using CH.CryptoStats.Abstractions;
using Microsoft.Extensions.Configuration;
using System.Net.Http.Json;
using System.Text.Json;
namespace CH.CryptoStats.CoinMarketCap;

public class CoinMarketCapService(HttpClient httpClient, IConfiguration configuration) : ICryptoStats
{
  public async Task<Abstractions.CryptoStats> GetCryptoStatsAsync(string cryptoName, string currency, CancellationToken cancellationToken)
  {
    var apiKey = configuration.GetValue<string>("CoinMarketCap:ApiKey");
    var apiUrl = configuration.GetValue<string>("CoinMarketCap:ApiUrl");
    var response = await httpClient.GetAsync($"{apiUrl}slug={cryptoName}&convert={currency}&CMC_PRO_API_KEY={apiKey}",cancellationToken);
    var jsonResponse = await response.Content.ReadFromJsonAsync<ApiResponse>(cancellationToken);
    return ParseCryptoStats(jsonResponse.Data["1"], currency, cancellationToken).Result;

  }

  private Task<Abstractions.CryptoStats> ParseCryptoStats(CoinMarketCapEntity coinMarketCapEntity, string currency, CancellationToken cancellationToken)
  {
    var cryptoStats = new Abstractions.CryptoStats
    {
      Name = coinMarketCapEntity.Name,
      Symbol = coinMarketCapEntity.Symbol,
      MaxSupply = coinMarketCapEntity.MaxSupply,
      CirculatingSupply = coinMarketCapEntity.CirculatingSupply,
      TotalSupply = coinMarketCapEntity.TotalSupply,
      Currency = currency.ToUpper(),
      UpdatedAt = DateTime.Parse(coinMarketCapEntity.LastUpdated),
      Price = coinMarketCapEntity.Quote.CAD == null ? 
      coinMarketCapEntity.Quote.USD.Price : coinMarketCapEntity.Quote.CAD.Price,
      Volume24H = coinMarketCapEntity.Quote.CAD == null ? 
      coinMarketCapEntity.Quote.USD.Volume24h : coinMarketCapEntity.Quote.CAD.Volume24h,
      VolumeChange24H = coinMarketCapEntity.Quote.CAD == null ? 
      coinMarketCapEntity.Quote.USD.VolumeChange24h : coinMarketCapEntity.Quote.CAD.VolumeChange24h,
      MarketCap = coinMarketCapEntity.Quote.CAD == null ? 
      coinMarketCapEntity.Quote.USD.MarketCap : coinMarketCapEntity.Quote.CAD.MarketCap,
      MarketCapDominance = coinMarketCapEntity.Quote.CAD == null ? 
      coinMarketCapEntity.Quote.USD.MarketCapDominance : coinMarketCapEntity.Quote.CAD.MarketCapDominance,
      FullyDilutedMarketCap = coinMarketCapEntity.Quote.CAD == null ? 
      coinMarketCapEntity.Quote.USD.FullyDilutedMarketCap : coinMarketCapEntity.Quote.CAD.FullyDilutedMarketCap
    };
    return Task.FromResult(cryptoStats);
  }
}