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88 lines
3.1 KiB
88 lines
3.1 KiB
6 months ago
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//-----------------------------------------------------------------------
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// <copyright file="Geocoder.cs" company="Mapbox">
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// Copyright (c) 2016 Mapbox. All rights reserved.
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// </copyright>
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//-----------------------------------------------------------------------
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namespace Mapbox.Geocoding
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{
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using System;
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using System.Text;
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using Mapbox.Json;
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using Mapbox.Platform;
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using Mapbox.Utils.JsonConverters;
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/// <summary>
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/// Wrapper around the <see href="https://www.mapbox.com/api-documentation/search/#geocoding">
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/// Mapbox Geocoding API</see>. The Geocoder does two things: geocoding and reverse geocoding.
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/// </summary>
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public sealed class Geocoder
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{
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private readonly IFileSource fileSource;
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/// <summary> Initializes a new instance of the <see cref="Geocoder" /> class. </summary>
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/// <param name="fileSource"> Network access abstraction. </param>
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public Geocoder(IFileSource fileSource)
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{
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this.fileSource = fileSource;
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}
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/// <summary> Performs asynchronously a geocoding lookup. </summary>
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/// <param name="geocode"> Geocode resource. </param>
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/// <param name="callback"> Callback to be called after the request is completed. </param>
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/// <typeparam name="T"> String or LngLat. Should be automatically inferred. </typeparam>
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/// <returns>
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/// Returns a <see cref="IAsyncRequest" /> that can be used for canceling a pending
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/// request. This handle can be completely ignored if there is no intention of ever
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/// canceling the request.
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/// </returns>
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public IAsyncRequest Geocode<T>(GeocodeResource<T> geocode, Action<ReverseGeocodeResponse> callback)
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{
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return this.fileSource.Request(
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geocode.GetUrl(),
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(Response response) =>
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{
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var str = Encoding.UTF8.GetString(response.Data);
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var data = Deserialize<ReverseGeocodeResponse>(str);
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callback(data);
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});
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}
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/// <summary> Performs asynchronously a geocoding lookup. </summary>
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/// <param name="geocode"> Geocode resource. </param>
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/// <param name="callback"> Callback to be called after the request is completed. </param>
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/// <typeparam name="T"> String or LngLat. Should be automatically inferred. </typeparam>
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/// <returns>
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/// Returns a <see cref="IAsyncRequest" /> that can be used for canceling a pending
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/// request. This handle can be completely ignored if there is no intention of ever
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/// canceling the request.
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/// </returns>
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public IAsyncRequest Geocode<T>(GeocodeResource<T> geocode, Action<ForwardGeocodeResponse> callback)
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{
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return this.fileSource.Request(
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geocode.GetUrl(),
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(Response response) =>
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{
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var str = Encoding.UTF8.GetString(response.Data);
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var data = Deserialize<ForwardGeocodeResponse>(str);
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callback(data);
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});
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}
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/// <summary>
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/// Deserialize the geocode response string into a <see cref="GeocodeResponse"/>.
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/// </summary>
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/// <param name="str">JSON String.</param>
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/// <returns>A <see cref="GeocodeResponse"/>.</returns>
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/// <typeparam name="T">Forward or reverse geocode. </typeparam>
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public T Deserialize<T>(string str)
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{
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return JsonConvert.DeserializeObject<T>(str, JsonConverters.Converters);
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}
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}
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}
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