<?php

declare(strict_types=1);

use Domain\Models\ValueObjects\DatePeriod;

describe('DatePeriod', function (): void {
    it('creates a period with null dates', function (): void {
        // GIVEN
        $period = new DatePeriod();

        // WHEN
        $isActive = $period->isActiveAt();

        // THEN
        expect($period->start)->toBeNull()
            ->and($period->end)->toBeNull()
            ->and($isActive)->toBeTrue();
    });

    it('creates a period with start and end dates', function (): void {
        // GIVEN
        $start = new \DateTimeImmutable('2026-01-01 00:00:00');
        $end   = new \DateTimeImmutable('2026-12-31 23:59:59');

        // WHEN
        $period = new DatePeriod($start, $end);

        // THEN
        expect($period->start)->toEqual($start)
            ->and($period->end)->toEqual($end);
    });

    it('throws when start date is after end date', function (): void {
        // GIVEN
        $start = new \DateTimeImmutable('2026-12-31 23:59:59');
        $end   = new \DateTimeImmutable('2026-01-01 00:00:00');

        // WHEN
        expect(fn () => new DatePeriod($start, $end))
            // THEN
            ->toThrow(\InvalidArgumentException::class, 'The start date must be before or equal to the end date.');
    });

    it('evaluates isActiveAt correctly', function (): void {
        // GIVEN
        $start  = new \DateTimeImmutable('2026-06-01 00:00:00');
        $end    = new \DateTimeImmutable('2026-06-30 23:59:59');
        $period = new DatePeriod($start, $end);

        // WHEN
        $before = $period->isActiveAt(new \DateTimeImmutable('2026-05-31 23:59:59'));
        $during = $period->isActiveAt(new \DateTimeImmutable('2026-06-15 12:00:00'));
        $after  = $period->isActiveAt(new \DateTimeImmutable('2026-07-01 00:00:00'));

        // THEN
        expect($before)->toBeFalse()
            ->and($during)->toBeTrue()
            ->and($after)->toBeFalse();
    });

    it('evaluates isActiveAt with only start date', function (): void {
        // GIVEN
        $start  = new \DateTimeImmutable('2026-06-01 00:00:00');
        $period = new DatePeriod(start: $start);

        // WHEN
        $before = $period->isActiveAt(new \DateTimeImmutable('2026-05-31 23:59:59'));
        $during = $period->isActiveAt(new \DateTimeImmutable('2026-06-15 12:00:00'));

        // THEN
        expect($before)->toBeFalse()
            ->and($during)->toBeTrue();
    });

    it('evaluates isActiveAt with only end date', function (): void {
        // GIVEN
        $end    = new \DateTimeImmutable('2026-06-30 23:59:59');
        $period = new DatePeriod(end: $end);

        // WHEN
        $during = $period->isActiveAt(new \DateTimeImmutable('2026-06-15 12:00:00'));
        $after  = $period->isActiveAt(new \DateTimeImmutable('2026-07-01 00:00:00'));

        // THEN
        expect($during)->toBeTrue()
            ->and($after)->toBeFalse();
    });
});