/*
 * 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 script_storage.hpp Defines ScriptStorage and includes all files required for it. */

#ifndef SCRIPT_STORAGE_HPP
#define SCRIPT_STORAGE_HPP

#include "../signs_func.h"
#include "../vehicle_func.h"
#include "../road_type.h"
#include "../group.h"
#include "../goal_type.h"
#include "../story_type.h"
#include "../3rdparty/robin_hood/robin_hood.h"

#include "script_log_types.hpp"

#include "table/strings.h"
#include <vector>

/**
 * The callback function for Mode-classes.
 */
typedef bool (ScriptModeProc)();

/**
 * The callback function for Async Mode-classes.
 */
typedef bool (ScriptAsyncModeProc)();

/**
 * The storage for each script. It keeps track of important information.
 */
class ScriptStorage {
friend class ScriptObject;
private:
	ScriptModeProc *mode;                    ///< The current build mode we are int.
	class ScriptObject *mode_instance;       ///< The instance belonging to the current build mode.
	ScriptAsyncModeProc *async_mode;         ///< The current command async mode we are in.
	class ScriptObject *async_mode_instance; ///< The instance belonging to the current command async mode.
	CompanyID root_company;                  ///< The root company, the company that the script really belongs to.
	CompanyID company;                       ///< The current company.

	uint delay;                      ///< The ticks of delay each DoCommand has.
	bool allow_do_command;           ///< Is the usage of DoCommands restricted?

	CommandCost costs;               ///< The costs the script is tracking.
	Money last_cost;                 ///< The last cost of the command.
	uint32_t last_result;            ///< The last result data of the command.
	uint last_error;                 ///< The last error of the command.
	bool last_command_res;           ///< The last result of the command.

	TileIndex last_tile;             ///< The last tile passed to a command.
	uint32_t last_p1;                ///< The last p1 passed to a command.
	uint32_t last_p2;                ///< The last p2 passed to a command.
	uint64_t last_p3;                ///< The last p3 passed to a command.
	uint32_t last_cmd;               ///< The last cmd passed to a command.

	VehicleID new_vehicle_id;        ///< The ID of the new Vehicle.
	SignID new_sign_id;              ///< The ID of the new Sign.
	GroupID new_group_id;            ///< The ID of the new Group.
	GoalID new_goal_id;              ///< The ID of the new Goal.
	StoryPageID new_story_page_id;   ///< The ID of the new StoryPage.
	StoryPageID new_story_page_element_id; ///< The ID of the new StoryPageElement.

	std::vector<int> callback_value; ///< The values which need to survive a callback.

	RoadType road_type;              ///< The current roadtype we build.
	RailType rail_type;              ///< The current railtype we build.

	void *event_data;                ///< Pointer to the event data storage.
	ScriptLogTypes::LogData log_data;///< Log data storage.

	robin_hood::unordered_node_set<std::string> seen_unique_log_messages; ///< Messages which have already been logged once and don't need to be logged again

public:
	ScriptStorage() :
		mode              (nullptr),
		mode_instance     (nullptr),
		async_mode        (nullptr),
		async_mode_instance (nullptr),
		root_company      (INVALID_OWNER),
		company           (INVALID_OWNER),
		delay             (1),
		allow_do_command  (true),
		/* costs (can't be set) */
		last_cost         (0),
		last_result       (0),
		last_error        (STR_NULL),
		last_command_res  (true),
		last_tile         (INVALID_TILE),
		last_p1           (0),
		last_p2           (0),
		last_p3           (0),
		last_cmd          (CMD_END),
		new_vehicle_id    (0),
		new_sign_id       (0),
		new_group_id      (0),
		new_goal_id       (0),
		new_story_page_id (0),
		new_story_page_element_id(0),
		/* calback_value (can't be set) */
		road_type         (INVALID_ROADTYPE),
		rail_type         (INVALID_RAILTYPE),
		event_data        (nullptr)
	{ }

	~ScriptStorage();
};

#endif /* SCRIPT_STORAGE_HPP */