<?php
declare(strict_types=1);

namespace Unsupervised\Schedular\Tests\Unit\Booking;

use Brain\Monkey\Functions;
use Mockery;
use Unsupervised\Schedular\Booking\BookingRepository;
use Unsupervised\Schedular\Booking\Lesson;
use Unsupervised\Schedular\Tests\Unit\TestCase;

class BookingRepositoryTest extends TestCase
{
    private \wpdb $db;
    private BookingRepository $repo;

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

        $this->db         = Mockery::mock(\wpdb::class);
        $this->db->prefix = 'wp_';
        $this->repo       = new BookingRepository($this->db);
    }

    public function testInsertCallsWpdbInsertAndReturnsId(): void
    {
        Functions\expect('current_time')->with('mysql')->andReturn('2026-04-01 12:00:00');

        $this->db->shouldReceive('insert')
            ->once()
            ->with(
                'wp_us_lessons',
                Mockery::on(static function (array $data): bool {
                    return $data['slot_id'] === 10
                        && $data['student_id'] === 5
                        && $data['offering_id'] === 7
                        && $data['recurrence'] === Lesson::RECURRENCE_SINGLE
                        && $data['status'] === Lesson::STATUS_PENDING;
                }),
                ['%d', '%d', '%d', '%d', '%s', '%d', '%s', '%d', '%s', '%s']
            );

        $this->db->insert_id = 77;

        $lesson = new Lesson(slotId: 10, studentId: 5, instructorId: 3, offeringId: 7);
        $result = $this->repo->insert($lesson);

        self::assertSame(77, $result);
    }

    public function testInsertSeriesSharesSeriesIdAcrossSlots(): void
    {
        Functions\when('current_time')->justReturn('2026-04-01 12:00:00');

        $ids = [40, 41, 42];
        $this->db->shouldReceive('insert')
            ->times(3)
            ->andReturnUsing(function () use (&$ids): void {
                $this->db->insert_id = array_shift($ids);
            });

        // The first lesson is back-filled with its own id as the series id.
        $this->db->shouldReceive('update')
            ->once()
            ->with('wp_us_lessons', ['series_id' => 40], ['id' => 40], ['%d'], ['%d']);

        $template = new Lesson(slotId: 0, studentId: 5, instructorId: 3, offeringId: 7);
        $result   = $this->repo->insertSeries($template, [100, 101, 102]);

        self::assertSame([40, 41, 42], $result);
    }

    public function testFindByIdReturnsNullWhenNotFound(): void
    {
        $this->db->shouldReceive('prepare')->andReturn('SELECT ...');
        $this->db->shouldReceive('get_row')->andReturn(null);

        self::assertNull($this->repo->findById(99));
    }

    public function testFindByIdReturnsLesson(): void
    {
        $row = (object) [
            'id'            => '15',
            'slot_id'       => '10',
            'offering_id'   => null,
            'student_id'    => '5',
            'instructor_id' => '3',
            'recurrence'    => Lesson::RECURRENCE_SINGLE,
            'series_id'     => null,
            'status'        => 'pending',
            'payment_id'    => null,
            'notes'         => null,
        ];

        $this->db->shouldReceive('prepare')->andReturn('SELECT ...');
        $this->db->shouldReceive('get_row')->andReturn($row);

        $lesson = $this->repo->findById(15);

        self::assertInstanceOf(Lesson::class, $lesson);
        self::assertSame(15, $lesson->id);
    }

    public function testUpdateStatusReturnsFalseForInvalidStatus(): void
    {
        $result = $this->repo->updateStatus(1, 'invalid');
        self::assertFalse($result);
    }

    public function testUpdateStatusCallsWpdbUpdate(): void
    {
        $this->db->shouldReceive('update')
            ->once()
            ->with(
                'wp_us_lessons',
                ['status' => Lesson::STATUS_CONFIRMED],
                ['id' => 1],
                ['%s'],
                ['%d']
            )
            ->andReturn(1);

        self::assertTrue($this->repo->updateStatus(1, Lesson::STATUS_CONFIRMED));
    }

    public function testUpdateStatusReturnsFalseWhenDbFails(): void
    {
        $this->db->shouldReceive('update')->andReturn(0);

        self::assertFalse($this->repo->updateStatus(1, Lesson::STATUS_CONFIRMED));
    }

    public function testCountUpcomingForStudent(): void
    {
        Functions\when('current_time')->justReturn('2026-06-08 12:00:00');

        $this->db->shouldReceive('prepare')
            ->once()
            ->with(Mockery::pattern('/COUNT\(\*\).*l.student_id = %d.*a.start_dt >= %s/s'), 5, Lesson::STATUS_CANCELLED, '2026-06-08 12:00:00')
            ->andReturn('SELECT ...');

        $this->db->shouldReceive('get_var')->andReturn('3');

        self::assertSame(3, $this->repo->countUpcomingForStudent(5));
    }

    public function testFindByStudentReturnsLessons(): void
    {
        $row = (object) [
            'id'            => '1',
            'slot_id'       => '2',
            'offering_id'   => null,
            'student_id'    => '5',
            'instructor_id' => '3',
            'recurrence'    => Lesson::RECURRENCE_SINGLE,
            'series_id'     => null,
            'status'        => 'pending',
            'payment_id'    => null,
            'notes'         => null,
        ];

        $this->db->shouldReceive('prepare')->andReturn('SELECT ...');
        $this->db->shouldReceive('get_results')->andReturn([$row]);

        $lessons = $this->repo->findByStudent(5);

        self::assertCount(1, $lessons);
        self::assertInstanceOf(Lesson::class, $lessons[0]);
    }
}