using DevExpress.Xpo;
using DigitalData.Core.Abstraction.Application.Repository;
using EnvelopeGenerator.Domain.Constants;
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 => ToReportItem(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();
    }

    private static ReportItem ToReportItem(EnvelopeReport report, Envelope envelope)
    {
        return new ReportItem
        {
            CreatorFullName = envelope.User is not null
                ? $"{envelope.User.Prename} {envelope.User.Name}".Trim()
                : string.Empty,
            CreatorEmailAddress = envelope.User?.Email ?? string.Empty,
            EnvelopeTitle = report.HeadTitle ?? string.Empty,
            EnvelopeUuid = report.HeadUuid ?? string.Empty,
            EnvelopeCertificationType = envelope.CertificationType is int certType ? ((CertificationType)certType).ToString() : "null",
            ItemStatus = (EnvelopeStatus)report.PosStatus,
            ItemUserReference = report.PosWho ?? string.Empty,
            ItemDate = report.PosWhen ?? DateTime.MinValue
        };
    }
}