using System;
using System.ComponentModel.Design;
using System.Globalization;
using Microsoft.VisualStudio.Shell;
using Microsoft.VisualStudio.Shell.Interop;
using System.Collections.Generic;
using EnvDTE;
using EnvDTE80;
using Microsoft.VisualStudio;
using System.Linq;
using TestStack.White.UIItems.Finders;
using TestStack.White.InputDevices;
using TestStack.White.UIItems;
using VSLangProj;
using System.Runtime.InteropServices;
using TestStack.White.WindowsAPI;
using System.IO;
using Microsoft.VisualStudio.Threading;

namespace Tango.BuildExtensions
{
    public class VSIXBase
    {
        private IVsThreadedWaitDialog2 _vsProgress = null;

        public IServiceProvider BaseServiceProvider { get; private set; }

        public DTE2 DTE { get; private set; }

        public VSIXBase(IServiceProvider serviceProvider)
        {
            BaseServiceProvider = serviceProvider;
            DTE = GetActiveIDE();
        }

        #region Solution & Projects

        private DTE2 GetActiveIDE()
        {
            // Get an instance of currently running Visual Studio IDE.
            DTE2 dte2 = Package.GetGlobalService(typeof(DTE)) as DTE2;
            return dte2;
        }

        public IList<Project> GetSolutionProjects()
        {
            Projects projects = GetActiveIDE().Solution.Projects;
            List<Project> list = new List<Project>();
            var item = projects.GetEnumerator();
            while (item.MoveNext())
            {
                var project = item.Current as Project;
                if (project == null)
                {
                    continue;
                }

                if (project.Kind == ProjectKinds.vsProjectKindSolutionFolder)
                {
                    list.AddRange(GetSolutionFolderProjects(project));
                }
                else
                {
                    list.Add(project);
                }
            }

            return list;
        }

        private IEnumerable<Project> GetSolutionFolderProjects(Project solutionFolder)
        {
            List<Project> list = new List<Project>();
            for (var i = 1; i <= solutionFolder.ProjectItems.Count; i++)
            {
                var subProject = solutionFolder.ProjectItems.Item(i).SubProject;
                if (subProject == null)
                {
                    continue;
                }

                // If this is another solution folder, do a recursive call, otherwise add
                if (subProject.Kind == ProjectKinds.vsProjectKindSolutionFolder)
                {
                    list.AddRange(GetSolutionFolderProjects(subProject));
                }
                else
                {
                    list.Add(subProject);
                }
            }
            return list;
        }

        public List<ProjectItem> GetProjectItems(Project project)
        {
            List<ProjectItem> results = new List<ProjectItem>();
            FillProjectItems(project.ProjectItems.OfType<ProjectItem>().ToList(), results);
            return results;
        }

        private void FillProjectItems(List<ProjectItem> rootItems, List<ProjectItem> results)
        {
            foreach (var item in rootItems)
            {
                results.Add(item);

                if (item.ProjectItems.Count > 0)
                {
                    FillProjectItems(item.ProjectItems.OfType<ProjectItem>().ToList(), results);
                }
            }
        }

        protected String GetProjectOutputFilePath(EnvDTE.Project vsProject)
        {
            string fullPath = vsProject.Properties.Item("FullPath").Value.ToString();

            string outputPath = vsProject.ConfigurationManager.ActiveConfiguration.Properties.Item("OutputPath").Value.ToString();

            string outputDir = Path.Combine(fullPath, outputPath);

            string outputFileName = vsProject.Properties.Item("OutputFileName").Value.ToString();

            string assemblyPath = Path.Combine(outputDir, outputFileName);

            return assemblyPath;
        }

        protected void SelectSolutionExplorerNode(string nodePath)
        {
            EnvDTE.UIHierarchyItem item;

            try
            {
                item = DTE.ToolWindows.SolutionExplorer.GetItem(nodePath);
                item.Select(vsUISelectionType.vsUISelectionTypeSelect);
            }
            catch (Exception ex)
            {
                System.Windows.Forms.MessageBox.Show(ex.ToString());
            }
        }

        protected void ExpandSolutionExplorerNode(string nodePath)
        {
            EnvDTE.UIHierarchyItem item;

            try
            {
                var explorer = DTE.ToolWindows.SolutionExplorer;

                item = explorer.GetItem(nodePath);
                item.Select(vsUISelectionType.vsUISelectionTypeSelect);

                if (!item.UIHierarchyItems.Expanded)
                {
                    explorer.DoDefaultAction();
                }
            }
            catch (Exception ex)
            {
                System.Windows.Forms.MessageBox.Show(ex.ToString());
            }
        }

        #endregion

        #region Notifications

        public void WriteToConsole(String text)
        {
            ThreadHelper.ThrowIfNotOnUIThread();
            // Get the output window
            var outputWindow = Package.GetGlobalService(typeof(SVsOutputWindow)) as IVsOutputWindow;

            // Ensure that the desired pane is visible
            var paneGuid = Microsoft.VisualStudio.VSConstants.OutputWindowPaneGuid.GeneralPane_guid;
            IVsOutputWindowPane pane;
            outputWindow.CreatePane(paneGuid, "General", 1, 0);
            outputWindow.GetPane(paneGuid, out pane);

