How to read and show the data of a [String : Data] in Swift?

Question

I am very new to Swift and having issues on how to deal with the "String" part from [String : Hour] in my file. Could you please help me?

MeteoClassic.swift as follows:

struct MeteoClassic: Codable {
    let lat: Int
    let data: DataClass
}

enum CodingKeys: String, CodingKey {
        case data
    }

struct DataClass: Codable {
    let week: [String: Week]
    let hours: [String: Hour]
}

struct Hour: Codable {
    let temp: Int
    let rainfall: Double

    enum CodingKeys: String, CodingKey {
        case temp, rainfall
    }
}

struct Week: Codable {
    let date: String
    let tmin, tmax: Int
    let symbol: String
}

MeteoClassicSevice.swift as follows:

class MeteoClassicSevice {
    let url = URL(string: "https://api...")!
    
    func getWeather(completion: @escaping (Result<(MeteoClassic), Error>) -> Void) {
        URLSession.shared.dataTask(with: url) { data, response, error in
            guard error == nil else {
                completion(.failure(error!))
                return
            }
            completion(.success(self.getWeatherResponse(fromData: data!)))
          
        }.resume()
    }
    
    private func getWeatherResponse(fromData data: Data) -> (MeteoClassic) {
        let weatherData = try? JSONDecoder().decode(MeteoClassic.self, from: data)
        if weatherData != nil {
          print(weatherData!)
          return weatherData!
        }
      return MeteoClassic(lat: 0, data: DataClass(week: ["err" : Week(date: "We",tmin: 99, tmax: 99, symbol: "ERR")], hours: ["err" : Hour(temp: 44, rainfall: 0.9)]) )
    }
}

MeteoClassicTimeline.swift as follows:

...
    func getTimeline(in context: Context, completion: @escaping (Timeline<MeteoClassicEntry>) -> Void) {
        let currentDate = Date()
        let refreshDate = Calendar.current.date(byAdding: .minute, value: 15, to: currentDate)!
        
      MeteoClassicSevice().getWeather { (result) in
            let weatherInfo: MeteoClassic
            
            if case .success(let fetchedData) = result {
                weatherInfo = fetchedData
              print(weatherInfo)
            } else {
              let errWeather = MeteoClassic(lat: 0, data: DataClass(week: ["err" : Week(date: "Nu" ,tmin: 99, tmax: 99, symbol: "ER")], hours: ["err" : Hour(temp: 44, rainfall: 0.9)]) )
                weatherInfo = errWeather
            }
            
            let entry = MeteoClassicEntry(date: currentDate, weatherInfo: weatherInfo)
            let timeline = Timeline(entries: [entry], policy: .after(refreshDate))
            completion(timeline)
        }
}

and

struct MeteoClassicEntry: TimelineEntry {
    public let date: Date
    public let weatherInfo: MeteoClassic}

and the data looks like this:

{"meteostation_place":
    ...,
    "data":{
        "week":
            {
            "day0":{"date":"20210101","tmin":-2,"tmax":4,"symbol":"O"},
            "day1":{"date":"20210102","tmin":-3,"tmax":2,"symbol":"O"},
            ...
        },
            "hours"
            :{"2021010114":
                {"temp":4,"datumcas":"2021-01-01T14:00:00+01:00","rainfall":0,"rainfall_probability":0,"symbol":"O","wind_dir":"S","wind_speed":1,"pressure":1006.8},
            "2021010115":{"temp":2,"datumcas":"2021-01-01T15:00:00+01:00","rainfall":0,"rainfall_probability":0,"symbol":"O","wind_dir":"SV","wind_speed":1,"pressure":1007.1},
            "2021010116":{"temp":1,"datumcas":"2021-01-01T16:00:00+01:00","rainfall":0,"rainfall_probability":0,"symbol":"O","wind_dir":"SZ","wind_speed":2,"pressure":1007.7},
            "2021010117":{"temp":-0,"datumcas":"2021-01-01T17:00:00+01:00","rainfall":0,"rainfall_probability":0,"symbol":"O","wind_dir":"SZ","wind_speed":1,"pressure":1008.2},
            "2021010118":{"temp":-0,"datumcas":"2021-01-01T18:00:00+01:00","rainfall":0,"rainfall_probability":0,"symbol":"P","wind_dir":"SZ","wind_speed":1,"pressure":1008.6},
        ...
        }

I managed to get from week like this:

    struct MeteoClassicMediumView: View {
        let weather: MeteoClassic
        
        var body: some View {
          
          let meteoToday = weather.data.week["day0", default: Week(date: "05",tmin: 88, tmax: 99, symbol: "CC")] 
...
   Text("(meteoToday.tmin)|(meteoToday.tmax)" as String).font(.system(size: 13)).padding(.top, 2)

I found this way how to show the "tmin" and "tmax" in Week. But I do not know how would I write to show for "day0", "day1"...

let myString = weather.data.week."day0" ...?

Answer 1

等待大神答复