AddPostTableViewController.swift

//
//  AddPostTableViewController.swift
//  Timeline
//
//  Created by Uldis Zingis on 17/10/16.
//  Copyright © 2016 Uldis Zingis. All rights reserved.
//

import UIKit

class AddPostTableViewController: UITableViewController, PhotoSelectViewControllerDelegate {

    @IBOutlet weak var captionTextField: UITextField!
    var postImage: UIImage?
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    func photoSelectViewControllerSelectedImage(image: UIImage) {
        self.postImage = image
    }
    
    @IBAction func addPostTapped(_ sender: AnyObject) {
        guard let image = postImage, let caption = captionTextField.text else { presentAlert(); return }
        if caption != "" {
            PostController.sharedController.createPost(image: image, caption: caption)
            dismiss(animated: true, completion: nil)
        } else {
            presentAlert()
        }
    }
    
    func presentAlert() {
        let alert = UIAlertController(title: "Failed to create post", message: "Image/caption is missing.", preferredStyle: .alert)
        let action = UIAlertAction(title: "Try again", style: .cancel, handler: nil)
        alert.addAction(action)
        self.present(alert, animated: true, completion: nil)
    }
    
    @IBAction func cancelButtonTapped(_ sender: AnyObject) {
        dismiss(animated: true, completion: nil)
    }
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "imagePicker" {
            guard let nextVC = segue.destination as? PhotoSelectViewController else { return }
            nextVC.delegate = self
        }
    }
}