using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using OpenQA.Selenium;
using OpenQA.Selenium.Support.UI;
using OpenQA.Selenium.Interactions;
using System.Diagnostics;
using System.Linq;
using OpenQA.Selenium.Chrome;
using Newtonsoft.Json.Linq;
using Newtonsoft.Json;

/*
// The source code was generated by cSharpSeleniumGenerator.js
// Copyright: Tricentis
// Website: https://www.tricentis.com
// C# plugin version: 1.3.4
*/
namespace MyNamespace1
{
  [TestClass]
  public class MyTestCase1
  {
    private IWebDriver _driver;
    private const int MOUSE_LEFT = 0;
    private const int MOUSE_RIGHT = 2;
    private const bool alwaysExecuteActionInLatestWindow = true;

    [TestInitialize]
    public void TestInit()
    {
      _driver = new ChromeDriver();
      _driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(5);
      _driver.Manage().Window.Maximize();
      _driver.Navigate().GoToUrl("https://www.flybuys.co.nz/");
    }

    [TestMethod]
    public void Test()
    {
      Click(null, By.XPath("html/body/div[4]/div[2]/section[1]/div[1]/div/div/div/div[2]/div/div/h3/a"), MOUSE_LEFT,1);
			SendKeys(null, By.Id("autocomplete-0-input"),"umbrella", true, 6);
			Click(null, By.XPath(".//*[@id='autocomplete-0-label']/button"), MOUSE_LEFT,6);
			Click(null, By.XPath(".//*[@id='instant-search-results-container']/div/div/ol/li[1]/div/div/a/div[1]/div[1]/div[1]/img"), MOUSE_LEFT,8);
			SelectItemByVisibleText(null, By.Id("attribute234"), 6, "Choose an Option..." );
			SelectItemByVisibleText(null, By.Id("attribute234"), 6, "Mint" );
			Click(null, By.XPath("html"), MOUSE_LEFT,5);
			Click(null, By.XPath(".//*[@id='product-addtocart-button']/span"), MOUSE_LEFT,3);
    }
		
		/// <summary>
		/// Switches to an iframe.
		/// </summary>
		/// <param name="framesJson">
		/// The json frames. ex: [{"value":"child2","type":"id_or_name"}]
		/// "type" should be "id or value" or "index"
		/// </param>
		private void SwitchToFrames(string framesJson)
		{
		  try
		  {
		    _driver.SwitchTo().DefaultContent();
		    var array = JsonConvert.DeserializeObject<JArray>(framesJson);
		    var children = array.Children<JObject>();
		    foreach (var obj in children)
		    {
		      var type = obj.GetValue("type").ToString();
		      var value = obj.GetValue("value").ToString();
		      // switch to desired frame/iframe
		      if (type.ToLower() == "index")
		      {
		        _driver.SwitchTo().Frame(int.Parse(value));
		      }
		      else
		      {
		        _driver.SwitchTo().Frame(value);
		      }
		    }
		  }
		  catch
		  {
		    throw;
		  }
		}
		

    /// <summary>
    /// Sends the keys to the UI element
    /// </summary>
    /// <param name="locator">The element locator</param>
    /// <param name="keys">The keys to send to the element
    /// <param name="clearTextBeforeSendingKeys">if true, clear the text field before sending keys to it, otherwise, false
    /// <param name="timeOutInSeconds">The time out, in seconds, to find element</param>
    public void SendKeys(String frames, By locator, string keys, bool clearTextBeforeSendingKeys, int timeOutInSeconds)
    {
      if (alwaysExecuteActionInLatestWindow) SwitchToLastWindow(frames);
      IWebElement elm = FindElement(locator, timeOutInSeconds);
      if (clearTextBeforeSendingKeys) elm.Clear();
      elm.SendKeys(keys);
    }

    /// <summary>
    /// Clicks the specified UI element.
    /// </summary>
    /// <param name="locator">The element locator.</param>
    /// <param name="mouseButton">The mouse button, e.g. MOUSE_LEFT, MOUSE_RIGHT.</param>
    /// <param name="timeoutInSeconds">The timeout in seconds.</param>
    public void Click(String frames, By locator, int mouseButton, int timeoutInSeconds)
    {
      Click(frames, locator, mouseButton, null, timeoutInSeconds);
    }

