using AVSCartonShipmentVerifier.DTOs;
using AVSCartonShipmentVerifier.Services;
using Microsoft.AspNetCore.Mvc;

namespace AVSCartonShipmentVerifier.Controllers;

[Route("api/verification")]
public sealed class VerificationController(
    IShipmentVerificationService shipmentVerificationService,
    IScanHistoryStore scanHistoryStore,
    ILogger<VerificationController> logger) : Controller
{
    private readonly IShipmentVerificationService _shipmentVerificationService = shipmentVerificationService;
    private readonly IScanHistoryStore _scanHistoryStore = scanHistoryStore;
    private readonly ILogger<VerificationController> _logger = logger;

    [HttpPost("scan")]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> Scan([FromBody] QrScanRequestDto request, CancellationToken cancellationToken)
    {
        if (request is null)
        {
            return BadRequest(new { message = "Request payload is required." });
        }

        try
        {
            var verificationResult = await _shipmentVerificationService.VerifyQrAsync(request.QrValue, cancellationToken);
            return Ok(new
            {
                result = verificationResult,
                recentScans = await _scanHistoryStore.GetLastFiveAsync(cancellationToken)
            });
        }
        catch (OperationCanceledException)
        {
            return StatusCode(StatusCodes.Status499ClientClosedRequest);
        }
        catch (Exception exception)
        {
            _logger.LogError(exception, "Unexpected error while verifying QR scan.");

            return StatusCode(StatusCodes.Status500InternalServerError, new
            {
                message = "An unexpected error occurred during verification."
            });
        }
    }
}