//
//  AccountsPreferencesViewController.swift
//  NetNewsWire
//
//  Created by Brent Simmons on 3/17/19.
//  Copyright © 2019 Ranchero Software. All rights reserved.
//

import AppKit
import Account

final class AccountsPreferencesViewController: NSViewController {

	@IBOutlet weak var tableView: NSTableView!
	@IBOutlet weak var detailView: NSView!
	
	private var sortedAccounts = [Account]()

	override func viewDidLoad() {
		super.viewDidLoad()
		NotificationCenter.default.addObserver(self, selector: #selector(displayNameDidChange(_:)), name: .DisplayNameDidChange, object: nil)
	}
	
	override func viewWillAppear() {
		updateSortedAccounts()
		tableView.reloadData()
	}
	
	override func viewWillDisappear() {
		super.viewWillDisappear()
		resetContainerView()
	}
	
	@objc func displayNameDidChange(_ note: Notification) {
		tableView.reloadData()
	}
	
}

// MARK: - NSTableViewDataSource

extension AccountsPreferencesViewController: NSTableViewDataSource {

	func numberOfRows(in tableView: NSTableView) -> Int {
		return sortedAccounts.count
	}

	func tableView(_ tableView: NSTableView, objectValueFor tableColumn: NSTableColumn?, row: Int) -> Any? {
		return sortedAccounts[row]
	}
}

// MARK: - NSTableViewDelegate

extension AccountsPreferencesViewController: NSTableViewDelegate {

	private static let cellIdentifier = NSUserInterfaceItemIdentifier(rawValue: "AccountCell")

	func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
		if let cell = tableView.makeView(withIdentifier: NSUserInterfaceItemIdentifier(rawValue: "Cell"), owner: nil) as? NSTableCellView {
			cell.textField?.stringValue = sortedAccounts[row].nameForDisplay
			return cell
		}
		return nil
	}

	func tableViewSelectionDidChange(_ notification: Notification) {
		
		let selectedRow = tableView.selectedRow
		guard selectedRow != -1 else {
			return
		}
		
		let account = sortedAccounts[selectedRow]
		
		let controller = LocalAccountPreferencesViewController(account: account)
		addChild(controller)
		controller.view.translatesAutoresizingMaskIntoConstraints = false
		detailView.addSubview(controller.view)
		detailView.rs_addFullSizeConstraints(forSubview: controller.view)

	}
	
}

// MARK: - Private

private extension AccountsPreferencesViewController {

	func updateSortedAccounts() {
		sortedAccounts = AccountManager.shared.sortedAccounts
	}
	
	func resetContainerView() {
		if let controller = children.first {
			children.removeAll()
			controller.view.removeFromSuperview()
		}
	}
	
}