#define VCMI_DLL
#include "HeroBonus.h"
#include <boost/foreach.hpp>
#include "VCMI_Lib.h"
#include "../hch/CSpellHandler.h"
#include <sstream>
#include "../hch/CCreatureHandler.h"
#include <boost/assign/list_of.hpp>
#include "CCreatureSet.h"
#include <boost/algorithm/string/trim.hpp>

#define FOREACH_CONST_PARENT(pname) 	TCNodes parents; getParents(parents); BOOST_FOREACH(const CBonusSystemNode *pname, parents)
#define FOREACH_PARENT(pname) 	TNodes parents; getParents(parents); BOOST_FOREACH(CBonusSystemNode *pname, parents)

#define BONUS_NAME(x) ( #x, Bonus::x )
	DLL_EXPORT const std::map<std::string, int> bonusNameMap = boost::assign::map_list_of BONUS_LIST;
#undef BONUS_NAME

int DLL_EXPORT BonusList::totalValue() const
{
	int base = 0;
	int percentToBase = 0;
	int percentToAll = 0;
	int additive = 0;
	int indepMax = 0;
	bool hasIndepMax = false;

	BOOST_FOREACH(Bonus *i, *this)
	{
		switch(i->valType)
		{
		case Bonus::BASE_NUMBER:
			base += i->val;
			break;
		case Bonus::PERCENT_TO_ALL:
			percentToAll += i->val;
			break;
		case Bonus::PERCENT_TO_BASE:
			percentToBase += i->val;
			break;
		case Bonus::ADDITIVE_VALUE:
			additive += i->val;
			break;
		case Bonus::INDEPENDENT_MAX:
			if (!indepMax)
			{
				indepMax = i->val;
				hasIndepMax = true;
			}
			else
			{
				amax(indepMax, i->val);
			}

			break;
		}
	}
	int modifiedBase = base + (base * percentToBase) / 100;
	modifiedBase += additive;
	int valFirst = (modifiedBase * (100 + percentToAll)) / 100;
	if (hasIndepMax)
		return std::max(valFirst, indepMax);
	else
		return valFirst;
}
const DLL_EXPORT Bonus * BonusList::getFirst(const CSelector &selector) const
{
	BOOST_FOREACH(Bonus *i, *this)
		if(selector(i))
			return &*i;
	return NULL;
}

DLL_EXPORT Bonus * BonusList::getFirst(const CSelector &select)
{
	BOOST_FOREACH(Bonus *i, *this)
		if(select(i))
			return &*i;
	return NULL;
}

void DLL_EXPORT BonusList::getModifiersWDescr(TModDescr &out) const
{
	BOOST_FOREACH(Bonus *i, *this)
		out.push_back(std::make_pair(i->val, i->Description()));
}

void DLL_EXPORT BonusList::getBonuses(BonusList &out, const CSelector &selector, const CBonusSystemNode *source /*= NULL*/) const
{
	BOOST_FOREACH(Bonus *i, *this)
		if(selector(i) && i->effectRange == Bonus::NO_LIMIT)
			out.push_back(i);
}

void DLL_EXPORT BonusList::getBonuses(BonusList &out, const CSelector &selector, const CSelector &limit, const CBonusSystemNode *source /*= NULL*/) const
{
	BOOST_FOREACH(Bonus *i, *this)
		if(selector(i) && (!limit || limit(i)))
			out.push_back(i);
}

namespace HHLP
{
	class SourceComp
	{
	public:
		Bonus::BonusSource src;
		SourceComp(Bonus::BonusSource _src) : src(_src)
		{
		}
		bool operator()(const Bonus * bon)
		{
			return bon->source == src;
		}
	};
}


void DLL_EXPORT BonusList::removeSpells(Bonus::BonusSource sourceType)
{
	std::remove_if(begin(), end(), HHLP::SourceComp(sourceType));
}

void BonusList::limit(const CBonusSystemNode &node)
{
limit_start:
	for(iterator i = begin(); i != end(); i++)
	{
		Bonus *b = *i;
		if(b->limiter && b->limiter->limit(b, node))
		{
			iterator toErase = i;
			if(i != begin())
			{
				i--;
				erase(toErase);
			}
			else
			{
				erase(toErase);
				goto limit_start;
			}
		}
	}
}

int CBonusSystemNode::valOfBonuses(Bonus::BonusType type, const CSelector &selector) const
{
	return valOfBonuses(Selector::type(type) && selector);
}
int CBonusSystemNode::valOfBonuses(Bonus::BonusType type, int subtype /*= -1*/) const
{
	CSelector s = Selector::type(type);
	if(subtype != -1)
		s = s && Selector::subtype(subtype);

	return valOfBonuses(s);
}
int CBonusSystemNode::valOfBonuses(const CSelector &selector) const
{
	BonusList hlp;
	getBonuses(hlp, selector);
	return hlp.totalValue();
}
bool CBonusSystemNode::hasBonus(const CSelector &selector) const
{
	return getBonuses(selector).size() > 0;
}

bool CBonusSystemNode::hasBonusOfType(Bonus::BonusType type, int subtype /*= -1*/) const
{
	CSelector s = Selector::type(type);
	if(subtype != -1)
		s = s && Selector::subtype(subtype);

	return hasBonus(s);
}

Bonus * CBonusSystemNode::getBonus(const CSelector &selector)
{
	Bonus *ret = bonuses.getFirst(selector);
	if(ret)
		return ret;

