public async Task <MarketData> GetMarketData(string ticker)
{
MarketData marketData = new MarketData();
// Get Unique API ID For Ticker
CoinGeckoListing listing = await GetListing(ticker);
if (listing == null)
{
return(marketData);
}
// Request Coin Information
HttpClient httpClient = new HttpClient();
string request = $"{API_URL}/coins/{listing.ID}?localization=false&tickers=false&market_data=true&community_data=false&developer_data=false&sparkline=false";
JsonDocument response = JsonDocument.Parse(await httpClient.GetStringAsync(request));
JsonElement jsonMarketData = response.RootElement.GetProperty("market_data");
// Extract Market Data From Response
marketData.name = listing.Name;
marketData.price = jsonMarketData.GetProperty("current_price").GetProperty("usd").GetDouble();
marketData.marketcap = jsonMarketData.GetProperty("market_cap").GetProperty("usd").GetDouble();
marketData.dayrangehigh = jsonMarketData.GetProperty("high_24h").GetProperty("usd").GetDouble();
marketData.dayrangelow = jsonMarketData.GetProperty("low_24h").GetProperty("usd").GetDouble();
marketData.tradingvolume = jsonMarketData.GetProperty("total_volume").GetProperty("usd").GetDouble();
return(marketData);
}
private async Task <CoinGeckoListing> GetListing(string ticker)
{
// Check If Ticker Is Cached
CoinGeckoListing listing = ListingCache.Find(item => item.Ticker.Equals(ticker, StringComparison.InvariantCultureIgnoreCase));
// If Not, Update Listings & Check Again
if (listing == null)
{
await UpdateListingsCache();
}
listing = ListingCache.Find(item => item.Ticker.Equals(ticker, StringComparison.InvariantCultureIgnoreCase));
return(listing);
}