async Task <string> Send(ThingSpeakModel data)
{
var result = "";
var channelId = "<Your channel id>";
using (var client = new HttpClient())
{
var url = $"https://api.thingspeak.com/channels/{channelId}/bulk_update.json";
var content = JsonConvert.SerializeObject(data);
var req = new HttpRequestMessage(HttpMethod.Post, url)
{
Content = new StringContent(content, Encoding.UTF8, "application/json")
};
var res = await client.SendAsync(req);
if (res.StatusCode == HttpStatusCode.Accepted)
{
result += await res.Content.ReadAsStringAsync();
}
else
{
throw new Exception($"Fehler beim Übertragen an ThingSpeak: {res.StatusCode}");
}
}
return(result);
}
async Task <string> UploadTrip(string fileName)
{
string result = "";
var api_key = "<Your ThingSpeak key>";
var data = new ThingSpeakModel()
{
write_api_key = api_key,
updates = new List <ThingSpeakOBD>()
};
int count = 0;
try
{
using (UserDialogs.Instance.Loading("CarAssist", maskType: MaskType.Black))
{
using (var reader = new StreamReader(File.OpenRead(fileName)))
{
string line = null;
while ((line = await reader.ReadLineAsync()) != null)
{
// Datetime,Latitude,Longitude,VIN,rpm,speed,iat,maf,celv,fuel
var values = line.Split(',');
var created_at = DateTime.Parse(values[0]).ToString("o");
data.updates.Add(new ThingSpeakOBD
{
created_at = created_at,
field1 = values[3], // VIN
field2 = values[4], // RPM
field3 = values[5], // Speed
field4 = values[6], // IntakeAirTemperature
field5 = values[7], // MAFAirFlowRate
field6 = values[8], // CalculatedEngineLoadValue
field7 = values[9] // FuelTankLevel
//lat = values[1],
//lon = values[2]
});
count++;
if (count == 960) // Free license, max. count
{
break;
}
}
}
await Send(data);
// hochgeladene Datei löschen
//File.Delete(fileName);
await DisplayAlert("CarAssist", $"{count} Datensätze hochgeladen", "Ok");
}
}
catch (Exception ex)
{
await DisplayAlert("CarAssist", $"Hochgeladene Datensätze: {count}\n" + ex.Message, "Ok");
}
return(result);
}