<?php

namespace App\EventPaymentModules\Modules;

use App\EventPaymentModules\AbstractEventPaymentModule;
use App\EventPaymentModules\DTO\CreateInvoiceRequest;
use App\EventPaymentModules\DTO\RegistrationSummaryRequest;
use App\EventPaymentModules\DTO\RegistrationSummaryResponse;
use App\EventPaymentModules\ProvidesGiroCode;
use App\Models\EventParticipant;
use App\Models\PaymentMethod;
use App\Providers\GiroCodeProvider;

/**
 * Überweisung auf das Veranstaltungskonto -- die Zahlung erfolgt manuell durch die teilnehmende Person.
 */
class AccountTransferPaymentModule extends AbstractEventPaymentModule implements ProvidesGiroCode
{
    public static function slug(): string
    {
        return PaymentMethod::PAYMENT_ACCOUNT_TRANSACTION;
    }

    public function defaultName(): string
    {
        return 'Überweisung auf Veranstaltungskonto';
    }

    public function getOptions(): array
    {
        return [
            ['name' => 'account_owner', 'label' => 'Kontoinhaber', 'type' => 'string', 'required' => true],
            ['name' => 'iban', 'label' => 'IBAN', 'type' => 'string', 'required' => true],
            ['name' => 'bic', 'label' => 'BIC', 'type' => 'string', 'required' => false],
        ];
    }

    public function registrationSummary(RegistrationSummaryRequest $request): RegistrationSummaryResponse
    {
        $participant = $request->participant;
        $config = $request->configuration;

        $amountLeft = clone $participant->amount;
        if ($participant->amount_paid !== null) {
            $amountLeft->subtractAmount($participant->amount_paid);
        }

        $response = new RegistrationSummaryResponse();
        $response->hasPaymentInformation = $amountLeft->getAmount() > 0;
        $response->showGiroCode = $response->hasPaymentInformation;
        $response->lines = [
            ['label' => 'Kontoinhaber', 'value' => (string)($config['account_owner'] ?? '')],
            ['label' => 'IBAN', 'value' => (string)($config['iban'] ?? '')],
            ['label' => 'Verwendungszweck', 'value' => (string)$participant->payment_purpose],
            ['label' => 'Betrag', 'value' => $amountLeft->toString()],
        ];

        return $response;
    }

    public function giroCode(EventParticipant $participant, array $configuration): ?string
    {
        $amountLeft = clone $participant->amount;
        if ($participant->amount_paid !== null) {
            $amountLeft->subtractAmount($participant->amount_paid);
        }

        if ($amountLeft->getAmount() <= 0) {
            return null;
        }

        $provider = new GiroCodeProvider(
            (string)($configuration['account_owner'] ?? ''),
            (string)($configuration['iban'] ?? ''),
            $amountLeft->getAmount(),
            (string)$participant->payment_purpose,
        );

        return (string)$provider->create();
    }

    protected function invoiceClosingStatement(CreateInvoiceRequest $request): string
    {
        // TODO: In einer Folge-Iteration ausformulieren (z.B. "Bitte überweise bis zum ... auf IBAN ...").
        return '';
    }
}