public async void SearchWeather()
{
try
{
HttpClient client = new HttpClient();
client.BaseAddress = new Uri(GetUrl());
var response =
await client.GetAsync(client.BaseAddress);
response.EnsureSuccessStatusCode();
var jsonResult = response.Content.ReadAsStringAsync().Result;
var weather = WeatherModel.FromJson(jsonResult);
SetValues(weather);
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// Queries the API for the city set in CityName and CountryTag properties.
/// </summary>
private void LoadCity()
{
ErrorText = string.Empty;
string apiKey = ConfigurationManager.AppSettings["API key"];
if (apiKey == null)
{
// Prompt for key
APIKeyDialog akd = new APIKeyDialog(string.Empty);
akd.ShowDialog();
// Check if set after prompt
apiKey = ConfigurationManager.AppSettings["API key"];
if (apiKey == null || apiKey.Length == 0)
{
ErrorText = "No API key set in App.config!";
}
else
{
LoadCity();
}
}
else
{
var client = new RestClient("http://api.openweathermap.org/data/2.5/");
var request = new RestRequest($"weather?q={CityName},{CountryTag}&appid={apiKey}", RestSharp.DataFormat.Json);
var response = client.Get(request);
// City has been found (HTTP 200)
if (response.StatusCode == HttpStatusCode.OK)
{
JObject responseJson = JObject.Parse(response.Content);
//Console.WriteLine(JObject.Parse(response.Content));
// Parsing can throw exception, because not all cities have complete json attribute sets
try
{
Model = WeatherModel.FromJson(JObject.Parse(response.Content));
Model.AdjustUnits();
// Save city into config
AddConfigurationEntry("CityName", CityName);
AddConfigurationEntry("CountryTag", CountryTag);
// Start refresher thread
if (!refreshTask.Status.Equals(TaskStatus.Running))
{
refreshTask.Start();
}
}
catch (Exception)
{
ErrorText = "Incomplete API response for this city!";
MessageBox.Show($"The API response of the city {CityName}, {CountryTag} is incomplete and can't be parsed properly.", "Incomplete city response",
MessageBoxButton.OK, MessageBoxImage.Warning);
}
}
// City not found
else if (response.StatusCode == HttpStatusCode.NotFound)
{
ErrorText = "City and/or country could not be found!";
Model = null;
}
// Invalid API key
else if (response.StatusCode == HttpStatusCode.Unauthorized)
{
ErrorText = "Invalid API key!";
MessageBox.Show("The API key in the App.config is invalid! Please change it in the next prompt.", "Invalid API key", MessageBoxButton.OK, MessageBoxImage.Warning);
APIKeyDialog akd = new APIKeyDialog(apiKey);
akd.ShowDialog();
}
}
}
