// Copyright (c) Ivan Bondarev, Stanislav Mikhalkovich (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
// This is a modified file from SharpDevelop project (Copyright (c) AlphaSierraPapa)
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using VisualPascalABCPlugins;
using VisualPascalABC.Utils;
using Debugger;
using ICSharpCode.TextEditor;
using ICSharpCode.TextEditor.Document;

namespace VisualPascalABC
{
    public class SDBookmark : Bookmark
    {
        public SDBookmark(string fileName, IDocument document, int lineNumber)
            : base(document, lineNumber)
        {
            this.fileName = fileName;
        }

        string fileName;

        public string FileName
        {
            get
            {
                return fileName;
            }
            set
            {
                if (fileName != value)
                {
                    fileName = value;
                    OnFileNameChanged(EventArgs.Empty);
                }
            }
        }

        public event EventHandler FileNameChanged;

        protected virtual void OnFileNameChanged(EventArgs e)
        {
            if (FileNameChanged != null)
            {
                FileNameChanged(this, e);
            }
        }

        bool isSaved = true;

        /// <summary>
        /// Gets/Sets if the bookmark should be saved to the project memento file.
        /// </summary>
        /// <remarks>
        /// Default is true, set this property to false if you are using the bookmark for
        /// something special like like "CurrentLineBookmark" in the debugger.
        /// </remarks>
        public bool IsSaved
        {
            get
            {
                return isSaved;
            }
            set
            {
                isSaved = value;
            }
        }

        bool isVisibleInBookmarkPad = true;

        /// <summary>
        /// Gets/Sets if the bookmark is shown in the bookmark pad.
        /// </summary>
        /// <remarks>
        /// Default is true, set this property to false if you are using the bookmark for
        /// something special like like "CurrentLineBookmark" in the debugger.
        /// </remarks>
        public bool IsVisibleInBookmarkPad
        {
            get
            {
                return isVisibleInBookmarkPad;
            }
            set
            {
                isVisibleInBookmarkPad = value;
            }
        }
    }

    public abstract class SDMarkerBookmark : SDBookmark
    {
        public SDMarkerBookmark(string fileName, IDocument document, int lineNumber)
            : base(fileName, document, lineNumber)
        {
            SetMarker();
        }

        IDocument oldDocument;
        TextMarker oldMarker;

        protected abstract TextMarker CreateMarker();

        void SetMarker()
        {
            RemoveMarker();
            if (Document != null)
            {
                TextMarker marker = CreateMarker();
                // Perform editor update
                Document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.SingleLine, LineNumber));
                Document.CommitUpdate();
                oldMarker = marker;
            }
            oldDocument = Document;
        }

        protected override void OnDocumentChanged(EventArgs e)
        {
            base.OnDocumentChanged(e);
            SetMarker();
        }

        public void RemoveMarker()
        {
            if (oldDocument != null)
            {
                oldDocument.MarkerStrategy.RemoveMarker(oldMarker);
                oldDocument.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.SingleLine, LineNumber));
                oldDocument.CommitUpdate();
            }
            oldDocument = null;
            oldMarker = null;
        }
    }
    public class CurrentBreakpointBookmark : SDMarkerBookmark
    {
        static CurrentBreakpointBookmark instance;

        static int startLine;
        static int startColumn;
        static int endLine;
        static int endColumn;
        bool willBeHit;
        static readonly Color defaultColor = Color.FromArgb(180, 38, 38);
        /*public static void SetPosition(IViewContent viewContent, int makerStartLine, int makerStartColumn, int makerEndLine, int makerEndColumn)
        {
            ITextEditorControlProvider tecp = viewContent as ITextEditorControlProvider;
            if (tecp != null)
                SetPosition(tecp.TextEditorControl.file_name, tecp.TextEditorControl.Document, makerStartLine, makerStartColumn, makerEndLine, makerEndColumn);
            else
                Remove();
        }*/
        private bool isOnCondition = false;
        
        public bool IsOnCondition
        {
        	get
        	{
        		return isOnCondition;
        	}
        	set
        	{
        		isOnCondition = value;
        		if (Document != null)
                {
                    Document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.SingleLine, LineNumber));
                    Document.CommitUpdate();
                }
        	}
        }
        
        public virtual bool WillBeHit
        {
            get
            {
                return willBeHit;
            }
            set
            {
                willBeHit = value;
                if (Document != null)
                {
                    Document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.SingleLine, LineNumber));
                    Document.CommitUpdate();
                }
            }
        }
        
        public static void SetPosition(string fileName, IDocument document, int makerStartLine, int makerStartColumn, int makerEndLine, int makerEndColumn)
        {
            Remove();

            startLine = makerStartLine;
            startColumn = makerStartColumn;
            endLine = makerEndLine;
            endColumn = makerEndColumn;
            
