public async Task <APIGatewayProxyResponse> Coin(APIGatewayProxyRequest request, ILambdaContext context)
{
_logger.Log($"{nameof(Coin)} API called.");
if (request.PathParameters == null || !request.PathParameters.ContainsKey(SYMBOL_PARAM_NAME))
{
return new APIGatewayProxyResponse {
StatusCode = (int)HttpStatusCode.BadRequest, Body = $"Missing required parameter {SYMBOL_PARAM_NAME}"
}
}
;
var symbol = HttpUtility.UrlDecode(request.PathParameters[SYMBOL_PARAM_NAME]);
if (!_coinRepository.CoinExists(symbol))
{
return new APIGatewayProxyResponse {
StatusCode = (int)HttpStatusCode.NotFound, Body = $"Symbol not found: {symbol}"
}
}
;
var coinStats = await _coinRepository.GetCoinStats(symbol);
return(CreateAPIGatewayProxyResponse(coinStats));
}
public CoinRepository(ICoinGeckoClient coinGeckoClient, IMemoryCache memoryCache, ICoinLogger coinLogger)
{
coinLogger.Log($"Initializing {nameof(CoinRepository)}.");
_coinGeckoClient = coinGeckoClient;
_memoryCache = memoryCache;
_coinLogger = coinLogger;
_coins = CoinData.GetAllCoins().Where(x => x.MarketCapRank > 0).GroupBy(x => x.Symbol).Select(x => x.OrderBy(y => y.MarketCapRank).First()).ToList();
_coinBySymbolLookup = _coins.ToDictionary(x => x.Symbol, x => x);
}