<?php

namespace App\Http\Controllers\Qr;

use App\Http\Controllers\Controller;
use App\Models\PaymentGatewaySetting;
use App\Models\QrSetting;
use App\Services\Billing\BillingClient;
use App\Services\Billing\PlanEntitlementService;
use App\Services\Payments\MerchantGatewayService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Validation\Rule;
use Illuminate\View\View;

class AccountController extends Controller
{
    public function __construct(
        private BillingClient $billing,
        private PlanEntitlementService $entitlements,
        private MerchantGatewayService $gateway,
    ) {}

    private function topupUrl(): string
    {
        return 'https://'.config('app.account_domain').'/wallet';
    }

    /** @return array{0: int, 1: array<string, mixed>} */
    private function billingSnapshot(?string $publicId): array
    {
        if (! $publicId) {
            return [0, []];
        }

        $balanceMinor = $this->billing->balanceMinor($publicId);
        $ledger = $this->billing->serviceLedger($publicId, config('billing.service', 'mini'));

        return [$balanceMinor, $ledger];
    }

    public function wallet(): View
    {
        $user = ladill_account();
        [$balanceMinor, $ledger] = $this->billingSnapshot($user?->public_id);

        return view('qr.account.wallet', [
            'balanceMinor' => $balanceMinor,
            'spentMinor' => (int) ($ledger['spent_minor'] ?? 0),
            'creditedMinor' => (int) ($ledger['credited_minor'] ?? 0),
            'topupUrl' => $this->topupUrl(),
        ]);
    }

    public function billing(): View
    {
        $user = ladill_account();
        [$balanceMinor, $ledger] = $this->billingSnapshot($user?->public_id);

        return view('qr.account.billing', [
            'balanceMinor' => $balanceMinor,
            'spentMinor' => (int) ($ledger['spent_minor'] ?? 0),
            'creditedMinor' => (int) ($ledger['credited_minor'] ?? 0),
            'topupUrl' => $this->topupUrl(),
        ]);
    }

    public function settings(): View
    {
        $account = ladill_account();
        $settings = $account->getOrCreateQrSetting();

        return view('give.settings', [
            'account' => $account,
            'settings' => $settings,
            'gateway' => $this->gateway->settingFor($account),
            'canUsePaymentGateway' => $this->entitlements->canUseCustomPaymentGateway($account),
        ]);
    }

    public function updateSettings(Request $request): RedirectResponse
    {
        $account = ladill_account();

        $data = $request->validate([
            'notify_email' => ['nullable', 'email', 'max:255'],
            'product_updates' => ['nullable', 'boolean'],
            'notify_registrations' => ['nullable', 'boolean'],
            'notify_payouts' => ['nullable', 'boolean'],
            'gateway_provider' => ['nullable', Rule::in(['', PaymentGatewaySetting::PROVIDER_PAYSTACK])],
            'gateway_public_key' => ['nullable', 'string', 'max:2000'],
            'gateway_secret_key' => ['nullable', 'string', 'max:2000'],
            'gateway_is_active' => ['nullable', 'boolean'],
        ]);

        QrSetting::updateOrCreate(
            ['user_id' => $account->id],
            [
                'notify_email' => $data['notify_email'] ?? null,
                'product_updates' => $request->boolean('product_updates'),
                'notify_registrations' => $request->boolean('notify_registrations'),
                'notify_payouts' => $request->boolean('notify_payouts'),
            ],
        );

        if ($this->entitlements->canUseCustomPaymentGateway($account)) {
            $provider = trim((string) ($data['gateway_provider'] ?? ''));
            $setting = PaymentGatewaySetting::query()->where('owner_ref', $account->public_id)->first();
            if ($provider !== '' || $setting) {
                $setting ??= new PaymentGatewaySetting(['owner_ref' => $account->public_id]);
                if ($provider !== '') {
                    $setting->provider = $provider;
                }
                if (filled($data['gateway_public_key'] ?? null)) {
                    $setting->public_key = $data['gateway_public_key'];
                }
                if (filled($data['gateway_secret_key'] ?? null)) {
                    $setting->secret_key = $data['gateway_secret_key'];
                }
                $setting->is_active = $provider !== '' && $request->boolean('gateway_is_active');
                $setting->save();
            }
        }

        return redirect()->route('account.settings')->with('success', 'Settings saved.');
    }
}