using System;
using System.Collections.Generic;
using System.Linq;
using Nancy;
using Sony.Filtr.AdminAPI.Modules.TrackPlaylistAdds.ViewModels;
using Sony.Filtr.AdminAPI.ViewModels.Graph;
using Sony.Filtr.Contracts.Abstractions;
using Sony.Filtr.Playlists.Spotify;
using Sony.Filtr.Utility;

namespace Sony.Filtr.AdminAPI.Modules.TrackPlaylistAdds
{
    public partial class TrackPlaylistAddsGraphModule : BaseModule
    { 
        public TrackPlaylistAddsGraphModule(IApplicationInstanceManager applicationInstanceManager, SpotifyPlaylistHistoricTrackListManager spotifyPlaylistHistoricTrackListManager) : base(applicationInstanceManager)
        {
            Get["TrackPlaylistAddsGraph", "/TrackPlaylistAdds/Graph", true] = async (parameters, cx) =>
            {
                string isrc = (string)Request.Query.isrc;
                if (string.IsNullOrWhiteSpace(isrc))
                    return HttpStatusCode.BadRequest;

                DateTime startDate = Maybe.ToDateTimeOrFallback((string)Request.Query.startDate, DateTime.Today.AddDays(-30));
                DateTime endDate = Maybe.ToDateTimeOrFallback((string)Request.Query.endDate, DateTime.Today);

                var result = await spotifyPlaylistHistoricTrackListManager.GetTrackPlaylistsOverTimeAsync(isrc, startDate, endDate);

                var viewModel = new GraphViewModel<TrackPlaylistAddsSeriesViewModel>
                {
                    Series = new List<TrackPlaylistAddsSeriesViewModel>()
                    {
                        new TrackPlaylistAddsSeriesViewModel()
                        {
                            Entries = result.Select(e => new TrackPlaylistAddsGraphEntry()
                            {
                                Date = e.Date,
                                PlaylistCount = e.PlaylistCount,
                                PlaylistSubscribers = e.PlaylistFollowers,
                            }).OrderBy(e => e.Date).ToList()
                        }
                    }
                };
                return Response.AsJson(viewModel);
            };
        }


    }
}