	FOREACH_PARENT(pname)
	{
		ret = pname->getBonus(selector);
		if (ret)
			return ret;
	}

	return NULL;
}

void CBonusSystemNode::getModifiersWDescr(TModDescr &out, Bonus::BonusType type, int subtype /*= -1 */) const
{
	getModifiersWDescr(out, Selector::typeSybtype(type, subtype));
}

void CBonusSystemNode::getModifiersWDescr(TModDescr &out, const CSelector &selector) const
{
	getBonuses(selector).getModifiersWDescr(out);
}
int CBonusSystemNode::getBonusesCount(int from, int id) const
{
	return getBonusesCount(Selector::source(from, id));
}

int CBonusSystemNode::getBonusesCount(const CSelector &selector) const
{
	return getBonuses(selector).size();
}

void CBonusSystemNode::getParents(TCNodes &out) const /*retreives list of parent nodes (nodes to inherit bonuses from) */
{
	BOOST_FOREACH(const CBonusSystemNode *parent, parents)
		out.insert(parent);
}

void CBonusSystemNode::getParents(TNodes &out)
{
	BOOST_FOREACH(const CBonusSystemNode *parent, parents)
		out.insert(const_cast<CBonusSystemNode*>(parent));
}

void CBonusSystemNode::getBonuses(BonusList &out, const CSelector &selector, const CBonusSystemNode *root /*= NULL*/) const
{
	FOREACH_CONST_PARENT(p) //unwinded macro
		p->getBonuses(out, selector, root ? root : this);

	bonuses.getBonuses(out, selector);
	
	if(!root)
		out.limit(*this);
}

BonusList CBonusSystemNode::getBonuses(const CSelector &selector) const
{
	BonusList ret;
	getBonuses(ret, selector);
	return ret;
}

void CBonusSystemNode::getBonuses(BonusList &out, const CSelector &selector, const CSelector &limit) const
{
	getBonuses(out, selector); //first get all the bonuses
	out.remove_if(std::not1(limit)); //now remove the ones we don't like
	out.limit(*this); //apply bonuses' limiters
}

BonusList CBonusSystemNode::getBonuses(const CSelector &selector, const CSelector &limit) const
{
	BonusList ret;
	getBonuses(ret, selector, limit);
	return ret;
}

bool CBonusSystemNode::hasBonusFrom(ui8 source, ui32 sourceID) const
{
	return hasBonus(Selector::source(source,sourceID));
}

int CBonusSystemNode::MoraleVal() const
{
	if(hasBonusOfType(Bonus::NON_LIVING) || hasBonusOfType(Bonus::UNDEAD) ||
		hasBonusOfType(Bonus::NO_MORALE) || hasBonusOfType(Bonus::SIEGE_WEAPON))
		return 0;

	int ret = valOfBonuses(Selector::type(Bonus::MORALE));

	if(hasBonusOfType(Bonus::SELF_MORALE)) //eg. minotaur
		amax(ret, +1);

	return abetw(ret, -3, +3);
}

int CBonusSystemNode::LuckVal() const
{
	if(hasBonusOfType(Bonus::NO_LUCK))
		return 0;

	int ret = valOfBonuses(Selector::type(Bonus::LUCK));
	
	if(hasBonusOfType(Bonus::SELF_LUCK)) //eg. halfling
		amax(ret, +1);

	return abetw(ret, -3, +3);
}

si32 CBonusSystemNode::Attack() const
{
	si32 ret = valOfBonuses(Bonus::PRIMARY_SKILL, PrimarySkill::ATTACK);

	if(int frenzyPower = valOfBonuses(Bonus::IN_FRENZY)) //frenzy for attacker
	{
		ret += frenzyPower * Defense(false);
	}

	return ret;
}

si32 CBonusSystemNode::Defense(bool withFrenzy /*= true*/) const
{
	si32 ret = valOfBonuses(Bonus::PRIMARY_SKILL, PrimarySkill::DEFENSE);

	if(withFrenzy && hasBonusOfType(Bonus::IN_FRENZY)) //frenzy for defender
	{
		return 0;
	}

