<?php

declare(strict_types=1);

namespace App\Tests\Security\RequiredCheck;

use App\RequiredTeamerCheck\RecurringDeadlines;
use Carbon\CarbonImmutable;
use PHPUnit\Framework\TestCase;

class RecurringDeadlinesTest extends TestCase
{
    protected function setUp(): void
    {
        CarbonImmutable::setTestNow();
    }

    protected function tearDown(): void
    {
        CarbonImmutable::setTestNow();
    }

    public function testAnEmptyScheduleIsNeverDue(): void
    {
        $deadlines = new RecurringDeadlines([]);

        $this->assertFalse($deadlines->isDue(null, new \DateTimeImmutable('2020-01-01'), CarbonImmutable::parse('2026-08-10')));
        $this->assertNull($deadlines->getCurrentDeadline(CarbonImmutable::parse('2026-08-10')));
    }

    public function testIsNotDueBeforeTheFirstDeadlineEvenWhenNeverConfirmed(): void
    {
        $deadlines = new RecurringDeadlines(['01-15', '07-15']);

        $this->assertFalse($deadlines->isDue(
            null,
            new \DateTimeImmutable('2025-11-05 12:00:00'),
            CarbonImmutable::parse('2026-01-10 12:00:00'),
        ));
    }

    public function testIsDueAfterTheFirstDeadlineWhenNeverConfirmed(): void
    {
        $deadlines = new RecurringDeadlines(['01-15', '07-15']);

        $this->assertTrue($deadlines->isDue(
            null,
            new \DateTimeImmutable('2025-11-05 12:00:00'),
            CarbonImmutable::parse('2026-01-20 12:00:00'),
        ));
    }

    public function testIsNotDueWhenConfirmedAfterTheCurrentDeadline(): void
    {
        $deadlines = new RecurringDeadlines(['01-15', '07-15']);

        $this->assertFalse($deadlines->isDue(
            new \DateTimeImmutable('2026-01-16 10:00:00'),
            new \DateTimeImmutable('2025-11-05 12:00:00'),
            CarbonImmutable::parse('2026-05-20 12:00:00'),
        ));
    }

    public function testIsDueWhenTheConfirmationPredatesTheCurrentDeadline(): void
    {
        $deadlines = new RecurringDeadlines(['01-15', '07-15']);

        $this->assertTrue($deadlines->isDue(
            new \DateTimeImmutable('2026-02-01 10:00:00'),
            new \DateTimeImmutable('2025-11-05 12:00:00'),
            CarbonImmutable::parse('2026-07-20 12:00:00'),
        ));
    }

    public function testIsNotDueWhenRegisteredAfterTheFirstDeadline(): void
    {
        $deadlines = new RecurringDeadlines(['01-15', '07-15']);

        $this->assertFalse($deadlines->isDue(
            null,
            new \DateTimeImmutable('2026-03-01 10:00:00'),
            CarbonImmutable::parse('2026-05-20 12:00:00'),
        ));
    }

    public function testIsNotDueWhenRegisteredAfterTheSecondDeadline(): void
    {
        $deadlines = new RecurringDeadlines(['01-15', '07-15']);

        $this->assertFalse($deadlines->isDue(
            null,
            new \DateTimeImmutable('2026-10-01 10:00:00'),
            CarbonImmutable::parse('2026-11-20 12:00:00'),
        ));
    }

    public function testIsDueWhenRegisteredBeforeAllCurrentYearDeadlines(): void
    {
        $deadlines = new RecurringDeadlines(['01-15', '07-15']);

        $this->assertTrue($deadlines->isDue(
            null,
            new \DateTimeImmutable('2025-10-01 10:00:00'),
            CarbonImmutable::parse('2026-11-20 12:00:00'),
        ));
    }

    public function testAMissingRegistrationDateDoesNotExempt(): void
    {
        $deadlines = new RecurringDeadlines(['01-15', '07-15']);

        $this->assertTrue($deadlines->isDue(null, null, CarbonImmutable::parse('2026-01-20 12:00:00')));
    }

    public function testGetCurrentDeadlineReturnsTheMostRecentlyPassedOne(): void
    {
        $deadlines = new RecurringDeadlines(['01-15', '07-15']);

        $this->assertSame(
            '2026-07-15',
            $deadlines->getCurrentDeadline(CarbonImmutable::parse('2026-08-10'))?->format('Y-m-d'),
        );
        $this->assertNull($deadlines->getCurrentDeadline(CarbonImmutable::parse('2026-01-10')));
    }
}