AddTripsViewController.swift

//
//  AddTripsViewController.swift
//  Tripy
//
//  Created by Chris  on 11/19/18.
//  Copyright © 2018 Chris . All rights reserved.
//

import UIKit
import Photos
import Firebase


class AddTripsViewController: UIViewController {

    var ref: DatabaseReference!   //Firebase reference
    
    @IBOutlet weak var TripTextField: UITextField!
    @IBOutlet weak var titleLabel: UILabel!
    
    var doneSaving: (() -> ())?
    var tripIndexToEdit: Int?
    var tripfunctions = TripFunctions()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        //set the Firebase reference
       
        ref = Database.database().reference().child("plans");  
        
        if let index = tripIndexToEdit {
            let trip = Data.tripModels[index]
            TripTextField.text = trip.name
            Userimage.image = trip.image 
        }
        // Do any additional setup after loading the view.
    }
    @IBOutlet weak var imageView: UIButton!  //the camera icon
    
    @IBAction func addPhoto(_ sender: Any) { //choose a background picture from photo library
        if UIImagePickerController.isSourceTypeAvailable(.photoLibrary) {
            PHPhotoLibrary.requestAuthorization { (status) in
                switch status {
                case .authorized:
                    let myPickerController = UIImagePickerController()
                    myPickerController.delegate = self
                    myPickerController.sourceType = .photoLibrary
                    self.present(myPickerController, animated: true)
                    
                case .notDetermined:
                    break
    
                    
                case .restricted:
                    let alert = UIAlertController(title: "Photo Library Restricted", message: "Photo library access is restricted and cannot be accessed.", preferredStyle: .alert)
                    let okAction = UIAlertAction(title: "ok", style: .default)
                
                case .denied:
                    let alert = UIAlertController(title: "Photo Library Denied", message: "Photo library access is restricted and cannot be accessed.", preferredStyle: .alert)
                    let gotoSettingsAction = UIAlertAction(title: "Go to settings", style: .default) {(action) in
                        DispatchQueue.main.async {
                            let url = URL(string: UIApplication.openSettingsURLString)!
                            UIApplication.shared.open(url, options: [:])
                        }
                    }
                    let cancalAction = UIAlertAction(title: "cancel", style: .cancel)
                    alert.addAction(gotoSettingsAction)
                    alert.addAction(cancalAction)
                }
                
            }
        }
    }

    @IBOutlet weak var Userimage: UIImageView! //the background image that user chooses
    
    @IBAction func cancelButton(_ sender: Any) {
        dismiss(animated: true)
    }
    
    @IBAction func saveButton(_ sender: Any) {
        TripTextField.rightViewMode = .never
        
        guard TripTextField.text != "", let newTripName = TripTextField.text else {
            let imageView = UIImageView(frame:  CGRect(x: 0, y: 0, width: 30, height: 20))
            imageView.image = UIImage(named: "error")
            imageView.contentMode = .scaleAspectFit
            TripTextField.rightView = imageView
            TripTextField.rightViewMode = .always
            return
        }
        if let index = tripIndexToEdit{
            tripfunctions.updateTrip(at: index , title: newTripName, image: Userimage.image)
            
        } else {
            let existed = ExistedPlansTableViewController()
            existed.plans.append(TripModel(name: "Berkeley", image: #imageLiteral(resourceName: "yosemite")))
            existed.mytableView?.reloadData()
            
 //           tripfunctions.createTrip(tripModel: TripModel(name: TripTextField.text!))
        
    }
   
        if let doneSaving = doneSaving {
            doneSaving()
        }
        dismiss(animated: true)
    }
    
    /*
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destination.
        // Pass the selected object to the new view controller.
    }
    */

}



extension AddTripsViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate{
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

   if let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {
    self.Userimage.image = image
}
    dismiss(animated: true)
}

func imagePickerControllerDidCancel(_ picker: UIImagePickerController){
    dismiss(animated:true )
}
}


fileprivate func convertFromUIImagePickerControllerInfoKeyDictionary(_ input: [UIImagePickerController.InfoKey: Any])-> [String:Any]{
    return Dictionary(uniqueKeysWithValues: input.map{key,value in (key.rawValue, value)})
}

fileprivate func convertFromUIImagePickerControllerInfoKey (_ input: UIImagePickerController.InfoKey) -> String{
    return input.rawValue

}
//    {
//        guard let selectedImage = info[.originalImage] as? UIImage else {
//             print("Error: \(info)")
//             return
//        }
//            self.Userimage.image = selectedImage
//            self.Userimage.contentMode = .scaleAspectFill
//
//        dismiss(animated:true)
//    }}