//
//  DraftsTableViewController.swift
//  Tusker
//
//  Created by Shadowfacts on 10/22/18.
//  Copyright © 2018 Shadowfacts. All rights reserved.
//

import UIKit

protocol DraftsTableViewControllerDelegate {
    func draftSelectionCanceled()
    func draftSelected(_ draft: DraftsManager.Draft)
}

class DraftsTableViewController: UITableViewController {
    
    var delegate: DraftsTableViewControllerDelegate?
    
    init() {
        super.init(nibName: "DraftsTableViewController", bundle: nil)
        
        title = "Drafts"
        navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action: #selector(cancelPressed))
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        tableView.register(UINib(nibName: "DraftTableViewCell", bundle: nil), forCellReuseIdentifier: "draftCell")
    }
    
    func draft(for indexPath: IndexPath) -> DraftsManager.Draft {
        return DraftsManager.shared.sorted[indexPath.row]
    }
    
    // MARK: - Table View Data Source
    
    override func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return DraftsManager.shared.drafts.count
    }
    
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        guard let cell = tableView.dequeueReusableCell(withIdentifier: "draftCell", for: indexPath) as? DraftTableViewCell else { fatalError() }
        
        cell.updateUI(for: draft(for: indexPath))
        
        return cell
    }
    
    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        delegate?.draftSelected(draft(for: indexPath))
        dismiss(animated: true)
    }
    
    @objc func cancelPressed() {
        delegate?.draftSelectionCanceled()
        dismiss(animated: true)
    }
    
}