btcpayserver/BTCPayServer/Controllers/RateController.cs

using BTCPayServer.Models;
using Microsoft.AspNetCore.Mvc;
using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using System.Threading.Tasks;
using BTCPayServer.Filters;
using BTCPayServer.Services.Rates;

namespace BTCPayServer.Controllers
{
    public class RateController : Controller
    {
        IRateProvider _RateProvider;
        CurrencyNameTable _CurrencyNameTable;
        public RateController(IRateProvider rateProvider, CurrencyNameTable currencyNameTable)
        {
            _RateProvider = rateProvider ?? throw new ArgumentNullException(nameof(rateProvider));
            _CurrencyNameTable = currencyNameTable ?? throw new ArgumentNullException(nameof(currencyNameTable));
        }

        [Route("rates")]
        [HttpGet]
        [BitpayAPIConstraint]
        public async Task<DataWrapper<NBitpayClient.Rate[]>> GetRates()
        {
            var allRates = (await _RateProvider.GetRatesAsync());
            return new DataWrapper<NBitpayClient.Rate[]>
                    (allRates.Select(r =>
                            new NBitpayClient.Rate()
                            {
                                Code = r.Currency,
                                Name = _CurrencyNameTable.GetCurrencyData(r.Currency)?.Name,
                                Value = r.Value
                            }).Where(n => n.Name != null).ToArray());

        }
    }
}