<?php
declare(strict_types=1);

namespace Unsupervised\Schedular\Tests\Unit\Offering;

use Brain\Monkey\Functions;
use Mockery;
use Unsupervised\Schedular\Auth\RoleManager;
use Unsupervised\Schedular\GroupClass\GroupAccessRepository;
use Unsupervised\Schedular\Offering\Offering;
use Unsupervised\Schedular\Offering\OfferingEndpoint;
use Unsupervised\Schedular\Offering\OfferingRepository;
use Unsupervised\Schedular\Tests\Unit\TestCase;

class OfferingEndpointTest extends TestCase
{
    private OfferingRepository&Mockery\MockInterface $repository;
    private GroupAccessRepository&Mockery\MockInterface $access;
    private OfferingEndpoint $endpoint;

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

        Functions\when('get_current_user_id')->justReturn(5);
        Functions\when('get_userdata')->justReturn((object) ['display_name' => 'Ada Lovelace']);

        $this->repository = Mockery::mock(OfferingRepository::class);
        $this->access     = Mockery::mock(GroupAccessRepository::class);
        $this->endpoint   = new OfferingEndpoint($this->repository, $this->access);
    }

    private function group(int $id, string $access): Offering
    {
        return new Offering(instructorId: 3, kind: Offering::KIND_GROUP_CLASS, title: "Class $id", accessMode: $access, id: $id);
    }

    public function testIndexReturnsPublicOfferingsOnlyWhenNoGrants(): void
    {
        $this->repository->shouldReceive('findAll')
            ->once()
            ->with(0, '', Mockery::on(static fn ($v): bool => true === $v), Offering::ACCESS_PUBLIC)
            ->andReturn([$this->group(1, Offering::ACCESS_PUBLIC)]);
        $this->access->shouldReceive('findGrantedOfferingIds')->with(5)->andReturn([]);

        $data = $this->endpoint->index(new \WP_REST_Request())->get_data();

        self::assertCount(1, $data);
        self::assertSame(1, $data[0]['id']);
    }

    public function testIndexMergesGrantedInviteOnlyOfferings(): void
    {
        $this->repository->shouldReceive('findAll')
            ->once()
            ->with(0, '', Mockery::any(), Offering::ACCESS_PUBLIC)
            ->andReturn([$this->group(1, Offering::ACCESS_PUBLIC)]);
        $this->access->shouldReceive('findGrantedOfferingIds')->with(5)->andReturn([8]);
        $this->repository->shouldReceive('findById')->with(8)->andReturn($this->group(8, Offering::ACCESS_INVITE_ONLY));

        $data = $this->endpoint->index(new \WP_REST_Request())->get_data();

        self::assertSame([1, 8], array_column($data, 'id'));
    }

    public function testIndexOmitsGrantedOfferingThatIsNoLongerInviteOnly(): void
    {
        $this->repository->shouldReceive('findAll')->andReturn([]);
        $this->access->shouldReceive('findGrantedOfferingIds')->with(5)->andReturn([8]);
        // Grant persists but the class was flipped back to public — it is already
        // in the public list, so it must not be appended a second time.
        $this->repository->shouldReceive('findById')->with(8)->andReturn($this->group(8, Offering::ACCESS_PUBLIC));

        $data = $this->endpoint->index(new \WP_REST_Request())->get_data();

        self::assertSame([], $data);
    }

    public function testIndexRespectsKindFilterForGrantedOfferings(): void
    {
        $this->repository->shouldReceive('findAll')
            ->with(0, Offering::KIND_PRIVATE_LESSON, Mockery::any(), Offering::ACCESS_PUBLIC)
            ->andReturn([]);
        $this->access->shouldReceive('findGrantedOfferingIds')->with(5)->andReturn([8]);
        // Granted class is a group class; the request filters to private lessons.
        $this->repository->shouldReceive('findById')->with(8)->andReturn($this->group(8, Offering::ACCESS_INVITE_ONLY));

