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/* $Id$ */

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/** @file currency.h */

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#ifndef CURRENCY_H

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#define CURRENCY_H

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#include "date_type.h"

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#include "strings_type.h"

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enum {

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	CF_NOEURO = 0,

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	CF_ISEURO = 1,

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	NUM_CURRENCY = 28,

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	CUSTOM_CURRENCY_ID = NUM_CURRENCY - 1

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};

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struct CurrencySpec {

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	uint16 rate;

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	char separator;

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	Year to_euro;

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	char prefix[16];

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	char suffix[16];

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	/**

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	 * The currency symbol is represented by two possible values, prefix and suffix

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	 * Usage of one or the other is determined by symbol_pos.

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	 * 0 = prefix

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	 * 1 = suffix

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	 * 2 = both : Special case only for custom currency.

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	 *            It is not a spec from Newgrf,

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	 *            rather a way to let users do what they want with custom curency

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	 */

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	byte symbol_pos;

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	StringID name;

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};

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extern CurrencySpec _currency_specs[NUM_CURRENCY];

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// XXX small hack, but makes the rest of the code a bit nicer to read

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#define _custom_currency (_currency_specs[CUSTOM_CURRENCY_ID])

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#define _currency ((const CurrencySpec*)&_currency_specs[_opt_ptr->currency])

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uint GetMaskOfAllowedCurrencies();

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void CheckSwitchToEuro();

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void ResetCurrencies(bool preserve_custom = true);

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StringID* BuildCurrencyDropdown();

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byte GetNewgrfCurrencyIdConverted(byte grfcurr_id);

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#endif /* CURRENCY_H */