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', null, 0, $io);
        $this->assertSame((string) $package1, (string) $best, 'Latest version supporting php 5.5 should be returned (1.0.0)');
        self::assertSame("<warning>Cannot use foo/bar's latest version 2.1.0 as it requires php >=5.6 which is not satisfied by your platform.".PHP_EOL, $io->getOutput());

        $io = new BufferIO('', StreamOutput::VERBOSITY_VERBOSE);
        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', null, 0, $io);
        $this->assertSame((string) $package1, (string) $best, 'Latest version supporting php 5.5 should be returned (1.0.0)');
        self::assertSame(
            "<warning>Cannot use foo/bar's latest version 2.1.0 as it requires php >=5.6 which is not satisfied by your platform.".PHP_EOL
            ."<warning>Cannot use foo/bar 2.0.0 as it requires php >=5.6 which is not satisfied by your platform.".PHP_EOL,
            $io->getOutput()
        );

        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', PlatformRequirementFilterFactory::ignoreAll());
        $this->assertSame((string) $package3, (string) $best, 'Latest version should be returned when ignoring platform reqs (2.1.0)');
    }

    public function testLatestVersionIsReturnedThatMatchesExtRequirements(): void
    {
        $packageName = 'foo/bar';

        $platform = new PlatformRepository([], ['ext-zip' => '5.3.0']);
        $repositorySet = $this->createMockRepositorySet();
        $versionSelector = new VersionSelector($repositorySet, $platform);

        $parser = new VersionParser;
        $package1 = $this->getPackage('foo/bar', '1.0.0');
        $package1->setRequires(['ext-zip' => new Link($packageName, 'ext-zip', $parser->parseConstraints('^5.2'), Link::TYPE_REQUIRE, '^5.2')]);
        $package2 = $this->getPackage('foo/bar', '2.0.0');
        $package2->setRequires(['ext-zip' => new Link($packageName, 'ext-zip', $parser->parseConstraints('^5.4'), Link::TYPE_REQUIRE, '^5.4')]);
        $packages = [$package1, $package2];

        $repositorySet->expects($this->any())
            ->method('findPackages')
            ->with($packageName, null)
            ->will($this->returnValue($packages));

        $best = $versionSelector->findBestCandidate($packageName);
        $this->assertSame($package1, $best, 'Latest version supporting ext-zip 5.3.0 should be returned (1.0.0)');
        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', PlatformRequirementFilterFactory::ignoreAll());
        $this->assertSame($package2, $best, 'Latest version should be returned when ignoring platform reqs (2.0.0)');
    }

    public function testLatestVersionIsReturnedThatMatchesPlatformExt(): void
    {
        $packageName = 'foo/bar';

        $platform = new PlatformRepository();
        $repositorySet = $this->createMockRepositorySet();
        $versionSelector = new VersionSelector($repositorySet, $platform);

        $parser = new VersionParser;
        $package1 = $this->getPackage('foo/bar', '1.0.0');
        $package2 = $this->getPackage('foo/bar', '2.0.0');
        $package2->setRequires(['ext-barfoo' => new Link($packageName, 'ext-barfoo', $parser->parseConstraints('*'), Link::TYPE_REQUIRE, '*')]);
        $packages = [$package1, $package2];

        $repositorySet->expects($this->any())
            ->method('findPackages')
            ->with($packageName, null)
            ->will($this->returnValue($packages));

        $best = $versionSelector->findBestCandidate($packageName);
        $this->assertSame($package1, $best, 'Latest version not requiring ext-barfoo should be returned (1.0.0)');
        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', PlatformRequirementFilterFactory::ignoreAll());
        $this->assertSame($package2, $best, 'Latest version should be returned when ignoring platform reqs (2.0.0)');
    }

    public function testLatestVersionIsReturnedThatMatchesComposerRequirements(): void
    {
        $packageName = 'foo/bar';

        $platform = new PlatformRepository([], ['composer-runtime-api' => '1.0.0']);
        $repositorySet = $this->createMockRepositorySet();
        $versionSelector = new VersionSelector($repositorySet, $platform);

        $parser = new VersionParser;
        $package1 = $this->getPackage('foo/bar', '1.0.0');
        $package1->setRequires(['composer-runtime-api' => new Link($packageName, 'composer-runtime-api', $parser->parseConstraints('^1.0'), Link::TYPE_REQUIRE, '^1.0')]);
        $package2 = $this->getPackage('foo/bar', '1.1.0');
        $package2->setRequires(['composer-runtime-api' => new Link($packageName, 'composer-runtime-api', $parser->parseConstraints('^2.0'), Link::TYPE_REQUIRE, '^2.0')]);
        $packages = [$package1, $package2];

