<?php

namespace App\Http\Controllers\Pos;

use App\Http\Controllers\Controller;
use App\Http\Controllers\Pos\Concerns\ScopesToAccount;
use App\Models\PosSale;
use App\Services\CrossApp\CrossAppLinkService;
use App\Services\Pos\PosSaleService;
use App\Services\Pos\ReceiptEmailService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;
use RuntimeException;

class SaleController extends Controller
{
    use ScopesToAccount;

    public function __construct(
        private PosSaleService $sales,
        private CrossAppLinkService $links,
        private ReceiptEmailService $receiptEmail,
    ) {}

    public function index(Request $request): View
    {
        $sales = $this->scopeToLocation($request, PosSale::owned($this->ownerRef($request)))
            ->with('lines')
            ->latest()
            ->paginate(25)
            ->withQueryString();

        return view('pos.sales.index', compact('sales'));
    }

    public function show(Request $request, PosSale $sale): View
    {
        $this->authorizeOwner($request, $sale);
        $sale->load('lines', 'location');

        $invoiceUrl = $sale->isPaid()
            ? $this->links->invoiceFromSale($sale)
            : null;

        return view('pos.sales.show', compact('sale', 'invoiceUrl'));
    }

    public function receipt(Request $request, PosSale $sale): View
    {
        $this->authorizeOwner($request, $sale);
        $sale->load('lines', 'location');

        return view('pos.receipts.print', [
            'sale' => $sale,
            'location' => $sale->location,
            'autoprint' => $request->boolean('autoprint'),
        ]);
    }

    public function cancel(Request $request, PosSale $sale): RedirectResponse
    {
        $this->authorizeOwner($request, $sale);

        try {
            $this->sales->cancelSale($sale);
        } catch (RuntimeException $e) {
            return back()->with('error', $e->getMessage());
        }

        return redirect()->route('pos.sales.show', $sale)->with('success', 'Sale cancelled.');
    }

    public function emailReceipt(Request $request, PosSale $sale): RedirectResponse
    {
        $this->authorizeOwner($request, $sale);

        if (! $sale->isPaid()) {
            return back()->with('error', 'Only paid sales can be emailed as receipts.');
        }

        $data = $request->validate([
            'email' => ['required', 'email', 'max:255'],
        ]);

        try {
            $result = $this->receiptEmail->send($sale, $data['email']);
        } catch (RuntimeException $e) {
            return back()->with('error', $e->getMessage());
        }

        return back()->with('success', $result['message']);
    }

    public function destroy(Request $request, PosSale $sale): RedirectResponse
    {
        $this->authorizeOwner($request, $sale);

        try {
            $this->sales->deleteSale($sale);
        } catch (RuntimeException $e) {
            return back()->with('error', $e->getMessage());
        }

        return redirect()->route('pos.sales.index')->with('success', 'Sale deleted.');
    }

    public function callback(Request $request, PosSale $sale): RedirectResponse|View
    {
        $reference = trim((string) $request->query('reference', $sale->payment_reference ?? ''));

        if ($reference === '') {
            return $this->paymentReturn(route('pos.sales.show', $sale), error: 'Missing payment reference.');
        }

        try {
            $sale = $this->sales->completePayCheckout($reference);
        } catch (RuntimeException $e) {
            return $this->paymentReturn(route('pos.sales.show', $sale), error: $e->getMessage());
        }

        return $this->paymentReturn(route('pos.sales.show', $sale), success: 'Payment received.');
    }

    private function paymentReturn(string $url, ?string $success = null, ?string $error = null): View
    {
        if ($success) {
            session()->flash('success', $success);
        }
        if ($error) {
            session()->flash('error', $error);
        }

        return view('pos.payment-return', [
            'redirect' => $url,
        ]);
    }
}