SharePoint solution auto-retract using Selenium(C#)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Administration;
using System.IO;
using OpenQA.Selenium;
using OpenQA.Selenium.IE;
using OpenQA.Selenium.Support;
using OpenQA.Selenium.Support.UI;
using Selenium;
using System.Net;
using System.Runtime.InteropServices;
using System.Globalization;

namespace SharePoint_Solution_Auto_Deploy
{
    public partial class MainForm : Form
    {
        //To make the GetForegroundWindow possible.
        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
        public static extern IntPtr GetForegroundWindow();
        //Form entry.
        public MainForm()
        {
            InitializeComponent();
            getSPWebApps(); 
        }
        //Add web apps to the combobox.
        private void getSPWebApps()
        {
            try
            {
                SPSecurity.RunWithElevatedPrivileges(() =>
                {
                    foreach (SPWebApplication webApp in SPWebService.ContentService.WebApplications)
                    {
                        WebAppComBox.Items.Add(webApp.Name);
                    }
                });
            }
            catch (Exception ex)
            {
                WriteLog(ex);
            }
        }
        //Web application.
        private void WebAppsComBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            WebAppComBox.Text = WebAppComBox.SelectedItem.ToString();
            SPWebApplicationCollection webApps = SPWebService.ContentService.WebApplications;
            SPWebApplication webApp = webApps[WebAppComBox.Text];
            getSPSites(webApp);
        }
        //Site.
        private void getSPSites(SPWebApplication webApp)
        {
            SPSiteCollection sites = webApp.Sites;
            //Clear old items from the combox first and then add the new items into it.
            SiteComBox.Items.Clear();
            foreach (SPSite site in sites)
            {
                SiteComBox.Items.Add(site.Url.ToString());
            }
        }
        //Write log method.
        private static void WriteLog(Exception ex)
        {
            string logUrl = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory) + "\\SeleniumAutoTest.txt";
            if (File.Exists(@logUrl))
            {
                using (FileStream fs = new FileStream(logUrl, FileMode.Append))
                {
                    using (StreamWriter sw = new StreamWriter(fs, Encoding.Default))
                    {
                        try
                        {
                            sw.Write(ex);
                        }
                        catch (Exception ex1)
                        {
                            WriteLog(ex1);
                        }
                        finally
                        {
                            sw.Close();
                            fs.Close();
                        }
                    }
                }
            }
            else
            {
                using (FileStream fs = new FileStream(logUrl, FileMode.CreateNew))
                {
                    using (StreamWriter sw = new StreamWriter(fs, Encoding.Default))
                    {
                        try
                        {
                            sw.Write(ex);
                        }
                        catch (Exception ex1)
                        {
                            WriteLog(ex1);
                        }
                        finally
                        {
                            sw.Close();
                            fs.Close();
                        }
                    }
                }
            }
        }
        //Select the wsp file action.
        private void select_wsp_button_Click(object sender, EventArgs e)
        {
            OpenFileDialog wspFile = new OpenFileDialog();
            if (wspFile.ShowDialog() == DialogResult.OK) 
            {
                WspText.Text = wspFile.FileName;
            }
        }
        //Retract and deploy action.
        private void ok_button_Click(object sender, EventArgs e)
        {
            //1.Login site and deactive the feature.
            IWebDriver iw = new InternetExplorerDriver();
            iw = login(iw, SiteComBox.Text.ToString(), UserNameText.Text.ToString(), PwdText.Text.ToString());
            INavigation navi = iw.Navigate();
            //Go to the site collection features page.
            navi.GoToUrl(SiteComBox.Text.ToString() + "/_layouts/15/ManageFeatures.aspx?Scope=Site");
            //Judge the feature category by the name wsp file selected.
            string category;
            var wspPath = WspText.Text.ToString().Split(new Char[] { ‘\\‘ });
            category = wspPath[wspPath.Count() - 1];
            //MessageBox.Show(category.ToString());
            //Deactive the feature.
            deactivateFeature(iw, category);
            //2.If has solution, retract first.
            string solutionPageUrl = "http://wdsinpexca:10000/_admin/Solutions.aspx";
            navi.GoToUrl(solutionPageUrl);
            iw.FindElement(By.LinkText(category.ToLower())).Click();
            waitUntilPageLoaded(iw, "ctl00_PlaceHolderMain_solutionStatusToolBar_RptControls_LinkRetractSolution_LinkText");
            iw.FindElement(By.Id("ctl00_PlaceHolderMain_solutionStatusToolBar_RptControls_LinkRetractSolution_LinkText")).Click();
            waitUntilPageLoaded(iw, "ctl00_PlaceHolderMain_ctl02_RptControls_BtnSubmit");
            iw.FindElement(By.Id("ctl00_PlaceHolderMain_ctl02_RptControls_BtnSubmit")).Click();

