//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//
// copyright            : (C) 2014 Eran Ifrah
// file name            : dotwriter.cpp
//
// -------------------------------------------------------------------------
// A
//              _____           _      _     _ _
//             /  __ \         | |    | |   (_) |
//             | /  \/ ___   __| | ___| |    _| |_ ___
//             | |    / _ \ / _  |/ _ \ |   | | __/ _ )
//             | \__/\ (_) | (_| |  __/ |___| | ||  __/
//              \____/\___/ \__,_|\___\_____/_|\__\___|
//
//                                                  F i l e
//
//    This program is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////

#include "dotwriter.h"
#include <wx/strconv.h>
#include <wx/file.h>
#include <wx/msgdlg.h>
#include <wx/math.h>
#include <wx/regex.h>
#include <math.h>

DotWriter::DotWriter()
{
    begin_graph = wxT("digraph\n{");
    end_graph = wxT("}\n");
    fontname = wxT("Arial");
    style = wxT("filled,rounded");
    shape = wxT("box");
    cwhite = wxT("white");
    cblack = wxT("black");
    hnode = wxT("");
    dedge = wxT("");
    hedge = wxT("");
    dlabel = wxT("");
    graph = wxT("");
    // m_OutputString = wxT("");
    mlines = NULL;
    dwcn = 0;
    dwce = 0;
    dwtn = 0;
    dwte = 0;
    m_writedotfileFlag = false;
    dwhideparams = false;
    dwhidenamespaces = false;
    dwstripparams = false;
}

DotWriter::~DotWriter() {}

void DotWriter::SetLineParser(LineParserList* pLines) //, int numOfLines)
{
    mlines = pLines;
}

void DotWriter::SetDotWriterFromDialogSettings(IManager* mgr)
{
    mgr->GetConfigTool()->ReadObject(wxT("CallGraph"), &confData);
    dwcn = confData.GetColorsNode();
    dwce = confData.GetColorsEdge();
    dwtn = confData.GetTresholdNode();
    dwte = confData.GetTresholdEdge();
    dwhideparams = confData.GetHideParams();
    dwhidenamespaces = confData.GetHideNamespaces();
    dwstripparams = confData.GetStripParams();
}

void DotWriter::SetDotWriterFromDetails(int colnode,
                                        int coledge,
                                        int thrnode,
                                        int thredge,
                                        bool hideparams,
                                        bool stripparams,
                                        bool hidenamespaces)
{
    dwcn = colnode;
    dwce = coledge;
    dwtn = thrnode;
    dwte = thredge;
    dwhideparams = hideparams;
    dwstripparams = stripparams;
    dwhidenamespaces = hidenamespaces;
}

void DotWriter::WriteToDotLanguage()
{
    int pl_index = 0;
    float pl_time = 0;
    bool is_node = false;
    wxArrayInt index_pl_nodes;

    if(mlines == NULL) return;

    graph = wxT("graph [ranksep=\"0.25\", fontname=") + fontname + wxT(", nodesep=\"0.125\"];");

    hnode = wxT("node [label=\"\\N\", fontsize=\"9.00\", fontname=") + fontname + wxT(", style=\"") + style +
            wxT("\", height=0, width=0, shape=") + shape + wxT(", fontcolor=") + cwhite + wxT("];");

    hedge = wxT("edge [fontname=") + fontname + wxT("];");

    // graph []; -- not used

    m_OutputString += begin_graph + wxT("\n") + graph + wxT("\n") + hnode + wxT("\n") + hedge + wxT("\n");

    LineParserList::compatibility_iterator it = mlines->GetFirst();

    while(it) {
        LineParser* line = it->GetData();

