<?php

use App\Models\Setting;
use App\Models\UserSalesVolume;
use App\Services\BusinessPlan\SalesPointsVolume;
use App\User;
use Carbon\Carbon;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

uses(TestCase::class, RefreshDatabase::class);

beforeEach(function () {
    Carbon::setTestNow('2026-09-09 12:00:00');
});

afterEach(function () {
    Carbon::setTestNow();
});

function stornoUser(): User
{
    return User::forceCreate([
        'email' => 'storno-'.uniqid().'@example.test',
        'password' => bcrypt('secret'),
        'lang' => 'de',
        'admin' => 0,
        'm_level' => 1,
    ]);
}

function stornoVolume(User $user, int $month, int $year, float $points = 100.0): UserSalesVolume
{
    return UserSalesVolume::forceCreate([
        'user_id' => $user->id,
        'user_invoice_id' => 4711,
        'month' => $month,
        'year' => $year,
        'date' => sprintf('%d-%02d-05', $year, $month),
        'points' => $points,
        'total_net' => $points,
        'status' => 2,
        'status_points' => 1,
        'status_turnover' => 1,
    ]);
}

it('bucht den Storno, solange der Monat der Ursprungsbuchung noch laeuft', function () {
    $user = stornoUser();
    $original = stornoVolume($user, 9, 2026);

    $cancellation = SalesPointsVolume::cancelSalesPointsVolume($original, 9911);

    expect($cancellation)->not->toBeNull()
        ->and((float) $cancellation->points)->toBe(-100.0)
        ->and((int) $cancellation->status)->toBe(6)
        ->and((int) $cancellation->month)->toBe(9)
        ->and((int) $cancellation->year)->toBe(2026);

    expect(UserSalesVolume::where('user_id', $user->id)->where('status', 6)->count())->toBe(1);
});

it('laesst einen abgeschlossenen Monat unveraendert', function () {
    $user = stornoUser();
    $original = stornoVolume($user, 8, 2026);

    $cancellation = SalesPointsVolume::cancelSalesPointsVolume($original, 9911);

    expect($cancellation)->toBeNull()
        ->and(UserSalesVolume::where('user_id', $user->id)->where('status', 6)->count())->toBe(0);
});

it('behandelt denselben Monat im Vorjahr als abgeschlossen', function () {
    $user = stornoUser();
    $original = stornoVolume($user, 9, 2025);

    expect(SalesPointsVolume::isStornoMonthOpen($original))->toBeFalse()
        ->and(SalesPointsVolume::cancelSalesPointsVolume($original, 9911))->toBeNull();
});

it('zieht abgeschlossene Monate im laufenden Monat ab, wenn der Schalter gesetzt ist', function () {
    Setting::setContentBySlug(SalesPointsVolume::SETTING_STORNO_CURRENT_MONTH, 1, 'bool');

    $user = stornoUser();
    $original = stornoVolume($user, 8, 2026);

    $cancellation = SalesPointsVolume::cancelSalesPointsVolume($original, 9911);

    expect($cancellation)->not->toBeNull()
        ->and((float) $cancellation->points)->toBe(-100.0)
        ->and((int) $cancellation->month)->toBe(9)
        ->and((int) $cancellation->year)->toBe(2026);
});

it('ist ohne gesetzten Schalter ausgeschaltet', function () {
    expect(SalesPointsVolume::stornoDeductsInCurrentMonth())->toBeFalse();

    Setting::setContentBySlug(SalesPointsVolume::SETTING_STORNO_CURRENT_MONTH, 0, 'bool');
    expect(SalesPointsVolume::stornoDeductsInCurrentMonth())->toBeFalse();

    Setting::setContentBySlug(SalesPointsVolume::SETTING_STORNO_CURRENT_MONTH, 1, 'bool');
    expect(SalesPointsVolume::stornoDeductsInCurrentMonth())->toBeTrue();
});

it('folgt der Anwendungsuhr, nicht der Systemuhr', function () {
    // Bewusst ein anderer Kalendermonat als der des Testlaufs: die Regel darf
    // nicht davon abhaengen, welchen Monat der Server gerade zeigt.
    Carbon::setTestNow('2027-03-15 09:00:00');

    $user = stornoUser();
    $imLaufendenMonat = stornoVolume($user, 3, 2027);
    $imVormonat = stornoVolume($user, 2, 2027);

    expect(SalesPointsVolume::isStornoMonthOpen($imLaufendenMonat))->toBeTrue()
        ->and(SalesPointsVolume::isStornoMonthOpen($imVormonat))->toBeFalse();

    $cancellation = SalesPointsVolume::cancelSalesPointsVolume($imLaufendenMonat, 9911);

    expect((int) $cancellation->month)->toBe(3)
        ->and((int) $cancellation->year)->toBe(2027)
        ->and($cancellation->message)->toBe('Storniert am 15.03.2027');
});