        $data = $this->endpoint->index(new \WP_REST_Request(['kind' => Offering::KIND_PRIVATE_LESSON]))->get_data();

        self::assertSame([], $data);
    }

    public function testIndexIncludesInstructorNameForEachOffering(): void
    {
        $instructor = Mockery::mock(\WP_User::class);
        $instructor->first_name   = 'Ada';
        $instructor->last_name    = 'Lovelace';
        $instructor->nickname     = 'ada_login';
        $instructor->display_name = 'ada_login';
        Functions\when('get_userdata')->justReturn($instructor);

        $this->repository->shouldReceive('findAll')->andReturn([$this->group(1, Offering::ACCESS_PUBLIC)]);
        $this->access->shouldReceive('findGrantedOfferingIds')->with(5)->andReturn([]);

        $data = $this->endpoint->index(new \WP_REST_Request())->get_data();

        // Real name is shown, not the login-style display name.
        self::assertSame('Ada Lovelace', $data[0]['instructor_name']);
    }

    public function testIndexOmitsEtransferEmailFromPublicListing(): void
    {
        $this->repository->shouldReceive('findAll')->andReturn([
            new Offering(instructorId: 3, kind: Offering::KIND_GROUP_CLASS, title: 'Choir', etransferEmail: 'studio@x.test', id: 1),
        ]);
        $this->access->shouldReceive('findGrantedOfferingIds')->with(5)->andReturn([]);

        $data = $this->endpoint->index(new \WP_REST_Request())->get_data();

        self::assertArrayNotHasKey('etransfer_email', $data[0]);
    }

    public function testCanReadAllowsStudentsWhoMayBook(): void
    {
        Functions\when('is_user_logged_in')->justReturn(true);
        Functions\when('current_user_can')->alias(
            static fn (string $cap): bool => RoleManager::CAP_BOOK_LESSON === $cap
        );

        self::assertTrue($this->endpoint->canRead());
    }

    public function testCanReadAllowsOfferingManagersWhoCannotBook(): void
    {
        Functions\when('is_user_logged_in')->justReturn(true);
        Functions\when('current_user_can')->alias(
            static fn (string $cap): bool => RoleManager::CAP_MANAGE_OFFERINGS === $cap
        );

        self::assertTrue($this->endpoint->canRead());
    }

    public function testCanReadRejectsLoggedInUserWithNeitherCapability(): void
    {
        Functions\when('is_user_logged_in')->justReturn(true);
        Functions\when('current_user_can')->justReturn(false);

        self::assertFalse($this->endpoint->canRead());
    }

    public function testCanReadRejectsLoggedOutVisitors(): void
    {
        Functions\when('is_user_logged_in')->justReturn(false);
        Functions\when('current_user_can')->justReturn(true);

        self::assertFalse($this->endpoint->canRead());
    }

    public function testCreateRejectsTitleLongerThanColumnLimit(): void
    {
        Functions\when('sanitize_text_field')->returnArg();
        Functions\when('sanitize_email')->returnArg();
        $this->repository->shouldNotReceive('insert');

        $request  = new \WP_REST_Request([
            'kind'  => Offering::KIND_GROUP_CLASS,
            'title' => str_repeat('a', Offering::MAX_TITLE_LENGTH + 1),
        ]);
        $response = $this->endpoint->create($request);

        self::assertInstanceOf(\WP_Error::class, $response);
        self::assertSame(400, $response->error_data['invalid_offering']['status']);
    }

    public function testCreateRejectsScheduleNoteLongerThanColumnLimit(): void
    {
        Functions\when('sanitize_text_field')->returnArg();
        Functions\when('sanitize_email')->returnArg();
        $this->repository->shouldNotReceive('insert');

        $request  = new \WP_REST_Request([
            'kind'          => Offering::KIND_GROUP_CLASS,
            'title'         => 'Choir',
            'schedule_note' => str_repeat('a', Offering::MAX_SCHEDULE_NOTE_LENGTH + 1),
        ]);
        $response = $this->endpoint->create($request);

        self::assertInstanceOf(\WP_Error::class, $response);
        self::assertSame(400, $response->error_data['invalid_offering']['status']);
    }
}