/**
 * \file ControlLog.cpp
 * This file is part of LyX, the document processor.
 * Licence details can be found in the file COPYING.
 *
 * \author John Levon
 * \author Angus Leeming
 *
 * Full author contact details are available in file CREDITS.
 */

#include <config.h>

#include "ControlLog.h"

#include "gettext.h"
#include "Lexer.h"

#include <sstream>
#include <fstream>

using std::istringstream;
using std::ostream;
using std::string;

namespace lyx {

using support::FileName;

namespace frontend {

ControlLog::ControlLog(Dialog & parent)
	: Dialog::Controller(parent),
	  type_(LatexLog)
{}


bool ControlLog::initialiseParams(string const & data)
{
	istringstream is(data);
	Lexer lex(0,0);
	lex.setStream(is);

	string logtype, logfile;
	lex >> logtype;
	if (lex) {
		lex.next(true);
		logfile = lex.getString();
	}
	if (!lex)
		// Parsing of the data failed.
		return false;

	if (logtype == "latex")
		type_ = LatexLog;
	else if (logtype == "literate")
		type_ = LiterateLog;
	else if (logtype == "lyx2lyx")
		type_ = Lyx2lyxLog;
	else if (logtype == "vc")
		type_ = VCLog;
	else
		return false;

	logfile_ = FileName(logfile);
	return true;
}


void ControlLog::clearParams()
{
	logfile_.erase();
}


docstring const ControlLog::title() const
{
	docstring t;
	switch (type_) {
	case LatexLog:
		t = _("LaTeX Log");
		break;
	case LiterateLog:
		t = _("Literate Programming Build Log");
		break;
	case Lyx2lyxLog:
		t = _("lyx2lyx Error Log");
		break;
	case VCLog:
		t = _("Version Control Log");
		break;
	}
	return t;
}


void ControlLog::getContents(std::ostream & ss) const
{
	std::ifstream in(logfile_.toFilesystemEncoding().c_str());

	bool success = false;

	// FIXME UNICODE
	// Our caller interprets the file contents as UTF8, but is that
	// correct?
	if (in) {
		ss << in.rdbuf();
		success = ss.good();
	}

	if (success)
		return;

	switch (type_) {
	case LatexLog:
		ss << lyx::to_utf8(_("No LaTeX log file found."));
		break;
	case LiterateLog:
		ss << lyx::to_utf8(_("No literate programming build log file found."));
		break;
	case Lyx2lyxLog:
		ss << lyx::to_utf8(_("No lyx2lyx error log file found."));
		break;
	case VCLog:
		ss << lyx::to_utf8(_("No version control log file found."));
		break;
	}
}

} // namespace frontend
} // namespace lyx