/// <summary>
/// Queries the Bing Maps Service with a given search query, confidence and userLocation and returns a list of locations that match the query
/// </summary>
/// <param name="query">Search query</param>
/// <param name="minimumConfidence">Minimum confidence by which to filter the search results</param>
/// <param name="userPosition">User's location that is used to improve search results</param>
/// <returns></returns>
public static async Task<List<Location>> GetLocationByQuery(string query, Confidence minimumConfidence, OneBusAway.Model.Point userPosition)
{
if (string.IsNullOrEmpty(query))
{
throw new ArgumentNullException(query);
}
Dictionary<string, string> queryParameters = Helpers.GetBasicParameters();
queryParameters.Add(UtilitiesConstants.Parameter_Query, query);
if (userPosition != null)
{
queryParameters.Add(UtilitiesConstants.Parameter_UserLocation, userPosition.Latitude + "," + userPosition.Longitude);
}
string url = Helpers.CreateServiceUrl(UtilitiesConstants.BingLocationServiceBaseAddress, queryParameters);
Response response = await Helpers.GetJsonResponse<Response>(url);
return Helpers.FilterResults<Location>(response, minimumConfidence);
}
/// <summary>
/// Returns a list of suggestions for the user the OBA list of routes.
/// </summary>
public async Task<IEnumerable<string>> GetSuggestionsAsync(string query, OneBusAway.Model.Point userLocation)
{
var obaDataAccess = ObaDataAccess.Create();
var listOfAllRoutes = await obaDataAccess.GetAllRoutesForCurrentRegionAsync();
return from result in listOfAllRoutes
where (result.ShortName != null && result.ShortName.IndexOf(query, StringComparison.OrdinalIgnoreCase) > -1)
|| (result.Description != null && result.Description.IndexOf(query, StringComparison.OrdinalIgnoreCase) > -1)
select string.Format(CultureInfo.CurrentCulture, "BUS {0}", result.ShortName);
}
/// <summary>
/// Searches all agencies for all bus numbers.
/// </summary>
public async Task SearchAsync(string query, OneBusAway.Model.Point userLocation)
{
this.NoSearchResultsText = string.Format(CultureInfo.CurrentCulture, "SEARCHING FOR '{0}'", query);
try
{
if (string.IsNullOrEmpty(query))
{
this.SearchResults.Clear();
this.BingMapsSearchResults = null;
}
else
{
// If the user selected a suggestion, then that means they want a specific bus:
if (query.StartsWith("BUS", StringComparison.OrdinalIgnoreCase))
{
await DisplayAndSelectSpecificRouteAsync(query.Substring(3).Trim());
}
else
{
var listOfAllRoutes = await this.LoadAllRoutesAsync();
// Let's filter the results!
var newItems = (from result in listOfAllRoutes
where (result.ShortName != null && result.ShortName.IndexOf(query, StringComparison.OrdinalIgnoreCase) > -1)
|| (result.Description != null && result.Description.IndexOf(query, StringComparison.OrdinalIgnoreCase) > -1)
select new SearchRouteResultViewModel(result));
await this.uiHelper.BatchAddItemsAsync(this.searchResults, newItems);
var bingMapResults = await BingMapsServiceHelper.GetLocationByQuery(query, Utilities.Confidence.Medium, userLocation);
this.BingMapsSearchResults = (from result in bingMapResults
select new SearchLocationResultViewModel(result)).ToArray();
}
}
}
catch
{
}
this.NoSearchResultsText = "NO RESULTS";
}
