gistfile1.txt

let companies = ["A2M","CBA","AHG","ABC","CCL"]

for company in companies{
  let jsonUrlStringPrice = "https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=ASX:"+company+"&outputsize=100&apikey=demo"
  //API key need to be claim in AlphaVantage
  URLSession.shared.dataTask(with: url){ (data, response, err) in
                guard let data = data else {return}
                
                do{
                    let json = try JSONSerialization.jsonObject(with: data, options: .mutableContainers) as AnyObject
                    var symbols = ""
                    
                    if let information = json["Meta Data"] as? NSDictionary{
                        if let symbol = information["2. Symbol"]{
                            symbols = symbol as! String
                            if let range = symbols.range(of: ":"){
                                symbols = String(symbols[range.upperBound...])
                            }
                        }
                    }
                    if let prices = json["Time Series (Daily)"] as? NSDictionary{
                        guard let priceArray = prices as? [String: AnyObject] else {return}
                        for (key, value) in priceArray{
                            guard let open = value["1. open"] as? String else {return}
                            guard let high = value["2. high"] as? String else {return}
                            guard let low = value["3. low"] as? String else {return}
                            guard let close = value["4. close"] as? String else {return}
                            guard let volume = value["5. volume"] as? String else {return}
                            arrangeDate.append([key, open, high, low, close, volume])
                        }
                    }
                    let sortedArray = arrangeDate.sorted(by: {left, right in
                        let leftDate = self.dateFormater.date(from: left[0])
                        let rightDate = self.dateFormater.date(from: right[0])
                        return leftDate!.compare(rightDate!) == .orderedAscending
                    })
                    var finalArray = [DailyPrice]()
                    for var data in sortedArray{
                        finalArray.append(DailyPrice(date: data[0], open: Double(data[1])!, high: Double(data[2])!, low: Double(data[3])!, close: Double(data[4])!, volume: Int(data[5])!))
                    }
                    
                    self.listedCompanies.append(Company(symbol: symbols, dailyPrices: finalArray))
                    completion(self.listedCompanies)
               }catch let err{
                    print(err)
               }
               }.resume()
  
}