using System.Text.Json;
using Somnia.GuestLog.Enums.Models;
using Somnia.GuestLog.Models.DTOs;

namespace Somnia.GuestLog.Services.StayExport;

public class StayExportProviderJson : IStayExportFormatProvider
{
    private const string fileExtension = "json";

    public StayExportFormat GetFormat() => StayExportFormat.GuestLogJson;
    public string GetFilename(DateTime exportTime)
        => $"{Enum.GetName(GetFormat())}_{exportTime.ToFileTimeUtc()}.{fileExtension}";


    public async Task<StayExportFileResult> ExportDataAsync(IEnumerable<StayEntryDTO> stayList, Stream dataStream)
    {
        if (!stayList.Any())
        {
            return StayExportFileResult.NoData;
        }

        // Convert to JSON.
        await JsonSerializer.SerializeAsync(dataStream, stayList);
        return StayExportFileResult.OK;
    }
}