<?php

namespace App\Http\Controllers\Api\V1\Store;

use App\Http\Controllers\Api\V1\ApiController;
use App\Models\QrCode;
use App\Models\QrPurchaseOrder;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class StoreQrPurchaseController extends ApiController
{
    public function pending(Request $request): JsonResponse
    {
        $orders = QrPurchaseOrder::with(['resident'])
            ->where('store_id', $request->user()->id)
            ->where('status', 'pending_payment')
            ->orderBy('created_at')
            ->get();

        return $this->ok($orders);
    }

    public function complete(Request $request, string $uuid): JsonResponse
    {
        $request->validate([
            'scanned_qr_data' => 'required|string',
        ]);

        $order = QrPurchaseOrder::where('uuid', $uuid)
            ->where('store_id', $request->user()->id)
            ->where('status', 'pending_payment')
            ->firstOrFail();

        // Find the scanned QR code
        $qrCode = QrCode::where('serial', $request->scanned_qr_data)->first();

        if (!$qrCode) {
            return $this->fail('Invalid QR Code. Not found in the system.', null, 404);
        }

        if (! $qrCode->status->equals(\App\States\QrCode\Allocated::class) && ! $qrCode->status->equals(\App\States\QrCode\Unassigned::class)) {
            return $this->fail('This QR Code cannot be assigned (already used or active).', null, 422);
        }

        DB::transaction(function () use ($order, $qrCode) {
            $order->update([
                'status' => 'completed',
                'completed_at' => now(),
                'qr_code_id' => $qrCode->id,
            ]);

            $qrCode->status->transitionTo(\App\States\QrCode\Active::class);
            $qrCode->update([
                'assigned_to_user_id' => $order->resident_id,
                'activated_at' => now(),
            ]);
        });

        return $this->ok($order->fresh(), 'QR Purchase completed and assigned successfully.');
    }
}