using DevExpress.Xpo;
using DigitalData.Core.Abstraction.Application.Repository;
using EnvelopeGenerator.Domain.Entities;
using EnvelopeGenerator.ServiceHost.Exceptions;

namespace EnvelopeGenerator.ServiceHost.Jobs.FinalizeDocument;

public class ReportCreator(IRepository<EnvelopeReport> reportRepo)
{
    public async Task<byte[]> CreateReportAsync(Envelope envelope, CancellationToken cancel = default)
    {
        var reports = await reportRepo.Where(r => r.EnvelopeId == envelope.Id).ToListAsync(cancel);

        if (reports.Count == 0)
            throw new CreateReportException("Could not prepare report data! No report data found!");

        var items = reports
            .Select(r => new ReportItem(r, envelope))
            .OrderByDescending(r => r.ItemDate)
            .ToList();

        var source = new ReportSource { Items = items };
        var report = new rptEnvelopeHistory { DataSource = source, DataMember = "Items" };
        report.CreateDocument();
        using var stream = new MemoryStream();
        report.ExportToPdf(stream);
        return stream.ToArray();
    }
}