XZnMaRWT

1
2import Foundation
3
4struct Weather{
5    let summary:String
6    let icon:String
7    let temperatureMin:Double
8    let temperatureMax: Double
9    let windSpeed: Double
10    let windDirection: Double
11    let pressure: Double
12    let dewPoint: Double // rain probability
13
14    enum SerializationError:Error {
15        case missing(String)
16        case invalid(String, Any)
17    }
18
19// https://api.darksky.net/forecast/965b5e1f6514ee3a66017c215d128973/42.3601,-71.0589,255657600?units=si&exclude=currently,minutely,hourly,alerts,flags
20init(json:[String:Any]) throws {
21        guard let summary = json["summary"] as? String else {throw SerializationError.missing("Summary is missing")}
22        guard let icon = json["icon"] as? String else {throw SerializationError.missing("icon is missing")}
23        guard let temperatureMin = json["temperatureMin"] as? String else {throw SerializationError.missing("temperatureMin is missing")}
24        guard let temperatureMax = json["temperatureMax"] as? String else {throw SerializationError.missing("temperatureMax is missing")}
25        guard let windSpeed = json["windSpeed"] as? String else {throw SerializationError.missing("windSpeed is missing")}
26        guard let windDirection = json["windBearing"] as? String else {throw SerializationError.missing("windBearing is missing")}
27        guard let dewPoint = json["dewPoint"] as? String else {throw SerializationError.missing("dewPoint is missing")}
28
29        self.summary = summary
30        self.icon = icon
31        self.temperatureMin = temperatureMin
32        self.temperatureMax = temperatureMax
33        self.windSpeed = windSpeed
34        self.windDirection = windDirection
35        self.pressure = pressure
36        self.dewPoint = dewPoint
37    }
38
39    static let basePath = "https://api.darksky.net/forecast/"
40    static let secretKey = "965b5e1f6514ee3a66017c215d128973"
41
42    static func forecast (withLocation location:String, completion: @escaping ([Weather]) -> ()) {
43        let url = basePath + secretKey + "/" + location
44        let request = URLRequest(url: URL(string: url)!)
45
46        let task = URLSession.shared.dataTask(with: request) { (data:Data?, response:URLResponse?, error:Error?) in 
47
48            var forecastArray:[Weather] = []
49
50            if let data = data {
51                do { 
52                    if let json = try JSONSerialization.jsonObject(with: data, options: []) as? [String:Any] {
53                        if let dailyForecasts = json["daily"] as? [String:Any] {
54                            if let dailyData = dailyForecasts["data"] as? [[String:Any]] {
55                                for dataPoint in dailyData {
56                                    if let weatherObject = try? Weather(json: dataPoint) { 
57                                        forecastArray.append(weatherObject) 
58                                    }
59                                }
60                            }
61                        }
62                    }
63                } catch {
64                    print(error.localizedDescription)
65                }
66
67                completion(forecastArray)
68            }
69
70
71        }
72
73        task.resume()
74    }
75}
76
77
78
79
80
81import UIKit
82
83class ViewController: UIViewController {
84    override fun viewDidLoad() {
85        super.viewDidLoad
86
87        Weather.forecast(withLocation: "37.8267,-122.4233") { (results:[Weather]) in
88            for result in results {
89                print("\(result)\n\n")
90            }
91        }
92    }
93}