using System;
using System.Collections.Generic;
using System.Collections;
using System.Windows.Forms;
using System.IO;
using UAF.Remoting;

namespace MemoryViewer
{
    public partial class MemoryEvent : Form
    {
        private  Hashtable nodesTable = new Hashtable();

        public MemoryEvent()
        {
            InitializeComponent();

            checkboxlistEvent.Items.Clear();
        }

        class NodeInfo
        {
            public UInt32 parentTag;
            public UInt32 eventTag;
        }

        public void fill(IBlob blob)
        {
            checkboxlistEvent.Items.Clear();
            UInt32 countEvent = 0;
            blob.Extract(out countEvent);
            string nameEvent = "";
            UInt32 parentTag = 0;
            UInt32 eventTag = 0;

            nodesTable.Clear();
            treeViewEvent.Nodes.Clear();

            for (UInt32 index = 0; index < countEvent; ++index)
            {
                blob.Extract(out nameEvent);
                blob.Extract(out parentTag);
                blob.Extract(out eventTag);

                TreeNode node = new TreeNode();
                node.Text = nameEvent;
                
                NodeInfo nodeInfo = new NodeInfo();
                nodeInfo.parentTag = parentTag;
                nodeInfo.eventTag = eventTag;
                node.Tag = nodeInfo;

                nodesTable[eventTag] = node;

                if (nodesTable[parentTag] != null)
                {
                    TreeNode nodeParent = (TreeNode)nodesTable[parentTag];
                    nodeParent.Nodes.Add(node);
                }
                else
                {
                    treeViewEvent.Nodes.Add(node);
                }
            }

            treeViewEvent.ExpandAll();

        }

        public class callStackAllocation
        {
            public List<string> stack = new List<string>();
            public int allocationSize = 0;

            public void dump(ref List<string>listLine)
            {
                foreach (string s in stack)
                {
                    listLine.Add(s);
                }

                listLine.Add("");
            }
        }


        public void fillResult(IBlob blob)
        {
            String EventName = "";
            blob.Extract(out EventName);

            UInt32 countAllocation = 0;
            blob.Extract(out countAllocation);

            string FilenameDump = "";
            blob.Extract(out FilenameDump);

            float timeComputation = 0.0f;
            blob.Extract(out timeComputation);
            timeComputation *= 1000.0f;
                
            labelAllocation.Text        = "Allocation by frame: " + countAllocation.ToString();  
            labelTimeComputation.Text   = "Time computation: " + timeComputation.ToString() + " ms";

            //open the file and analyze
            if (File.Exists(FilenameDump))
            {
                List<string> dst = new List<string>();
                MemoryUtils.readFromFile(ref dst,FilenameDump,true);

                bool lineInfo = true;
                List<callStackAllocation> callstackList = new List<callStackAllocation>();
                callStackAllocation callstack = null;
                foreach (string line in dst)
                {
                   if (lineInfo)
                   {
                       callstack     = new callStackAllocation();
                       callstack.allocationSize = int.Parse(line);
                       callstackList.Add(callstack);
                       
                       lineInfo = false;
                   }
                   else
                   {
                       if (line == "") 
                       {
                           lineInfo = true;//next line is an info
                       }
                       else //it s call stack
                       {
                           callstack.stack.Add(line);
                       }
                   }
                }

                List<string> listLine = new List<string>();
                callstackList.Sort(delegate(callStackAllocation p1, callStackAllocation p2) { return p2.allocationSize.CompareTo(p1.allocationSize); });
                foreach (callStackAllocation callstackAllocation in callstackList)
                {
                    listLine.Add("Allocation size: " + callstackAllocation.allocationSize);
                    callstackAllocation.dump(ref listLine);
                }

                listBoxCallstackAllocation.Items.Clear();

                
                foreach (string s in listLine)
                    listBoxCallstackAllocation.Items.Add(s);
            }


         
            /*
            for (UInt32 index = 0; index < countAllocation; ++index)
            {
                blob.extract(ref _size);

                //callstack

                blob.extract(ref callstackSize);


                for (UInt32 cb = 0; cb < callstackSize; ++cb)
                {
                    blob.extract(ref filename);
                    blob.extract(ref symbolname);
                    blob.extract(ref line);
                    tmp = filename + "(" + line.ToString() + "):" + symbolname + "\r\n";

                    globaltext += tmp;1
                }

                globaltext += "\r\n";
            }*/
        }
        
        private void sendCommand(string _command, params object[] args)
        {
            //call back
            callbackAction cbAction = (callbackAction)Tag;
            if (cbAction != null)
                cbAction(GetType().ToString(), _command, args);
        }

        private void MemoryEvent_Load(object sender, EventArgs e)
        {
            sendCommand("dump_memoryevents", null);
        }

        private void checkboxlistEvent_SelectedIndexChanged(object sender, EventArgs e)
        {
            //look for the appropriate event
            int index = checkboxlistEvent.SelectedIndex;
            if (index == -1)
                return;

            if (checkboxlistEvent.GetItemCheckState(index) == CheckState.Checked)
            {
                sendCommand("dump_specificevent", checkboxlistEvent.Items[index].ToString());
            }
            //checkboxlistEvent.SetItemCheckState(checkboxlistEvent.SelectedIndex, CheckState.Unchecked);
        }

        private void textBoxCallstackView_TextChanged(object sender, EventArgs e)
        {
            //get the first selected line and open visual
            //if (textBoxCallstackView.s
              
            
        }

        private void listBoxCallstackAllocation_SelectedIndexChanged(object sender, EventArgs e)
        {
            //get the first selected line and open visual
            if (listBoxCallstackAllocation.SelectedIndex == -1)
                return;

            string line = (string) listBoxCallstackAllocation.Items[listBoxCallstackAllocation.SelectedIndex];
       
            //get filename
            int index = line.IndexOf('(');

            if (index !=-1)
            {
                string filename     = line.Substring(0, index);
                int indexEnd = line.IndexOf(')');
                if (indexEnd != -1)
                {
                    string linenumber = line.Substring(index + 1, indexEnd - index-1);
                    MemoryUtils.openFileAtLine(filename, linenumber);
                }
                
            }

        }

        private void buildEventsHierarchy(ref TreeNode currentNode, ref List<UInt32> tagList)
        {
            while (currentNode!=null)
            {
                NodeInfo nodeInfo = (NodeInfo)currentNode.Tag;
                UInt32 parentTag = nodeInfo.parentTag;
                if (nodesTable[parentTag] != null)
                {
                    currentNode = (TreeNode)nodesTable[parentTag];
                    buildEventsHierarchy(ref currentNode, ref tagList);

                }
                else
                {
                    currentNode = null;
                }
                
                tagList.Add(nodeInfo.eventTag);
            }
        }

        private void treeViewEvent_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            //check the selected node

            if (treeViewEvent.SelectedNode != null)
            {
                //send the request for this node
                //build the hierarchy
                TreeNode treeNode = treeViewEvent.SelectedNode;
                List<UInt32>  tagList = new List<UInt32>();

                buildEventsHierarchy(ref treeNode, ref tagList);

                if (tagList.Count>0)
                {
                    UInt32[] array = new UInt32[tagList.Count];

                    UInt32 index = 0;
                    foreach (UInt32 tag in tagList)
                        array[index++] = tag;
                    

                    sendCommand("dump_specificevent", array);
                }
            }
        }
    }
}