using Google.Rpc;
using Grpc.Core;
using GrpcShared;
using GrpcShared.DTO.Search;
using GrpcShared.DTO.Track.MultipleTrack;
using GrpcShared.DTO.Track.SaveTracks;
using GrpcShared.DTO.Track.SingleTrack;
using GrpcShared.DTO.TrackByID;
using GrpcShared.Interfaces;
using Microsoft.AspNetCore.Authorization;
using Microsoft.Net.Http.Headers;
using NemAnBlazor.Services;
using Newtonsoft.Json;
using System.Text;
using System.Text.Json;
using System.Web;
using static GrpcShared.DTO.Search.SearchDetails;

namespace SpotifyService.Services
{
    public class TrackService : ITrackService
    {
        private readonly IHttpClientFactory _httpClientFactory;
        public TrackService(IHttpClientFactory httpClientFactory)
        {
            _httpClientFactory = httpClientFactory;
        }
        public async Task<SearchResponse> ListSearchAsync(SearchRequest request)
        {

            var client = _httpClientFactory.CreateClient("HttpClient");

            string url = $"search?q={request.Query}&type={request.Type}";

            return await HttpUtils.HttpUtils<SearchResponse>.GetData(client, url, request.Token!);


        }
        public async Task<SingleTrackResponse> ListSingleTrackAsync(SingleTrackRequest request)
        {
            var client = _httpClientFactory.CreateClient("HttpClient");
            string url = $"audio-features/{request.Id}";
            
            return await HttpUtils.HttpUtils<SingleTrackResponse>.GetData(client, url, request.Token!);
        }
        public async Task<MultipleTrackResponse> ListMultipleTrackAsync(MultipleTrackRequest request)
        {
            var client = _httpClientFactory.CreateClient("HttpClient");

            var param = new Dictionary<string, List<string>>();
            param["ids"] = request.Ids!;

            var query = UriUtil(param);
            string url = $"audio-features{query}";          

            return await HttpUtils.HttpUtils<MultipleTrackResponse>.GetData(client,url,request.Token!);
        }
        public async Task SaveTracks(SaveTracksRequest request)
        {
            var client = _httpClientFactory.CreateClient("HttpClient");

            var param = new Dictionary<string, List<string>>();
            param["ids"] = request.Ids!;

            var query = UriUtil(param);
            string url = $"me/tracks/{query}";

            //the response type has nothing to do with the method, it's there so that the method can be called
            await HttpUtils.HttpUtils<MultipleTrackResponse>.PutData(client, url, request.Token!);
 
        }
        public static string UriUtil(Dictionary<string, List<string>> param)
        {
            bool startingQuestionMarkAdded = false;
            var sb = new StringBuilder();

            foreach (var id in param)
            {
                sb.Append(startingQuestionMarkAdded ? '&' : '?');
                sb.Append(id.Key);
                sb.Append('=');

                foreach (var Xid in id.Value)
                {
                    sb.Append(Xid);
                    sb.Append("%2C");
                    startingQuestionMarkAdded = true;
                }
            }
            sb.Length = sb.Length - 3;
            return sb.ToString();
        }
        public async Task<TrackResponse> GetById(TrackRequest request)
        {
            var client = _httpClientFactory.CreateClient("HttpClient");

            string url = $"tracks/{request.TrackID}";

            return await HttpUtils.HttpUtils<TrackResponse>.GetData(client, url, request.Token!);
        }
    }
}