using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Configuration;
using System.ServiceModel.Configuration;
using System.Text.RegularExpressions;
using QMAPP.WinForm.Common;

namespace QMAPP.WinForm
{
    public partial class ServerSwitch : Form
    {
        const string _AddrRegex = "(?<=//)\\S+(?=:)";

        public ServerSwitch()
        {
            InitializeComponent();
        }

        private void ServerSwitch_Load(object sender, EventArgs e)
        {
            cbServer.DataSource= ConfigurationManager.AppSettings["ServerHosts"].Split('|');
            //cbServer.Items.Add("10.123.4.15");
            //cbServer.Items.Add("10.123.4.15");
            LoadServiceHost();
        }

        private void LoadServiceHost()
        {
            Configuration cfg = ConfigurationManager.OpenExeConfiguration("");
            var clientSecion = cfg.GetSection("system.serviceModel/client") as ClientSection;

            txtWCFUrl.Text = GetEndointByName(clientSecion, "BasicHttpBinding_IGeneralService").Address.Host;
            txtOPCUrl.Text = GetEndointByName(clientSecion, "NetTcpBinding_IOpcService").Address.Host;
        }
        private ChannelEndpointElement GetEndointByName(ClientSection section, string endpointname)
        {
            foreach (ChannelEndpointElement endpoint in section.Endpoints)
            {
                if (string.Equals(endpoint.Name, endpointname))
                {
                    return endpoint;
                }
            }
            return null;
        }

        private string GetServerFromURL(string url)
        {
            var servermatch= System.Text.RegularExpressions.Regex.Match(url, _AddrRegex);
            if (servermatch != null&&servermatch.Success)
            {
                return servermatch.Value;
            }
            return "";
        }

        private void btnSwitchSave_Click(object sender, EventArgs e)
        {
            Configuration cfg = ConfigurationManager.OpenExeConfiguration("");
            var clientSecion = cfg.GetSection("system.serviceModel/client") as ClientSection;
            if (cbChangeWCF.Checked)
            {
                ReplaceServerHost(clientSecion, "BasicHttpBinding_IGeneralService");
                ReplaceServerHost(clientSecion, "BasicHttpBinding_ILoginService");
            }
            if (cbChangeOPC.Checked)
            {
                ReplaceServerHost(clientSecion, "NetTcpBinding_IOpcService");
            }
            cfg.Save(ConfigurationSaveMode.Modified, false);
            this.Close();
        }

        private void ReplaceServerHost(ClientSection clientSecion,string endpointname)
        {
            var endpoint = GetEndointByName(clientSecion, endpointname);
            string url = Regex.Replace(endpoint.Address.ToString(), _AddrRegex, cbServer.Text);
            endpoint.Address = new Uri(url);
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}