//
//  Preferences.swift
//  Tusker
//
//  Created by Shadowfacts on 8/28/18.
//  Copyright © 2018 Shadowfacts. All rights reserved.
//

import Foundation
import Pachyderm

class Preferences: Codable {
    
    private(set) static var shared: Preferences = load()
    
    private static var documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
    private static var archiveURL = Preferences.documentsDirectory.appendingPathComponent("preferences").appendingPathExtension("plist")
    
    static func save() {
        let encoder = PropertyListEncoder()
        let data = try? encoder.encode(shared)
        try? data?.write(to: Preferences.archiveURL, options: .noFileProtection)
    }
    
    static func load() -> Preferences {
        let decoder = PropertyListDecoder()
        if let data = try? Data(contentsOf: Preferences.archiveURL),
            let preferences = try? decoder.decode(Preferences.self, from: data) {
            return preferences
        }
        return Preferences()
    }
    
    private init() {}
    
    // MARK: - Appearance
    var showRepliesInProfiles = false
    var avatarStyle = AvatarStyle.roundRect
    var hideCustomEmojiInUsernames = false
    var tabs: [Tab: Int] = [.home: 0, .notifications: 1, .local: -1, .federated: 2, .myProfile: 3, .preferences: 4]
    
    var defaultPostVisibility = Status.Visibility.public
    
    // MARK: - Advanced
    var silentActions: [String: Permission] = [:]
    
    // MARK: - Utility Methods
    func tabIndex(_ tab: Tab) -> Int {
        if let index = tabs[tab] {
            return index
        } else {
            tabs[tab] = -1
            return -1
        }
    }
    
}

extension Preferences {
    enum Permission: String, Codable {
        case undecided, accepted, rejected
    }
}