            // Output the message
            pane.OutputString(text + Environment.NewLine);
        }

        public void ShowMessage(String text)
        {
            // Show a message box to prove we were here

            VsShellUtilities.ShowMessageBox(
                            BaseServiceProvider,
                            text,
                            "Tango",
                            OLEMSGICON.OLEMSGICON_INFO,
                            OLEMSGBUTTON.OLEMSGBUTTON_OK,
                            OLEMSGDEFBUTTON.OLEMSGDEFBUTTON_FIRST);
        }

        #endregion

        #region Windows API

        protected WindowInfo WaitForWindowOpen(String title)
        {
            WindowInfo window = null;

            do
            {
                window = WindowInfo.GetAllWindows().SelectMany(x => x.Children).FirstOrDefault(x => x.Caption == title);
            } while (window == null);

            return window;
        }

        protected void WaitForWindowClose(String title)
        {
            while (WindowInfo.GetAllWindows().SelectMany(x => x.Children).ToList().Exists(x => x.Caption == title))
            {
                System.Threading.Thread.Sleep(100);
            }
        }

        #endregion

        #region Threading

        protected void Wait(int milli)
        {
            System.Threading.Thread.Sleep(milli);
        }

        #endregion

        #region Status Form

        protected void OpenVSProgress(String title, String message, bool intermediate)
        {
#pragma warning disable VSTHRD001 // Avoid legacy thread switching APIs
            ThreadHelper.Generic.Invoke(() =>
#pragma warning restore VSTHRD001 // Avoid legacy thread switching APIs
            {
                _vsProgress = null;
                ThreadHelper.ThrowIfNotOnUIThread();
                IVsThreadedWaitDialogFactory dialogFactory = BaseServiceProvider.GetService(typeof(SVsThreadedWaitDialogFactory)) as IVsThreadedWaitDialogFactory;
                dialogFactory.CreateInstance(out _vsProgress);


                if (intermediate)
                {
                    _vsProgress.StartWaitDialog(title, message, "", null, null, 0, false, true);
                }
                else
                {
                    _vsProgress.StartWaitDialogWithPercentageProgress(title, message, "", null, null, false, 0, 0, 100);
                }
            });
        }



        protected void SetVSProgress(String message, String progressText = null, int current = 0, int total = 0)
        {
#pragma warning disable VSTHRD001 // Avoid legacy thread switching APIs
            ThreadHelper.Generic.Invoke(() =>
#pragma warning restore VSTHRD001 // Avoid legacy thread switching APIs
            {
                ThreadHelper.ThrowIfNotOnUIThread();
                bool c;
                _vsProgress.UpdateProgress(message, progressText, null, current, total, true, out c);
            });
        }

        protected void CloseVSProgress()
        {
#pragma warning disable VSTHRD001 // Avoid legacy thread switching APIs
            ThreadHelper.Generic.Invoke(() =>
#pragma warning restore VSTHRD001 // Avoid legacy thread switching APIs
            {
                _vsProgress.EndWaitDialog();
            });
        }

        #endregion

        #region Content

        protected string GetFullPathToContentFile(String fileName)
        {
            return Path.Combine(Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().CodeBase), fileName).Replace("file:\\", "");
        }

        #endregion

        #region IO

        /// <summary>
        /// Copies the specified directory source path to the specified destination.
        /// </summary>
        /// <param name="sourcePath">The source path.</param>
        /// <param name="destinationPath">The destination path.</param>
        /// <param name="copySubDirs">if set to <c>true</c> will copy sub directories.</param>
        /// <exception cref="DirectoryNotFoundException">Source directory does not exist or could not be found: "
        ///                     + sourcePath</exception>
        protected void CopyDirectory(string sourcePath, string destinationPath, bool copySubDirs, Action<String> progress = null)
        {
            // Get the subdirectories for the specified directory.
            DirectoryInfo dir = new DirectoryInfo(sourcePath);

            if (!dir.Exists)
            {
                throw new DirectoryNotFoundException(
                    "Source directory does not exist or could not be found: "
                    + sourcePath);
            }

            DirectoryInfo[] dirs = dir.GetDirectories();
            // If the destination directory doesn't exist, create it.
            if (!Directory.Exists(destinationPath))
            {
                Directory.CreateDirectory(destinationPath);
            }

            // Get the files in the directory and copy them to the new location.
            FileInfo[] files = dir.GetFiles();
            foreach (FileInfo file in files)
            {
                string temppath = Path.Combine(destinationPath, file.Name);
                progress?.Invoke(temppath);
                file.CopyTo(temppath, true);
            }

            // If copying subdirectories, copy them and their contents to new location.
            if (copySubDirs)
            {
                foreach (DirectoryInfo subdir in dirs)
                {
                    string temppath = Path.Combine(destinationPath, subdir.Name);
                    CopyDirectory(subdir.FullName, temppath, copySubDirs);
                }
            }
        }

        #endregion
    }
}