using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Net;
using System.Threading;
using System.Windows.Forms;
using Microsoft.Build.Exceptions;
using Microsoft.Build.Execution;
using Microsoft.Build.Framework;
using SharpSvn;

namespace SvnForm {
  public partial class SvnMain : Form {
    SvnClient client = new SvnClient();
    Semaphore trunkStatus = new Semaphore(0, 1);
    Semaphore branchStatus = new Semaphore(0, 1);
    Semaphore handle = new Semaphore(0, 1);
    private bool buildAborted = false;
    private Thread builder;
    private Thread build;

    public SvnMain() {
      InitializeComponent();
    }

    #region event handlers
    private void SvnMain_Load(object sender, EventArgs e) {
      tbxUrl.Text = "http://dev.heuristiclab.com/svn/hl/core/";
      tbxBranches.Text = "http://dev.heuristiclab.com/svn/hl/core/branches/";
      tbxDir.Text = @"c:\dir";
      gbxLogin.Hide();
      lblSolutions.Text = "Which Solution" + Environment.NewLine + "to be build";
      tbxPwd.Text = "";
      tbxUsername.Text = "";
      lbxConfiguration.SelectedIndex = 0;
      lbxPlatform.SelectedIndex = 0;
      lbxBranches.SelectionMode = SelectionMode.MultiSimple;
      LoadTreeView();
      tabSvn.TabPages.Remove(tabProcess);
      tabSvn.TabPages.Remove(tabBuild);
    }

    private void btnLoad_Click(object sender, EventArgs e) {
      try {
        lbxBranches.Items.Clear();
        string branchUrl = tbxBranches.Text;
        string uri = tbxUrl.Text;
        Collection<SvnListEventArgs> contents;
        if (client.GetList(new Uri(branchUrl), out contents)) {
          foreach (SvnListEventArgs item in contents.Skip(1)) {
            //add from the Uri to listbox
            lbxBranches.Items.Add(item.Path);
          }
        }
      }
      catch {
        lbxBranches.Items.Add("The Url is not correct or Authentication needed to acces this Url");
      }
    }

    private void btnDown_Click(object sender, EventArgs e) {
      if (lbxSolutions.SelectedIndex < lbxSolutions.Items.Count - 1) {
        String Temp = lbxSolutions.Items[lbxSolutions.SelectedIndex].ToString();
        lbxSolutions.Items[lbxSolutions.SelectedIndex] = lbxSolutions.Items[lbxSolutions.SelectedIndex + 1];
        lbxSolutions.Items[lbxSolutions.SelectedIndex + 1] = Temp;
        lbxSolutions.SelectedIndex++; // folow up by placing the selection again
      }
    }

    private void btnUp_Click(object sender, EventArgs e) {
      if (lbxSolutions.SelectedIndex > 0) {
        String Temp = lbxSolutions.Items[lbxSolutions.SelectedIndex].ToString();
        lbxSolutions.Items[lbxSolutions.SelectedIndex] = lbxSolutions.Items[lbxSolutions.SelectedIndex - 1];
        lbxSolutions.Items[lbxSolutions.SelectedIndex - 1] = Temp;
        lbxSolutions.SelectedIndex--; // folow up by placing the selection again
      }
    }

    private void btnBrowse_Click(object sender, EventArgs e) {
      if (folderBrowserDialog1.ShowDialog() == DialogResult.OK) {
        this.tbxDir.Text = folderBrowserDialog1.SelectedPath;
      }
    }

    private void btnFinish_Click(object sender, EventArgs e) {
      Application.Exit();
    }

    private void btnNext_Click(object sender, EventArgs e) {
      tabSvn.TabPages.Remove(tabSvn.SelectedTab);
      tabSvn.TabPages.Add(tabProcess);
      Thread svn = new Thread(SvnTasks);
      svn.Start();
      btnNext2.Enabled = false;
      Thread endSvn = new Thread(EndSvn);
      endSvn.Start();

