/// <summary>
/// Get traffic status for region by <paramref name="regionCode"/>.
/// </summary>
/// <param name="regionCode"></param>
/// <returns></returns>
public Task <RegionTrafficStatus> GetRegionTrafficStatusAsync(string regionCode, DateTimeOffset dateTimeNow)
{
if (string.IsNullOrWhiteSpace(regionCode))
{
throw new ArgumentException("Argument is not valid!", nameof(regionCode));
}
return(Task.Run(() =>
{
var random = new Random();
string title = "SomeTitle_" + regionCode;
var randomLevel = random.Next(1, 5).ToString();
var randomIconId = random.Next(1, 3);
var randomMessageId = random.Next(1, 3);
var iconText = Icons.Where(icon => icon.Key == randomIconId).Single().Value;
var messageText = Messages.Where(icon => icon.Key == randomMessageId).Single().Value;
var regionTrafficStatus = new RegionTrafficStatus(
regionCode,
title,
dateTimeNow,
randomLevel,
iconText,
messageText);
return regionTrafficStatus;
}));
}
/// <summary>
/// Get traffic status for region by regionCode.
/// </summary>
/// <param name="regionCode"></param>
/// <param name="dateTimeNow"></param>
/// <returns></returns>
public async Task <RegionTrafficStatus> GetRegionTrafficStatusAsync(string regionCode, DateTimeOffset dateTimeNow)
{
if (string.IsNullOrWhiteSpace(regionCode))
{
throw new ArgumentException("Argument is not valid!", nameof(regionCode));
}
string url = $@"https://export.yandex.com/bar/reginfo.xml?region={regionCode}&bustCache={dateTimeNow}";
var xmlDoc = new XmlDocument();
try
{
var response = await Client.GetAsync(url);
response.EnsureSuccessStatusCode();
var stream = await response.Content.ReadAsStreamAsync();
xmlDoc.Load(stream);
var title = xmlDoc.SelectSingleNode("//title")?.InnerText ?? "There is no available information!";
var level = xmlDoc.SelectSingleNode("//level")?.InnerText ?? "There is no available information!";
var icon = xmlDoc.SelectSingleNode("//icon")?.InnerText ?? "There is no available information!";
var text = xmlDoc.SelectSingleNode("//hint[@lang='en']")?.InnerText ?? "There is no available information!";
var regionTrafficStatus = new RegionTrafficStatus(
regionCode,
title,
dateTimeNow,
level,
icon,
text);
return(regionTrafficStatus);
}
catch (Exception exception) when(exception.Message == "Root element is missing.")
{
return(null);
}
catch (Exception exception)
{
throw new TrafficServiceException("Could not read results of request to yandex", exception);
}
}
public async Task <RegionTrafficStatusModel> AddRegionTrafficStatusAsync(RegionTrafficStatus result)
{
if (result == null)
{
throw new ArgumentNullException(nameof(result));
}
using (var context = this.TrafficDataServiceProvider.GetDataService())
{
var regionToUpdate = context.Regions.FirstOrDefault(region => region.RegionCode == result.RegionCode);
var regionTrafficStatusModel = new RegionTrafficStatusModel();
if (regionToUpdate == null)
{
regionToUpdate = new RegionModel();
regionToUpdate.Id = Guid.NewGuid();
regionToUpdate.RegionCode = result.RegionCode;
regionToUpdate.RegionName = result.Title;
regionToUpdate.RegionTrafficStatuses = new List <RegionTrafficStatusModel> {
regionTrafficStatusModel
};
}
regionTrafficStatusModel.Id = Guid.NewGuid();
regionTrafficStatusModel.DateTimeNow = result.Time;
regionTrafficStatusModel.Region = regionToUpdate;
regionTrafficStatusModel.RegionId = regionToUpdate.Id;
regionTrafficStatusModel.TrafficIcon = result.Icon;
regionTrafficStatusModel.TrafficLevel = result.Level;
regionTrafficStatusModel.TrafficMessage = result.Text;
context.Add(regionTrafficStatusModel);
await context.SaveChangesAsync();
return(regionTrafficStatusModel);
}
}
