/// <summary>
/// Calls the Google Places API to retrieve autofill suggestions
/// </summary>
/// <returns>The places.</returns>
/// <param name="newTextValue">New text value.</param>
/// <param name="apiKey">The API key</param>
/// <param name="bias">The location bias (can be NULL)</param>
/// <param name="components">The components (can be NULL)</param>
/// <param name="type">Filter for the returning types </param>
/// <param name="language">The language of the results</param>
public static async Task <AutoCompleteResult> GetPlaces(string newTextValue, string apiKey, LocationBias bias, Components components, PlaceType type, GoogleAPILanguage language)
{
if (string.IsNullOrEmpty(apiKey))
{
throw new Exception("You have not assigned a Google API key to PlacesBar");
}
try
{
var requestURI = CreatePredictionsUri(newTextValue, apiKey, bias, components, type, language);
var client = new HttpClient();
var request = new HttpRequestMessage(HttpMethod.Get, requestURI);
var response = await client.SendAsync(request);
if (!response.IsSuccessStatusCode)
{
Debug.WriteLine("PlacesBar HTTP request denied.");
return(null);
}
var result = await response.Content.ReadAsStringAsync();
if (result == "ERROR")
{
Debug.WriteLine("PlacesSearchBar Google Places API returned ERROR");
return(null);
}
return(AutoCompleteResult.FromJson(JObject.Parse(result)));
}
catch (Exception ex)
{
Debug.WriteLine("PlacesBar HTTP issue: {0} {1}", ex.Message, ex);
return(null);
}
}
/// <summary>
/// Creates the predictions URI.
/// </summary>
/// <returns>The predictions URI.</returns>
/// <param name="newTextValue">New text value.</param>
/// <param name="apiKey">The API key</param>
/// <param name="bias">The location bias (can be NULL)</param>
/// <param name="components">The components (can be NULL)</param>
/// <param name="type">Filter for the returning types </param>
/// <param name="language">The language of the results</param>
private static string CreatePredictionsUri(string newTextValue, string apiKey, LocationBias bias, Components components, PlaceType type, GoogleAPILanguage language)
{
var url = "https://maps.googleapis.com/maps/api/place/autocomplete/json";
var input = Uri.EscapeUriString(newTextValue);
var pType = PlaceTypeValue(type);
var constructedUrl = $"{url}?input={input}&types={pType}&key={apiKey}";
if (bias != null)
{
constructedUrl = constructedUrl + bias;
}
if (components != null)
{
constructedUrl += components;
}
if (language != GoogleAPILanguage.Unset)
{
constructedUrl += "&Language=" + GoogleAPILanguageHelper.ToAPIString(language);
}
return(constructedUrl);
}
public static string ToAPIString(GoogleAPILanguage lng)
{
// https://developers.google.com/maps/faq#languagesupport
switch (lng)
{
case GoogleAPILanguage.Afrikaans: return("af");
case GoogleAPILanguage.Albanian: return("sq");
case GoogleAPILanguage.Amharic: return("am");
case GoogleAPILanguage.Arabic: return("ar");
case GoogleAPILanguage.Armenian: return("ar");
case GoogleAPILanguage.Azerbaijani: return("az");
case GoogleAPILanguage.Basque: return("eu");
case GoogleAPILanguage.Belarusian: return("be");
case GoogleAPILanguage.Bengali: return("bn");
case GoogleAPILanguage.Bosnian: return("bs");
case GoogleAPILanguage.Bulgarian: return("bg");
case GoogleAPILanguage.Burmese: return("my");
case GoogleAPILanguage.Catalan: return("ca");
