elpha-ios/elpha-ios/InstanceViewController.swift

//
//  InstanceViewController.swift
//  elpha-ios
//
//  Created by Dwayne Harris on 9/17/18.
//  Copyright © 2018 Elpha. All rights reserved.
//

import Foundation
import UIKit
import SafariServices

class InstanceViewController: UIViewController, SFSafariViewControllerDelegate {
    @IBOutlet var thumbnailImageView: UIImageView!
    @IBOutlet var instanceNameLabel: UILabel!
    @IBOutlet var instanceDescriptionLabel: UILabel!
    @IBOutlet var webViewButton: UIButton!
    
    var instance: ISInstanceMO? = nil
    
    @IBAction func webViewButtonPressed(_ sender: Any) {
        guard let instance = instance, let name = instance.name else {
            return
        }
        
        let safariViewController = SFSafariViewController(url: URL(string: "https://\(name)")!)
        safariViewController.delegate = self
        
        present(safariViewController, animated: true)
    }
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        webViewButton.layer.cornerRadius = 15
        if let instance = instance, let name = instance.name {
            navigationItem.title = name
        }
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        
        guard let instance = self.instance else {
            fatalError("No instance")
        }
        
        instanceNameLabel.text = instance.name
        
        if (instance.fullDescription ?? "").isEmpty {
            instanceDescriptionLabel.text = "(No description)"
        } else {
            instanceDescriptionLabel.text = instance.fullDescription
        }
        
        if let thumbnail = instance.thumbnail {
            ImageCache.shared.getImage(forURL: thumbnail) { image, error in
                guard error == nil else {
                    return
                }
                
                DispatchQueue.main.async {
                    self.thumbnailImageView.image = image
                }
            }
        }
    }
}