<?php

use App\Http\Requests\Abo\AboOneTimeItemRequest;
use App\Models\UserAboOneTimeItem;
use App\Services\AboOneTimeService;
use App\Services\AboOrderCart;
use Illuminate\Foundation\Testing\RefreshDatabase;

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

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

    it('fügt ein erlaubtes Produkt (show_on 2) mit Preis-Snapshot hinzu', function () {
        $abo = makeMeAbo();
        $product = makeProduct(['2']);

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

        expect($message)->toBeNull();
        $item = UserAboOneTimeItem::where('user_abo_id', $abo->id)->first();
        expect($item)->not->toBeNull()
            ->and($item->qty)->toBe(1)
            ->and((float) $item->price)->toBeGreaterThan(0.0)
            ->and((float) $item->tax_rate)->toBe(19.0)
            ->and((float) $item->price_net)->toBeGreaterThan(0.0);
    });

    it('erhöht die Menge, wenn dasselbe Produkt erneut hinzugefügt wird', function () {
        $abo = makeMeAbo();
        $product = makeProduct(['2']);

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

        $item = UserAboOneTimeItem::where('user_abo_id', $abo->id)->first();
        expect(UserAboOneTimeItem::where('user_abo_id', $abo->id)->count())->toBe(1)
            ->and($item->qty)->toBe(2);
    });

    it('lehnt Produkte aus dem Abo-Sortiment (show_on 12) ab', function () {
        $abo = makeMeAbo();
        $product = makeProduct(['12']);

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

        expect($message)->toBe(__('abo.onetime_product_not_allowed'))
            ->and(UserAboOneTimeItem::where('user_abo_id', $abo->id)->count())->toBe(0);
    });

    it('aktualisiert die Menge eines Einmal-Artikels (geclamped)', 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' => $item->id, 'qty' => 5]);
        expect($item->fresh()->qty)->toBe(5);

        $this->service->handleAction($abo, ['action' => 'update', 'one_time_item_id' => $item->id, 'qty' => 999]);
        expect($item->fresh()->qty)->toBe(100);
    });

    it('entfernt einen Einmal-Artikel', 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();

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

        expect($message)->toBeNull()
            ->and(UserAboOneTimeItem::where('user_abo_id', $abo->id)->count())->toBe(0);
    });

    it('bestätigt den aktuellen Stand der Einmal-Artikel', function () {
        $abo = makeMeAbo();
        $product = makeProduct(['2']);
        $this->service->handleAction($abo, ['action' => 'add', 'product_id' => $product->id]);

        $message = $this->service->handleAction($abo, ['action' => 'confirm']);
        $item = UserAboOneTimeItem::where('user_abo_id', $abo->id)->first();

        expect($message)->toBeNull()
            ->and($item->confirmed_qty)->toBe(1)
            ->and($item->confirmed_at)->not->toBeNull()
            ->and($item->status)->toBe(1)
            ->and(AboOneTimeService::hasUnconfirmedChanges($abo))->toBeFalse()
            ->and(AboOneTimeService::hasConfirmedItems($abo))->toBeTrue();
    });

    it('verwirft unbestätigte Änderungen und stellt den bestätigten Stand wieder her', function () {
        $abo = makeMeAbo();
        $product = makeProduct(['2']);
        $this->service->handleAction($abo, ['action' => 'add', 'product_id' => $product->id]);
        $this->service->handleAction($abo, ['action' => 'confirm']);

        $item = UserAboOneTimeItem::where('user_abo_id', $abo->id)->first();
        $this->service->handleAction($abo, ['action' => 'update', 'one_time_item_id' => $item->id, 'qty' => 4]);

        expect(AboOneTimeService::hasUnconfirmedChanges($abo))->toBeTrue();

        $message = $this->service->handleAction($abo, ['action' => 'discard']);

        expect($message)->toBeNull()
            ->and($item->fresh()->qty)->toBe(1)
            ->and($item->fresh()->status)->toBe(1)
            ->and(AboOneTimeService::hasUnconfirmedChanges($abo))->toBeFalse();
    });

    it('verhindert das Bearbeiten fremder Einmal-Artikel', function () {
        $abo = makeMeAbo();
        $foreignAbo = makeMeAbo();
        $product = makeProduct(['2']);
        $this->service->handleAction($foreignAbo, ['action' => 'add', 'product_id' => $product->id]);
        $foreignItem = UserAboOneTimeItem::where('user_abo_id', $foreignAbo->id)->first();

        $message = $this->service->handleAction($abo, ['action' => 'remove', 'one_time_item_id' => $foreignItem->id]);

        expect($message)->toBe(__('abo.abo_item_not_found'))
            ->and(UserAboOneTimeItem::find($foreignItem->id))->not->toBeNull();
    });

    it('liefert eine Fehlermeldung bei ungültiger Aktion', function () {
        $abo = makeMeAbo();

        expect($this->service->handleAction($abo, ['action' => 'foo']))->toBe(__('abo.onetime_action_invalid'));
    });

    it('trennt bestätigte und offene Einmal-Artikel inkl. offener Zwischensumme', function () {
        $abo = makeMeAbo();
        $confirmed = makeProduct(['2'], 119, 19);
        $pending = makeProduct(['2'], 50, 19);

