public CityDto GetCity(string name)
{
string weatherApiUrl = HttpUtility.HtmlDecode(ConfigurationManager.AppSettings["WeatherApiUrl"]);
int cityDataTimeout = Convert.ToInt32(ConfigurationManager.AppSettings["CityDataTimeoutHrs"]);
CityDto city = _cityRepository.SelectCityByName(name);
if (city == null || (city != null && city.LastUpdatedDateTimeUtc.AddHours(cityDataTimeout) <= DateTime.UtcNow))
{
string getWeatherDataUri = string.Format(weatherApiUrl, name);
GetWeatherDataResponse apiResponse = _apiService.GetRequest <GetWeatherDataResponse>(getWeatherDataUri);
if (city == null)
{
city = new CityDto();
}
city.Name = name;
city.Latitude = apiResponse.Coord.Lat;
city.Longitude = apiResponse.Coord.Lon;
city.Temperature = apiResponse.Main.Temp;
city.LastUpdatedDateTimeUtc = DateTime.UtcNow;
city = _cityRepository.InsertOrUpdateCity(city);
}
return(city);
}
public void GetCity_ShouldReturnCityFromApiIfCityFromRepoIsExpired()
{
CityDto city = new CityDto();
city.Name = "London";
city.Temperature = 20;
city.LastUpdatedDateTimeUtc = DateTime.UtcNow.AddHours(-2);
GetWeatherDataResponse getWeatherDataResponse = new GetWeatherDataResponse();
getWeatherDataResponse.Id = 54321;
getWeatherDataResponse.City = "London";
getWeatherDataResponse.Coord = new GetWeatherDataResponseCoord {
Lat = 50, Lon = -50
};
getWeatherDataResponse.Main = new GetWeatherDataResponseMain {
Temp = 26
};
_cityRepository
.Setup(x => x.SelectCityByName("London"))
.Returns(city);
_apiService
.Setup(x => x.GetRequest <GetWeatherDataResponse>("http://api.weather.com/weather?city=London"))
.Returns(getWeatherDataResponse);
_cityRepository
.Setup(x => x.InsertOrUpdateCity(It.Is <CityDto>(y => y.Name == "London")))
.Returns(new CityDto
{
Id = 1,
Name = getWeatherDataResponse.City,
Latitude = getWeatherDataResponse.Coord.Lat,
Longitude = getWeatherDataResponse.Coord.Lon,
Temperature = getWeatherDataResponse.Main.Temp
});
CityDto actual = _locationService.GetCity("London");
Assert.IsNotNull(actual);
Assert.AreEqual(getWeatherDataResponse.Main.Temp, actual.Temperature);
}
