TodayViewController of widget

TodayViewController.swift

//
//  TodayViewController.swift
//  NowWidget
//
//  Created by appName on 23-01-17.
//
//

import UIKit
import NotificationCenter


class TodayViewController: UIViewController, NCWidgetProviding {
    
    private struct sharedData {
        static var baseUrl: String?
        static var token: String?
        static var phoneDeviceId: String?
        static var buttons: Array<Button>?
    }
    
    private struct Button {
        var color: String
        var id: String
        var name: String
    }
    
    @IBOutlet weak var spinner: UIActivityIndicatorView!
    @IBOutlet weak var appButton: UIButton!
    @IBAction func openApp(sender: AnyObject) {
        print("Should open appName...")
        extensionContext?.openURL(NSURL(string: "appName://buttons")!, completionHandler: nil)
    }
    
    func loadData() -> Bool {
        let groupIdentifier = "group." + NSBundle.mainBundle().bundleIdentifier!
        var groupIdArray = groupIdentifier.componentsSeparatedByString(".")
        groupIdArray.removeAtIndex(groupIdArray.count - 1)
        let appGroupIdentifier = groupIdArray.joinWithSeparator(".");

        let userDefaults = NSUserDefaults.init(suiteName: appGroupIdentifier)
        if (userDefaults == nil) {
            print("Error in user defaults")
            setButtonTitle("Not logged in. Open appName to continue.")
            return false
        }
        sharedData.baseUrl = userDefaults?.valueForKey("baseUrl") as? String
        sharedData.token = userDefaults?.valueForKey("token") as? String
        sharedData.phoneDeviceId = userDefaults?.valueForKey("phoneDeviceId") as? String
        let buttons = userDefaults?.valueForKey("buttons") as? NSArray
        
        if (sharedData.baseUrl == nil || sharedData.token == nil || sharedData.phoneDeviceId == nil || buttons == nil) {
            print("Missing data")
            setButtonTitle("Not logged in. Open appName to continue.")
            return false
        }
        
        if (buttons?.count == 0) {
            print("No buttons configured")
            setButtonTitle("No buttons configured. Open appName to continue.")
            return false;
        }
        
        var list: Array<Button> = []
        for (_, element) in buttons!.enumerate() {
            let button = Button(color: element["color"]! as! String, id: element["id"]! as! String, name: element["name"]! as! String)
            list.append(button)
        }
        sharedData.buttons = list
        NSLog("Data initialized. \nServer baseURL: \n\(sharedData.baseUrl!), \ntoken: \n\(sharedData.token!),\nuuid: \n\(sharedData.phoneDeviceId!)");
        return true;
    }
    
    func setButtonTitle(message: String) {
        spinner.stopAnimating()
        appButton.setTitle(message, forState: .Normal)
    }
    
    func buttonAction(sender: UIButton!) {
        // Not important, actually works
    }
    
    func touchUp(sender: UIButton!) {
        sender.backgroundColor = colorFromName(sharedData.buttons![sender.tag].color)
    }
    
    func touchDown(sender: UIButton!) {
        sender.backgroundColor = colorFromName(sharedData.buttons![sender.tag].color).darkerColor(0.5)
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    func widgetPerformUpdateWithCompletionHandler(completionHandler: ((NCUpdateResult) -> Void)) {
        // Perform any setup necessary in order to update the view.
        
        if (loadData()) {
            print(sharedData.buttons)
            appButton.hidden = true
            spinner.stopAnimating()
            for (index, element) in sharedData.buttons!.enumerate() {
                if index > 5 {
                    return
                }
                print("Item \(index): \(element)")
                let button = drawButton(view, index, colorFromName(element.color), element.name)
                
                button.addTarget(self, action: #selector(buttonAction), forControlEvents: .TouchUpInside)
                button.addTarget(self, action: #selector(touchUp), forControlEvents: .TouchUpInside)
                button.addTarget(self, action: #selector(touchUp), forControlEvents: .TouchDragExit)
                button.addTarget(self, action: #selector(touchUp), forControlEvents: .TouchUpOutside)
                button.addTarget(self, action: #selector(touchUp), forControlEvents: .TouchCancel)
                button.addTarget(self, action: #selector(touchDown), forControlEvents: .TouchDown)
                view.addSubview(button)
            }
        }
        completionHandler(NCUpdateResult.NewData)
    }
}