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TabBarViewController.swift
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TabBarViewController.swift
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//
// TabBarViewController.swift
// OnTheMap
//
// Created by André Brinkop on 04.12.16.
// Copyright © 2016 André Brinkop. All rights reserved.
//
import UIKit
class TabBarViewController: UITabBarController {
// MARK: Properties
private let dataSource = LocationDataSource.shared
private let overwritePromtMessage = "You Have Already Posted a Student Location. Would You Like to Overwrite Your Current Location?"
// MARK: Actions
@IBAction func logout() {
self.dismiss(animated: true) {
UdacityClient.shared.logout() { error in
guard error == nil else {
print("Error while logging out:", error!)
return
}
}
}
}
@IBAction func addLocation() {
if dataSource.isRefreshing {
return
}
if dataSource.didUserAlreadyPostLocation {
displayOverwritePromt()
return
}
performSegue(withIdentifier: "postLocation", sender: nil)
}
@IBAction func refreshLocations() {
dataSource.updateData()
}
// MARK: Overwrite Promt
private func displayOverwritePromt() {
let alertController = UIAlertController(title: "", message: overwritePromtMessage, preferredStyle: UIAlertControllerStyle.alert)
alertController.addAction(UIAlertAction(title: "Overwrite", style: UIAlertActionStyle.default, handler: { action in
self.performSegue(withIdentifier: "postLocation", sender: nil)
}))
alertController.addAction(UIAlertAction(title: "Cancel", style: UIAlertActionStyle.cancel, handler: nil))
self.present(alertController, animated: true, completion: nil)
}
}