using System;
using JdpVehicle;
using Serilog;
using LCU.Shared.Collections.RepoApiLib.Utilities;
using Newtonsoft.Json;
using LCU.Shared.Collections.RepoApiLib.Models.Results;

namespace LCU.Shared.Collections.RepoApiLib.WebServices.NADA
{
    public class CollateralValueService : ICollateralValueService
	{
		private readonly CollateralValueServiceConfig _config;
		private readonly IClientHelpers _clientHelpers;

		public CollateralValueService(CollateralValueServiceConfig config, ClientHelpers clientHelpers)
		{
			_config = config;
			_clientHelpers = clientHelpers;
		}


		private readonly VehicleTypes[] _nadaVehicleType =
		{
			VehicleTypes.UsedCar,
			VehicleTypes.CommercialTruck
		};

		public CollateralValuation GetCollateralValue(string vin,
			int mileage,
			int vehicleTypeKey)
		{
			var valueResponse = this.GetVehicleData(_config.Region, _config.Period, vin, vehicleTypeKey, mileage);

			if (valueResponse != null)
			{
				var autoVehicle = new CollateralValuation()
				{
					Make = valueResponse.Make,
					Model = valueResponse.Body + "  " + valueResponse.Model,
					Year = valueResponse.Modelyear,
					UcgVehicleId = valueResponse.Ucgvehicleid.ToString(),   //ucgvehicleid is the new ID and not 1:1 to legacy UID
					SeriesDescription = valueResponse.Model,
					BodyDescription = valueResponse.Body,
					Weight = String.IsNullOrWhiteSpace(valueResponse.Curbweight) ? 0 : Int32.Parse(valueResponse.Curbweight),
					Msrp = String.IsNullOrWhiteSpace(valueResponse.Basemsrp) ? 0 : Int32.Parse(valueResponse.Basemsrp),
					AveMileage = valueResponse.Averagemileage,
					MileageAdjustment = valueResponse.Mileageadjustment,
					LookupDate = DateTime.Now,
					Loan = valueResponse.Baseloan,
					LoanPlusVinAccMileage = valueResponse.Adjustedloan,
					Retail = valueResponse.Basecleanretail,
					RetailPlusVinAccMileage = valueResponse.Adjustedcleanretail,
					AvgTradeIn = valueResponse.Baseaveragetrade,
					AvgTradeInPlusVinAccMileage = valueResponse.Adjustedaveragetrade,
					RoughTradeIn = valueResponse.Baseroughtrade,
					RoughTradeInPlusVinAccMileage = valueResponse.Adjustedroughtrade,
					TradeIn = valueResponse.Basecleantrade,
					TradeInPlusVinAccMileage = valueResponse.Adjustedcleantrade,
					AuctionInfoUnavailable = true
				};

				//Try catch to prevent failure if no auction values available
				try
				{
					var auctionResponse = this.GetAuctionValues(_config.Period, valueResponse.Ucgvehicleid, _config.Region, vehicleTypeKey, vin, mileage);

					if (auctionResponse != null)
					{
						autoVehicle.AuctionInfoUnavailable = false;
						autoVehicle.AverageAdjustedAuctionValue = auctionResponse.AvgAuction;
						autoVehicle.HighAdjustedAuctionValue = auctionResponse.HighAuction;
						autoVehicle.LowAdjustedAuctionValue = auctionResponse.LowAuction;
						autoVehicle.DateRange = auctionResponse.DateRange;
					}
				}
				catch (Exception ex)
				{
					Log.Error(ex, "Failed to Retreive Auction Values in CollateralValueService");
				}

				return autoVehicle;
			}

			return null;
		}

		private VehicleData GetVehicleData(int region, int period, string vin, int vehicleTypeKey, int mileage)
		{
			var newURL = string.Format(_config.DefaultVehicleAndValuesByVinEndpoint + "?period={0}&vin={1}&region={2}&mileage={3}",
				period, vin, region, mileage);

			var request = _clientHelpers.CreateGetHttpRequestMessage(newURL, _config.ApiKey);
			var response = _clientHelpers.SendHttpRequestMessage(request);

            if (!response.IsSuccessStatusCode)
            {
                throw new Exception($"Request for vehicle data for vehicle with VIN {vin} was unsuccessful.");
            }

            var content = response.Content.ReadAsStringAsync().Result;

			var result = JsonConvert.DeserializeObject<VehicleInformation>(content);

			return result.Result[0];
		}

		private AuctionData GetAuctionValues(int period, int ucgVehicleId, int region, int vehicleTypeKey, string vin, int mileage)
		{
            var newURL = string.Format(_config.WeeklyAuctionValuesByVehicleIdEndPoint + "?period={0}&vehicletype={1}&vin={2}&ucgvehicleid={3}&region={4}&mileage={5}", 
				period, this._nadaVehicleType[vehicleTypeKey], vin, ucgVehicleId, region, mileage);

            var request = _clientHelpers.CreateGetHttpRequestMessage(newURL, _config.ApiKey);
            var response = _clientHelpers.SendHttpRequestMessage(request);

            if (!response.IsSuccessStatusCode)
            {
                throw new Exception($"Request for auction data for vehicle with VIN {vin} was unsuccessful.");
            }

            var content = response.Content.ReadAsStringAsync().Result;

            var result = JsonConvert.DeserializeObject<AuctionInformation>(content);

            return result.Result[0];
		}
    }
}