	return ret;
}

ui16 CBonusSystemNode::MaxHealth() const
{
	return valOfBonuses(Bonus::STACK_HEALTH);
}

ui32 CBonusSystemNode::getMinDamage() const
{
	return valOfBonuses(Selector::typeSybtype(Bonus::CREATURE_DAMAGE, 0) || Selector::typeSybtype(Bonus::CREATURE_DAMAGE, 1));
}
ui32 CBonusSystemNode::getMaxDamage() const
{
	return valOfBonuses(Selector::typeSybtype(Bonus::CREATURE_DAMAGE, 0) || Selector::typeSybtype(Bonus::CREATURE_DAMAGE, 2));
}

CBonusSystemNode::CBonusSystemNode()
{
	nodeType = UNKNOWN;
}

CBonusSystemNode::~CBonusSystemNode()
{

}

void CBonusSystemNode::attachTo(const CBonusSystemNode *parent)
{

}

void CBonusSystemNode::detachFrom(const CBonusSystemNode *parent)
{

}

void CBonusSystemNode::popBonuses(const CSelector &s)
{
	//TODO
	//prop

	bonuses.remove_if(s);
	BOOST_FOREACH(CBonusSystemNode *child, children)
		child->popBonuses(s);
}

void CBonusSystemNode::addNewBonus(const Bonus &b)
{
	addNewBonus(new Bonus(b));
}

void CBonusSystemNode::addNewBonus(Bonus *b)
{

}

void CBonusSystemNode::removeBonus(Bonus *b)
{
	//TODO
}

int NBonus::valOf(const CBonusSystemNode *obj, Bonus::BonusType type, int subtype /*= -1*/)
{
	if(obj)
		return obj->valOfBonuses(type, subtype);
	return 0;
}

bool NBonus::hasOfType(const CBonusSystemNode *obj, Bonus::BonusType type, int subtype /*= -1*/)
{
	if(obj)
		return obj->hasBonusOfType(type, subtype);
	return false;
}

void NBonus::getModifiersWDescr(const CBonusSystemNode *obj, TModDescr &out, Bonus::BonusType type, int subtype /*= -1 */)
{
	if(obj)
		return obj->getModifiersWDescr(out, type, subtype);
}

int NBonus::getCount(const CBonusSystemNode *obj, int from, int id)
{
	if(obj)
		return obj->getBonusesCount(from, id);
	return 0;
}

const CSpell * Bonus::sourceSpell() const
{
	if(source == SPELL_EFFECT)
		return &VLC->spellh->spells[id];
	return NULL;
}

std::string Bonus::Description() const
{
	if(description.size())
		return description;

	std::ostringstream str;
	if(val < 0)
		str << '-';
	else if(val > 0)
		str << '+';

	str << val << " ";

	switch(source)
	{
	case CREATURE_ABILITY:
		str << VLC->creh->creatures[id]->namePl;
		break;
	}
	
	return str.str();
}

Bonus::Bonus(ui8 Dur, ui8 Type, ui8 Src, si32 Val, ui32 ID, std::string Desc, si32 Subtype/*=-1*/) 
	: duration(Dur), type(Type), subtype(Subtype), source(Src), val(Val), id(ID), description(Desc)
{
	additionalInfo = -1;
	turnsRemain = 0;
	valType = ADDITIVE_VALUE;
	effectRange = NO_LIMIT;
	limiter = NULL;
	boost::algorithm::trim(description);
}

Bonus::Bonus(ui8 Dur, ui8 Type, ui8 Src, si32 Val, ui32 ID, si32 Subtype/*=-1*/, ui8 ValType /*= ADDITIVE_VALUE*/) 
	: duration(Dur), type(Type), subtype(Subtype), source(Src), val(Val), id(ID), valType(ValType)
{
	additionalInfo = -1;
	turnsRemain = 0;
	effectRange = NO_LIMIT;
	limiter = NULL;
}

Bonus::Bonus()
{
	subtype = -1;
	additionalInfo = -1;
	turnsRemain = 0;
	valType = ADDITIVE_VALUE;
	effectRange = NO_LIMIT;
	limiter = NULL;
}

CSelector DLL_EXPORT operator&&(const CSelector &first, const CSelector &second)
{
	return CSelectorsConjunction(first, second);
}
CSelector DLL_EXPORT operator||(const CSelector &first, const CSelector &second)
{
	return CSelectorsAlternative(first, second);
}

namespace Selector
{
	DLL_EXPORT CSelectFieldEqual<TBonusType> type(&Bonus::type, 0);
	DLL_EXPORT CSelectFieldEqual<TBonusSubtype> subtype(&Bonus::subtype, 0);
	DLL_EXPORT CSelectFieldEqual<si32> info(&Bonus::additionalInfo, 0);
	DLL_EXPORT CSelectFieldEqual<ui8> sourceType(&Bonus::source, 0);
	DLL_EXPORT CSelectFieldEqual<ui8> effectRange(&Bonus::effectRange, Bonus::NO_LIMIT);
	DLL_EXPORT CWillLastTurns turns;;

