<?php

declare(strict_types=1);

use App\Services\Sales\SalesPeriodRange;
use App\Services\Sales\SalesPeriodResolver;
use Carbon\CarbonImmutable;

// Заморозка времени: 15 июня 2026, 12:00 МСК
beforeEach(function (): void {
    CarbonImmutable::setTestNow(
        CarbonImmutable::parse('2026-06-15 12:00:00', 'Europe/Moscow'),
    );
});

afterEach(function (): void {
    CarbonImmutable::setTestNow();
});

// ─── kind=this ────────────────────────────────────────────────────────────────

it('kind=this returns current month range (June 2026)', function (): void {
    $resolver = new SalesPeriodResolver;
    $range = $resolver->resolve(['kind' => 'this']);

    expect($range)->toBeInstanceOf(SalesPeriodRange::class);
    expect($range->start->format('Y-m-d H:i:s'))->toBe('2026-06-01 00:00:00');
    expect($range->end->format('Y-m-d H:i:s'))->toBe('2026-06-30 23:59:59');
});

// ─── kind=prev ────────────────────────────────────────────────────────────────

it('kind=prev returns previous month range (May 2026)', function (): void {
    $resolver = new SalesPeriodResolver;
    $range = $resolver->resolve(['kind' => 'prev']);

    expect($range->start->format('Y-m-d H:i:s'))->toBe('2026-05-01 00:00:00');
    expect($range->end->format('Y-m-d H:i:s'))->toBe('2026-05-31 23:59:59');
});

// ─── kind=prev2 ───────────────────────────────────────────────────────────────

it('kind=prev2 returns month-before-previous range (April 2026)', function (): void {
    $resolver = new SalesPeriodResolver;
    $range = $resolver->resolve(['kind' => 'prev2']);

    expect($range->start->format('Y-m-d H:i:s'))->toBe('2026-04-01 00:00:00');
    expect($range->end->format('Y-m-d H:i:s'))->toBe('2026-04-30 23:59:59');
});

// ─── kind=custom ──────────────────────────────────────────────────────────────

it('kind=custom returns exact from/to bounds', function (): void {
    $resolver = new SalesPeriodResolver;
    $range = $resolver->resolve([
        'kind' => 'custom',
        'from' => '2026-03-10',
        'to' => '2026-05-20',
    ]);

    expect($range->start->format('Y-m-d H:i:s'))->toBe('2026-03-10 00:00:00');
    expect($range->end->format('Y-m-d H:i:s'))->toBe('2026-05-20 23:59:59');
});

it('kind=custom: monthsIn returns all three month-starts for Mar-May span', function (): void {
    $resolver = new SalesPeriodResolver;
    $range = $resolver->resolve([
        'kind' => 'custom',
        'from' => '2026-03-10',
        'to' => '2026-05-20',
    ]);

    $months = $resolver->monthsIn($range);

    expect($months)->toHaveCount(3);
    expect($months[0]->format('Y-m-d'))->toBe('2026-03-01');
    expect($months[1]->format('Y-m-d'))->toBe('2026-04-01');
    expect($months[2]->format('Y-m-d'))->toBe('2026-05-01');
});

it('kind=custom: throws InvalidArgumentException when from > to', function (): void {
    $resolver = new SalesPeriodResolver;
    expect(fn () => $resolver->resolve([
        'kind' => 'custom',
        'from' => '2026-05-20',
        'to' => '2026-03-10',
    ]))->toThrow(InvalidArgumentException::class);
});

it('kind=custom: throws InvalidArgumentException when from is missing', function (): void {
    $resolver = new SalesPeriodResolver;
    expect(fn () => $resolver->resolve([
        'kind' => 'custom',
        'to' => '2026-05-20',
    ]))->toThrow(InvalidArgumentException::class);
});

it('kind=custom: throws InvalidArgumentException when to is missing', function (): void {
    $resolver = new SalesPeriodResolver;
    expect(fn () => $resolver->resolve([
        'kind' => 'custom',
        'from' => '2026-03-10',
    ]))->toThrow(InvalidArgumentException::class);
});

// ─── monthsIn ─────────────────────────────────────────────────────────────────

it('monthsIn for single-month "this" range returns one entry (June 2026)', function (): void {
    $resolver = new SalesPeriodResolver;
    $range = $resolver->resolve(['kind' => 'this']);

    $months = $resolver->monthsIn($range);

    expect($months)->toHaveCount(1);
    expect($months[0]->format('Y-m-d'))->toBe('2026-06-01');
});

// ─── timezone ─────────────────────────────────────────────────────────────────

it('range start carries Europe/Moscow timezone', function (): void {
    $resolver = new SalesPeriodResolver;
    $range = $resolver->resolve(['kind' => 'this']);

    expect($range->start->timezoneName)->toBe('Europe/Moscow');
});