using Microsoft.Extensions.Logging;
using System.Reflection;

namespace Inspectron.Epson.PrintServer.PrintServices;

public class EpsonPrintService: IPrintService
{
    private readonly ILogger _logger;
    private readonly IPrinterFactory _printerFactory;
    private readonly IPrinterConfigurationSource _printerConfigurationSource;

    public EpsonPrintService(ILogger logger, IPrinterFactory printerFactory, IPrinterConfigurationSource printerConfigurationSource)
    {
        _logger = logger;
        _printerFactory = printerFactory;
        _printerConfigurationSource = printerConfigurationSource;
    }

    public async Task<bool> PrintAsync(string printerIp, PrintJob job)
    {
        try
        {
            var configuration = _printerConfigurationSource.GetConfiguration(printerIp);
            await using var epsonPrinter = new EpsonPrinter(_logger);
            string address;
            int port = 9100;
            var printerAddress = configuration.Address;
            if (printerAddress.Contains(":"))
            {
                var parts = printerAddress.Split(':');
                address = parts[0];
                port = int.Parse(parts[1]);
            }
            else
            {
                address = printerAddress;
            }

            await epsonPrinter.ConnectAsync(address, port);

            var printerId = await epsonPrinter.GetPrinterIdAsync();

            var status = await epsonPrinter.GetPrinterStatusAsync();
            if (!status.IsOnline)
            {
                throw new InvalidOperationException("Printer is offline or out of paper.");
            }

            var printerAdapter = _printerFactory.CreatePrinterFromId(printerId.Value, epsonPrinter);

            await printerAdapter.InitAsync();

            if (configuration.LogoFilename != null)
            {
                await printerAdapter.PrintImageAsync(configuration.LogoFilename);
            }

            await printerAdapter.SetFontSizeAsync(configuration.FontSize);

            await printerAdapter.PrintTextAsync(job.Document);
            await Task.Delay(200);
            status = await epsonPrinter.GetPrinterStatusAsync();
            if (!status.IsOnline)
            {
                throw new InvalidOperationException("Printer is offline or out of paper.");
            }

            await printerAdapter.Cut();
        }
        catch (Exception e)
        {
            _logger.LogWarning( e, "Failed to print job for printer {PrinterUid}", printerIp);
            return false;
        }
        return true;
    }

}