            LineSegment line = document.GetLineSegment(startLine - 1);
            instance = new CurrentBreakpointBookmark(fileName, document, startLine - 1);
            document.BookmarkManager.AddMark(instance);
            document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.LinesBetween, startLine - 1, endLine - 1));
            document.CommitUpdate();
        }

        public static void Remove()
        {
            if (instance != null)
            {
                instance.Document.BookmarkManager.RemoveMark(instance);
                instance.RemoveMarker();
                instance = null;
            }
        }

        public override bool CanToggle
        {
            get
            {
                return false;
            }
        }

        public CurrentBreakpointBookmark(string fileName, IDocument document, int startLine)
            : base(fileName, document, startLine)
        {
            this.IsSaved = false;
            this.IsVisibleInBookmarkPad = false;
        }

        public override void Draw(IconBarMargin margin, Graphics g, Point p)
        {
            margin.DrawBreakpoint(g, p.Y, IsEnabled, WillBeHit,IsOnCondition);
        }

        protected override TextMarker CreateMarker()
        {
            if (LineNumber >= Document.TotalNumberOfLines)
                LineNumber = Document.TotalNumberOfLines - 1;
            LineSegment lineSeg = Document.GetLineSegment(LineNumber);
            TextMarker marker = new TextMarker(lineSeg.Offset, lineSeg.Length, TextMarkerType.SolidBlock, defaultColor, Color.White);
            Document.MarkerStrategy.InsertMarker(0, marker);
            return marker;
        }
    }
	
    public class RuntimeErrorBookmark : SDMarkerBookmark
    {
    	public RuntimeErrorBookmark(string fileName, IDocument document, int startLine):
    		base(fileName, document, startLine)
    	{
    		this.IsSaved = false;
            this.IsVisibleInBookmarkPad = false;
    	}
    	
    	static RuntimeErrorBookmark instance;

        static int startLine;
        static int startColumn;
        static int endLine;
        static int endColumn;
        
        //public static void SetPosition(string file_name, IDocument document, int makerStartLine, int makerEndLine)
        public static void SetPosition(TextEditorControl ctrl, int makerStartLine)
        {
            try
            {
        	    Remove();
			    IDocument document = ctrl.Document;
			    string fileName = ctrl.FileName;
                startLine = makerStartLine;
                endLine = makerStartLine;
			    startColumn=1;
                LineSegment line = document.GetLineSegment(startLine - 1);
                endColumn = line.Length+1;
                instance = new RuntimeErrorBookmark(fileName, document, startLine - 1);
                document.BookmarkManager.AddMark(instance);
                document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.LinesBetween, startLine - 1, startLine - 1));
                document.CommitUpdate();
            }
            catch
            {
            	
            }
        }

        public static void Remove()
        {
            try
            {
        		if (instance != null)
            	{
                	instance.Document.BookmarkManager.RemoveMark(instance);
                	instance.RemoveMarker();
                	instance = null;
            	}
            }
            catch
            {
            	
            }
        }
		
        public override void Draw(IconBarMargin margin, Graphics g, Point p)
        {
            //margin.DrawArrow(g, p.Y);
        }
        
        public override bool CanToggle
        {
            get
            {
                return false;
            }
        }
        
    	protected override TextMarker CreateMarker()
        {
            LineSegment lineSeg = Document.GetLineSegment(startLine - 1);
            //TextMarker marker = new TextMarker(lineSeg.Offset + startColumn - 1, Math.Max(endColumn - startColumn, 1), TextMarkerType.SolidBlock, Color.Yellow, Color.Blue);
            TextMarker marker = new TextMarker(lineSeg.Offset+startColumn - 1, Math.Max(endColumn-startColumn, 1), TextMarkerType.SolidBlock, Color.OrangeRed, Color.White);
            Document.MarkerStrategy.InsertMarker(0, marker);
            return marker;
        }
    }
    
    public class ErrorLineBookmark : SDMarkerBookmark
    {
    	static ErrorLineBookmark instance;

        static int startLine;
        static int startColumn;
        static int endLine;
        static int endColumn;
        
