import UIKit

class HomeViewController: UIViewController {

    var covidStatData: CovidStat?

    override func viewDidLoad() {
        super.viewDidLoad()
        print("viewDidLoad(): covidStatData before getCovidStat(): \(covidStatData)")
        getCovidStat()
        print("viewDidLoad(): covidStatData after getCovidStat(): \(covidStatData)")
    }


    func getCovidStatJSON(completion: @escaping (String?, Error?) -> Void) {
        print("getCovidStatJSON(completion:) start")
        let zipCd = User.currentUser?.zipCd
        let apiURL: String = "https://localcoviddata.com/covid19/v1/locations?zipCode=\(zipCd ?? "")"
        guard let cURL = URL(string: apiURL) else { return }
        let request = URLRequest(url: cURL)
        URLSession.shared.dataTask(with: request) { (data, response, error) in
            print("dataTask(with:) closure")
            if let str = String(data: data!, encoding: .utf8) {
                completion(str, nil)
            }
        }.resume()
        print("getCovidStatJSON(completion:) end")
    }

    func getCovidStat() {
        print("getCovidStat start")
        getCovidStatJSON(completion: { covidStatJSON, error in
            print("getCovidStatJSON(completion:) closure")
            if let covidStatJSON = covidStatJSON {
                let covidStatData = Data(covidStatJSON.utf8)
                let decoder = JSONDecoder()
                do {
                    print("Will set covidStatData")
                    self.covidStatData = try decoder.decode(CovidStat.self, from: covidStatData)
                    print("Did set covidStatData")
                    //Now that we set the value, let's use it
                    DispatchQueue.main.async {
                        //self.myLabel.text = self.covidStatData.zipCd
                        //...
                    }
                } catch {
                    print(error)
                }

            }
        })
        print("getCovidStat end")
    }
}