using Drab.Logic.Dtos;
using Drab.Logic.Interfaces;
using FastReport;
using FastReport.Export.PdfSimple;
using NLog;
using System;
using System.IO;
using System.Reflection;
using System.Threading.Tasks;

namespace Drab.Logic.Services;

internal class OrderPdfGenerator : IOrderPdfGenerator
{
    private readonly ILogger _logger;

    public OrderPdfGenerator()
    {
        _logger = LogManager.GetCurrentClassLogger();
    }

    public Task<string> GenerateOrder(DokDto order)
    {
        _logger.Info($"Generate pdf document: {order.NrDok}");
        var cleanFilename = order.NrDok.Replace('/', '-');
        var orderFilename = $"Zam_{cleanFilename}_{order.Data:yyyy-MM-dd}_{order.Sklep}_{order.DokId}.pdf";
        var templatePath = Path.Combine(Constants.ReportsTemplatesPath, "Order.frx");
        var outputFile = Path.Combine(Constants.ReportsOutputPath, orderFilename);
        var version = Assembly.GetEntryAssembly().GetCustomAttribute<AssemblyInformationalVersionAttribute>().InformationalVersion;
        var generatedAt = $"{DateTime.Now:yyyy-MM-dd HH:mm:ss}";

        var data = new[] { order };
        try
        {
            var report = new Report();
            report.Load(templatePath);
            report.SetParameterValue("generatedAt", generatedAt);
            report.SetParameterValue("version", version);
            report.RegisterData(data, "Order");
            report.Prepare();
            var pdfExport = new PDFSimpleExport();
            pdfExport.Export(report, outputFile);
            return Task.FromResult(orderFilename);
        }
        catch (Exception e)
        {
            _logger.Error(e, "Error on generating order document: {OrderNo}", order.NrDok);
            return Task.FromResult(string.Empty);
        }
    }
}