//
// Solution.cs
//
//code taken in project https://sourceforge.net/projects/syncproj/
// no licence info was included, I took the liberty to modify it.
// Author:
//		tarmopikaro
//      2018 Jean-Philippe Bruyère
//MIT-licenced

using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Linq;
using System.Reflection;
using Microsoft.Build.Construction;

namespace Crow.Coding
{
	public class StyleItemContainer {
		public object Value;
		public string Name;
		public StyleItemContainer(string name, object _value){
			Name = name;
			Value = _value;
		}
	}
	public class StyleContainer : IValueChange {
		#region IValueChange implementation
		public event EventHandler<ValueChangeEventArgs> ValueChanged;
		public virtual void NotifyValueChanged(string MemberName, object _value)
		{
			ValueChanged.Raise(this, new ValueChangeEventArgs(MemberName, _value));
		}
		#endregion

		Style style;
		bool isExpanded;

		public string Name;
		public List<StyleItemContainer> Items;
		public bool IsExpanded
		{
			get { return isExpanded; }
			set
			{
				if (value == isExpanded)
					return;
				isExpanded = value;
				NotifyValueChanged ("IsExpanded", isExpanded);
			}
		}
		public StyleContainer(string name, Style _style){
			Name = name;
			style = _style;

			Items = new List<StyleItemContainer> ();
			foreach (string k in style.Keys) {
				Items.Add(new StyleItemContainer(k, style[k]));
			}
		}
	}


	/// <summary>
/// .sln loaded into class.
/// </summary>
	public class Workspace: IValueChange
	{
		#region IValueChange implementation
		public event EventHandler<ValueChangeEventArgs> ValueChanged;
		public virtual void NotifyValueChanged(string MemberName, object _value)
		{
			ValueChanged.Raise(this, new ValueChangeEventArgs(MemberName, _value));
		}
		#endregion

		SolutionFile solutionFile;

		ProjectItem selectedItem = null;
		object selectedItemElement = null;
		ObservableList<ProjectItem> openedItems = new ObservableList<ProjectItem>();
		ObservableList<GraphicObjectDesignContainer> toolboxItems;

		public Dictionary<string, Style> Styling;
		public Dictionary<string, string> DefaultTemplates;

		public List<Style> Styles { get { return Styling.Values.ToList(); }}
		public List<StyleContainer> StylingContainers;
		//TODO: check project dependencies if no startup proj

		public void ReloadStyling () {
			Styling = new Dictionary<string, Style> ();
			if (StartupProject != null)
				StartupProject.GetStyling ();
			StylingContainers = new List<StyleContainer> ();
			foreach (string k in Styling.Keys) 
				StylingContainers.Add (new StyleContainer (k, Styling [k]));
			foreach (ImlProjectItem pf in openedItems.OfType<ImlProjectItem>()) {
				pf.SignalEditorOfType<ImlVisualEditor> ();
			}
		}
		public string[] AvailaibleStyles {
			get { return Styling == null ? new string[] {} : Styling.Keys.ToArray();}
		}
		public void ReloadDefaultTemplates () {
			DefaultTemplates = new Dictionary<string, string>();
			if (StartupProject != null)
				StartupProject.GetDefaultTemplates ();
		}
		public void updateToolboxItems () {
			Type[] crowItems = AppDomain.CurrentDomain.GetAssemblies ()
				.SelectMany (t => t.GetTypes ())
				.Where (t => t.IsClass && !t.IsAbstract && t.IsPublic &&					
					t.Namespace == "Crow" && t.IsSubclassOf(typeof(Widget)) &&
					t.GetCustomAttribute<DesignIgnore>(false) == null).ToArray ();
			ToolboxItems = new ObservableList<GraphicObjectDesignContainer> ();
			foreach (Type ci in crowItems) {
				toolboxItems.Add(new GraphicObjectDesignContainer(ci));
			}
		}
		public bool GetProjectFileFromPath (string path, out ProjectFile pi){
			pi = null;
			return false;/* StartupProject == null ? false :
				StartupProject.TryGetProjectFileFromPath (path, out pi);*/
		}