    }

    private void btnRefresh_Click(object sender, EventArgs e) {
      LoadTreeView();
    }

    private void cbxAuthenticate_CheckedChanged(object sender, EventArgs e) {
      if (cbxAuthenticate.Checked) {
        gbxLogin.Show();
      } else {
        gbxLogin.Hide();
      }
    }

    private void trvBranches_AfterSelect(object sender, TreeViewEventArgs e) {
      string uri = tbxUrl.Text;
      if ((uri.Substring(uri.Length - Math.Min(1, uri.Length)) == "/")) {        //to avoid double "//" i.e "http://xyz.com/files//abc//" on the Url
        uri = uri.Remove(uri.Length - 1);                                        //e.g. dev.heuristiclab.com/svn/hl/core//branches/ 
      }
      string val = trvBranches.SelectedNode.Text;
      if (trvBranches.SelectedNode.Parent == null) {
        tbxBranches.Text = uri + "/" + val + "/";
      } else {
        string par = trvBranches.SelectedNode.Parent.Text;
        tbxBranches.Text = uri + "/" + par + "/" + val + "/";
      }
    }

    private void trvSolution_AfterCheck(object sender, TreeViewEventArgs e) {
      if (e.Action != TreeViewAction.Unknown) {
        if (e.Node.Nodes.Count > 0) {
          /* Calls the CheckAllChildNodes method, passing in the current 
          Checked value of the TreeNode whose checked state changed. */
          this.CheckAllChildNodes(e.Node, e.Node.Checked);
        }
      }
      if (e.Node.Parent != null) {
        if (e.Node.Checked) {
          if (!lbxSolutions.Items.Contains(e.Node.Text)) {
            lbxSolutions.Items.Add(e.Node.Text);
          }
        } else {
          if (lbxSolutions.Items.Contains(e.Node.Text)) {
            lbxSolutions.Items.Remove(e.Node.Text);
          }
        }
      }
      if (lbxSolutions.Items.Count > 0) {
        btnNext2.Enabled = true;
      }
    }

    private void btnBack_Click(object sender, EventArgs e) {
      tabSvn.TabPages.Add(tabMain);
      tabSvn.TabPages.Remove(tabSvn.SelectedTab);
    }

    private void btnNext2_Click(object sender, EventArgs e) {
      buildLogTextBox.Clear();
      tabSvn.TabPages.Add(tabBuild);
      tabSvn.TabPages.Remove(tabSvn.SelectedTab);
      build = new Thread(BuildAll);
      build.Start();
      ShowProgressBar();
      DisableButton();
    }

    private void btnBack2_Click(object sender, EventArgs e) {
      tabSvn.TabPages.Add(tabProcess);
      tabSvn.TabPages.Remove(tabSvn.SelectedTab);
      BuildManager.DefaultBuildManager.CancelAllSubmissions();
    }

    private void btnCancel_Click(object sender, EventArgs e) {
      Application.Exit();
    }

    #endregion

    #region Invoke
    private void ShowProgressBar() {
      if (InvokeRequired) {
        MethodInvoker AssignMethodToControl = new MethodInvoker(ShowProgressBar);
        prbSvn.Invoke(AssignMethodToControl);
        prbBuild.Invoke(AssignMethodToControl);
      } else {
        prbSvn.Show();
        prbBuild.Show();
        prbSvn.Style = ProgressBarStyle.Marquee;
        prbBuild.Style = ProgressBarStyle.Marquee;
      }
    }

    private void HideProgressBar() {
      if (InvokeRequired) {
        MethodInvoker AssignMethodToControl = new MethodInvoker(HideProgressBar);
        prbSvn.Invoke(AssignMethodToControl);
      } else {
        prbSvn.Hide();
      }
    }

    private void HidePrbBuild() {
      if (InvokeRequired) {
        MethodInvoker AssignMethodToControl = new MethodInvoker(HidePrbBuild);
        prbBuild.Invoke(AssignMethodToControl);
      } else {
        prbBuild.Hide();
      }
    }

    private void UpdatelblStatus(string message) {
      if (lblStatus.InvokeRequired) {
        lblStatus.Invoke(new Action<string>(UpdatelblStatus), message);
      } else {
        lblStatus.Text = message;
      }
    }

    private void UpdateBuildSln(string message) {
      if (InvokeRequired) {
        Invoke(new Action<string>(UpdateBuildSln), message);
      } else
        lblBuild.Text = message;
    }

    private void HidegbxBuild() {
      if (gbxBuild.InvokeRequired) {
        gbxBuild.Invoke(new MethodInvoker(HidegbxBuild));
      } else {
        gbxBuild.Hide();
      }
    }

