<?php

use App\Models\Country;
use App\Models\Setting;
use App\Models\Shipping;
use App\Models\ShippingCountry;
use App\Models\ShippingPrice;
use App\Models\UserAboItem;
use App\Models\UserAboOneTimeItem;
use App\Services\AboOneTimeService;
use App\Services\AboOrderCart;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\DB;

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

/**
 * Versandland mit zwei Gewichtsstufen: 1–1000 g (4,90 €) und 1001–2000 g (9,90 €).
 * Maximalgewicht = 2000 g.
 */
function makeShopEnvWithWeightTiers(): ShippingCountry
{
    $country = Country::create([
        'code' => 'DE', 'phone' => '49', 'en' => 'Germany', 'de' => 'Deutschland',
        'es' => 'Alemania', 'fr' => 'Allemagne', 'it' => 'Germania', 'ru' => 'Германия',
    ]);
    $shipping = Shipping::create(['name' => 'Standard', 'active' => true]);

    ShippingPrice::create([
        'shipping_id' => $shipping->id, 'price' => 4.90, 'price_comp' => 0, 'num_comp' => 0,
        'tax_rate' => 19, 'weight_from' => 1, 'weight_to' => 1000,
    ]);
    ShippingPrice::create([
        'shipping_id' => $shipping->id, 'price' => 9.90, 'price_comp' => 0, 'num_comp' => 0,
        'tax_rate' => 19, 'weight_from' => 1001, 'weight_to' => 2000,
    ]);

    return ShippingCountry::create(['shipping_id' => $shipping->id, 'country_id' => $country->id]);
}

function makeShopEnvWithCompWeightTiers(): ShippingCountry
{
    $country = Country::create([
        'code' => 'DE', 'phone' => '49', 'en' => 'Germany', 'de' => 'Deutschland',
        'es' => 'Alemania', 'fr' => 'Allemagne', 'it' => 'Germania', 'ru' => 'Германия',
    ]);
    $shipping = Shipping::create(['name' => 'Standard', 'active' => true]);

    ShippingPrice::create([
        'shipping_id' => $shipping->id, 'price' => 4.90, 'price_comp' => 4.90, 'num_comp' => 0,
        'tax_rate' => 19, 'weight_from' => 1, 'weight_to' => 1000,
    ]);
    ShippingPrice::create([
        'shipping_id' => $shipping->id, 'price' => 9.90, 'price_comp' => 9.90, 'num_comp' => 2,
        'tax_rate' => 19, 'weight_from' => 1001, 'weight_to' => 2000,
    ]);

    return ShippingCountry::create(['shipping_id' => $shipping->id, 'country_id' => $country->id]);
}

describe('Yard Maximalgewicht', function () {
    beforeEach(function () {
        $this->shippingCountry = makeShopEnvWithWeightTiers();
    });

    it('liefert das höchste weight_to als Maximalgewicht', function () {
        $yard = Yard::instance('test-maxweight');
        $yard->destroy();
        $yard->setShippingCountryWithPrice($this->shippingCountry->id);

        expect($yard->getMaxWeight())->toBe(2000);

        $yard->destroy();
    });

    it('erkennt das Überschreiten des Maximalgewichts', function () {
        $yard = Yard::instance('test-maxweight');
        $yard->destroy();
        $yard->setShippingCountryWithPrice($this->shippingCountry->id);

        $yard->add(1, 'A', 1, 10.0, false, false, ['weight' => 1500]);

        expect($yard->exceedsMaxWeight(0))->toBeFalse()
            ->and($yard->exceedsMaxWeight(500))->toBeFalse()
            ->and($yard->exceedsMaxWeight(501))->toBeTrue();

        $yard->destroy();
    });

    it('nutzt bei Überschreitung die teuerste Stufe statt der günstigsten', function () {
        $yard = Yard::instance('test-maxweight');
        $yard->destroy();
        $yard->setShippingCountryWithPrice($this->shippingCountry->id);

        // Gewicht 3000 g liegt über der höchsten Stufe (2000 g)
        $yard->add(1, 'A', 1, 10.0, false, false, ['weight' => 3000]);
        $yard->reCalculateShippingPrice();

        expect((float) $yard->getShippingPrice())->toBe(9.90);

        $yard->destroy();
    });
});

describe('AboOrderCart Maximalgewicht', function () {
    beforeEach(function () {
        makeShopEnvWithWeightTiers();
        $this->service = new AboOneTimeService;
    });

    it('berechnet das kombinierte Gewicht aus Einmal-Artikeln', function () {
        $abo = makeMeAbo();
        $product = makeProduct(['2']); // weight 500

        $this->service->handleAction($abo, ['action' => 'add', 'product_id' => $product->id]);

        expect(AboOrderCart::combinedWeight($abo->fresh()))->toBe(500);
    });

    it('stoppt das Hinzufügen, wenn das Maximalgewicht überschritten würde', function () {
        $abo = makeMeAbo();
        $product = makeProduct(['2']); // weight 500, max 2000 => max 4 Stück

        for ($i = 0; $i < 4; $i++) {
            $message = $this->service->handleAction($abo, ['action' => 'add', 'product_id' => $product->id]);
            expect($message)->toBeNull();
        }

