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/* $Id$ */

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#include "stdafx.h"

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#include "openttd.h"

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#include "currency.h"

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#include "news.h"

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#include "variables.h"

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#include "table/strings.h"

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// exchange rate    prefix

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// |  separator        |     postfix

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// |   |    Euro year  |       |

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// |   |    |          |       |

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CurrencySpec _currency_specs[] = {

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	{    1, ',', CF_NOEURO, "\xA3", ""     }, // british pounds

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	{    2, ',', CF_NOEURO, "$",    ""     }, // us dollars

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	{    2, ',', CF_ISEURO, "¤",    ""     }, // Euro

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	{  200, ',', CF_NOEURO, "\xA5", ""     }, // yen

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	{   19, ',', 2002,      "",     " S."  }, // austrian schilling

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	{   57, ',', 2002,      "BEF ", ""     }, // belgian franc

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	{    2, ',', CF_NOEURO, "CHF ", ""     }, // swiss franc

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	{   50, ',', CF_NOEURO, "",     " Kc"  }, // czech koruna // TODO: Should use the "c" with an upside down "^"

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	{    4, '.', 2002,      "DM ",  ""     }, // deutsche mark

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	{   10, '.', CF_NOEURO, "",     " kr"  }, // danish krone

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	{  200, '.', 2002,      "Pts ", ""     }, // spanish pesetas

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	{    8, ',', 2002,      "",     " mk"  }, // finnish markka

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	{   10, '.', 2002,      "FF ",  ""     }, // french francs

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	{  480, ',', 2002,      "",     "Dr."  }, // greek drachma

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	{  376, ',', 2002,      "",     " Ft"  }, // hungarian forint

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	{  130, '.', CF_NOEURO, "",     " Kr"  }, // icelandic krona

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	{ 2730, ',', 2002,      "",     " L."  }, // italian lira

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	{    3, ',', 2002,      "NLG ", ""     }, // dutch gulden

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	{   11, '.', CF_NOEURO, "",     " Kr"  }, // norwegian krone

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	{    6, ' ', CF_NOEURO, "",     " zl"  }, // polish zloty

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	{    6, '.', CF_NOEURO, "",     " Lei" }, // romanian Lei

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	{    5, ' ', CF_NOEURO, "",     " p"   }, // russian rouble

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	{   13, '.', CF_NOEURO, "",     " Kr"  }, // swedish krona

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	{    1, ' ', CF_NOEURO, "",     ""     }, // custom currency

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};

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const StringID _currency_string_list[] = {

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	STR_CURR_GBP,

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	STR_CURR_USD,

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	STR_CURR_EUR,

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	STR_CURR_YEN,

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	STR_CURR_ATS,

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	STR_CURR_BEF,

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	STR_CURR_CHF,

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	STR_CURR_CZK,

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	STR_CURR_DEM,

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	STR_CURR_DKK,

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	STR_CURR_ESP,

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	STR_CURR_FIM,

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	STR_CURR_FRF,

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	STR_CURR_GRD,

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	STR_CURR_HUF,

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	STR_CURR_ISK,

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	STR_CURR_ITL,

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	STR_CURR_NLG,

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	STR_CURR_NOK,

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	STR_CURR_PLN,

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	STR_CURR_ROL,

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	STR_CURR_RUR,

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	STR_CURR_SEK,

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	STR_CURR_CUSTOM,

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	INVALID_STRING_ID

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};

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// NOTE: Make sure both lists are in the same order

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// + 1 string list terminator

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assert_compile(lengthof(_currency_specs) + 1 == lengthof(_currency_string_list));

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// get a mask of the allowed currencies depending on the year

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uint GetMaskOfAllowedCurrencies(void)

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{

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	uint mask = 0;

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	uint i;

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	for (i = 0; i != lengthof(_currency_specs); i++) {

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		uint16 to_euro = _currency_specs[i].to_euro;

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		if (to_euro != CF_NOEURO && to_euro != CF_ISEURO && _cur_year >= to_euro - MAX_YEAR_BEGIN_REAL) continue;

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		if (to_euro == CF_ISEURO && _cur_year < 2000 - MAX_YEAR_BEGIN_REAL) continue;

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		mask |= (1 << i);

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	}

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	mask |= (1 << CUSTOM_CURRENCY_ID); // always allow custom currency

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	return mask;

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}

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void CheckSwitchToEuro(void)

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{

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	if (_currency_specs[_opt.currency].to_euro != CF_NOEURO &&

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			_currency_specs[_opt.currency].to_euro != CF_ISEURO &&

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			MAX_YEAR_BEGIN_REAL + _cur_year >= _currency_specs[_opt.currency].to_euro) {

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		_opt.currency = 2; // this is the index of euro above.

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		AddNewsItem(STR_EURO_INTRODUCE, NEWS_FLAGS(NM_NORMAL, 0, NT_ECONOMY, 0), 0, 0);

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	}

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}