    private void ShowgbxBuild() {
      if (gbxBuild.InvokeRequired) {
        gbxBuild.Invoke(new MethodInvoker(ShowgbxBuild));
      } else {
        gbxBuild.Show();
      }
    }

    private void UpdatelbxBranches() {
      if (lbxBranches.InvokeRequired) {
        MethodInvoker AssignMethodToControl = new MethodInvoker(UpdatelbxBranches);
        lbxBranches.Invoke(AssignMethodToControl);
      } else {
        lbxBranches.SelectedItems.ToString();
      }
    }
    private void EnableButton() {
      if (btnFinish.InvokeRequired) {
        MethodInvoker AssignMethodToControl = new MethodInvoker(EnableButton);
        btnFinish.Invoke(AssignMethodToControl);
      } else {
        btnFinish.Enabled = true;
      }
    }

    private void DisableButton() {
      if (btnFinish.InvokeRequired) {
        MethodInvoker AssignMethodToControl = new MethodInvoker(DisableButton);
        btnFinish.Invoke(AssignMethodToControl);
      } else {
        btnFinish.Enabled = false;
      }
    }
    public void AppendTextToBuildLog(string message) {
      if (InvokeRequired) {
        this.Invoke(new Action<string>(AppendTextToBuildLog), message);
      } else {
        buildLogTextBox.AppendText(message);
      }
    }

    public void Login(string usrName, string password) {
      client.Authentication.Clear();
      client.Authentication.DefaultCredentials = new NetworkCredential(usrName, password);
    }

#endregion

    #region treeview methods 
    private void CheckAllChildNodes(TreeNode treeNode, bool nodeChecked) {
      foreach (TreeNode node in treeNode.Nodes) {
        node.Checked = nodeChecked;
        if (node.Nodes.Count > 0) {
          // If the current node has child nodes, call the CheckAllChildsNodes method recursively.
          this.CheckAllChildNodes(node, nodeChecked);
        }
      }
    }

    private void LoadTreeView() {
      try {
        trvBranches.Nodes.Clear();
        string branchUrl = tbxBranches.Text;
        TreeNode node = new TreeNode();
        string uri = tbxUrl.Text;
        if ((uri.Substring(uri.Length - Math.Min(1, uri.Length)) != "/")) {
          uri = uri + "/";
        }
        Collection<SvnListEventArgs> contents;
        Collection<SvnListEventArgs> childContents;
        Login(tbxUsername.Text, tbxPwd.Text);
        if (client.GetList(new Uri(uri), out contents)) {
          foreach (SvnListEventArgs item in contents.Skip(1)) {
            node = new TreeNode(item.Path);
            trvBranches.Nodes.Add(node);
            if (client.GetList(new Uri(uri + item.Path), out childContents)) {
              foreach (SvnListEventArgs items in childContents.Skip(1)) {
                node.Nodes.Add(items.Path);
              }
            }
          }
        }
      }
      catch {
        lbxBranches.Items.Clear();
        lbxBranches.Items.Add("The Url is not correct or Authentication needed to acces this Url");
      }
    }

    private void LoadSolutionsTreeView() {
      if (tbxDir.InvokeRequired) {
        tbxDir.Invoke(new Action(LoadSolutionsTreeView));
      } else {
        trvSolution.Nodes.Clear();
        string dir = tbxDir.Text;
        string[] solutions = { "trunk", "branches" };
        TreeNode node = new TreeNode();
        foreach (string sol in solutions) {
          node = new TreeNode(sol);
          trvSolution.Nodes.Add(node);
          if (sol == "trunk") {
            foreach (string filName in (Directory.GetFiles(dir + @"\" + sol + @"\sources", "*.sln"))) {
              node.Nodes.Add(filName);
            }
          } else {
            foreach (string filName in (Directory.GetFiles(dir + @"\" + sol, "*.sln", SearchOption.AllDirectories))) {
              node.Nodes.Add(filName);
            }
          }
        }
        trvSolution.ExpandAll();
      }
    }
    #endregion