    /// <summary>
    /// Clicks on the specified UI element.
    /// </summary>
    /// <param name="locator">The element locator.</param>
    /// <param name="mouseButton">The mouse button.</param>
    /// <param name="modifierKeys">The modifier keys.</param>
    /// <param name="timeoutInSeconds">The timeout in seconds.</param>
    /// <exception cref="NoSuchElementException">Element not found.</exception>
    /// <exception cref="Exception">Failed to click on the element</exception>
    public void Click(String frames, By locator, int mouseButton, string modifierKeys, int timeoutInSeconds)
    {
      if (alwaysExecuteActionInLatestWindow) SwitchToLastWindow(frames);
      bool success = false;
      long timeoutInMillies = timeoutInSeconds * 1000;
      IWebElement elm = null;
      // time spent counters
      long timeSpentInMillis = 0;
      // try to click on the element until wait timout reached
      while ((success == false) && (timeSpentInMillis <= timeoutInMillies))
      {
        try
        {
          Stopwatch stopWatch = Stopwatch.StartNew();
          // find the element and calculate time spent
          elm = FindElement(locator, 1);
          stopWatch.Stop();
          timeSpentInMillis += stopWatch.ElapsedMilliseconds;
          if (elm != null)
          {   
            PerformClick(elm, mouseButton, modifierKeys);
            // successfully clicked on element, turn on the flag to escape the loop
            success = true;
          }
        }
        catch (Exception e)
        {
          // probably the element is not present yet or it is non-clickable
          Console.WriteLine(e.Message);
          // if element is found and we reached to the timeout, try to click on it with JavaScript
          if ((elm != null) && (timeSpentInMillis > timeoutInMillies))
          {
            IJavaScriptExecutor js = (IJavaScriptExecutor)this._driver;
            js.ExecuteScript("arguments[0].click();", elm);
            // successfully clicked on element, turn on the flag to escape the loop
            success = true;
          }
        }
      }

      if (!success)
      {
        if (elm == null)
        {
          throw new NoSuchElementException("Element not found.");
        }
        else
        {
          throw new Exception("Failed to click on the element");
        }
      }
    }    

    private void PerformClick(IWebElement element, int mouseButton, string modifierKeys)
    {
      modifierKeys = modifierKeys ?? string.Empty;
      if (string.IsNullOrEmpty(modifierKeys) && (mouseButton == MOUSE_LEFT))
      {
        element.Click();
        return;  
      }
      
      var actions = new Actions(_driver);
      if (modifierKeys.IndexOf("Ctrl") > -1)
      {
        actions = actions.KeyDown(Keys.Control);
      }

      if (modifierKeys.IndexOf("Alt") > -1)
      {
        actions = actions.KeyDown(Keys.Alt);
      }

      if (modifierKeys.IndexOf("Shift") > -1)
      {
        actions = actions.KeyDown(Keys.Shift);
      }

      if (mouseButton == MOUSE_LEFT)
      {
        actions = actions.Click(element);
      }
      else
      {
        actions = actions.ContextClick(element);
      }

      if (modifierKeys.IndexOf("Ctrl") > -1)
      {
        actions = actions.KeyUp(Keys.Control);
      }

      if (modifierKeys.IndexOf("Alt") > -1)
      {
        actions = actions.KeyUp(Keys.Alt);
      }

      if (modifierKeys.IndexOf("Shift") > -1)
      {
          actions = actions.KeyUp(Keys.Shift);
      }
      actions.Perform();
    }

    /// <summary>
    /// Finds the element by a locator
    /// </summary>
    /// <param name="locator">The element locator.</param>
    /// <param name="waitForElementTimeoutInSeconds">The timeout, in seconds, to wait for element.</param>
    /// <returns></returns>
    private IWebElement FindElement(By locator, int waitForElementTimeoutInSeconds)
    {
      while (true)
      {
        try
        {
          WebDriverWait wait = new WebDriverWait(_driver, TimeSpan.FromSeconds(waitForElementTimeoutInSeconds));
          return wait.Until(SeleniumExtras.WaitHelpers.ExpectedConditions.ElementToBeClickable(locator));
        }
        catch (WebDriverTimeoutException)
        {
          // sometimes WebDriverWait falied to find elements, e.g. Dojo checkboxs, and we need to fall back to use WebDriver itself
          return _driver.FindElement(locator);
        }
        catch (UnhandledAlertException)
        {
          // Alert dialog is about to be closed, wait a moment and retry
          System.Threading.Thread.Sleep(500);
        }
      }
    }    

    /// <summary>
    /// Select an option in a select element
    /// </summary>
    /// <param name="frames">frame list, where select tag belong to</param>
    /// <param name="selectElementLocator">locator of select element</param>
    /// <param name="waitForElementTimeout">wait time out</param>
    /// <param name="text">text to select</param>
    public void SelectItemByVisibleText(String frames, By selectElementLocator, int waitForElementTimeout,  String text)
    {
      if (alwaysExecuteActionInLatestWindow) SwitchToLastWindow(frames);
      SelectElement sel = new SelectElement(FindElement(selectElementLocator, waitForElementTimeout));
      sel.SelectByText(text);
    }

    /// <summary>
    /// Switch to lastest window and frames
    /// </summary>
    /// <param name="frameList">List of frame to switch or null</param>
    private void SwitchToLastWindow(String frameList)
    {
      _driver.SwitchTo().Window(_driver.WindowHandles.Last()); 
      if (null != frameList) SwitchToFrames(frameList);
    }

    [TestCleanup]
    public void TestCleanup()
    {
      _driver.Close();
      _driver.Quit();
    }
  }
}