using System.Text.Json;
using Amazon.Lambda.Core;
using AWS.Lambda.Powertools.Logging;
using GetStock.Adapters.Model;

namespace GetStock.Adapters
{
    public class CurrencyConverterHttpClient : ICurrencyConverter, IDisposable
    {
        private readonly IHttpClient _httpHandler;

        public CurrencyConverterHttpClient(IHttpClient httpHandler)
        {
            _httpHandler = httpHandler;
        }

        public void Dispose()
        {
            _httpHandler.Dispose();
        }

        public async Task<IDictionary<string, double>> GetCurrencies(string baseCurrency, IEnumerable<string> currencies)
        {
            var currencyList = string.Join(",", currencies);

            var requestUrl = $"?symbols={currencyList}&base={baseCurrency}";
            var responseJson = await _httpHandler.GetAsync(requestUrl);
            //TODO: chgeck for empty result
            Logger.LogInformation("response: " + responseJson);

            var result = JsonSerializer.Deserialize<CurrencyRates>(responseJson);
            if (result is not { Success: true })
            {
                return new Dictionary<string, double>();
            }

            return result.Rates;
        }
    }
}