        //public static void SetPosition(string file_name, IDocument document, int makerStartLine, int makerEndLine)
        public static void SetPosition(TextEditorControl ctrl, int makerStartLine)
        {
            try
            {
        	    Remove();
			    IDocument document = ctrl.Document;
			    string fileName = ctrl.FileName;
                startLine = makerStartLine;
                endLine = makerStartLine;
			    startColumn=1;
                LineSegment line = document.GetLineSegment(startLine - 1);
                endColumn = line.Length+1;
                instance = new ErrorLineBookmark(fileName, document, startLine - 1);
                document.BookmarkManager.AddMark(instance);
                document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.LinesBetween, startLine - 1, startLine - 1));
                document.CommitUpdate();
            }
            catch
            {
            	
            }
        }

        public static void Remove()
        {
            try
            {
        		if (instance != null)
            	{
                	instance.Document.BookmarkManager.RemoveMark(instance);
                	instance.RemoveMarker();
                	instance = null;
            	}
            }
            catch
            {
            	
            }
        }

        public override bool CanToggle
        {
            get
            {
                return false;
            }
        }

        public ErrorLineBookmark(string fileName, IDocument document, int startLine)
            : base(fileName, document, startLine)
        {
            this.IsSaved = false;
            this.IsVisibleInBookmarkPad = false;
        }

        public override void Draw(IconBarMargin margin, Graphics g, Point p)
        {
            //margin.DrawArrow(g, p.Y);
        }

        protected override TextMarker CreateMarker()
        {
            LineSegment lineSeg = Document.GetLineSegment(startLine - 1);
            //TextMarker marker = new TextMarker(lineSeg.Offset + startColumn - 1, Math.Max(endColumn - startColumn, 1), TextMarkerType.SolidBlock, Color.Yellow, Color.Blue);
            TextMarker marker = new TextMarker(lineSeg.Offset+startColumn - 1, Math.Max(endColumn-startColumn, 1), TextMarkerType.SolidBlock, Color.Red, Color.White);
            Document.MarkerStrategy.InsertMarker(0, marker);
            return marker;
        }
    }
    
    public class CurrentLineBookmark : SDMarkerBookmark
    {
        static CurrentLineBookmark instance;

        static int startLine;
        static int startColumn;
        static int endLine;
        static int endColumn;

        /*public static void SetPosition(IViewContent viewContent, int makerStartLine, int makerStartColumn, int makerEndLine, int makerEndColumn)
        {
            ITextEditorControlProvider tecp = viewContent as ITextEditorControlProvider;
            if (tecp != null)
                SetPosition(tecp.TextEditorControl.file_name, tecp.TextEditorControl.Document, makerStartLine, makerStartColumn, makerEndLine, makerEndColumn);
            else
                Remove();
        }*/
		
        public static void SetPosition(string fileName, IDocument document, int makerStartLine, int makerStartColumn, int makerEndLine, int makerEndColumn)
        {
            Remove();

            startLine = makerStartLine;
            startColumn = makerStartColumn;
            endLine = makerEndLine;
            endColumn = makerEndColumn;

            LineSegment line = document.GetLineSegment(startLine - 1);
            instance = new CurrentLineBookmark(fileName, document, startLine - 1);
            document.BookmarkManager.AddMark(instance);
            document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.LinesBetween, startLine - 1, endLine - 1));
            document.CommitUpdate();
        }

        public static void Remove()
        {
            if (instance != null)
            {
                instance.Document.BookmarkManager.RemoveMark(instance);
                instance.RemoveMarker();
                instance = null;
            }
        }

        public override bool CanToggle
        {
            get
            {
                return false;
            }
        }

        public CurrentLineBookmark(string fileName, IDocument document, int startLine)
            : base(fileName, document, startLine)
        {
            this.IsSaved = false;
            this.IsVisibleInBookmarkPad = false;
        }

        public override void Draw(IconBarMargin margin, Graphics g, Point p)
        {
            margin.DrawArrow(g, p.Y);
        }

        protected override TextMarker CreateMarker()
        {
            LineSegment lineSeg = Document.GetLineSegment(startLine - 1);
            //TextMarker marker = new TextMarker(lineSeg.Offset + startColumn - 1, Math.Max(endColumn - startColumn, 1), TextMarkerType.SolidBlock, Color.Yellow, Color.Blue);
            TextMarker marker = new TextMarker(lineSeg.Offset + startColumn - 1, Math.Max(endColumn - startColumn, 1), TextMarkerType.SolidBlock, Color.Yellow, Color.Blue);
            Document.MarkerStrategy.InsertMarker(0, marker);
            return marker;
        }
    }

    public enum DebugStatus
    {
        None,
        StepOver,
        StepIn
    }
	
    public enum hit_kind
    {
    	is_true,
    	changed
    }
    
    public class BreakpointInfo
    {
    	public bool enabled=true;
    	public string condition;
    	public hit_kind kind= hit_kind.is_true;
    	public RetValue val;
    }
    
    public class BreakPointFactory
    {
        public static Dictionary<CurrentBreakpointBookmark, Mono.Debugging.Client.Breakpoint> breakpoints = new Dictionary<CurrentBreakpointBookmark, Mono.Debugging.Client.Breakpoint>();
        public static Dictionary<Mono.Debugging.Client.Breakpoint, BreakpointInfo> breakpoints_conditions = new Dictionary<Mono.Debugging.Client.Breakpoint, BreakpointInfo>();
        static BreakPointFactory()
        {

