<?php declare(strict_types=1);

/*
 * This file is part of Polymorphine/Session package.
 *
 * (c) Shudd3r <q3.shudder@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace Polymorphine\Session\Tests\SessionContext;

use PHPUnit\Framework\TestCase;
use Polymorphine\Session\SessionContext;
use Polymorphine\Session\SessionStorageProvider;
use Polymorphine\Session\Tests\Fixtures\SessionGlobalState;
use Psr\Http\Server\MiddlewareInterface;
use Polymorphine\Session\Tests\Doubles;
use RuntimeException;

require_once dirname(__DIR__) . '/Fixtures/session-functions.php';


class NativeSessionContextTest extends TestCase
{
    protected function tearDown(): void
    {
        SessionGlobalState::reset();
    }

    public function test_Instantiation()
    {
        $context = $this->context();
        $this->assertInstanceOf(MiddlewareInterface::class, $context);
        $this->assertInstanceOf(SessionContext::class, $context);
        $this->assertInstanceOf(SessionStorageProvider::class, $context);
    }

    public function test_SessionName_IsSynchronizedWithCookieName()
    {
        $cookie = new Doubles\MockedCookie('MySESSION');
        $this->context($cookie)->process($this->request(), $this->handler());
        $this->assertSame('MySESSION', SessionGlobalState::$name);
    }

    public function test_SessionInitialization()
    {
        $context = $this->context($cookie);
        $handler = $this->handler(function () use ($context) {
            $context->storage()->set('foo', 'bar');
        });

        $context->process($this->request(), $handler);
        $this->assertSame(['foo' => 'bar'], SessionGlobalState::$data);
        $this->assertSame('DefaultSessionId', $cookie->value);
    }

    public function test_SessionResume()
    {
        SessionGlobalState::$data = ['foo' => 'bar'];

        $context = $this->context($cookie);
        $handler = $this->handler(function () use ($context) {
            $session = $context->storage();
            $session->set('foo', $session->get('foo') . '-baz');
        });

        $context->process($this->request(true), $handler);
        $this->assertSame(['foo' => 'bar-baz'], SessionGlobalState::$data);
        $this->assertNull($cookie->value);
    }

    public function test_SessionRegenerateId()
    {
        SessionGlobalState::$data = ['foo' => 'bar'];

        $context = $this->context($cookie);
        $handler = $this->handler(function () use ($context) {
            $context->reset();
        });

        $context->process($this->request(true), $handler);
        $this->assertSame(['foo' => 'bar'], SessionGlobalState::$data);
        $this->assertSame('RegeneratedSessionId', $cookie->value);
    }

    public function test_SessionDestroy()
    {
        SessionGlobalState::$data = ['foo' => 'bar'];

        $context = $this->context($cookie);
        $handler = $this->handler(function () use ($context) {
            $context->storage()->clear();
        });

        $context->process($this->request(true), $handler);
        $this->assertSame([], SessionGlobalState::$data);
        $this->assertTrue($cookie->deleted);
    }

    public function test_ClearedSession_WithNewData_RegeneratesId()
    {
        SessionGlobalState::$data = ['foo' => 'bar'];

        $context = $this->context($cookie);
        $handler = $this->handler(function () use ($context) {
            $storage = $context->storage();
            $storage->clear();
            $storage->set('baz', 'qux');
        });

        $context->process($this->request(true), $handler);
        $this->assertSame('RegeneratedSessionId', SessionGlobalState::$id);
        $this->assertSame('RegeneratedSessionId', $cookie->value);
    }

    public function test_ProcessingWhileSessionStarted_ThrowsException()
    {
        SessionGlobalState::$status = PHP_SESSION_ACTIVE;
        $context = $this->context();

        $this->expectException(RuntimeException::class);
        $context->process($this->request(true), $this->handler());
    }

    public function test_CallingSessionWithoutContextProcessing_ThrowsException()
    {
        $context = $this->context();

        $this->expectException(RuntimeException::class);
        $context->storage();
    }

    private function request($cookie = false): Doubles\FakeServerRequest
    {
        return $cookie
            ? Doubles\FakeServerRequest::withSessionCookie(SessionGlobalState::$name, SessionGlobalState::$id)
            : new Doubles\FakeServerRequest();
    }

    private function handler(?callable $process = null): Doubles\FakeRequestHandler
    {
        return new Doubles\FakeRequestHandler($process);
    }

    private function context(?Doubles\MockedCookie &$cookie = null): SessionContext\NativeSessionContext
    {
        $cookie ??= new Doubles\MockedCookie(SessionGlobalState::$name);
        return new SessionContext\NativeSessionContext($cookie);
    }
}