        if(line->pline && wxRound(line->time) >= dwtn) {
            is_node = true;
            index_pl_nodes.Add(line->index);
            dlabel = wxString::Format(wxT("%i"), line->index);
            dlabel += wxT(" [label=\"");
            dlabel += OptionsShortNameAndParameters(line->name);
            dlabel += wxT("\\n");
            dlabel += wxString::Format(wxT("%.2f"), line->time);
            dlabel += wxT("% \\n");
            dlabel += wxT("(");
            // self or children if have function childern line
            // if(line->self >= line->childern)
            //	dlabel += wxString::Format(wxT("%.2f"), line->self);
            // else
            dlabel += wxString::Format(wxT("%.2f"), line->self + line->children);
            dlabel += wxT("s)");
            dlabel += wxT("\\n");
            if(line->called0 != -1) dlabel += wxString::Format(wxT("%i"), line->called0) + wxT("x");
            // if(line->recursive)
            //	dlabel += wxT(" (") + wxString::Format(wxT("%i"),line->called0 + line->called1) + wxT("x)");
            dlabel += wxT("\",fontcolor=\"");
            dlabel += DefineColorForLabel(ReturnIndexForColor(line->time, dwcn));
            dlabel += wxT("\", color=\"");
            dlabel += DefineColorForNodeEdge(ReturnIndexForColor(line->time, dwcn));
            //
            dlabel += wxT("\"];"); //, fontsize=\"10.00\"
            //
            m_OutputString += dlabel + wxT("\n");
            //
            dlabel.Clear();
        }
        it = it->GetNext();
    }

    it = mlines->GetFirst();

    float max_time = -2;

    while(it) {
        LineParser* line = it->GetData();

        if(max_time < line->time) max_time = line->time;

        if(line->pline) {
            pl_index = line->index; // index for primary node
            pl_time = line->time;   // time for primary node
        }

        if(line->child && IsInArray(line->nameid, index_pl_nodes) && IsInArray(pl_index, index_pl_nodes) &&
           (wxRound(pl_time) >= dwte)) {
            dedge = wxString::Format(wxT("%i"), pl_index);
            dedge += wxT(" -> ");
            dedge += wxString::Format(wxT("%i"), line->nameid);
            dedge += wxT(" [color=\"");
            dedge += DefineColorForNodeEdge(ReturnIndexForColor(pl_time, dwce)); // color by primary node
            dedge += wxT("\", label=\"");
            // if(line->self != -1)
            // dedge += wxString::Format(wxT("%.2f"),line->self) + wxT("%");
            // dedge += wxT("\\n");
            dedge += wxString::Format(wxT("%i"), line->called0);
            dedge += wxT("x");
            dedge += wxT("\" ,arrowsize=\"0.50\", fontsize=\"9.00\", fontcolor=\"");
            dedge += cblack;
            dedge += wxT("\", penwidth=\"2.00\"];"); // labeldistance=\"4.00\",
            //
            m_OutputString += dedge + wxT("\n");
            //
            dedge.Clear();
        }
        it = it->GetNext();
    }
    m_OutputString += end_graph;

    if(!is_node) { // if the call graph is empty create new graph with label node
        m_OutputString = wxT("digraph e {0 [label=");
        m_OutputString +=
            wxString::Format(_("\"The call-graph is empty; the node threshold ceiling is %d !\""), wxRound(max_time));
        m_OutputString += wxT(", shape=none, height=2, width=2, fontname=Arial, fontsize=14.00];}");
    }
}

bool DotWriter::SendToDotAppOutputDirectory(const wxString& dot_fn)
{ // (re)write dot.txt file
    wxFile pFile(dot_fn, wxFile::write);

    bool ok = pFile.Write(m_OutputString);

    return ok;
}

wxString DotWriter::OptionsShortNameAndParameters(const wxString& name)
{
    if((dwhidenamespaces || dwhideparams) && name.Contains(wxT('(')) && name.Contains(wxT(')'))) {
        wxString out = name;

        if(dwhidenamespaces) {
            wxRegEx re;
            // remove STL
            int start, end;
            while(GetOuterTemplate(out, &start, &end)) {
                out.Replace(out.Mid(start, end - start + 1), wxT("%STL%"));
            }
            out.Replace(wxT("%STL%"), wxT("<...>"));
            // remove namespace
            if(re.Compile(wxT("::[a-zA-Z_~]+[a-zA-Z_0-9<!=\\-\\+\\*/%]*\\(.*\\)[ ]*(const)?[ ]*$"), wxRE_ADVANCED) &&
               re.Matches(name)) {
                out = re.GetMatch(name);
                out.Replace(wxT("::"), wxEmptyString);
            }
        }

        if(dwhideparams) {
            out = out.BeforeFirst(wxT('('));
            out += wxT("()"); // for function return just ()
        }

        return out;

