<?php

use App\Models\Country;
use App\Models\Product;
use App\Models\ProductBundle;
use App\Models\ShoppingOrder;
use App\Models\ShoppingOrderItem;
use App\Models\ShoppingUser;
use App\Models\UserAccount;
use App\Models\UserInvoice;
use App\Models\UserShop;
use App\Services\SalesVolumeService;
use App\User;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

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

function salesVolumeSeed(): array
{
    $country = Country::create([
        'code' => 'DE',
        'phone' => '49',
        'en' => 'Germany',
        'de' => 'Deutschland',
        'es' => 'Alemania',
        'fr' => 'Allemagne',
        'it' => 'Germania',
        'ru' => 'Германия',
        'eu_country' => true,
    ]);

    $account = UserAccount::create([
        'first_name' => 'Klaus',
        'last_name' => 'Kunde',
        'address' => 'Hauptstrasse 1',
        'zipcode' => '10115',
        'city' => 'Berlin',
        'country_id' => $country->id,
    ]);

    $user = User::forceCreate([
        'account_id' => $account->id,
        'email' => 'klaus@example.com',
        'password' => bcrypt('secret'),
        'lang' => 'de',
    ]);

    $shoppingUser = ShoppingUser::create([
        'auth_user_id' => $user->id,
        'billing_firstname' => 'Klaus',
        'billing_lastname' => 'Kunde',
        'billing_address' => 'Hauptstrasse 1',
        'billing_zipcode' => '10115',
        'billing_city' => 'Berlin',
        'billing_country_id' => $country->id,
        'billing_email' => 'klaus@example.com',
        'shipping_country_id' => $country->id,
        'same_as_billing' => true,
    ]);

    $shop = UserShop::create(['user_id' => $user->id, 'name' => 'Testshop', 'active' => 1]);

    return [$country, $shoppingUser, $shop, $user];
}

function salesVolumeProduct(string $name, string $number, float $price = 16.9): Product
{
    return Product::create([
        'name' => $name,
        'title' => $name,
        'number' => $number,
        'price' => $price,
        'tax' => 19,
        'active' => 1,
    ]);
}

function salesVolumeOrder(array $seed, array $attributes = []): ShoppingOrder
{
    [$country, $shoppingUser, $shop, $user] = $seed;

    return ShoppingOrder::create(array_merge([
        'shopping_user_id' => $shoppingUser->id,
        'auth_user_id' => $user->id,
        'country_id' => $country->id,
        'user_shop_id' => $shop->id,
        'payment_for' => 3,
        'mode' => 'live',
        'txaction' => 'paid',
        'shipped' => 0,
    ], $attributes));
}

it('setzt das Versanddatum beim Wechsel auf versendet', function () {
    $order = salesVolumeOrder(salesVolumeSeed());

    expect($order->shipped_at)->toBeNull();

    $order->shipped = 2;
    $order->save();

    expect($order->fresh()->shipped_at)->not->toBeNull()
        ->and($order->fresh()->shipped_at_source)->toBe(ShoppingOrder::SHIPPED_AT_SOURCE_LIVE);
});

it('ueberschreibt ein vorhandenes Versanddatum nicht', function () {
    $order = salesVolumeOrder(salesVolumeSeed(), [
        'shipped' => 2,
        'shipped_at' => '2026-05-04 10:00:00',
        'shipped_at_source' => ShoppingOrder::SHIPPED_AT_SOURCE_DHL,
    ]);

    $order->tracking = '123';
    $order->save();

    expect($order->fresh()->shipped_at->format('Y-m-d'))->toBe('2026-05-04')
        ->and($order->fresh()->shipped_at_source)->toBe(ShoppingOrder::SHIPPED_AT_SOURCE_DHL);
});

it('zaehlt auf Versandbasis den Monat des Warenausgangs, nicht den der Rechnung', function () {
    $seed = salesVolumeSeed();
    $product = salesVolumeProduct('Aloe Gel', '8020100', 16.9);

    $order = salesVolumeOrder($seed, ['shipped' => 2, 'shipped_at' => '2026-07-03 09:00:00']);
    ShoppingOrderItem::create(['shopping_order_id' => $order->id, 'product_id' => $product->id, 'qty' => 4]);

    // Rechnung liegt im Vormonat (Zahlung Ende Juni), Versand erfolgte im Juli
    UserInvoice::create([
        'shopping_order_id' => $order->id,
        'month' => 6,
        'year' => 2026,
        'date' => '2026-06-30',
        'full_number' => 'RE-1',
        'number' => 1,
    ]);

    $shippingJuly = (new SalesVolumeService(7, 2026, SalesVolumeService::BASIS_SHIPPING))->getProductVolumes();
    $invoiceJuly = (new SalesVolumeService(7, 2026, SalesVolumeService::BASIS_INVOICE))->getProductVolumes();
    $invoiceJune = (new SalesVolumeService(6, 2026, SalesVolumeService::BASIS_INVOICE))->getProductVolumes();

    expect($shippingJuly[$product->id]['value'])->toBe(4)
        ->and($invoiceJuly)->toBeEmpty()
        ->and($invoiceJune[$product->id]['value'])->toBe(4);
});

it('zaehlt externe API-Bestellungen auf Versandbasis mit', function () {
    $seed = salesVolumeSeed();
    $product = salesVolumeProduct('Direktsaft', '6030100', 26.9);