    #region svnTasks

    private void SvnTasks() {
      try {
        HidegbxBuild();
        if (lbxBranches.InvokeRequired) {
          lbxBranches.Invoke(new Action(SvnTasks));
        } else {
          ShowProgressBar();
          Thread tr = new Thread(new ThreadStart(SvnTrunk));
          Thread ch = new Thread(CheckoutBranches);
          tr.IsBackground = true;
          ch.IsBackground = true;
          tr.Start();
          ArrayList lstSelItems = new ArrayList();
          UpdatelbxBranches();
          for (int i = 0; i < lbxBranches.SelectedItems.Count; i++) {
            lstSelItems.Add(lbxBranches.SelectedItems[i]);
          }
          ch.Start(lstSelItems);
          if (tr.IsAlive || ch.IsAlive) {
            ShowProgressBar();
          } else {
            HideProgressBar();
          }
          UpdatelblStatus("Cleaning and Updating the directory... ");
        }
      }
      catch (Exception e) {
        UpdatelblStatus(e.Message);
      }
    }

    public void SvnTrunk() {
      try {
        SvnClient client = new SvnClient();
        string trunk = tbxUrl.Text + "/trunk";
        string dir = tbxDir.Text;
        if (System.IO.Directory.Exists(dir + @"\trunk\")) {
          client.CleanUp(Path.Combine(dir, @"\trunk"));
          SvnUpdateResult r;
          client.Update(dir + @"\trunk\", out r);
        } else {
          client.CheckOut(new Uri(trunk), dir +  @"\trunk");
        }
      }
      catch (Exception e) {
        UpdatelblStatus(e.Message);
      }
      trunkStatus.Release();
    }

    public void CheckoutBranches(object selectedItems) {
      try {
        string branches = tbxBranches.Text;
        string dir = tbxDir.Text;
        if (!Directory.Exists(dir + @"\branches\")) {
          Directory.CreateDirectory(dir + @"\branches\");
        }
        UpdatelbxBranches();
        foreach (Object selectedItem in (ArrayList)selectedItems) {
          String br;
          br = selectedItem as String;
          if (!System.IO.Directory.Exists(dir + @"\branches\" + br)) {
            client.CheckOut(new Uri(branches + br), dir+ @"\branches\"+ br);
          } else {
              client.CleanUp(dir + @"\branches\" + br + "\\");
            SvnUpdateResult r;
            client.Update(dir + @"\branches\" + br + "\\", out r);
          }
        }
      }
      catch (Exception e) {
        UpdatelblStatus(e.Message);
      }
      branchStatus.Release();
    }

    private void EndSvn() {
      trunkStatus.WaitOne();
      branchStatus.WaitOne();
      UpdatelblStatus("");
      HideProgressBar();
      ShowgbxBuild();
      Thread solTree = new Thread(LoadSolutionsTreeView);
      solTree.Start();
    }

    #endregion

    #region Build Solution

    private void Build(string fileName) {
      if (InvokeRequired) {
        Invoke(new Action<string>(Build), fileName);
      } else {
        try {
          BuildLogger bl = new BuildLogger(this);
          List<ILogger> blList = new List<ILogger>();
          blList.Add(bl);
          string dir = tbxDir.Text.ToString();
          string config = lbxConfiguration.SelectedItem.ToString();
          string platform = lbxPlatform.SelectedItem.ToString();
          var GlobalProperty = new Dictionary<string, string>();
          GlobalProperty.Add("Configuration", config);
          GlobalProperty.Add("Platform", platform);
          BuildManager.DefaultBuildManager.BeginBuild(new BuildParameters() {
            DetailedSummary = false,
            Loggers = blList
          });
          BuildRequestData request = new BuildRequestData(fileName, GlobalProperty, null, new string[] { "Build" }, null);
          BuildSubmission submission = BuildManager.DefaultBuildManager.PendBuildRequest(request);
          submission.ExecuteAsync(BuildCompletedCallback, null);
        }
        catch (Exception e) {
          UpdatelblStatus(e.Message);
        }
      }
    }


    private void BuildCompletedCallback(BuildSubmission submission) {
      BuildManager.DefaultBuildManager.EndBuild();
      if (submission.BuildResult.Exception is BuildAbortedException) {
        buildAborted = true;
      }
      handle.Release();
    }

    private void BuildAll() {
      List<string> files = new List<string>();
      foreach (string file in lbxSolutions.Items) files.Add(file);
      foreach (string file in files) {
        builder = new Thread(() => Build(file));
        builder.Start();
        UpdateBuildSln("Building " + file);
        handle.WaitOne();
        if (buildAborted) {
          buildAborted = false;
          break;
        }
      }
      UpdateBuildSln("Finished building");
      HidePrbBuild();
      EnableButton();
    }
    
    #endregion

  }
}