1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
using System.Globalization;
using Enmarcha.Backend.Configuration;
using Enmarcha.Backend.Types.Geoapify;
using Enmarcha.Backend.Types.Planner;
using Microsoft.Extensions.Caching.Memory;
using Microsoft.Extensions.Options;
namespace Enmarcha.Backend.Services.Geocoding;
public class GeoapifyGeocodingService : IGeocodingService
{
private readonly HttpClient _httpClient;
private readonly IMemoryCache _cache;
private readonly ILogger<GeoapifyGeocodingService> _logger;
private readonly AppConfiguration _config;
private static readonly string[] ForbiddenResultTypes = ["city", "state", "county", "postcode"];
public GeoapifyGeocodingService(HttpClient httpClient, IMemoryCache cache, ILogger<GeoapifyGeocodingService> logger, IOptions<AppConfiguration> config)
{
_httpClient = httpClient;
_cache = cache;
_logger = logger;
_config = config.Value;
// Geoapify requires a User-Agent
if (!_httpClient.DefaultRequestHeaders.Contains("User-Agent"))
{
_httpClient.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Compatible; Enmarcha/0.1; https://enmarcha.app; contacto@enmarcha.app)");
}
}
public async Task<List<PlannerSearchResult>> GetAutocompleteAsync(string query)
{
using var activity = Telemetry.Source.StartActivity("GeoapifyAutocomplete");
activity?.SetTag("query", query);
if (string.IsNullOrWhiteSpace(query))
{
return [];
}
var cacheKey = $"nominatim_autocomplete_{query.ToLowerInvariant()}";
var cacheHit = _cache.TryGetValue(cacheKey, out List<PlannerSearchResult>? cachedResults);
activity?.SetTag("cache.hit", cacheHit);
if (cacheHit && cachedResults != null)
{
return cachedResults;
}
var url = $"https://api.geoapify.com/v1/geocode/autocomplete?text={Uri.EscapeDataString(query)}&lang=gl&limit=5&filter=rect:-9.449497230816405,41.89720361654395,-6.581039728137625,43.92616367306067&format=json";
try
{
var httpResponse = await _httpClient.GetAsync(url + $"&apiKey={_config.GeoapifyApiKey}");
if (!httpResponse.IsSuccessStatusCode)
{
var body = await httpResponse.Content.ReadAsStringAsync();
_logger.LogWarning("Geoapify autocomplete returned {StatusCode} for query '{Query}': {Body}",
(int)httpResponse.StatusCode, query, body);
activity?.SetTag("http.status_code", (int)httpResponse.StatusCode);
return [];
}
var response = await httpResponse.Content.ReadFromJsonAsync<GeoapifyResult>();
var results = response?.results
.Where(x => !ForbiddenResultTypes.Contains(x.result_type))
.Select(MapToPlannerSearchResult)
.ToList() ?? [];
activity?.SetTag("results.count", results.Count);
_cache.Set(cacheKey, results, TimeSpan.FromMinutes(60));
return results;
}
catch (Exception ex)
{
activity?.SetStatus(System.Diagnostics.ActivityStatusCode.Error, ex.Message);
_logger.LogError(ex, "Error fetching Geoapify autocomplete results from {Url}", url);
return [];
}
}
public async Task<PlannerSearchResult?> GetReverseGeocodeAsync(double lat, double lon)
{
using var activity = Telemetry.Source.StartActivity("GeoapifyReverseGeocode");
var cacheKey = $"nominatim_reverse_{lat:F5}_{lon:F5}";
var cacheHit = _cache.TryGetValue(cacheKey, out PlannerSearchResult? cachedResult);
activity?.SetTag("cache.hit", cacheHit);
if (cacheHit && cachedResult != null)
{
return cachedResult;
}
var url =
$"https://api.geoapify.com/v1/geocode/reverse?lat={lat.ToString(CultureInfo.InvariantCulture)}&lon={lon.ToString(CultureInfo.InvariantCulture)}&lang=gl&format=json";
try
{
var httpResponse = await _httpClient.GetAsync(url + $"&apiKey={_config.GeoapifyApiKey}");
if (!httpResponse.IsSuccessStatusCode)
{
var body = await httpResponse.Content.ReadAsStringAsync();
_logger.LogWarning("Geoapify reverse geocode returned {StatusCode} for ({Lat},{Lon}): {Body}",
(int)httpResponse.StatusCode, lat, lon, body);
activity?.SetTag("http.status_code", (int)httpResponse.StatusCode);
return null;
}
var response = await httpResponse.Content.ReadFromJsonAsync<GeoapifyResult>();
if (response == null) return null;
var result = MapToPlannerSearchResult(response.results[0]);
_cache.Set(cacheKey, result, TimeSpan.FromMinutes(60));
return result;
}
catch (Exception ex)
{
activity?.SetStatus(System.Diagnostics.ActivityStatusCode.Error, ex.Message);
_logger.LogError(ex, "Error fetching Geoapify reverse geocode results from {Url}", url);
return null;
}
}
private PlannerSearchResult MapToPlannerSearchResult(Result result)
{
var name = result.name ?? result.address_line1;
var label = $"{result.street} ({result.postcode} {result.city}, {result.county})";
return new PlannerSearchResult
{
Name = name,
Label = label,
Lat = result.lat,
Lon = result.lon,
Layer = result.result_type
};
}
}
|