        // 5. Stück => 2500 g > 2000 g
        $message = $this->service->handleAction($abo, ['action' => 'add', 'product_id' => $product->id]);

        expect($message)->toBe(__('msg.cart_max_weight_reached'))
            ->and(UserAboOneTimeItem::where('user_abo_id', $abo->id)->first()->qty)->toBe(4);
    });

    it('stoppt das Hochsetzen der Menge bei Überschreitung, erlaubt aber gültige Mengen', function () {
        $abo = makeMeAbo();
        $product = makeProduct(['2']); // weight 500
        $this->service->handleAction($abo, ['action' => 'add', 'product_id' => $product->id]);
        $item = UserAboOneTimeItem::where('user_abo_id', $abo->id)->first();

        // qty 4 => 2000 g (ok)
        $okMessage = $this->service->handleAction($abo, ['action' => 'update', 'one_time_item_id' => $item->id, 'qty' => 4]);
        expect($okMessage)->toBeNull()
            ->and($item->fresh()->qty)->toBe(4);

        // qty 5 => 2500 g (zu schwer)
        $failMessage = $this->service->handleAction($abo, ['action' => 'update', 'one_time_item_id' => $item->id, 'qty' => 5]);
        expect($failMessage)->toBe(__('msg.cart_max_weight_reached'))
            ->and($item->fresh()->qty)->toBe(4);
    });

    it('erlaubt das Reduzieren der Menge immer', function () {
        $abo = makeMeAbo();
        $product = makeProduct(['2']);
        $this->service->handleAction($abo, ['action' => 'add', 'product_id' => $product->id]);
        $item = UserAboOneTimeItem::where('user_abo_id', $abo->id)->first();
        $this->service->handleAction($abo, ['action' => 'update', 'one_time_item_id' => $item->id, 'qty' => 4]);

        $message = $this->service->handleAction($abo, ['action' => 'update', 'one_time_item_id' => $item->id, 'qty' => 2]);

        expect($message)->toBeNull()
            ->and($item->fresh()->qty)->toBe(2);
    });
});

describe('AboOrderCart Kompensationsprodukte', function () {
    beforeEach(function () {
        $this->shippingCountry = makeShopEnvWithCompWeightTiers();
        Setting::setContentBySlug('is_comp_me_abo', true, 'bool');
    });

    it('erhöht die Kompensationsprodukte, wenn die höhere Versandstufe mehr verlangt', function () {
        $abo = makeMeAbo();
        $compProduct = makeProduct(['12']);
        DB::table('products')->where('id', $compProduct->id)->update(['shipping_addon' => true, 'pos' => 100]);

        $yard = Yard::instance(AboOrderCart::INSTANCE);
        $yard->destroy();
        $yard->setShippingCountryWithPrice($this->shippingCountry->id, 'abo-me');
        $yard->add(1, 'Abo-Produkt', 1, 10.0, false, false, ['weight' => 1500]);
        $yard->reCalculateShippingPrice();

        AboOrderCart::checkNumOfCompProducts($abo);

        expect(UserAboItem::where('user_abo_id', $abo->id)->where('comp', '>', 0)->count())->toBe(2)
            ->and(UserAboItem::where('user_abo_id', $abo->id)->where('comp', '>', 0)->pluck('comp')->all())->toBe([1, 2]);

        $yard->destroy();
    });

    it('entfernt Kompensationsprodukte wieder, wenn keine mehr benötigt werden', function () {
        $abo = makeMeAbo();
        $compProduct = makeProduct(['12']);
        DB::table('products')->where('id', $compProduct->id)->update(['shipping_addon' => true, 'pos' => 100]);

        UserAboItem::create(['user_abo_id' => $abo->id, 'product_id' => $compProduct->id, 'comp' => 1, 'qty' => 1, 'status' => 1]);
        UserAboItem::create(['user_abo_id' => $abo->id, 'product_id' => $compProduct->id, 'comp' => 2, 'qty' => 1, 'status' => 1]);

        $yard = Yard::instance(AboOrderCart::INSTANCE);
        $yard->destroy();
        $yard->setShippingCountryWithPrice($this->shippingCountry->id, 'abo-me');
        $yard->add(1, 'Abo-Produkt', 1, 10.0, false, false, ['weight' => 500]);
        $yard->reCalculateShippingPrice();

        AboOrderCart::checkNumOfCompProducts($abo);

        expect(UserAboItem::where('user_abo_id', $abo->id)->where('comp', '>', 0)->count())->toBe(0);

        $yard->destroy();
    });

    it('zeigt einen Hinweis für Kompensationsprodukte aus Zusatzprodukten', function () {
        $compProduct = makeProduct(['12']);

        $yard = Yard::instance(AboOrderCart::INSTANCE);
        $yard->destroy();
        $yard->setShippingCountryWithPrice($this->shippingCountry->id, 'abo-me');
        $yard->add(1, 'Abo-Produkt', 1, 10.0, false, false, ['weight' => 1500]);
        $yard->reCalculateShippingPrice();

        $html = view('user.order.comp_product', [
            'comp_products' => collect([$compProduct]),
            'cart_instance' => AboOrderCart::INSTANCE,
            'base_comp_count' => 0,
        ])->render();

        expect($html)->toContain(__('order.comp_required_by_additional_products'));

        $yard->destroy();
    });
});