//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//
// copyright            : (C) 2008 by Eran Ifrah
// file name            : cscopedbbuilderthread.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 "cscopestatusmessage.h"
#include "procutils.h"
#include "dirsaver.h"
#include "wx/filefn.h"
#include "cscopedbbuilderthread.h"
#include "cscope.h"

int wxEVT_CSCOPE_THREAD_DONE            = wxNewId();
int wxEVT_CSCOPE_THREAD_UPDATE_STATUS   = wxNewId();

CscopeDbBuilderThread::CscopeDbBuilderThread()
{
}

CscopeDbBuilderThread::~CscopeDbBuilderThread()
{
}

void CscopeDbBuilderThread::ProcessRequest(ThreadRequest *request)
{
	CscopeRequest *req = (CscopeRequest*)request;

	//change dir to the workspace directory
	DirSaver ds;

	wxSetWorkingDirectory(req->GetWorkingDir());
	SendStatusEvent( _("Executing cscope..."), 10, req->GetFindWhat(), req->GetOwner() );

	//notify the database creation process as completed
	wxArrayString output;

	//set environment variables required by cscope
	wxSetEnv(wxT("TMPDIR"), wxFileName::GetTempDir());
	ProcUtils::SafeExecuteCommand(req->GetCmd(), output);
	SendStatusEvent( _("Parsing results..."), 50, wxEmptyString, req->GetOwner() );

	CscopeResultTable *result = ParseResults( output );
	SendStatusEvent( _("Done"), 100, wxEmptyString, req->GetOwner() );

	// send status message
	SendStatusEvent(req->GetEndMsg(), 100, wxEmptyString, req->GetOwner());

	// send the results
	wxCommandEvent e(wxEVT_CSCOPE_THREAD_DONE);
	e.SetClientData(result);
	req->GetOwner()->AddPendingEvent(e);
}

CscopeResultTable* CscopeDbBuilderThread::ParseResults(const wxArrayString &output)
{
	CscopeResultTable *results = new CscopeResultTable();
	for (size_t i=0; i< output.GetCount(); i++) {
		//parse each line
		wxString line = output.Item(i);
		CscopeEntryData data;

		//first is the file name
		line = line.Trim().Trim(false);
		//skip errors
		if(line.StartsWith(wxT("cscope:"))){continue;}

		wxString file = line.BeforeFirst(wxT(' '));
		data.SetFile(file);
		line = line.AfterFirst(wxT(' '));

		//next is the scope
		line = line.Trim().Trim(false);
		wxString scope = line.BeforeFirst(wxT(' '));
		line = line.AfterFirst(wxT(' '));
		data.SetScope( scope );

		//next is the line number
		line = line.Trim().Trim(false);
		long nn;
		wxString line_number = line.BeforeFirst(wxT(' '));
		line_number.ToLong( &nn );
		data.SetLine( nn );
		line = line.AfterFirst(wxT(' '));

		//the rest is the pattern
		wxString pattern = line;
		data.SetPattern(pattern);

		//insert the result
		CscopeResultTable::const_iterator iter = results->find(data.GetFile());
		std::vector< CscopeEntryData > *vec(NULL);
		if (iter != results->end()) {
			//this file already exist, append the result
			vec = iter->second;
		} else {
			vec = new std::vector< CscopeEntryData >();
			//add it to the map
			(*results)[data.GetFile()] = vec;
		}
		vec->push_back( data );
	}
	return results;
}

void CscopeDbBuilderThread::SendStatusEvent(const wxString &msg, int percent, const wxString &findWhat, wxEvtHandler *owner)
{
	wxCommandEvent e(wxEVT_CSCOPE_THREAD_UPDATE_STATUS);
	CScopeStatusMessage *statusMsg = new CScopeStatusMessage();
	statusMsg->SetMessage(msg);
	statusMsg->SetPercentage(percent);
	statusMsg->SetFindWhat(findWhat);
	e.SetClientData(statusMsg);

	owner->AddPendingEvent(e);
}
