using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.Net;
using System.Net.Sockets;

namespace NetMonitorServer
{
    class SetNetworks : ActionClass
    {
        private bool setNetworkWins(Queue<string> data)
        {
            if (data.Count != 2)
            {
                this.sendMessage("To less arguments for SetNetworks.setNetworkWins class");
                return false;
            }
            string ip = data.Dequeue();
            string name = data.Dequeue();
            string netsh = "interface ipv4 set winsservers name=\"" + name + (ip == "auto" ? "\" source=dhcp" : "\" static " + ip);
            try
            {
                this.runProgramNetsh(netsh);
            }
            catch (Exception e)
            {
                this.sendMessage(e.Message);
                return false;
            }
            this.sendMessage("true");
            return true;
        }

        private bool setNetworkDns(Queue<string> data)
        {
            if (data.Count != 2)
            {
                this.sendMessage("To less arguments for SetNetworks.setNetworkDns class");
                return false;
            }
            string ip = data.Dequeue();
            string name = data.Dequeue();
            string netsh = "interface ipv4 set dnsservers name=\"" + name + (ip == "auto" ? "\" source=dhcp" : "\" static " + ip + "primary");
            try
            {
                this.runProgramNetsh(netsh);
            }
            catch (Exception e)
            {
                this.sendMessage(e.Message);
                return false;
            }
            this.sendMessage("true");
            return true;
        }

        private bool setNetworkIp(Queue<string> data)
        {
            if (data.Count != 2 && data.Count != 4)
            {
                this.sendMessage("To less arguments for SetNetworks.setNetworkIp class");
                return false;
            }
            string ip = data.Dequeue();
            string netsh = "";
            if (ip == "auto")
            {
                string name = data.Dequeue();
                netsh = "interface ipv4 set address name=\"" + name + "\" source=dhcp";
            }
            else
            {
                string subnet = data.Dequeue();
                string gw = data.Dequeue();
                string name = data.Dequeue();
                netsh = "interface ipv4 set address \"" + name + "\" static " + ip + " " + subnet + " " + gw;
            }
            try
            {
                this.runProgramNetsh(netsh);
            }
            catch (Exception e)
            {
                this.sendMessage(e.Message);
                return false;
            }
            this.sendMessage("true");
            return true;
        }

        private bool setNetworkAuto(Queue<string> data)
        {
            if (data.Count != 1)
            {
                this.sendMessage("To less arguments for SetNetworks.setNetworkDns class");
                return false;
            }
            string name = data.Dequeue();
            try
            {
                this.runProgramNetsh("interface ipv4 set address name=\"" + name + "\" source=dhcp");
                this.runProgramNetsh("interface ipv4 set dnsservers name=\"" + name + "\" source=dhcp");
                this.runProgramNetsh("interface ipv4 set winsservers name=\"" + name + "\" source=dhcp");
            }
            catch (Exception e)
            {
                this.sendMessage(e.Message);
                return false;
            }
            this.sendMessage("true");
            return true;
        }

        private bool runProgramNetsh(string args)
        {
            Process p = new Process();
            p.StartInfo.Arguments = args;
            p.StartInfo.FileName = "netsh";
            p.StartInfo.CreateNoWindow = true;
            p.StartInfo.RedirectStandardOutput = true;
            p.StartInfo.UseShellExecute = false;
            p.Start();
            string output = p.StandardOutput.ReadToEnd();
            p.WaitForExit();
            Console.WriteLine(output.Trim());
            if (p.ExitCode == 0)
            {
                return true;
            }
            throw new Exception(output.Trim());
        }
        internal override bool Run(Queue<string> arguments)
        {
            if (arguments.Count < 2)
            {
                this.sendMessage("To less arguments for SetNetwork class");
                return false;
            }
            switch (arguments.Dequeue().ToLower())
            {
                case "auto": return this.setNetworkAuto(arguments);
                case "ip": return this.setNetworkIp(arguments);
                case "dns": return this.setNetworkDns(arguments);
                case "wins": return this.setNetworkWins(arguments);
                default: this.sendMessage("Wrong arguments for service on SetNetwork class"); return false;
            }
        }
    }
}