            //During the retracting period, there will be a down. Let‘s sleep to get over it.
            //Thread.Sleep(300000);
            //Back to the wsp page.
            iw.FindElement(By.LinkText(category.ToLower())).Click();
            iw.Navigate().Refresh();
            //Wait for the solution retracted.
            //waitUntilPageLoaded(iw, "ctl00_PlaceHolderMain_solutionStatusToolBar_RptControls_LinkRemoveSolution_LinkText");
            //iw.FindElement(By.Id("ctl00_PlaceHolderMain_solutionStatusToolBar_RptControls_LinkRemoveSolution_LinkText")).Click();
            //Click OK in the popup window.
            //IntPtr myPtr = GetForegroundWindow();
            //if (myPtr != IntPtr.Zero)
            //{
            //    System.Windows.Forms.SendKeys.SendWait("{ENTER}");
            //}
            //3.Deploy the solution to the web app.

            //4.Active the site wsp feature.


        }
        //Deactive the feature accourding to the wsp solution category.
        private void deactivateFeature(IWebDriver iw,string category)
        {
            if (category == "APPSSP2013MISite.wsp")
            {
                //Deactive the MISITE feature.
                waitUntilPageLoaded(iw, "ctl00_PlaceHolderMain_featact_rptrFeatureList_ctl21_ctl00_divFeatureStatus");
                string featureStatus = iw.FindElement(By.Id("ctl00_PlaceHolderMain_featact_rptrFeatureList_ctl21_ctl00_divFeatureStatus")).GetAttribute("featurestatus").ToString();
                if (featureStatus == "Active")
                {
                    waitUntilPageLoaded(iw, "ctl00_PlaceHolderMain_featact_rptrFeatureList_ctl21_ctl00_btnActivate");
                    iw.FindElement(By.Id("ctl00_PlaceHolderMain_featact_rptrFeatureList_ctl21_ctl00_btnActivate")).Click();
                    waitUntilPageLoaded(iw, "ctl00_PlaceHolderMain_lnkbtnDeactivate");
                    iw.FindElement(By.Id("ctl00_PlaceHolderMain_lnkbtnDeactivate")).Click();
                }
            }
            //Other solutions can be extended here.
        }
        //Wait until page-element loaded method.
        private static void waitUntilPageLoaded(IWebDriver iw, string element)
        {
            try
            {
                iw.FindElement(By.Id(element));
            }
            catch (Exception ex)
            {
                WriteLog(ex);
                //Refresh the current page.
                //iw.Navigate().Refresh();
                Thread.Sleep(1000);
                waitUntilPageLoaded(iw, element);
            }
        }
        //Login SP site method.
        public static IWebDriver login(IWebDriver driver, string url,string userName,string pwd)
        {
            INavigation navigation = driver.Navigate();
            navigation.GoToUrl(url);
            //driver.FindElement(By.Id("overridelink")).Click();
            IntPtr myPtr = GetForegroundWindow();
            //IntPtr hWnd = FindWindow(null, "abc");
            if (myPtr != IntPtr.Zero)
            {
                //Send message to the window.
                System.Windows.Forms.SendKeys.SendWait(userName);
                System.Windows.Forms.SendKeys.SendWait("{TAB}");
                System.Windows.Forms.SendKeys.SendWait(pwd);
                System.Windows.Forms.SendKeys.SendWait("{ENTER}");
            }
            return driver;
        }
    }
}