        UserAboOneTimeItem::create([
            'user_abo_id' => $abo->id, 'product_id' => $confirmed->id,
            'qty' => 1, 'confirmed_qty' => 1, 'confirmed_at' => now(),
            'price' => 119.0, 'tax_rate' => 19.0, 'status' => 1,
        ]);
        UserAboOneTimeItem::create([
            'user_abo_id' => $abo->id, 'product_id' => $pending->id,
            'qty' => 2, 'price' => 50.0, 'tax_rate' => 19.0, 'status' => 0,
        ]);

        expect(AboOneTimeService::confirmedItems($abo)->count())->toBe(1)
            ->and(AboOneTimeService::pendingItems($abo)->count())->toBe(1)
            ->and(AboOneTimeService::pendingGross($abo))->toBe(100.0);
    });

    it('behandelt einen geänderten bestätigten Artikel als offen', function () {
        $abo = makeMeAbo();
        $product = makeProduct(['2'], 119, 19);

        UserAboOneTimeItem::create([
            'user_abo_id' => $abo->id, 'product_id' => $product->id,
            'qty' => 3, 'confirmed_qty' => 1, 'confirmed_at' => now(),
            'price' => 119.0, 'tax_rate' => 19.0, 'status' => 0,
        ]);

        expect(AboOneTimeService::confirmedItems($abo)->count())->toBe(0)
            ->and(AboOneTimeService::pendingItems($abo)->count())->toBe(1)
            ->and(AboOneTimeService::pendingGross($abo))->toBe(357.0);
    });
});

describe('AboOrderCart::addOneTimeItemsToYard', function () {
    beforeEach(fn () => makeShopEnv());

    it('lädt nur verbindlich bestätigte Einmal-Artikel in den Warenkorb', function () {
        $abo = makeMeAbo();
        $confirmed = makeProduct(['2'], 119, 19);
        $pending = makeProduct(['2'], 50, 19);

        UserAboOneTimeItem::create([
            'user_abo_id' => $abo->id, 'product_id' => $confirmed->id,
            'qty' => 1, 'confirmed_qty' => 1, 'confirmed_at' => now(),
            'price' => 119.0, 'tax_rate' => 19.0, 'status' => 1,
        ]);
        UserAboOneTimeItem::create([
            'user_abo_id' => $abo->id, 'product_id' => $pending->id,
            'qty' => 1, 'price' => 50.0, 'tax_rate' => 19.0, 'status' => 0,
        ]);

        $yard = Yard::instance(AboOrderCart::INSTANCE);
        $yard->destroy();

        AboOrderCart::addOneTimeItemsToYard($abo->fresh());

        expect($yard->content()->count())->toBe(1)
            ->and((int) $yard->content()->first()->id)->toBe($confirmed->id);

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

describe('AboOrderCart::buildOneTimeSnapshot', function () {
    beforeEach(fn () => makeShopEnv());

    it('berechnet einen konsistenten Brutto/Netto/Steuer-Snapshot', function () {
        $abo = makeMeAbo();
        $product = makeProduct(['2'], 119, 19);

        $snapshot = AboOrderCart::buildOneTimeSnapshot($product, $abo);

        expect($snapshot['price'])->toBe(119.0)
            ->and($snapshot['tax_rate'])->toBe(19.0)
            ->and(round($snapshot['price_net'], 2))->toBe(100.0)
            ->and(round($snapshot['tax'], 2))->toBe(19.0)
            ->and($snapshot['points'])->toBe(7);
    });
});

describe('AboOrderCart::getSplitSummary', function () {
    it('trennt Abo- und Einmal-Artikel-Summen anhand der abo_addon-Option', function () {
        $yard = Yard::instance(AboOrderCart::INSTANCE);
        $yard->destroy();

        $aboRow = $yard->add(1, 'Abo-Produkt', 1, 119.0, false, false, ['weight' => 100]);
        Yard::setTax($aboRow->rowId, 19.0);

        $oneTimeRow = $yard->add(2, 'Einmal-Produkt', 2, 59.5, false, false, ['weight' => 100, 'abo_addon' => true]);
        Yard::setTax($oneTimeRow->rowId, 19.0);

        $summary = AboOrderCart::getSplitSummary();

        expect($summary['abo']['gross'])->toBe(119.0)
            ->and(round($summary['abo']['net'], 2))->toBe(100.0)
            ->and($summary['one_time']['gross'])->toBe(119.0)
            ->and($summary['has_one_time'])->toBeTrue();

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

describe('AboOneTimeItemRequest', function () {
    it('definiert die erwarteten Validierungsregeln', function () {
        $rules = (new AboOneTimeItemRequest)->rules();

        expect($rules)->toHaveKeys(['action', 'product_id', 'one_time_item_id', 'qty'])
            ->and($rules['action'])->toContain('required');
    });
});