<?php
namespace Psalm\Tests;

use Generator;
use PhpParser\Node\Stmt\ClassLike;
use Psalm\Codebase;
use Psalm\Context;
use Psalm\FileManipulation;
use Psalm\FileSource;
use Psalm\PluginRegistrationSocket;
use Psalm\Plugin\Hook\AfterClassLikeVisitInterface;
use Psalm\Storage\ClassLikeStorage;
use Psalm\Tests\Internal\Provider\ClassLikeStorageInstanceCacheProvider;
use Psalm\Type;

class CodebaseTest extends TestCase
{
    /** @var Codebase */
    private $codebase;

    /** @return void */
    public function setUp()
    {
        parent::setUp();
        $this->codebase = $this->project_analyzer->getCodebase();
    }

    /**
     * @test
     * @dataProvider typeContainments
     * @return void
     */
    public function isTypeContainedByType(string $input, string $container, bool $expected)
    {
        $input = Type::parseString($input);
        $container = Type::parseString($container);

        $this->assertEquals(
            $expected,
            $this->codebase->isTypeContainedByType($input, $container),
            'Expected ' . $input->getId() . ($expected ? ' ' : ' not ')
            . 'to be contained in ' . $container->getId()
        );
    }


    /** @return iterable<int,array{string,string,bool} */
    public function typeContainments()
    {
        yield ['int', 'int|string', true];
        yield ['int|string', 'int', false];

        // This fails with 'could not get class storage' :(

        // yield ['RuntimeException', 'Exception', true];
        // yield ['Exception', 'RuntimeException', false];
    }

    /**
     * @test
     * @dataProvider typeIntersections
     * @return void
     */
    public function canTypeBeContainedByType(string $input, string $container, bool $expected)
    {
        $input = Type::parseString($input);
        $container = Type::parseString($container);

        $this->assertEquals(
            $expected,
            $this->codebase->canTypeBeContainedByType($input, $container),
            'Expected ' . $input->getId() . ($expected ? ' ' : ' not ')
            . 'to be contained in ' . $container->getId()
        );
    }

    /** @return iterable<int,array{string,string,bool} */
    public function typeIntersections()
    {
        yield ['int', 'int|string', true];
        yield ['int|string', 'int', true];
        yield ['int|string', 'string|float', true];
        yield ['int', 'string', false];
        yield ['int|string', 'array|float', false];
    }

    /**
     * @test
     * @dataProvider iterableParams
     * @param array{string,string} $expected
     * @return void
     */
    public function getKeyValueParamsForTraversableObject(string $input, array $expected)
    {
        list($input) = array_values(Type::parseString($input)->getTypes());

        $expected_key_type = Type::parseString($expected[0]);
        $expected_value_type = Type::parseString($expected[1]);

        $actual = $this->codebase->getKeyValueParamsForTraversableObject($input);

        $this->assertTrue(
            $expected_key_type->equals($actual[0]),
            'Expected ' . $input->getId() . ' to have ' . $expected_key_type
            . ' but got ' . $actual[0]->getId()
        );

        $this->assertTrue(
            $expected_value_type->equals($actual[1]),
            'Expected ' . $input->getId() . ' to have ' . $expected_value_type
            . ' but got ' . $actual[1]->getId()
        );
    }

    /** @return iterable<int,array{string,array{string,string}} */
    public function iterableParams()
    {
        yield ['iterable<int,string>', ['int', 'string']];
        yield ['iterable<int|string,bool|float', ['int|string', 'bool|float']];
    }

    /**
     * @test
     * @return void
     */
    public function customMetadataIsPersisted()
    {
        $this->addFile(
            'somefile.php',
            '<?php
                class C {
                    /** @var string */
                    private $prop = "";

                    /** @return void */
                    public function m(int $_i = 1) {}
                }
            '
        );
        $hook = new class implements AfterClassLikeVisitInterface
        {
            /**
             * @param FileManipulation[] $file_replacements
             * @return void
             */
            public static function afterClassLikeVisit(
                ClassLike $stmt,
                ClassLikeStorage $storage,
                FileSource $statements_source,
                Codebase $codebase,
                array &$file_replacements = []
            ) {
                /** @var ClassLikeStorage $storage */
                if ($storage->name === 'C') {
                    $storage->custom_metadata['a'] = 'b';
                    $storage->methods['m']->custom_metadata['c'] = 'd';
                    $storage->properties['prop']->custom_metadata['e'] = 'f';
                    $storage->methods['m']->params[0]->custom_metadata['g'] = 'h';
                    /** @var Codebase $codebase */
                    $codebase->file_storage_provider->get('somefile.php')->custom_metadata['i'] = 'j';
                }
            }
        };
        (new PluginRegistrationSocket($this->codebase->config, $this->codebase))
            ->registerHooksFromClass(get_class($hook));
        $this->codebase->classlike_storage_provider->cache = new ClassLikeStorageInstanceCacheProvider;

        $this->analyzeFile('somefile.php', new Context);

        $this->codebase->classlike_storage_provider->remove('C');
        $this->codebase->exhumeClassLikeStorage('C', 'somefile.php');

        $class_storage = $this->codebase->classlike_storage_provider->get('C');
        $file_storage = $this->codebase->file_storage_provider->get('somefile.php');

        $this->assertEquals('b', $class_storage->custom_metadata['a']);
        $this->assertEquals('d', $class_storage->methods['m']->custom_metadata['c']);
        $this->assertEquals('f', $class_storage->properties['prop']->custom_metadata['e']);
        $this->assertEquals('h', $class_storage->methods['m']->params[0]->custom_metadata['g']);
        $this->assertEquals('j', $file_storage->custom_metadata['i']);
    }
}