    $order = salesVolumeOrder($seed, [
        'payment_for' => 7,
        'txaction' => 'extern_paid',
        'shipped' => 2,
        'shipped_at' => '2026-07-10 09:00:00',
    ]);
    ShoppingOrderItem::create(['shopping_order_id' => $order->id, 'product_id' => $product->id, 'qty' => 3]);

    $volumes = (new SalesVolumeService(7, 2026, SalesVolumeService::BASIS_SHIPPING))->getProductVolumes();

    expect($volumes[$product->id]['value'])->toBe(3);
});

it('zieht Stornorechnungen ab statt sie zu addieren', function () {
    $seed = salesVolumeSeed();
    $product = salesVolumeProduct('Aloe Gel', '8020100', 16.9);

    $order = salesVolumeOrder($seed, ['shipped' => 2, 'shipped_at' => '2026-07-05 09:00:00']);
    ShoppingOrderItem::create(['shopping_order_id' => $order->id, 'product_id' => $product->id, 'qty' => 2]);

    $invoice = UserInvoice::create([
        'shopping_order_id' => $order->id,
        'month' => 7,
        'year' => 2026,
        'date' => '2026-07-05',
        'full_number' => 'RE-1',
        'number' => 1,
    ]);

    $cancellation = UserInvoice::create([
        'shopping_order_id' => $order->id,
        'month' => 7,
        'year' => 2026,
        'date' => '2026-07-20',
        'full_number' => 'RE-2',
        'number' => 2,
        'cancellation' => true,
    ]);

    $invoice->update(['cancellation' => true, 'cancellation_id' => $cancellation->id]);

    $invoiceBasis = (new SalesVolumeService(7, 2026, SalesVolumeService::BASIS_INVOICE))->getProductVolumes();
    $shippingBasis = (new SalesVolumeService(7, 2026, SalesVolumeService::BASIS_SHIPPING))->getProductVolumes();

    // Rechnung +2, Storno -2; auf Versandbasis Warenausgang +2 und Retoure -2
    expect($invoiceBasis[$product->id]['value'])->toBe(0)
        ->and($shippingBasis[$product->id]['value'])->toBe(0);
});

it('zieht Stornos ohne vorherigen Versand auf Versandbasis nicht ab', function () {
    $seed = salesVolumeSeed();
    $product = salesVolumeProduct('Aloe Gel', '8020100', 16.9);

    $order = salesVolumeOrder($seed, ['shipped' => 10]);
    ShoppingOrderItem::create(['shopping_order_id' => $order->id, 'product_id' => $product->id, 'qty' => 2]);

    UserInvoice::create([
        'shopping_order_id' => $order->id,
        'month' => 7,
        'year' => 2026,
        'date' => '2026-07-20',
        'full_number' => 'RE-2',
        'number' => 2,
        'cancellation' => true,
    ]);

    $volumes = (new SalesVolumeService(7, 2026, SalesVolumeService::BASIS_SHIPPING))->getProductVolumes();

    expect($volumes)->toBeEmpty();
});

it('loest Sets in ihre Anlagen auf', function () {
    $seed = salesVolumeSeed();
    $single = salesVolumeProduct('Direktsaft', '6030100', 26.9);
    $set = salesVolumeProduct('6 x Direktsaft', '5010050', 129.9);
    ProductBundle::create([
        'product_id' => $set->id,
        'bundle_product_id' => $single->id,
        'quantity' => 6,
        'pos' => 1,
    ]);

    $order = salesVolumeOrder($seed, ['shipped' => 2, 'shipped_at' => '2026-07-08 09:00:00']);
    ShoppingOrderItem::create(['shopping_order_id' => $order->id, 'product_id' => $set->id, 'qty' => 2]);
    ShoppingOrderItem::create(['shopping_order_id' => $order->id, 'product_id' => $single->id, 'qty' => 1]);

    $service = new SalesVolumeService(7, 2026, SalesVolumeService::BASIS_SHIPPING);

    $products = $service->getProductVolumes();
    $articles = $service->getArticleVolumes();

    // Produktliste: Set bleibt eine eigene Zeile
    expect($products[$set->id]['value'])->toBe(2)
        ->and($products[$single->id]['value'])->toBe(1);

    // Einzelartikel: 2 Sets a 6 Flaschen + 1 Einzelflasche, Set-Zeile entfaellt
    expect($articles[$single->id]['value'])->toBe(13)
        ->and($articles)->not->toHaveKey($set->id);
});

it('weist den Anteil geschaetzter Versanddaten aus', function () {
    $seed = salesVolumeSeed();
    $product = salesVolumeProduct('Aloe Gel', '8020100', 16.9);

    foreach ([ShoppingOrder::SHIPPED_AT_SOURCE_DHL, ShoppingOrder::SHIPPED_AT_SOURCE_ESTIMATED] as $source) {
        $order = salesVolumeOrder($seed, [
            'shipped' => 2,
            'shipped_at' => '2026-07-08 09:00:00',
            'shipped_at_source' => $source,
        ]);
        ShoppingOrderItem::create(['shopping_order_id' => $order->id, 'product_id' => $product->id, 'qty' => 1]);
    }

    $stats = (new SalesVolumeService(7, 2026, SalesVolumeService::BASIS_SHIPPING))->getQualityStats();

    expect($stats['orders'])->toBe(2)
        ->and($stats['estimated'])->toBe(1)
        ->and($stats['estimated_percent'])->toBe(50.0);
});