<?php

namespace EasySwoole\DoctrineAnnotation\Tests;

use EasySwoole\DoctrineAnnotation\AnnotationRegistry;
use EasySwoole\DoctrineAnnotation\Tests\Fixtures\Annotation\CanBeAutoLoaded;
use EasySwoole\DoctrineAnnotation\Tests\Fixtures\Annotation\LoadedUsingRegisterFile;
use EasySwoole\DoctrineAnnotation\Tests\Fixtures\Annotation\ShouldNeverBeLoaded;
use PHPUnit\Framework\TestCase;
use ReflectionProperty;
use TypeError;

use function random_int;

class AnnotationRegistryTest extends TestCase
{
    /** @var string */
    protected $class = AnnotationRegistry::class;

    /**
     * @runInSeparateProcess
     */
    public function testReset(): void
    {
        $data = ['foo' => 'bar'];

        $this->setStaticField($this->class, 'autoloadNamespaces', $data);
        $this->setStaticField($this->class, 'loaders', $data);

        self::assertSame($data, $this->getStaticField($this->class, 'autoloadNamespaces'));
        self::assertSame($data, $this->getStaticField($this->class, 'loaders'));

        AnnotationRegistry::reset();

        self::assertEmpty($this->getStaticField($this->class, 'autoloadNamespaces'));
        self::assertEmpty($this->getStaticField($this->class, 'loaders'));
    }

    /**
     * @runInSeparateProcess
     */
    public function testRegisterAutoloadNamespaces(): void
    {
        $this->setStaticField($this->class, 'autoloadNamespaces', ['foo' => 'bar']);

        AnnotationRegistry::registerAutoloadNamespaces(['test' => 'bar']);
        self::assertSame(['foo' => 'bar', 'test' => 'bar'], $this->getStaticField($this->class, 'autoloadNamespaces'));
    }

    /**
     * @runInSeparateProcess
     */
    public function testRegisterLoaderNoCallable(): void
    {
        $this->expectException(TypeError::class);

        AnnotationRegistry::registerLoader('test' . random_int(10, 10000));
    }

    /**
     * @param mixed[] $value
     */
    protected function setStaticField(string $class, string $field, array $value): void
    {
        $reflection = new ReflectionProperty($class, $field);

        $reflection->setAccessible(true);
        $reflection->setValue(null, $value);
    }

    /**
     * @return mixed
     */
    protected function getStaticField(string $class, string $field)
    {
        $reflection = new ReflectionProperty($class, $field);

        $reflection->setAccessible(true);

        return $reflection->getValue();
    }

    /**
     * @runInSeparateProcess
     */
    public function testStopCallingLoadersIfClassIsNotFound(): void
    {
        AnnotationRegistry::reset();
        $i          = 0;
        $autoLoader = static function () use (&$i): bool {
            $i += 1;

            return false;
        };
        AnnotationRegistry::registerLoader($autoLoader);
        AnnotationRegistry::loadAnnotationClass('unloadableClass');
        AnnotationRegistry::loadAnnotationClass('unloadableClass');
        AnnotationRegistry::loadAnnotationClass('unloadableClass');
        self::assertSame(1, $i, 'Autoloader should only be called once');
    }

    /**
     * @runInSeparateProcess
     */
    public function testStopCallingLoadersAfterClassIsFound(): void
    {
        $className = 'autoloadedClass' . random_int(10, 100000);
        AnnotationRegistry::reset();
        $i          = 0;
        $autoLoader = static function () use (&$i, $className): bool {
            eval('class ' . $className . ' {}');
            $i += 1;

            return true;
        };
        AnnotationRegistry::registerLoader($autoLoader);
        AnnotationRegistry::loadAnnotationClass($className);
        AnnotationRegistry::loadAnnotationClass($className);
        AnnotationRegistry::loadAnnotationClass($className);
        self::assertSame(1, $i, 'Autoloader should only be called once');
    }

    /**
     * @runInSeparateProcess
     */
    public function testAddingANewLoaderClearsTheCache(): void
    {
        $failures      = 0;
        $failingLoader = static function () use (&$failures): bool {
            $failures += 1;

            return false;
        };

        AnnotationRegistry::reset();
        AnnotationRegistry::registerLoader($failingLoader);

        self::assertSame(0, $failures);

        AnnotationRegistry::loadAnnotationClass('unloadableClass');

        self::assertSame(1, $failures);

        AnnotationRegistry::loadAnnotationClass('unloadableClass');

        self::assertSame(1, $failures);

        AnnotationRegistry::registerLoader(static function (): bool {
            return false;
        });
        AnnotationRegistry::loadAnnotationClass('unloadableClass');

        self::assertSame(2, $failures);
    }

    /**
     * @runInSeparateProcess
     */
    public function testResetClearsRegisteredAutoloaderFailures(): void
    {
        $failures      = 0;
        $failingLoader = static function () use (&$failures): bool {
            $failures += 1;

            return false;
        };

        AnnotationRegistry::reset();
        AnnotationRegistry::registerLoader($failingLoader);

        self::assertSame(0, $failures);

        AnnotationRegistry::loadAnnotationClass('unloadableClass');

        self::assertSame(1, $failures);

        AnnotationRegistry::loadAnnotationClass('unloadableClass');

        self::assertSame(1, $failures);

        AnnotationRegistry::reset();
        AnnotationRegistry::registerLoader($failingLoader);
        AnnotationRegistry::loadAnnotationClass('unloadableClass');

        self::assertSame(2, $failures);
    }

    /**
     * @runInSeparateProcess
     */
    public function testRegisterLoaderIfNotExistsOnlyRegisteresSameLoaderOnce(): void
    {
        $className = 'autoloadedClassThatDoesNotExist';
        AnnotationRegistry::reset();
        $autoLoader = self::createPartialMock(Autoloader::class, ['__invoke']);
        $autoLoader->expects($this->once())->method('__invoke');
        AnnotationRegistry::registerUniqueLoader($autoLoader);
        AnnotationRegistry::registerUniqueLoader($autoLoader);
        AnnotationRegistry::loadAnnotationClass($className);
        AnnotationRegistry::loadAnnotationClass($className);
    }

    /**
     * @runInSeparateProcess
     */
    public function testClassExistsFallback(): void
    {
        AnnotationRegistry::reset();

        self::assertTrue(AnnotationRegistry::loadAnnotationClass(CanBeAutoLoaded::class));
    }

    /**
     * @runInSeparateProcess
     */
    public function testClassExistsFallbackNotUsedWhenRegisterFileUsed(): void
    {
        AnnotationRegistry::reset();
        AnnotationRegistry::registerFile(__DIR__ . '/Fixtures/Annotation/LoadedUsingRegisterFile.php');

        self::assertTrue(AnnotationRegistry::loadAnnotationClass(LoadedUsingRegisterFile::class));
        self::assertFalse(AnnotationRegistry::loadAnnotationClass(ShouldNeverBeLoaded::class));
    }
}

class Autoloader
{
    public function __invoke(): void
    {
    }
}