public async Task <WeatherInfo> GetWeatherInfoAsync(GeoCoords coords)
{
string url = CreateWeatherQuery(coords);
JObject data = null;
using (var client = new HttpClient())
{
var response = await client.GetAsync(url);
var content = await response.Content.ReadAsStringAsync();
data = JObject.Parse(content);
}
JObject main = (JObject)data.GetValue("main");
double?clouds = ((JObject)data.GetValue("clouds")).GetValue("all").Value <double?>();
double?humidity = main.GetValue("humidity").Value <double?>();
double?pressure = main.GetValue("pressure").Value <double?>();
double?temperature = main.GetValue("temp").Value <double?>();
return(new WeatherInfo
{
Coordinates = coords,
Clouds = clouds,
Humidity = humidity,
Perssure = pressure,
Temperature = temperature,
});
}
public double CalculateZenith(GeoCoords geoCoords, DateTime dateTime, double timeZone)
{
SPACalculator.SPAData spa = new SPACalculator.SPAData
{
Year = dateTime.Year,
Month = dateTime.Month,
Day = dateTime.Day,
Hour = dateTime.Hour,
Minute = dateTime.Minute,
Second = dateTime.Second,
Timezone = timeZone,
Latitude = geoCoords.Latitude,
Longitude = geoCoords.Longitude,
Function = SPACalculator.CalculationMode.SPA_ZA
};
if (SPACalculator.SPACalculate(ref spa) == 0)
{
return(spa.Zenith);
}
else
{
throw new ArithmeticException();
}
}
public double CalculateElevation(GeoCoords geoCoords, DateTime dateTime, double timeZone)
{
double azimuth = CalculateAizmuth(geoCoords, dateTime, timeZone);
double zenithCosine = Math.Cos(CalculateZenith(geoCoords, dateTime, timeZone) * Math.PI / 180.0);
double elevation = Math.Asin(zenithCosine) / Math.PI * 180.0;
return(azimuth > 180.0 ? 180.0f - elevation : elevation);
}
public async Task <SystemInfo> GetSystemInfoAsync(
double systemCapacity,
PanelModuleType moduleType,
PanelArrayType arrayType,
double systemLosses,
double?tilt,
double azmuth,
GeoCoords coords)
{
try
{
return(await GetSystemInfoAsync("intl", systemCapacity, moduleType, arrayType, systemLosses, tilt, azmuth, coords));
}
catch (Exception e)
{
return(await GetSystemInfoAsync("tmy3", systemCapacity, moduleType, arrayType, systemLosses, tilt, azmuth, coords));
}
}
public async Task <SystemInfo> GetSystemInfoCachedAsync(
long cacheID,
double systemCapacity,
PanelModuleType moduleType,
PanelArrayType arrayType,
double systemLosses,
double?tilt,
double azmuth,
GeoCoords coords)
{
if (sysInfoCache.TryGetValue(cacheID, out SystemInfo cached))
{
return(cached);
}
else
{
SystemInfo systemInfo = await GetSystemInfoAsync(systemCapacity, moduleType, arrayType, systemLosses, tilt, azmuth, coords);
sysInfoCache.TryAdd(cacheID, systemInfo);
return(systemInfo);
}
}
private string CreateWeatherQuery(GeoCoords coords)
{
return(CreateAuthenticatedQuery($"http://api.openweathermap.org/data/2.5/weather?lat={coords.Latitude}&lon={coords.Longitude}"));
}
private async Task <SystemInfo> GetSystemInfoAsync(
string dataset,
double systemCapacity,
PanelModuleType moduleType,
PanelArrayType arrayType,
double systemLosses,
double?tilt,
double azmuth,
GeoCoords coords)
{
using (var client = new HttpClient())
{
string query = CreateQueryParams(new Params
{
{ "api_key", apiKey },
{ "timeframe", "hourly" },
{ "dataset", dataset },
{ "system_capacity", systemCapacity.ToString() },
{ "module_type", ((int)moduleType).ToString() },
{ "losses", systemLosses.ToString() },
{ "array_type", ((int)arrayType).ToString() },
{ "tilt", tilt.ToString() },
{ "azimuth", azmuth.ToString() },
{ "lat", coords.Latitude.ToString() },
{ "lon", coords.Longitude.ToString() },
{ "radius", "0" }
});
string requestUrl = $"{BaseUrl}?{query}";
string json = null;
try
{
json = await client.GetStringAsync(requestUrl);
}
catch (Exception e)
{
throw e;
}
JObject data = JObject.Parse(json);
JArray errors = data["errors"] as JArray;
if (errors != null && errors.Count != 0)
{
throw new AggregateException(errors.Select(error => new Exception(error.ToString())));
}
else
{
JObject output = (JObject)data["outputs"];
List <double> dcArrayOutputMonthly = ((JArray)output["dc_monthly"]).Values <double>().ToList();
double dcArrayOutputAnnually = dcArrayOutputMonthly.Sum();
return(new SystemInfo
{
HourlyDCArrayOutput = ((JArray)output["dc"]).Values <double>().Select(x => x / 1000).ToList(),
MonthlyDCArrayOutput = dcArrayOutputMonthly.ToList(),
AnnualDCArrayOutput = dcArrayOutputAnnually
});
}
}
}