        $repositorySet->expects($this->any())
            ->method('findPackages')
            ->with($packageName, null)
            ->will($this->returnValue($packages));

        $best = $versionSelector->findBestCandidate($packageName);
        $this->assertSame($package1, $best, 'Latest version supporting composer 1 should be returned (1.0.0)');
        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', PlatformRequirementFilterFactory::ignoreAll());
        $this->assertSame($package2, $best, 'Latest version should be returned when ignoring platform reqs (1.1.0)');
    }

    public function testMostStableVersionIsReturned(): void
    {
        $packageName = 'foo/bar';

        $package1 = $this->getPackage('foo/bar', '1.0.0');
        $package2 = $this->getPackage('foo/bar', '1.1.0-beta');
        $packages = [$package1, $package2];

        $repositorySet = $this->createMockRepositorySet();
        $repositorySet->expects($this->once())
            ->method('findPackages')
            ->with($packageName, null)
            ->will($this->returnValue($packages));

        $versionSelector = new VersionSelector($repositorySet);
        $best = $versionSelector->findBestCandidate($packageName);

        $this->assertSame($package1, $best, 'Latest most stable version should be returned (1.0.0)');
    }

    public function testMostStableVersionIsReturnedRegardlessOfOrder(): void
    {
        $packageName = 'foo/bar';

        $package1 = $this->getPackage('foo/bar', '2.x-dev');
        $package2 = $this->getPackage('foo/bar', '2.0.0-beta3');
        $packages = [$package1, $package2];

        $repositorySet = $this->createMockRepositorySet();
        $repositorySet->expects($this->exactly(2))
            ->method('findPackages')
            ->with($packageName, null)
            ->willReturnOnConsecutiveCalls(
                $packages,
                array_reverse($packages)
            );

        $versionSelector = new VersionSelector($repositorySet);
        $best = $versionSelector->findBestCandidate($packageName);
        $this->assertSame($package2, $best, 'Expecting 2.0.0-beta3, cause beta is more stable than dev');

        $best = $versionSelector->findBestCandidate($packageName);
        $this->assertSame($package2, $best, 'Expecting 2.0.0-beta3, cause beta is more stable than dev');
    }

    public function testHighestVersionIsReturned(): void
    {
        $packageName = 'foo/bar';

        $package1 = $this->getPackage('foo/bar', '1.0.0');
        $package2 = $this->getPackage('foo/bar', '1.1.0-beta');
        $packages = [$package1, $package2];

        $repositorySet = $this->createMockRepositorySet();
        $repositorySet->expects($this->once())
            ->method('findPackages')
            ->with($packageName, null)
            ->will($this->returnValue($packages));

        $versionSelector = new VersionSelector($repositorySet);
        $best = $versionSelector->findBestCandidate($packageName, null, 'dev');

        $this->assertSame($package2, $best, 'Latest version should be returned (1.1.0-beta)');
    }

    public function testHighestVersionMatchingStabilityIsReturned(): void
    {
        $packageName = 'foo/bar';

        $package1 = $this->getPackage('foo/bar', '1.0.0');
        $package2 = $this->getPackage('foo/bar', '1.1.0-beta');
        $package3 = $this->getPackage('foo/bar', '1.2.0-alpha');
        $packages = [$package1, $package2, $package3];

        $repositorySet = $this->createMockRepositorySet();
        $repositorySet->expects($this->once())
            ->method('findPackages')
            ->with($packageName, null)
            ->will($this->returnValue($packages));

        $versionSelector = new VersionSelector($repositorySet);
        $best = $versionSelector->findBestCandidate($packageName, null, 'beta');

        $this->assertSame($package2, $best, 'Latest version should be returned (1.1.0-beta)');
    }

    public function testMostStableUnstableVersionIsReturned(): void
    {
        $packageName = 'foo/bar';

        $package2 = $this->getPackage('foo/bar', '1.1.0-beta');
        $package3 = $this->getPackage('foo/bar', '1.2.0-alpha');
        $packages = [$package2, $package3];

        $repositorySet = $this->createMockRepositorySet();
        $repositorySet->expects($this->once())
            ->method('findPackages')
            ->with($packageName, null)
            ->will($this->returnValue($packages));

        $versionSelector = new VersionSelector($repositorySet);
        $best = $versionSelector->findBestCandidate($packageName, null, 'stable');

