//
//  Preferences.swift
//  TagTunes
//
//  Created by Kim Wittenburg on 29.08.15.
//  Copyright © 2015 Kim Wittenburg. All rights reserved.
//

import Cocoa

/// A custom interface for the `NSUserDefaults`. It is recommended to use this
/// class insted of accessing the user defaults directly to prevent errors due
/// to misspelled strings.
///
/// All properties in this class are KCO compliant.
@objc public class Preferences: NSObject {

    public static var sharedPreferences = Preferences()
    
    /// Initializes the default preferences. This method must be called the very
    /// first time the application is launched. It is perfectly valid to call
    /// this method every time the application launches. Existing values are not
    /// overridden.
    public func initializeDefaultValues() {
        let initialArtworkFolder = NSURL.fileURLWithPath(NSHomeDirectory(), isDirectory: true)
        NSUserDefaults.standardUserDefaults().registerDefaults([
            "Save Artwork": false,
            "Keep Search Results": false,
            "Remove Saved Albums": false])
        if NSUserDefaults.standardUserDefaults().URLForKey("Artwork Target") == nil {
            NSUserDefaults.standardUserDefaults().setURL(initialArtworkFolder, forKey: "Artwork Target")
        }
    }
    
    /// If `true` the album artwork should be saved to the `artworkTarget` URL
    /// when an item is saved.
    public dynamic var saveArtwork: Bool {
        set {
            NSUserDefaults.standardUserDefaults().setBool(newValue, forKey: "Save Artwork")
        }
        get {
            return NSUserDefaults.standardUserDefaults().boolForKey("Save Artwork")
        }
    }
    
    /// The URL of the folder album artwork is saved to.
    ///
    /// The URL must be a valid file URL pointing to a directory.
    public dynamic var artworkTarget: NSURL {
        set {
            NSUserDefaults.standardUserDefaults().setURL(newValue, forKey: "Artwork Target")
        }
        get {
            return NSUserDefaults.standardUserDefaults().URLForKey("Artwork Target")!
        }
    }
    
    /// If `true` the search results are not removed from the main outline view
    /// when the user selects a result.
    public dynamic var keepSearchResults: Bool {
        set {
            NSUserDefaults.standardUserDefaults().setBool(newValue, forKey: "Keep Search Results")
        }
        get {
            return NSUserDefaults.standardUserDefaults().boolForKey("Keep Search Results")
        }
    }

}