		public ObservableList<ProjectItem> OpenedItems {
			get { return openedItems; }
			set {
				if (openedItems == value)
					return;
				openedItems = value;
				NotifyValueChanged ("OpenedItems", openedItems);
			}
		}

		public ObservableList<GraphicObjectDesignContainer> ToolboxItems {
			get { return toolboxItems; }
			set {
				if (toolboxItems == value)
					return;
				toolboxItems = value;
				NotifyValueChanged ("ToolboxItems", toolboxItems);
			}			
		}
		public ProjectItem SelectedItem {
			get { return selectedItem; }
			set {
				if (selectedItem == value)
					return;
				if (SelectedItem != null)
					SelectedItem.IsSelected = false;
				selectedItem = value;
				if (SelectedItem != null) 
					SelectedItem.IsSelected = true;

				//UserConfig.Set ("SelectedProjItems", SelectedItem?.AbsolutePath);

				NotifyValueChanged ("SelectedItem", selectedItem);
			}
		}
		public object SelectedItemElement {
			get { return selectedItemElement; }
			set {
				if (selectedItemElement == value)
					return;
				selectedItemElement = value;
				NotifyValueChanged ("SelectedItemElement", selectedItemElement);
			}
		}
		public string DisplayName {
			get { return name; }
		}
		/// <summary>
		/// Gets solution path
		/// </summary>
		public String SolutionFolder
		{
			get { return Path.GetDirectoryName (path); }
		}

//		public System.CodeDom.Compiler.CompilerErrorCollection CompilationErrors {
//			get {
//				System.CodeDom.Compiler.CompilerErrorCollection tmp = Projects.SelectMany<Project>
//					(p => p.CompilationResults.Errors);
//				return tmp;
//			}
//		}
		public List<System.CodeDom.Compiler.CompilerError> CompilerErrors {
			get {
				int errCount = 0;
				for (int i = 0; i < Projects.Count; i++) {
					if (Projects [i].CompilationResults != null)
						errCount += Projects [i].CompilationResults.Errors.Count;
				}
				System.CodeDom.Compiler.CompilerError[] tmp = new System.CodeDom.Compiler.CompilerError[errCount];

				int ptr = 0;
				for (int i = 0; i < Projects.Count; i++) {
					if (Projects [i].CompilationResults == null)
						continue;
					Projects [i].CompilationResults.Errors.CopyTo (tmp,ptr);
					ptr += Projects [i].CompilationResults.Errors.Count;
				}
				return new List<System.CodeDom.Compiler.CompilerError>(tmp);
			}
		}

		public void UpdateErrorList () {
			NotifyValueChanged ("CompilerErrors", CompilerErrors);
		}

		void saveOpenedItemsInUserConfig (){
			if (openedItems.Count == 0)
				UserConfig.Set ("OpenedItems", "");
			else
				UserConfig.Set ("OpenedItems", openedItems.Select(o => o.AbsolutePath).Aggregate((a,b)=>a + ";" + b));
		}
		public void ReopenItemsSavedInUserConfig () {
			string tmp = UserConfig.Get<string> ("OpenedItems");
			string sel = UserConfig.Get<string> ("SelectedProjItems");
			ProjectFile selItem = null;
			if (string.IsNullOrEmpty (tmp))
				return;
			foreach (string f in tmp.Split(';')) {
				foreach (Project p in Projects) {
					ProjectFile pi;
					/*if (p.TryGetProjectFileFromAbsolutePath (f, out pi)) {
						pi.Open ();
						if (pi.AbsolutePath == sel)
							selItem = pi;
						break;
					}*/
				}
			}
			if (selItem == null)
				return;
			selItem.IsSelected = true;
		}

