private ChartBuilder GetChartData(CoinGeckoCurrency coin, CoingGeckoSparkline sparkline)
{
var prices = sparkline.SparklineIn7D.Price;
if (!sparkline.SparklineIn7D.Price.Any())
{
return(null);
}
var data = FillData(prices);
var dataset = new Dataset
{
BorderColor = sparkline.PriceChangePercentage7d > 0 ? "green" : "red",
Fill = false,
Label = coin.Name,
Data = data.Data
};
var options = new Models.Options
{
Scales = new Scales
{
YAxes = new List <YAx>
{
new YAx
{
Ticks = new Ticks
{
SuggestedMax = data.Max,
SuggestedMin = data.Min
}
}
}
}
};
var chart = new Chart
{
Type = "sparkline",
Data = new Data
{
Datasets = new List <Dataset>
{
dataset
}
},
Options = options
};
return(new ChartBuilder
{
Chart = chart
});
}
public async Task <string> GetQuickchartURI(CoinGeckoCurrency coin, CoingGeckoSparkline sparkline)
{
var chartData = GetChartData(coin, sparkline);
if (chartData == null)
{
return(null);
}
var quickchartresult = new QuickchartUrl();
using (var client = new HttpClient())
using (var requets = new HttpRequestMessage(HttpMethod.Post, $"{_quickchartOptions.Uri}chart/create"))
{
var json = JsonSerializer.Serialize(chartData);
using (var stringContent = new StringContent(json, Encoding.UTF8, "application/json"))
{
requets.Content = stringContent;
using (var response = await client.SendAsync(requets, HttpCompletionOption.ResponseHeadersRead))
{
if (response.IsSuccessStatusCode)
{
quickchartresult = await _httpResponseService.DeserializeJsonFromStream <QuickchartUrl>(response);
}
else
{
var content = await _httpResponseService.StreamToStringAsync(await response.Content.ReadAsStreamAsync());
throw new ApiException(message: content)
{
StatusCode = (int)response.StatusCode,
Content = content
};
}
}
}
}
return(quickchartresult.Success ? quickchartresult.Url : null);
}
