//
//  SDLConfiguration.swift
//  sdlan
//
//  Created by 安礼成 on 2025/7/14.
//
import Foundation
import NIOCore

// 配置项目
public class SDLConfiguration {
    
    public struct StunServer {
        public let host: String
        public let ports: [Int]
        
        public init(host: String, ports: [Int]) {
            self.host = host
            self.ports = ports
        }
    }
    
    public struct NetworkAddress {
        public let networkId: UInt32
        public let ip: UInt32
        public let maskLen: UInt8
        public let mac: Data
        public let networkDomain: String
    }
    
    // 当前的客户端版本
    let version: UInt8
    
    // 安装渠道
    let installedChannel: String
    
    let superHost: String
    let superPort: Int
    
    let stunServers: [StunServer]
    
    let remoteDnsServer: String
    let hostname: String
    
    let noticePort: Int
    
    let networkAddress: NetworkAddress = .init(networkId: 8, ip: 0, maskLen: 24, mac: "xyz".data(using: .utf8)!, networkDomain: "punchnet")
    
    lazy var stunSocketAddress: SocketAddress = {
        let stunServer = stunServers[0]
        return try! SocketAddress.makeAddressResolvingHost(stunServer.host, port: stunServer.ports[0])
    }()
    
    // 网络探测地址信息
    lazy var stunProbeSocketAddressArray: [[SocketAddress]] = {
        return stunServers.map { stunServer in
            [
                try! SocketAddress.makeAddressResolvingHost(stunServer.host, port: stunServer.ports[0]),
                try! SocketAddress.makeAddressResolvingHost(stunServer.host, port: stunServer.ports[1])
            ]
        }
    }()
    
    let clientId: String
    let token: String
    let accessToken: String
    
    public init(version: UInt8, installedChannel: String, superHost: String, superPort: Int, stunServers: [StunServer], clientId: String, noticePort: Int, token: String, accessToken: String, remoteDnsServer: String, hostname: String) {
        self.version = version
        self.installedChannel = installedChannel
        self.superHost = superHost
        self.superPort = superPort
        self.stunServers = stunServers
        self.clientId = clientId
        self.noticePort = noticePort
        self.token = token
        self.accessToken = accessToken
        self.remoteDnsServer = remoteDnsServer
        self.hostname = hostname
    }
    
    // 获取mac地址
    public static func getMacAddress() -> Data {
        let key = "gMacAddress2"
        
        let userDefaults = UserDefaults.standard
        if let mac = userDefaults.value(forKey: key) as? Data {
            return mac
        }
        else {
            let mac = generateMacAddress()
            userDefaults.setValue(mac, forKey: key)
            
            return mac
        }
    }
    
    // 随机生成mac地址
    private static func generateMacAddress() -> Data {
        var macAddress = [UInt8](repeating: 0, count: 6)
        for i in 0..<6 {
            macAddress[i] = UInt8.random(in: 0...255)
        }
        
        return Data(macAddress)
    }
    
}