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/* $Id$ */

/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file ai_scanner.hpp declarations of the class for AI scanner */

#ifndef AI_SCANNER_HPP
#define AI_SCANNER_HPP

#include "../script/script_scanner.hpp"
#include "ai.hpp"

/**
 * Class that scans for available AIs.
 */
class AIScanner : public ScriptScanner {
public:
	AIScanner();
	~AIScanner();

	/**
	 * Find a library by name + version.
	 * @param library The name of the library to find.
	 * @param version The prefered version of the library.
	 * @return The library if found, NULL otherwise.
	 */
	AILibrary *FindLibrary(const char *library, int version);

	/**
	 * Register a library to be put in the available list.
	 */
	void RegisterLibrary(class AILibrary *library);

	/**
	 * Register an AI to be put in the available list.
	 */
	void RegisterAI(class AIInfo *info);

	/**
	 * Register the dummy AI.
	 * @param info The dummy AI that.
	 */
	void SetDummyAI(class AIInfo *info) { this->info_dummy = info; }

	/**
	 * Select a Random AI.
	 */
	class AIInfo *SelectRandomAI() const;

	/**
	 * Find an AI by name.
	 */
	class AIInfo *FindInfo(const char *name, int version, bool force_exact_match);

	/**
	 * Get the list of available AIs for the console.
	 */
	char *GetAIConsoleList(char *p, const char *last, bool newest_only) const;

	/**
	 * Get the list of available AI Libraries for the console.
	 */
	char *GetAIConsoleLibraryList(char *p, const char *last) const;

	/**
	 * Get the list of all registered AIs.
	 */
	const AIInfoList *GetAIInfoList() { return &this->info_list; }

	/**
	 * Get the list of the newest version of all registered AIs.
	 */
	const AIInfoList *GetUniqueAIInfoList() { return &this->info_single_list; }

	/**
	 * Rescan the AI dir for scripts.
	 */
	void RescanAIDir();

#if defined(ENABLE_NETWORK)
	bool HasAI(const struct ContentInfo *ci, bool md5sum);
#endif
private:
	typedef std::map<const char *, class AILibrary *, StringCompare> AILibraryList; ///< Type for the list of libraries.

	/**
	 * Scan the AI dir for scripts.
	 */
	void ScanAIDir();

	/**
	 * Reset all allocated lists.
	 */
	void Reset();

	AIInfo *info_dummy;          ///< The dummy AI.
	AIInfoList info_list;        ///< The list of all AIs.
	AIInfoList info_single_list; ///< The list of all unique AIs, based on shortname. The best AI (highest version) is shown.
	AILibraryList library_list;  ///< The list of libraries.
};

#endif /* AI_SCANNER_HPP */