        }
		
        private static BreakpointConditionForm bcf;
        
        public static bool MustHit(Mono.Debugging.Client.Breakpoint br)
        {
        	BreakpointInfo bi = null;
        	if (breakpoints_conditions.TryGetValue(br,out bi))
        	{
        		if (!bi.enabled) 
        			return true;
        		string cond = bi.condition.Trim(' ','\t');
        		if (string.IsNullOrEmpty(cond))
        			return true;
        		try
        		{
        			RetValue res = WorkbenchServiceFactory.DebuggerManager.Evaluate(cond);
        			if (bi.kind == hit_kind.is_true)
        			{
        				if (res.prim_val != null && res.prim_val is bool)
        				{
        					if ((bool)res.prim_val)
        						return true;
        					else
        						return false;
        				}
        				else if (res.obj_val != null && res.obj_val.IsPrimitive && res.obj_val.PrimitiveValue is bool)
        				{
        					if ((bool)res.obj_val.PrimitiveValue)
        						return true;
        					else
        						return false;
        				}
        				else
        					return true;
        			}
        			else
        			{
        				if (res.obj_val != null && res.obj_val.IsPrimitive)
        				{
        					res.prim_val = res.obj_val.PrimitiveValue;
        					res.obj_val = null;
        				}
        				if (!WorkbenchServiceFactory.DebuggerManager.evaluator.IsEqual(res,bi.val))
        				{
        					bi.val = res;
        					return true;
        				}
        				else
        					return false;
        			}
        		}
        		catch
        		{
        			return true;
        		}
        	}
        	else
        		return true;
        }
        
        public static void InvokeAddCondition()
        {
        	if (bcf == null)
        	{
        		bcf = new BreakpointConditionForm();
        		Form1StringResources.SetTextForAllControls(bcf);
        	}
        	BreakpointInfo bi = null;
            Mono.Debugging.Client.Breakpoint br = breakpoints[cur_bookmark];
        	if (breakpoints_conditions.TryGetValue(br,out bi))
        	{
        		bcf.IsConditionEnabled = bi.enabled;
        		bcf.Condition = bi.condition;
        		if (bi.kind == hit_kind.is_true)
        			bcf.IfTrue = true;
        		else
        			bcf.IfChanged = true;
        	}
        	else
        	{
        		bcf.IsConditionEnabled = true;
        		bcf.Condition = "";
        		bcf.IfTrue = true;
        	}
        	if (bcf.ShowDialog() == DialogResult.OK)
        	{
        		if (bi == null)
        		{
        			bi = new BreakpointInfo();
        			breakpoints_conditions.Add(br,bi);
        		}
        		bi.enabled = bcf.IsConditionEnabled;
        		bi.condition = bcf.Condition;
        		if (bcf.IfTrue)
        			bi.kind = hit_kind.is_true;
        		else
        			bi.kind = hit_kind.changed;
        		cur_bookmark.IsOnCondition = bi.enabled && !string.IsNullOrEmpty(bi.condition.Trim(' ','\t'));
        		
        	}
        }
        
        public static void AddBreakpoints(string FileName, TextArea text_area)
        {
            List<Mono.Debugging.Client.Breakpoint> br_list = WorkbenchServiceFactory.DebuggerManager.GetBreakpointsInFile(FileName);
            foreach (Mono.Debugging.Client.Breakpoint br in br_list)
            {
                ToggleBreakpointAtByOpen(text_area.Document, br.FileName, br.Line-1, br);
            }
        }

        public static void ToggleBreakpointAtByOpen(IDocument document, string fileName, int lineNumber, Mono.Debugging.Client.Breakpoint br)
        {
            foreach (char ch in document.GetText(document.GetLineSegment(lineNumber)))
            {
                if (!char.IsWhiteSpace(ch))
                {
                    CurrentBreakpointBookmark cbb = new CurrentBreakpointBookmark(fileName, document, lineNumber);
                    breakpoints.Add(cbb, br);
                    document.BookmarkManager.AddMark(cbb);
                    document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.SingleLine, lineNumber));
                    document.CommitUpdate();
                    break;
                }
            }
        }
		
