ClashX.Meta/ClashX/General/ConfigManager.swift

//
//  ConfigManager.swift
//  ClashX
//
//  Created by CYC on 2018/6/12.
//  Copyright © 2018年 yichengchen. All rights reserved.
//

import Foundation
import Cocoa
import RxSwift
import Yams

class ConfigManager {
    
    static let shared = ConfigManager()
    private let disposeBag = DisposeBag()
    var apiPort = "8080"
    private init(){
        refreshApiPort()
        setupNetworkNotifier()
    }
    
    var currentConfig:ClashConfig?{
        get {
            return currentConfigVariable.value
        }
        
        set {
            currentConfigVariable.value = newValue
        }
    }
    var currentConfigVariable = Variable<ClashConfig?>(nil)
    
    var proxyPortAutoSet:Bool {
        get{
            return UserDefaults.standard.bool(forKey: "proxyPortAutoSet")
        }
        set {
            UserDefaults.standard.set(newValue, forKey: "proxyPortAutoSet")
        }
    }
    let proxyPortAutoSetObservable = UserDefaults.standard.rx.observe(Bool.self, "proxyPortAutoSet")
    
    var showNetSpeedIndicator:Bool {
        get{
            return UserDefaults.standard.bool(forKey: "showNetSpeedIndicator")
        }
        set {
            UserDefaults.standard.set(newValue, forKey: "showNetSpeedIndicator")
        }
    }
    let showNetSpeedIndicatorObservable = UserDefaults.standard.rx.observe(Bool.self, "showNetSpeedIndicator")
    
    static var apiUrl:String{
        get {
            return "http://127.0.0.1:\(shared.apiPort)"
        }
    }
    
    static var selectedProxyMap:[String:String] {
        get{
            let map = UserDefaults.standard.dictionary(forKey: "selectedProxyMap") as? [String:String] ?? ["Proxy":"ProxyAuto"]
            return map.count == 0 ? ["Proxy":"ProxyAuto"] : map
        }
        set {
            UserDefaults.standard.set(newValue, forKey: "selectedProxyMap")
        }
    }
    
    static var selectOutBoundMode:ClashProxyMode {
        get{
            return ClashProxyMode(rawValue: UserDefaults.standard.string(forKey: "selectOutBoundMode") ?? "") ?? .rule
        }
        set {
            UserDefaults.standard.set(newValue.rawValue, forKey: "selectOutBoundMode")
        }
    }
    
    static var allowConnectFromLan:Bool {
        get{
            return UserDefaults.standard.bool(forKey: "allowConnectFromLan")
        }
        set {
            UserDefaults.standard.set(newValue, forKey: "allowConnectFromLan")
        }
    }
    
    static var selectLoggingApiLevel:ClashLogLevel {
        get{
            return ClashLogLevel(rawValue: UserDefaults.standard.string(forKey: "selectLoggingApiLevel") ?? "") ?? .info
        }
        set {
            UserDefaults.standard.set(newValue.rawValue, forKey: "selectLoggingApiLevel")
        }
    }
    
    func refreshApiPort(){
        apiPort = "7892"
        if let yamlStr = try? String(contentsOfFile: kConfigFilePath),
            var yaml = (try? Yams.load(yaml: yamlStr)) as? [String:Any] {
            if let controller = yaml["external-controller"] as? String,
                let port = controller.split(separator: ":").last{
                apiPort = String(port)
            } else {
                yaml["external-controller"] = apiPort
                ConfigFileFactory.saveToClashConfigFile(config: yaml)
            }
        } else {
            _ = ConfigFileFactory.replaceConfigWithSampleConfig()
        }
    }
    
    func setupNetworkNotifier() {
        NetworkChangeNotifier.start()
        NotificationCenter
            .default
            .rx
            .notification(kSystemNetworkStatusDidChange)
            .debounce(2, scheduler: MainScheduler.instance)
            .subscribeOn(MainScheduler.instance)
            .bind{ _ in
            let (http,https,socks) = NetworkChangeNotifier.currentSystemProxySetting()
            let proxySetted =
                http == (self.currentConfig?.port ?? 0) &&
                https == (self.currentConfig?.port ?? 0) &&
                socks == (self.currentConfig?.socketPort ?? 0)
            self.proxyPortAutoSet = proxySetted
        }.disposed(by: disposeBag)
    }
}