A Swift-based interface to the OpenStreetMap Overpass API.
The simple way is to compose the nodeQuery(boundingBox:tags:) or wayQuery(boundingBox:tags:) functions with an OverpassService object (provided is the DefaultOverpassService implementation, like so:
let baseURL = URL(string: "https://example.com/overpass_api")!
let httpClient = URLSession(configuration: URLSessionConfiguration.default)
let service = DefaultOverpassService(baseURL: baseURL, httpClient: httpClient)
let boundingBox = BoundingBox(south: 1.5, west: 1.75, north: 2.5, east: 2.75)
let tags: Set<Tag> = [.hasKey("hello"), .hasValue(key: "good", value: "bye")]
let query = nodeQuery(boundingBox: boundingBox, tags: tags)
service.query(query).then { (res: Result<Response, OverpassServiceError>) in
dump(res)
}the OverpassService protocol also provides a way for you to look at the raw JSON response, for debugging (or maybe you're just interested in that). Additionally, you can pass in your own queries, as nodeQuery(boundingBox:tags:) and wayQuery(boundingBox:tags:) are both relatively simple query generators.