        $this->assertSame($package2, $best, 'Latest version should be returned (1.1.0-beta)');
    }

    public function testDefaultBranchAliasIsNeverReturned(): void
    {
        $packageName = 'foo/bar';

        $package = $this->getPackage('foo/bar', '1.1.0-beta');
        $package2 = $this->getPackage('foo/bar', 'dev-main');
        $package2Alias = new AliasPackage($package2, VersionParser::DEFAULT_BRANCH_ALIAS, VersionParser::DEFAULT_BRANCH_ALIAS);
        $packages = [$package, $package2Alias];

        $repositorySet = $this->createMockRepositorySet();
        $repositorySet->expects($this->once())
            ->method('findPackages')
            ->with($packageName, null)
            ->will($this->returnValue($packages));

        $versionSelector = new VersionSelector($repositorySet);
        $best = $versionSelector->findBestCandidate($packageName, null, 'dev');

        $this->assertSame($package2, $best, 'Latest version should be returned (dev-main)');
    }

    public function testFalseReturnedOnNoPackages(): void
    {
        $repositorySet = $this->createMockRepositorySet();
        $repositorySet->expects($this->once())
            ->method('findPackages')
            ->will($this->returnValue([]));

        $versionSelector = new VersionSelector($repositorySet);
        $best = $versionSelector->findBestCandidate('foobaz');
        $this->assertFalse($best, 'No versions are available returns false');
    }

    /**
     * @dataProvider provideRecommendedRequireVersionPackages
     */
    public function testFindRecommendedRequireVersion(string $prettyVersion, string $expectedVersion, ?string $branchAlias = null, string $packageName = 'foo/bar'): void
    {
        $repositorySet = $this->createMockRepositorySet();
        $versionSelector = new VersionSelector($repositorySet);
        $versionParser = new VersionParser();

        $package = new Package($packageName, $versionParser->normalize($prettyVersion), $prettyVersion);

        if ($branchAlias) {
            $package->setExtra(['branch-alias' => [$prettyVersion => $branchAlias]]);
        }

        $recommended = $versionSelector->findRecommendedRequireVersion($package);

        // assert that the recommended version is what we expect
        $this->assertSame($expectedVersion, $recommended);
    }

    public function provideRecommendedRequireVersionPackages(): array
    {
        return [
            // real version, expected recommendation, [branch-alias], [pkg name]
            ['1.2.1', '^1.2'],
            ['1.2', '^1.2'],
            ['v1.2.1', '^1.2'],
            ['3.1.2-pl2', '^3.1'],
            ['3.1.2-patch', '^3.1'],
            ['2.0-beta.1', '^2.0@beta'],
            ['3.1.2-alpha5', '^3.1@alpha'],
            ['3.0-RC2', '^3.0@RC'],
            ['0.1.0', '^0.1.0'],
            ['0.1.3', '^0.1.3'],
            ['0.0.3', '^0.0.3'],
            ['0.0.3-alpha', '^0.0.3@alpha'],
            // date-based versions are not touched at all
            ['v20121020', 'v20121020'],
            ['v20121020.2', 'v20121020.2'],
            // dev packages without alias are not touched at all
            ['dev-master', 'dev-master'],
            ['3.1.2-dev', '3.1.2-dev'],
            // dev packages with alias inherit the alias
            ['dev-master', '^2.1@dev', '2.1.x-dev'],
            ['dev-master', '^2.1@dev', '2.1-dev'],
            ['dev-master', '^2.1@dev', '2.1.3.x-dev'],
            ['dev-master', '^2.0@dev', '2.x-dev'],
            ['dev-master', '^0.3.0@dev', '0.3.x-dev'],
            ['dev-master', '^0.0.3@dev', '0.0.3.x-dev'],
            ['dev-master', 'dev-master', VersionParser::DEFAULT_BRANCH_ALIAS],
            // numeric alias
            ['3.x-dev', '^3.0@dev', '3.0.x-dev'],
            ['3.x-dev', '^3.0@dev', '3.0-dev'],
            // ext in sync with php
            [PHP_MAJOR_VERSION . '.' . PHP_MINOR_VERSION . '.' . PHP_RELEASE_VERSION,  '*', null, 'ext-filter'],
            // ext versioned individually
            ['3.0.5', '^3.0', null, 'ext-xdebug'],
        ];
    }

    /**
     * @return \PHPUnit\Framework\MockObject\MockObject&\Composer\Repository\RepositorySet
     */
    private function createMockRepositorySet()
    {
        return $this->getMockBuilder('Composer\Repository\RepositorySet')
            ->disableOriginalConstructor()
            ->getMock();
    }
}