case GoogleAPILanguage.Chinese: return("zh");
case GoogleAPILanguage.ChineseSimplified: return("zh-CN");
case GoogleAPILanguage.ChineseHongKong: return("zh-HK");
case GoogleAPILanguage.ChineseTraditional: return("zh-TW");
case GoogleAPILanguage.Croatian: return("hr");
case GoogleAPILanguage.Czech: return("cs");
case GoogleAPILanguage.Danish: return("da");
case GoogleAPILanguage.Dutch: return("nl");
case GoogleAPILanguage.English: return("en");
case GoogleAPILanguage.EnglishAustralian: return("en-AU");
case GoogleAPILanguage.EnglishGreatBritain: return("en-GB");
case GoogleAPILanguage.Estonian: return("et");
case GoogleAPILanguage.Farsi: return("fa");
case GoogleAPILanguage.Finnish: return("fi");
case GoogleAPILanguage.Filipino: return("fil");
case GoogleAPILanguage.French: return("fr");
case GoogleAPILanguage.FrenchCanada: return("fr-CA");
case GoogleAPILanguage.Galician: return("gl");
case GoogleAPILanguage.Georgian: return("ka");
case GoogleAPILanguage.German: return("de");
case GoogleAPILanguage.Greek: return("el");
case GoogleAPILanguage.Gujarati: return("gu");
case GoogleAPILanguage.Hebrew: return("iw");
case GoogleAPILanguage.Hindi: return("hi");
case GoogleAPILanguage.Hungarian: return("hu");
case GoogleAPILanguage.Icelandic: return("is");
case GoogleAPILanguage.Indonesian: return("id");
case GoogleAPILanguage.Italian: return("it");
case GoogleAPILanguage.Japanese: return("ja");
case GoogleAPILanguage.Kannada: return("kn");
case GoogleAPILanguage.Kazakh: return("kk");
case GoogleAPILanguage.Khmer: return("km");
case GoogleAPILanguage.Korean: return("ko");
case GoogleAPILanguage.Kyrgyz: return("ky");
case GoogleAPILanguage.Lao: return("lo");
case GoogleAPILanguage.Latvian: return("lv");
case GoogleAPILanguage.Lithuanian: return("lt");
case GoogleAPILanguage.Macedonian: return("mk");
case GoogleAPILanguage.Malay: return("ms");
case GoogleAPILanguage.Malayalam: return("ml");
case GoogleAPILanguage.Marathi: return("mr");
case GoogleAPILanguage.Mongolian: return("mn");
case GoogleAPILanguage.Nepali: return("ne");
case GoogleAPILanguage.Norwegian: return("no");
case GoogleAPILanguage.Polish: return("pl");
case GoogleAPILanguage.Portuguese: return("pt");
case GoogleAPILanguage.PortugueseBrazil: return("pt-BR");
case GoogleAPILanguage.PortuguesePortugal: return("pt-PT");
case GoogleAPILanguage.Punjabi: return("pa");
case GoogleAPILanguage.Romanian: return("ro");
case GoogleAPILanguage.Russian: return("ru");
case GoogleAPILanguage.Serbian: return("sr");
case GoogleAPILanguage.Sinhalese: return("si");
case GoogleAPILanguage.Slovak: return("sk");
case GoogleAPILanguage.Slovenian: return("sl");
case GoogleAPILanguage.Spanish: return("es");
case GoogleAPILanguage.SpanishLatinAmerica: return("es-419");
case GoogleAPILanguage.Swahili: return("sw");
case GoogleAPILanguage.Swedish: return("sv");
case GoogleAPILanguage.Tamil: return("ta");
case GoogleAPILanguage.Telugu: return("te");
case GoogleAPILanguage.Thai: return("th");
case GoogleAPILanguage.Turkish: return("tr");
case GoogleAPILanguage.Ukrainian: return("uk");
case GoogleAPILanguage.Urdu: return("ur");
case GoogleAPILanguage.Uzbek: return("uz");
case GoogleAPILanguage.Vietnamese: return("vi");
case GoogleAPILanguage.Zulu: return("zu");
case GoogleAPILanguage.Unset: return("zu");
default: return("");
}
}
