диплом целиком (1218792), страница 12
Текст из файла (страница 12)
{
db.Update(location);
}
else
{
location.Id = Convert.ToInt32(db.InsertWithIdentity(location));
}
}
}
public void Delete(Location location)
{
using (var db = new DataConnection(_configurationString))
{
db.Delete(location);
}
}
}
}
WeatherAnalysis.Core.Service.OpenWeather
DateTimeHelper.cs
using System;
namespace WeatherAnalysis.Core.Service.OpenWeather
{
public static class DateTimeHelper
{
public static int GetUnixTimestamp(this DateTime dateTime)
{
return Convert.ToInt32(dateTime.Subtract(new DateTime(1970, 1, 1)).TotalSeconds);
}
public static DateTime CreateFromTimestamp(int unixTimesamp)
{
return new DateTime(1970, 1, 1).AddSeconds(unixTimesamp);
}
}
}
DynamicJsonDeserializer.cs
using Newtonsoft.Json;
using RestSharp;
using RestSharp.Deserializers;
namespace WeatherAnalysis.Core.Service.OpenWeather
{
public class DynamicJsonDeserializer : IDeserializer
{
public string RootElement { get; set; }
public string Namespace { get; set; }
public string DateFormat { get; set; }
public T Deserialize<T>(IRestResponse response)
{
return JsonConvert.DeserializeObject<dynamic>(response.Content);
}
}
}
OpenWeatherService.cs
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using RestSharp;
using WeatherAnalysis.Core.Exceptions;
using WeatherAnalysis.Core.Model;
namespace WeatherAnalysis.Core.Service.OpenWeather
{
public class OpenWeatherService : IWeatherService
{
private const string BaseApiUrl = @"http://api.openweathermap.org/data/2.5/";
private readonly IRestClient _restClient;
public static OpenWeatherService CreateService()
{
try
{
var restClient = new RestClient(BaseApiUrl);
var apiKey = ConfigurationManager.AppSettings["openWeatherApiKey"];
restClient.AddDefaultHeader("x-api-key", apiKey);
restClient.AddHandler("application/json", new DynamicJsonDeserializer());
return new OpenWeatherService(restClient);
}
catch (ConfigurationErrorsException e)
{
throw new WeatherAnalysisException("openWeatherApiKey hasn't found in config.xml", e);
}
}
public OpenWeatherService(IRestClient restClient)
{
_restClient = restClient;
}
public IReadOnlyCollection<WeatherRecord> GetWeatherData(Location location, DateTime from, DateTime to)
{
var request = PrepareRequest(location.SystemName);
var response = _restClient.Execute<dynamic>(request);
if (response.Data.list == null) throw new WeatherServiceException("Weather data load error.");
var forecast = ExtractForecast(response.Data, from, to);
var result = CreateWeatherRecords(location, forecast);
return result.AsReadOnly();
}
private IRestRequest PrepareRequest(string locationName)
{
var request = new RestRequest("/forecast", Method.GET);
request.AddQueryParameter("q", locationName);
return request;
}
private List<dynamic> ExtractForecast(dynamic data, DateTime from, DateTime to)
{
var todayForecast = new List<dynamic>();
foreach (var weatherData in data.list)
{
var date = DateTimeHelper.CreateFromTimestamp(Convert.ToInt32(weatherData.dt));
if (IsBetween(from, date, to))
{
todayForecast.Add(weatherData);
}
}
return todayForecast;
}
private bool IsBetween(DateTime from, DateTime date, DateTime to)
{
return date >= from && date <= to;
}
private static List<WeatherRecord> CreateWeatherRecords(Location location, List<dynamic> todayForecast)
{
return todayForecast.Select(weatherData => new WeatherRecord
{
Created = DateTimeHelper.CreateFromTimestamp(Convert.ToInt32(weatherData.dt)),
Humidity = Convert.ToDecimal(weatherData.main.humidity),
Location = location,
LocationId = location.Id,
Precipitation = Convert.ToDecimal(weatherData.rain == null ? 0 : weatherData.rain["3h"]),
Temperature = Convert.ToDecimal(weatherData.main.temp) - 273
}).ToList();
}
}
}
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