    } else if(name.Contains(wxT('(')) && name.Contains(wxT(')')) && dwstripparams) {
        wxString out = name.BeforeFirst(wxT('('));
        wxString sub = name.AfterFirst(wxT('(')).BeforeFirst(wxT(')'));
        if(sub.IsEmpty()) {
            out += wxT("\\n(\\n)");
            return out;
        } else if(sub.Contains(wxT(","))) {
            sub.Replace(wxT(","), wxT(",\\n"));
            out += wxT("\\n(\\n") + sub + wxT("\\n)");
            return out;
        } else {
            out += wxT("\\n(\\n") + sub + wxT("\\n)");
            return out;
        }
    } else
        return name;
}

int DotWriter::ReturnIndexForColor(float time, int dwc)
{
    int index = 0;
    struct colorRange {
        int downIndex;
        int upIndex;
        int indexColor;
    };

    colorRange* colorSelect;
    colorSelect = new colorRange[dwc];

    if(dwc == 1) {
        colorSelect[0].downIndex = 0;
        colorSelect[0].upIndex = 100;
        colorSelect[0].indexColor = 0;
    } else if(dwc == 2) {
        colorSelect[0].downIndex = 0;
        colorSelect[0].upIndex = 50;
        colorSelect[0].indexColor = 0;
        colorSelect[1].downIndex = 51;
        colorSelect[1].upIndex = 100;
        colorSelect[1].indexColor = 9;
    } else if(dwc > 2 && dwc < 11) {
        int numInterval = dwc - 1;
        float stepInterval = 8.0 / (float)numInterval;
        float lenInterval = 100.0 / (float)dwc;
        lenInterval = round(lenInterval);
        int afterModulo = 8 % numInterval;
        float restAdd = (float)afterModulo / numInterval;
        float addValue = 0.0;

        for(int i = 0; i < dwc; i++) {
            addValue += restAdd;
            if(i == 0) {
                colorSelect[i].downIndex = 0;
                colorSelect[i].upIndex = (int)lenInterval;
                colorSelect[i].indexColor = 0;
            } else if(i == (dwc - 1)) {
                colorSelect[i].downIndex = colorSelect[i - 1].upIndex + 1;
                colorSelect[i].upIndex = 100;
                colorSelect[i].indexColor = 9;
            } else if(i > 0 && i < (dwc - 1)) {
                int addValueNext = 0;
                if(0.8 < addValue && addValue < 1.2) {
                    addValueNext = 1;
                    addValue = 0;
                }
                colorSelect[i].downIndex = colorSelect[i - 1].upIndex + 1;
                colorSelect[i].upIndex = colorSelect[i - 1].upIndex + (int)lenInterval;
                colorSelect[i].indexColor =
                    (int)round((float)colorSelect[i - 1].indexColor + stepInterval) + addValueNext;
            }
        }
    }

    for(int i = 0; i < dwc; i++) {
        if((int)colorSelect[i].downIndex <= (int)time && (int)time <= (int)colorSelect[i].upIndex) {
            index = (int)colorSelect[i].indexColor;
            break;
        }
    }
    wxDELETEA(colorSelect);
    return index;
}

wxString DotWriter::DefineColorForNodeEdge(int index)
{
    wxString colors[10] = { wxT("#006837"), wxT("#1a9850"), wxT("#66bd63"), wxT("#a6d96a"), wxT("#d9ef8b"),
                            wxT("#fee08b"), wxT("#fdae61"), wxT("#f46d43"), wxT("#d73027"), wxT("#a50026") };
    return colors[index];
}

bool DotWriter::IsInArray(int index, const wxArrayInt& arr)
{
    for(unsigned int i = 0; i < arr.GetCount(); i++) {
        if(arr.Item(i) == index) return true;
    }
    return false;
}

wxString DotWriter::DefineColorForLabel(int index)
{
    if((index < 3) || (index > 6)) {
        return cwhite;
    } else {
        return cblack;
    }
}

bool DotWriter::GetOuterTemplate(const wxString& txt, int* start, int* end)
{
    int cnt = 0;
    int pos = 0;

    for(wxString::const_iterator it = txt.begin(); it != txt.end(); ++it) {
        if(*it == wxT('<')) {
            if(cnt == 0) *start = pos;
            cnt++;
        } else if(*it == wxT('>')) {
            cnt--;
            if(cnt == 0) *end = pos;
            return true;
        }
        pos++;
    }

    *start = -1;
    *end = -1;
    return false;
}