	CSelector DLL_EXPORT typeSybtype(TBonusType Type, TBonusSubtype Subtype)
	{
		return type(Type) && subtype(Subtype);
	}

	CSelector DLL_EXPORT typeSybtypeInfo(TBonusType type, TBonusSubtype subtype, si32 info)
	{
		return CSelectFieldEqual<TBonusType>(&Bonus::type, type) && CSelectFieldEqual<TBonusSubtype>(&Bonus::subtype, subtype) && CSelectFieldEqual<si32>(&Bonus::additionalInfo, info);
	}

	CSelector DLL_EXPORT source(ui8 source, ui32 sourceID)
	{
		return CSelectFieldEqual<ui8>(&Bonus::source, source) && CSelectFieldEqual<ui32>(&Bonus::id, sourceID);
	}

	CSelector DLL_EXPORT sourceTypeSel(ui8 source)
	{
		return CSelectFieldEqual<ui8>(&Bonus::source, source);
	}

	bool DLL_EXPORT matchesType(const CSelector &sel, TBonusType type)
	{
		Bonus dummy;
		dummy.type = type;
		return sel(&dummy);
	}

	bool DLL_EXPORT matchesTypeSubtype(const CSelector &sel, TBonusType type, TBonusSubtype subtype)
	{
		Bonus dummy;
		dummy.type = type;
		dummy.subtype = subtype;
		return sel(&dummy);
	}
}

DLL_EXPORT std::ostream & operator<<(std::ostream &out, const BonusList &bonusList)
{
	int i = 0;
	BOOST_FOREACH(const Bonus *b, bonusList)
	{
		out << "Bonus " << i++ << "\n" << *b << std::endl;
	}
	return out;
}

DLL_EXPORT std::ostream & operator<<(std::ostream &out, const Bonus &bonus)
{
	for(std::map<std::string, int>::const_iterator i = bonusNameMap.begin(); i != bonusNameMap.end(); i++)
		if(i->second == bonus.type)
			out << "\tType: " << i->first << " \t";

#define printField(field) out << "\t" #field ": " << (int)bonus.field << "\n"
	printField(val);
	printField(subtype);
	printField(duration);
	printField(source);
	printField(id);
	printField(additionalInfo);
	printField(turnsRemain);
	printField(valType);
	printField(effectRange);
#undef printField

	return out;
}

ILimiter::~ILimiter()
{
}

bool ILimiter::limit(const Bonus *b, const CBonusSystemNode &node) const /*return true to drop the bonus */
{
	return false;
}

bool CCreatureTypeLimiter::limit(const Bonus *b, const CBonusSystemNode &node) const
{
	switch (node.nodeType)
	{	
		case CBonusSystemNode::STACK:
		{
			const CCreature *c = (static_cast<const CStackInstance *>(&node))->type;
			return c != creature   &&   (!includeUpgrades || !creature->isMyUpgrade(c));
		}	//drop bonus if it's not our creature and (we dont check upgrades or its not our upgrade)
			break;
		case CBonusSystemNode::CREATURE:
		{
			const CCreature *c = (static_cast<const CCreature *>(&node));
			return c != creature   &&   (!includeUpgrades || !creature->isMyUpgrade(c));
		}
			break;
		default:
			return true;
	}
}
CCreatureTypeLimiter::CCreatureTypeLimiter(const CCreature &Creature, ui8 IncludeUpgrades /*= true*/)
	:creature(&Creature), includeUpgrades(IncludeUpgrades)
{
}

CCreatureTypeLimiter::CCreatureTypeLimiter()
{
	creature = NULL;
	includeUpgrades = false;
}

HasAnotherBonusLimiter::HasAnotherBonusLimiter( TBonusType bonus )
	: type(bonus), subtype(0), isSubtypeRelevant(false)
{
}

HasAnotherBonusLimiter::HasAnotherBonusLimiter( TBonusType bonus, TBonusSubtype _subtype )
	: type(bonus), subtype(_subtype), isSubtypeRelevant(true)
{
}

bool HasAnotherBonusLimiter::limit( const Bonus *b, const CBonusSystemNode &node ) const
{
	if(isSubtypeRelevant)
	{
		return !node.hasBonusOfType(static_cast<Bonus::BonusType>(type), subtype);
	}
	else
	{
		return !node.hasBonusOfType(static_cast<Bonus::BonusType>(type));
	}
}