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

import Foundation
import Pachyderm
import Combine

class Preferences: Codable, ObservableObject {

    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: archiveURL, options: .noFileProtection)
    }
    
    static func load() -> Preferences {
        let decoder = PropertyListDecoder()
        if let data = try? Data(contentsOf: archiveURL),
            let preferences = try? decoder.decode(Preferences.self, from: data) {
            return preferences
        }
        return Preferences()
    }
    
    private init() {}
    
    required init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        
        self.showRepliesInProfiles = try container.decode(Bool.self, forKey: .showRepliesInProfiles)
        self.avatarStyle = try container.decode(AvatarStyle.self, forKey: .avatarStyle)
        self.hideCustomEmojiInUsernames = try container.decode(Bool.self, forKey: .hideCustomEmojiInUsernames)
        
        self.defaultPostVisibility = try container.decode(Status.Visibility.self, forKey: .defaultPostVisibility)
        self.automaticallySaveDrafts = try container.decode(Bool.self, forKey: .automaticallySaveDrafts)
        self.contentWarningCopyMode = try container.decode(ContentWarningCopyMode.self, forKey: .contentWarningCopyMode)
        self.blurAllMedia = try container.decode(Bool.self, forKey: .blurAllMedia)
        self.openLinksInApps = try container.decode(Bool.self, forKey: .openLinksInApps)
        self.useInAppSafari = try container.decode(Bool.self, forKey: .useInAppSafari)
        self.inAppSafariAutomaticReaderMode = try container.decode(Bool.self, forKey: .inAppSafariAutomaticReaderMode)
        
        self.showFavoriteAndReblogCounts = try container.decode(Bool.self, forKey: .showFavoriteAndReblogCounts)
        self.defaultNotificationsMode = try container.decode(NotificationsMode.self, forKey: .defaultNotificationsType)
        
        self.silentActions = try container.decode([String: Permission].self, forKey: .silentActions)
        self.statusContentType = try container.decode(StatusContentType.self, forKey: .statusContentType)
    }
    
    func encode(to encoder: Encoder) throws {
        var container = encoder.container(keyedBy: CodingKeys.self)
        
        try container.encode(showRepliesInProfiles, forKey: .showRepliesInProfiles)
        try container.encode(avatarStyle, forKey: .avatarStyle)
        try container.encode(hideCustomEmojiInUsernames, forKey: .hideCustomEmojiInUsernames)
        
        try container.encode(defaultPostVisibility, forKey: .defaultPostVisibility)
        try container.encode(automaticallySaveDrafts, forKey: .automaticallySaveDrafts)
        try container.encode(contentWarningCopyMode, forKey: .contentWarningCopyMode)
        try container.encode(blurAllMedia, forKey: .blurAllMedia)
        try container.encode(openLinksInApps, forKey: .openLinksInApps)
        try container.encode(useInAppSafari, forKey: .useInAppSafari)
        try container.encode(inAppSafariAutomaticReaderMode, forKey: .inAppSafariAutomaticReaderMode)
        
        try container.encode(showFavoriteAndReblogCounts, forKey: .showFavoriteAndReblogCounts)
        try container.encode(defaultNotificationsMode, forKey: .defaultNotificationsType)
        
        try container.encode(silentActions, forKey: .silentActions)
        try container.encode(statusContentType, forKey: .statusContentType)
    }
    
    // MARK: - Appearance
    @Published var showRepliesInProfiles = false
    @Published var avatarStyle = AvatarStyle.roundRect
    @Published var hideCustomEmojiInUsernames = false
    
    // MARK: - Behavior
    @Published var defaultPostVisibility = Status.Visibility.public
    @Published var automaticallySaveDrafts = true
    @Published var contentWarningCopyMode = ContentWarningCopyMode.asIs
    @Published var blurAllMedia = false
    @Published var openLinksInApps = true
    @Published var useInAppSafari = true
    @Published var inAppSafariAutomaticReaderMode = false
    
    // MARK: - Digital Wellness
    @Published var showFavoriteAndReblogCounts = true
    @Published var defaultNotificationsMode = NotificationsMode.allNotifications
    
    // MARK: - Advanced
    @Published var silentActions: [String: Permission] = [:]
    @Published var statusContentType: StatusContentType = .plain

    enum CodingKeys: String, CodingKey {
        case showRepliesInProfiles
        case avatarStyle
        case hideCustomEmojiInUsernames
        
        case defaultPostVisibility
        case automaticallySaveDrafts
        case contentWarningCopyMode
        case blurAllMedia
        case openLinksInApps
        case useInAppSafari
        case inAppSafariAutomaticReaderMode
        
        case showFavoriteAndReblogCounts
        case defaultNotificationsType
        
        case silentActions
        case statusContentType
    }
    
}

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