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+/*
+ *  Quackle -- Crossword game artificial intelligence and analysis tool
+ *  Copyright (C) 2005-2006 Jason Katz-Brown and John O'Laughlin.
+ *
+ *  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.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  
+ *  02110-1301  USA
+ */
+
+#ifndef QUACKLE_DATAMANAGER_H
+#define QUACKLE_DATAMANAGER_H
+
+#include <string>
+
+#include "playerlist.h"
+
+using namespace std;
+
+#define QUACKLE_DATAMANAGER Quackle::DataManager::self()
+#define QUACKLE_DATAMANAGER_EXISTS Quackle::DataManager::exists()
+#define QUACKLE_EVALUATOR Quackle::DataManager::self()->evaluator()
+#define QUACKLE_PARAMETERS Quackle::DataManager::self()->parameters()
+#define QUACKLE_ALPHABET_PARAMETERS Quackle::DataManager::self()->alphabetParameters()
+#define QUACKLE_BOARD_PARAMETERS Quackle::DataManager::self()->boardParameters()
+#define QUACKLE_LEXICON_PARAMETERS Quackle::DataManager::self()->lexiconParameters()
+#define QUACKLE_STRATEGY_PARAMETERS Quackle::DataManager::self()->strategyParameters()
+#define QUACKLE_COMPUTER_PLAYERS Quackle::DataManager::self()->computerPlayers()
+
+namespace Quackle
+{
+
+// General singleton type that will be around whenever
+// you use libquackle.
+// It provides access to lexica (todo), random numbers,
+// and all parameters for a game
+
+class AlphabetParameters;
+class BoardParameters;
+class Evaluator;
+class GameParameters;
+class LexiconParameters;
+class PlayerList;
+class StrategyParameters;
+
+class DataManager
+{
+public:
+	// sets up singleton, seeds random number generator,
+	// and creates default parameter instances
+	DataManager();
+
+	~DataManager();
+
+	static DataManager *self();
+	static bool exists();
+
+	// Are we in shape to run a game?
+	// Makes sure there's a lexicon at least.
+	bool isGood() const;
+
+	Evaluator *evaluator();
+	void setEvaluator(Evaluator *evaluator);
+
+	// game and board parameter objects are owned and deleted by
+	// this data manager
+	GameParameters *parameters();
+	void setParameters(GameParameters *parameters);
+
+	AlphabetParameters *alphabetParameters();
+	void setAlphabetParameters(AlphabetParameters *alphabetParameters);
+
+	BoardParameters *boardParameters();
+	void setBoardParameters(BoardParameters *boardParameters);
+
+	LexiconParameters *lexiconParameters();
+	void setLexiconParameters(LexiconParameters *lexiconParameters);
+
+	StrategyParameters *strategyParameters();
+	void setStrategyParameters(StrategyParameters *strategyParameters);
+
+	// When the data manager dies or setComputerPlayers is called, it deletes
+	// all of the computer players pointed to by the players in this list. The
+	// players' names are the names of the computer players, and the players'
+	// ids are the ids of the computer players. The last player on the list
+	// should be considered the best player.
+	const PlayerList &computerPlayers() const;
+	void setComputerPlayers(const PlayerList &playerList);
+	void cleanupComputerPlayers();
+
+	// Find a file at datadir/subdir/lexicon/file.
+	// If this doesn't exist, tries backupLexicon instead of lexicon.
+	// Returns empty string if the file is not found.
+	string findDataFile(const string &subDirectory, const string &lexicon, string file);
+
+	// Find a file at datadir/subdir/file.
+	// Returns empty string if the file is not found.
+	string findDataFile(const string &subDirectory, string file);
+
+	// returns similarly-named file
+	string makeDataFilename(const string &subDirectory, const string &lexicon, string file);
+	string makeDataFilename(const string &subDirectory, string file);
+
+	void setBackupLexicon(string backupLexicon) { m_backupLexicon = backupLexicon; }
+	string backupLexicon() { return m_backupLexicon; }
+
+	void setDataDirectory(string directory) { m_dataDirectory = directory; }
+	string dataDirectory() { return m_dataDirectory; }
+
+	void seedRandomNumbers(unsigned int seed);
+	int randomNumber();
+
+private:
+	static DataManager *m_self;
+
+	bool fileExists(const string &filename);
+
+	string m_dataDirectory;
+
+	// lexicon that has all data files
+	string m_backupLexicon;
+
+	Evaluator *m_evaluator;
+	GameParameters *m_parameters;
+	AlphabetParameters *m_alphabetParameters;
+	BoardParameters *m_boardParameters;
+	LexiconParameters *m_lexiconParameters;
+	StrategyParameters *m_strategyParameters;
+
+	PlayerList m_computerPlayers;
+};
+
+inline DataManager *DataManager::self()
+{
+	return m_self;
+}
+
+inline bool DataManager::exists()
+{
+	return m_self != 0;
+}
+
+inline Evaluator *DataManager::evaluator()
+{
+	return m_evaluator;
+}
+
+inline GameParameters *DataManager::parameters()
+{
+	return m_parameters;
+}
+
+inline AlphabetParameters *DataManager::alphabetParameters()
+{
+	return m_alphabetParameters;
+}
+
+inline BoardParameters *DataManager::boardParameters()
+{
+	return m_boardParameters;
+}
+
+inline LexiconParameters *DataManager::lexiconParameters()
+{
+	return m_lexiconParameters;
+}
+
+inline StrategyParameters *DataManager::strategyParameters()
+{
+	return m_strategyParameters;
+}
+
+inline const PlayerList &DataManager::computerPlayers() const
+{
+	return m_computerPlayers;
+}
+
+}
+
+#endif