<?php
declare(strict_types=1);

namespace Unsupervised\Schedular\Tests\Unit;

use Brain\Monkey\Actions;
use Brain\Monkey\Functions;
use Mockery;
use Unsupervised\Schedular\Auth\LoginPage;
use Unsupervised\Schedular\Auth\RegistrationPage;
use Unsupervised\Schedular\BlockRegistrar;
use Unsupervised\Schedular\Booking\BookingPage;
use Unsupervised\Schedular\GroupClass\GroupClassPage;

/**
 * Test double exposing editor-preview mode as a switch, since the real
 * detection relies on the REST_REQUEST constant which cannot be toggled
 * within a single PHP process.
 */
class TestableBlockRegistrar extends BlockRegistrar
{
    public bool $preview = false;

    protected function isEditorPreview(): bool
    {
        return $this->preview;
    }
}

class BlockRegistrarTest extends TestCase
{
    private BookingPage&Mockery\MockInterface $bookingPage;
    private LoginPage&Mockery\MockInterface $loginPage;
    private RegistrationPage&Mockery\MockInterface $registrationPage;
    private GroupClassPage&Mockery\MockInterface $groupClassPage;
    private TestableBlockRegistrar $registrar;

    protected function setUp(): void
    {
        parent::setUp();

        $this->bookingPage      = Mockery::mock(BookingPage::class);
        $this->loginPage        = Mockery::mock(LoginPage::class);
        $this->registrationPage = Mockery::mock(RegistrationPage::class);
        $this->groupClassPage   = Mockery::mock(GroupClassPage::class);

        $this->registrar = new TestableBlockRegistrar(
            $this->bookingPage,
            $this->loginPage,
            $this->registrationPage,
            $this->groupClassPage,
        );
    }

    public function testRegisterHooksBlockRegistrationOntoInit(): void
    {
        Actions\expectAdded('init')->once()->with([$this->registrar, 'registerBlocks']);

        $this->registrar->register();
    }

    public function testRegisterBlocksRegistersAllFourBlocksWithAssets(): void
    {
        Functions\expect('wp_register_script')
            ->once()
            ->with(
                BlockRegistrar::SCRIPT_HANDLE,
                Mockery::pattern('~assets/js/blocks\.js$~'),
                Mockery::type('array'),
                USC_VERSION,
                true
            );
        Functions\when('wp_style_is')->justReturn(false);
        Functions\expect('wp_register_style')
            ->once()
            ->with(
                BlockRegistrar::STYLE_HANDLE,
                Mockery::pattern('~assets/css/frontend\.css$~'),
                [],
                USC_VERSION
            );

        $registered = [];
        Functions\when('register_block_type')->alias(
            static function (string $name, array $args) use (&$registered): bool {
                $registered[$name] = $args;
                return true;
            }
        );

        $this->registrar->registerBlocks();

        self::assertSame(
            [
                'us-scheduler/booking',
                'us-scheduler/student-login',
                'us-scheduler/student-register',
                'us-scheduler/group-classes',
            ],
            array_keys($registered)
        );

        foreach ($registered as $args) {
            self::assertSame(BlockRegistrar::SCRIPT_HANDLE, $args['editor_script']);
            self::assertSame(BlockRegistrar::STYLE_HANDLE, $args['style']);
            self::assertIsCallable($args['render_callback']);
        }
    }

    public function testRegisterBlocksDoesNotReRegisterAnAlreadyRegisteredStyle(): void
    {
        Functions\when('wp_register_script')->justReturn(true);
        Functions\when('wp_style_is')->justReturn(true);
        Functions\expect('wp_register_style')->never();
        Functions\when('register_block_type')->justReturn(true);

        $this->registrar->registerBlocks();
    }

    public function testFrontEndRenderDelegatesToThePageObjects(): void
    {
        $this->registrar->preview = false;

        $this->bookingPage->shouldReceive('render')->once()->with([])->andReturn('booking-html');
        $this->loginPage->shouldReceive('render')->once()->with([])->andReturn('login-html');
        $this->registrationPage->shouldReceive('render')->once()->with([])->andReturn('register-html');
        $this->groupClassPage->shouldReceive('render')->once()->with([])->andReturn('group-html');

        self::assertSame('booking-html', $this->registrar->renderBooking());
        self::assertSame('login-html', $this->registrar->renderLogin());
        self::assertSame('register-html', $this->registrar->renderRegistration());
        self::assertSame('group-html', $this->registrar->renderGroupClasses());
    }

    public function testEditorPreviewRendersStaticMarkupWithoutTouchingThePages(): void
    {
        $this->registrar->preview = true;

        Functions\when('wp_nonce_field')->justReturn('');

        $this->bookingPage->shouldNotReceive('render');
        $this->loginPage->shouldNotReceive('render');
        $this->registrationPage->shouldNotReceive('render');
        $this->groupClassPage->shouldNotReceive('render');

        self::assertStringContainsString('us-booking-app', $this->registrar->renderBooking());
        self::assertStringContainsString('us-login-form', $this->registrar->renderLogin());
        self::assertStringContainsString('us-register-form', $this->registrar->renderRegistration());
        self::assertStringContainsString('us-group-app', $this->registrar->renderGroupClasses());
    }

    public function testIsEditorPreviewIsFalseOutsideRestRequests(): void
    {
        // REST_REQUEST is undefined in the test process, so the real
        // registrar must take the front-end path.
        $registrar = new BlockRegistrar(
            $this->bookingPage,
            $this->loginPage,
            $this->registrationPage,
            $this->groupClassPage,
        );

        $this->bookingPage->shouldReceive('render')->once()->with([])->andReturn('live');

        self::assertSame('live', $registrar->renderBooking());
    }
}