public async Task <PredictionModel> GetPriceNowAsync(CryptoCurrencyType cryptoCurrencyType,
string fiatCurrencyCode = "USD")
{
using var httpClient = new HttpClient();
string symbol = GetSymbol(cryptoCurrencyType, fiatCurrencyCode);
string requestUrl = string.Format(BinanceAPIEndpoint, symbol);
var response = await httpClient.GetAsync(requestUrl);
var responseText = await response.Content.ReadAsStringAsync();
dynamic responseObj = JsonConvert.DeserializeObject(responseText);
double price = responseObj.price;
return(new PredictionModel
{
Author = this,
CryptoCurrencyCode = cryptoCurrencyType.ToString(),
AveragePrice = price,
ChangePercent = 0,
Date = DateTime.Now,
FiatCurrencyCode = fiatCurrencyCode,
IsFuture = false
});
}
protected override string GetScrapePattern(CryptoCurrencyType cryptoCurrencyType)
{
return(cryptoCurrencyType switch
{
CryptoCurrencyType.ETH => @$ "<tr class=" "w0" " data-key=" "0" "><td class=" "w0" " data-col-seq=" "0" ">{TommorowFormattedString}</td><td class=" "w0" " data-col-seq=" "1" "><span class=" "mobileshow" ">Price: </span><i class=" "fa fa-usd" " aria-hidden=" "true" "></i>(.*?)</td>",
CryptoCurrencyType.DOT => @$ "<tr class=" "w0" " data-key=" "0" "><td class=" "w0" " data-col-seq=" "0" ">{TommorowFormattedString}</td><td class=" "w0" " data-col-seq=" "1" "><span class=" "mobileshow" ">Price: </span><i class=" "fa fa-usd" " aria-hidden=" "true" "></i>(.*?)</td>",
CryptoCurrencyType.BTC => @$ "<tr class=" "w0" " data-key=" "0" "><td class=" "w0" " data-col-seq=" "0" ">{TommorowFormattedString}</td><td class=" "w0" " data-col-seq=" "1" "><span class=" "mobileshow" ">Price: </span><i class=" "fa fa-usd" " aria-hidden=" "true" "></i>(.*?)</td>",
_ => throw new Exception("Unknown Crypto Currency type")
});
public virtual async Task <PredictionModel> GetTommorowPredictionAsync(CryptoCurrencyType currencyType)
{
return(currencyType switch
{
CryptoCurrencyType.ETH => await GetTommorowEthPredictionAsync(),
CryptoCurrencyType.BTC => await GetTommorowBtcPredictionAsync(),
CryptoCurrencyType.DOT => await GetTommorowDotPredictionAsync(),
_ => throw new Exception("Unknown Crypto Currency type")
});
protected override string GetScrapePattern(CryptoCurrencyType cryptoCurrencyType)
{
return(cryptoCurrencyType switch
{
CryptoCurrencyType.ETH => @"<td class=""currency"">\s+1 day\s+<\/td>\s+<td class=\""(price up|price down)\"">\s+\$(.*?)<\/td>\s+<td class=\""(price up|price down)\"">\s+(.*?)\s+<\/td>",
CryptoCurrencyType.DOT => @"<td class=""currency"">\s+1 day\s+<\/td>\s+<td class=\""(price up|price down)\"">\s+\$(.*?)<\/td>\s+<td class=\""(price up|price down)\"">\s+(.*?)\s+<\/td>",
CryptoCurrencyType.BTC => @"<td class=""currency"">\s+1 day\s+<\/td>\s+<td class=\""(price up|price down)\"">\s+\$(.*?)<\/td>\s+<td class=\""(price up|price down)\"">\s+(.*?)\s+<\/td>",
_ => throw new Exception("Unknown cyptocurrency type")
});
private string GetSymbol(CryptoCurrencyType cryptoCurrencyType, string fiatCurrencyCode)
{
var postfix = fiatCurrencyCode.ToUpper() switch
{
"USD" => "USDT",
"EUR" => "EUR",
_ => fiatCurrencyCode
};
return($"{cryptoCurrencyType}{postfix}");
}
}
public static string GetCryptoCurrencyNameByType(CryptoCurrencyType cryptoCurrencyType) => typeToNameMapping[cryptoCurrencyType];
protected override string GetScrapePattern(CryptoCurrencyType cryptoCurrencyType)
{
return cryptoCurrencyType switch
{
CryptoCurrencyType.ETH => @$"<td style=\""[^>]*\"">{TommorowFormattedString}<\/td>\s+<td style=\""[^>]*\"">.*?<\/td>\s+<td style=\""[^>]*\"">.(.*?)</td>",
