using System;
using System.Linq;
using System.Net;
using System.Threading.Tasks;
using RestSharp;
using Sony.ChartBot.Entities.ChartApi;
using Sony.ChartBot.Entities.MessengerApi;

namespace Sony.ChartBot.ChartApi
{
    public class ChartApiClient
    {
        public IRestClient RestClient
        {
            get
            {
                return new RestClient("https://partnerapi-internal.filtr.com");
            }
        }

        public async Task<ChartResponse> GetChartPositionsAsync(string artistName, string countryCode, string trackName = null)
        {
            var request = new RestRequest("chartPositions", Method.GET);

            request.AddQueryParameter("artistName", artistName);
            request.AddQueryParameter("countryCode", countryCode);

            if (!string.IsNullOrWhiteSpace(trackName))
            {
                request.AddQueryParameter("trackName", trackName);
            }

            var response = await RestClient.ExecuteTaskAsync<ChartResponse>(request);
            if (response?.StatusCode == HttpStatusCode.NotFound)
            {
                return null;
            }

            ValidateResponse(response);

            return response?.Data;
        }

        // ReSharper disable once UnusedParameter.Local
        private void ValidateResponse(IRestResponse response, params HttpStatusCode[] allowedStatusCodes)
        {
            if (response == null || response.ErrorException != null || !allowedStatusCodes.Contains(response.StatusCode))
                throw new Exception(
                    $"Failed response: {response?.Request?.Resource} {response?.Request?.Method} {response?.StatusCode} {response?.Content} {response?.ErrorMessage}",
                    response?.ErrorException);
        }

        private void ValidateResponse<T>(IRestResponse<T> response)
        {
            ValidateResponse(response, HttpStatusCode.OK);
        }

        private void ValidateResponse<T>(IRestResponse<T> response, params HttpStatusCode[] allowedStatusCodes)
        {
            ValidateResponse((IRestResponse)response, allowedStatusCodes);
        }
    }
}