		/*void onSelectedItemChanged (object sender, SelectionChangeEventArgs e){							
			SelectedItem = e.NewValue as ProjectItem;
			UserConfig.Set ("SelectedProjItems", SelectedItem?.AbsolutePath);
		}*/

		public void OpenItem (ProjectItem pi) {
			if (!openedItems.Contains (pi)) {
				openedItems.Add (pi);
				saveOpenedItemsInUserConfig ();
			}
		}
		public void CloseItem (ProjectItem pi) {			
			openedItems.Remove (pi);
			saveOpenedItemsInUserConfig ();
		}

		public void CloseSolution () {
			while (openedItems.Count > 0) {
				openedItems.Remove (openedItems [0]);
			}
			while (toolboxItems?.Count > 0) {
				toolboxItems.Remove (toolboxItems [0]);
			}
			NotifyValueChanged ("Projects", null);
		}
	    /// <summary>
	    /// Solution name
	    /// </summary>
	    String name;
		/// <summary>
		/// File path from where solution was loaded.
		/// </summary>
		[XmlIgnore]
		String path;

	    /// <summary>
	    /// Solution name for debugger.
	    /// </summary>
	    [ExcludeFromCodeCoverage]
	    public override string ToString()
	    {
	        return "Solution: " + name;
	    }
			
		#region Solution properties
	    double slnVer;                                      // 11.00 - vs2010, 12.00 - vs2015

	    /// <summary>
	    /// Visual studio version information used for generation, for example 2010, 2012, 2015 and so on...
	    /// </summary>
	    public int fileFormatVersion;

	    /// <summary>
	    /// null for old visual studio's
	    /// </summary>
	    public String VisualStudioVersion;
	    
	    /// <summary>
	    /// null for old visual studio's
	    /// </summary>
	    public String MinimumVisualStudioVersion;

	    /// <summary>
	    /// List of project included into solution.
	    /// </summary>
	    public List<Project> Projects = new List<Project>();

	    /// <summary>
	    /// List of configuration list, in form "{Configuration}|{Platform}", for example "Release|Win32".
	    /// To extract individual platforms / configuration list, use following functions.
	    /// </summary>
	    public List<String> configurations = new List<string>();

	    /// <summary>
	    /// Extracts platfroms supported by solution
	    /// </summary>
	    public IEnumerable<String> getPlatforms()
	    {
	        return configurations.Select(x => x.Split('|')[1]).Distinct();
	    }

	    /// <summary>
	    /// Extracts configuration names supported by solution
	    /// </summary>
	    public IEnumerable<String> getConfigurations()
	    {
	        return configurations.Select(x => x.Split('|')[0]).Distinct();
	    }
		#endregion

		public Configuration UserConfig;

		public Project StartupProject {
			get { return null; }// Projects?.FirstOrDefault (p => p.ProjectGuid == UserConfig.Get<string> ("StartupProject")); }
			set {
				if (value == StartupProject)
					return;
				if (value == null)
					UserConfig.Set ("StartupProject", "");
				else {
					UserConfig.Set ("StartupProject", value.ProjectGuid);
					value.NotifyValueChanged("IsStartupProject", true);
				}
				NotifyValueChanged ("StartupProject", StartupProject);
				ReloadStyling ();
				ReloadDefaultTemplates ();
			}
		}

		#region CTOR
		/// <summary>
		/// Creates new solution.
		/// </summary>
		public Workspace (string path)
		{
			this.path = path;
			solutionFile = SolutionFile.Parse (path);
			UserConfig = new Configuration (path + ".user");

			foreach (ProjectInSolution pis in solutionFile.ProjectsInOrder) {
				switch (pis.ProjectType) {
				case SolutionProjectType.Unknown:
					break;
				case SolutionProjectType.KnownToBeMSBuildFormat:
					Projects.Add (new Project (this, pis));
					break;
				case SolutionProjectType.SolutionFolder:
					break;
				case SolutionProjectType.WebProject:
					break;
				case SolutionProjectType.WebDeploymentProject:
					break;
				case SolutionProjectType.EtpSubProject:
					break;
				case SolutionProjectType.SharedProject:
					break;
				}
			}
		}
		#endregion
	}
}