        public static CurrentBreakpointBookmark IsOnBreakpoint(IDocument document, int lineNumber)
        {
        	foreach (Bookmark m in document.BookmarkManager.Marks)
            {
                CurrentBreakpointBookmark breakpoint = m as CurrentBreakpointBookmark;
                if (breakpoint != null)
                {
                    if (breakpoint.LineNumber == lineNumber)
                    {
                    	return breakpoint;
                    }
                }
        	}
        	return null;
        }
        
        public static bool HasBreakpoints()
        {
        	return breakpoints.Count > 0;
        }
        
        public static void ToggleBreakpointAt(IDocument document, string fileName, int lineNumber)
        {
            foreach (Bookmark m in document.BookmarkManager.Marks)
            {
                CurrentBreakpointBookmark breakpoint = m as CurrentBreakpointBookmark;
                if (breakpoint != null)
                {
                    if (breakpoint.LineNumber == lineNumber)
                    {
                    	document.BookmarkManager.RemoveMark(m);
                        try
                        {
                            if (breakpoints_conditions.ContainsKey(breakpoints[breakpoint]))
                    		breakpoints_conditions.Remove(breakpoints[breakpoint]);
                        	WorkbenchServiceFactory.DebuggerManager.RemoveBreakpoint(breakpoints[breakpoint]);
                        }
                        catch (System.Exception)
                        {
                        }
                        breakpoints.Remove(breakpoint);
                        breakpoint.RemoveMarker();
                        return;
                    }
                }
            }
            foreach (char ch in document.GetText(document.GetLineSegment(lineNumber)))
            {
                if (!char.IsWhiteSpace(ch))
                {
                    CurrentBreakpointBookmark cbb = new CurrentBreakpointBookmark(fileName, document, lineNumber);
                    breakpoints.Add(cbb, WorkbenchServiceFactory.DebuggerManager.AddBreakPoint(fileName, lineNumber + 1,true));
                    document.BookmarkManager.AddMark(cbb);
                    document.RequestUpdate(new TextAreaUpdate(TextAreaUpdateType.SingleLine, lineNumber));
                    document.CommitUpdate();
                    break;
                }
            }
        }
		
        public static CurrentBreakpointBookmark cur_bookmark = null;
        
        public static void DeleteCurrentBreakpoint()
        {
        	if (cur_bookmark != null)
        	{
        		ToggleBreakpointAt(cur_bookmark.Document,cur_bookmark.FileName,cur_bookmark.LineNumber);
        	}
        }
        
        public static void IconBarMouseDown(AbstractMargin iconBar, Point mousepos, MouseButtons mouseButtons)
        {
            try
            {
                if (mouseButtons != MouseButtons.Left)
                {
                	if (mouseButtons == MouseButtons.Right)
                	{
                		iconBar.TextArea.MotherTextEditorControl.ContextMenuStrip = null;
                		Rectangle viewRect = iconBar.TextArea.TextView.DrawingPosition;
                		ICSharpCode.TextEditor.TextLocation logicPos = iconBar.TextArea.TextView.GetLogicalPosition(0, mousepos.Y - viewRect.Top);
                		if (logicPos.Y >= 0 && logicPos.Y < iconBar.TextArea.Document.TotalNumberOfLines)
                		{
                			cur_bookmark = IsOnBreakpoint(iconBar.TextArea.Document,logicPos.Y);
                			if (cur_bookmark != null)
                			{
                				iconBar.TextArea.MotherTextEditorControl.ContextMenuStrip = VisualPABCSingleton.MainForm.BreakpointMenuStrip;
                			}
                		}
                	}
                	return;
                }
                else
                {
                	Rectangle viewRect = iconBar.TextArea.TextView.DrawingPosition;
                	//Point logicPos = iconBar.TextArea.TextView.GetLogicalPosition(0, mousepos.Y - viewRect.Top);
                	ICSharpCode.TextEditor.TextLocation logicPos = iconBar.TextArea.TextView.GetLogicalPosition(0, mousepos.Y - viewRect.Top);
                	if (logicPos.Y >= 0 && logicPos.Y < iconBar.TextArea.Document.TotalNumberOfLines)
                	{
                    	string s = iconBar.TextArea.MotherTextEditorControl.FileName;
                    	if (s == null) s = TextAreaHelper.GetFileNameByTextArea(iconBar.TextArea);
                    	ToggleBreakpointAt(iconBar.TextArea.Document, s, logicPos.Y);
                   	 	iconBar.TextArea.Refresh(iconBar);
               	 	}
                }
            }
            catch (System.Exception e)
            {
            }
        }
    }

}