#ifndef __CGAMEINTERFACE_H__
#define __CGAMEINTERFACE_H__
#include "global.h"
#include <set>
#include <vector>
#include "lib/BattleAction.h"
#include "client/FunctionList.h"
#include "hch/CMusicHandler.h"

/*
 * CGameInterface.h, part of VCMI engine
 *
 * Authors: listed in file AUTHORS in main folder
 *
 * License: GNU General Public License v2.0 or later
 * Full text of license available in license.txt file, in main folder
 *
 */

using namespace boost::logic;
class CCallback;
class ICallback;
class CGlobalAI;
class CGHeroInstance;
class Component;
class CSelectableComponent;
struct TryMoveHero;
class CGHeroInstance;
class CGTownInstance;
class CGObjectInstance;
class CGDwelling;
class CCreatureSet;
class CArmedInstance;
class IShipyard;
struct BattleResult;
struct BattleAttack;
struct BattleStackAttacked;
struct SpellCast;
struct SetStackEffect;
struct HeroBonus;
struct PackageApplied;
struct SetObjectProperty;
class CLoadFile;
class CSaveFile;
template <typename Serializer> class CISer;
template <typename Serializer> class COSer;

class CObstacle
{
	int ID;
	int position;
	//TODO: add some kind of the blockmap
};

struct StackState
{
	StackState(){attackBonus=defenseBonus=healthBonus=speedBonus=morale=luck=shotsLeft=currentHealth=0;};
	int attackBonus, defenseBonus, healthBonus, speedBonus;
	int currentHealth;
	int shotsLeft;
	std::set<int> effects; //IDs of spells affecting stack
	int morale, luck;
	int dmgMultiplier; //for ballista dmg bonus handling
};

class CGameInterface
{
public:
	bool human;
	int playerID, serialID;
	std::string dllName;

	virtual void buildChanged(const CGTownInstance *town, int buildingID, int what){}; //what: 1 - built, 2 - demolished
	virtual void garrisonChanged(const CGObjectInstance * obj){};
	virtual void heroArtifactSetChanged(const CGHeroInstance*hero){};
	virtual void heroCreated(const CGHeroInstance*){};
	virtual void heroGotLevel(const CGHeroInstance *hero, int pskill, std::vector<ui16> &skills, boost::function<void(ui32)> &callback)=0; //pskill is gained primary skill, interface has to choose one of given skills and call callback with selection id
	virtual void heroInGarrisonChange(const CGTownInstance *town){};
	//virtual void heroKilled(const CGHeroInstance*){};
	virtual void heroMoved(const TryMoveHero & details){};
	virtual void heroPrimarySkillChanged(const CGHeroInstance * hero, int which, int val){};
	virtual void heroManaPointsChanged(const CGHeroInstance * hero){} //not called at the beginning of turn and after spell casts
	virtual void heroMovePointsChanged(const CGHeroInstance * hero){} //not called at the beginning of turn and after movement
	virtual void heroVisitsTown(const CGHeroInstance* hero, const CGTownInstance * town){};
	virtual void init(ICallback * CB){};
	virtual void receivedResource(int type, int val){};
	virtual void showInfoDialog(const std::string &text, const std::vector<Component*> &components, int soundID){};
	virtual void showRecruitmentDialog(const CGDwelling *dwelling, const CArmedInstance *dst, int level){}
	virtual void showShipyardDialog(const IShipyard *obj){} //obj may be town or shipyard; state: 0 - can buid, 1 - lack of resources, 2 - dest tile is blocked, 3 - no water
	virtual void showBlockingDialog(const std::string &text, const std::vector<Component> &components, ui32 askID, const int soundID, bool selection, bool cancel) = 0; //Show a dialog, player must take decision. If selection then he has to choose between one of given components, if cancel he is allowed to not choose. After making choice, CCallback::selectionMade should be called with number of selected component (1 - n) or 0 for cancel (if allowed) and askID.
	virtual void showGarrisonDialog(const CArmedInstance *up, const CGHeroInstance *down, boost::function<void()> &onEnd) = 0; //all stacks operations between these objects become allowed, interface has to call onEnd when done
	virtual void tileHidden(const std::set<int3> &pos){};
	virtual void tileRevealed(const std::set<int3> &pos){};
	virtual void newObject(const CGObjectInstance * obj){}; //eg. ship built in shipyard
	virtual void yourTurn(){};
	virtual void availableCreaturesChanged(const CGDwelling *town){};
	virtual void heroBonusChanged(const CGHeroInstance *hero, const HeroBonus &bonus, bool gain){};//if gain hero received bonus, else he lost it
	virtual void requestRealized(PackageApplied *pa){};
	virtual void heroExchangeStarted(si32 hero1, si32 hero2){};
	virtual void objectPropertyChanged(const SetObjectProperty * sop){}; //eg. mine has been flagged
	virtual void objectRemoved(const CGObjectInstance *obj){}; //eg. collected resource, picked artifact, beaten hero
	virtual void playerBlocked(int reason){}; //reason: 0 - upcoming battle
	virtual void serialize(COSer<CSaveFile> &h, const int version){}; //saving
	virtual void serialize(CISer<CLoadFile> &h, const int version){}; //loading

	//battle call-ins
	virtual void actionFinished(const BattleAction *action){};//occurs AFTER every action taken by any stack or by the hero
	virtual void actionStarted(const BattleAction *action){};//occurs BEFORE every action taken by any stack or by the hero
	virtual BattleAction activeStack(int stackID)=0; //called when it's turn of that stack
	virtual void battleAttack(BattleAttack *ba){}; //called when stack is performing attack
	virtual void battleStacksAttacked(std::set<BattleStackAttacked> & bsa){}; //called when stack receives damage (after battleAttack())
	virtual void battleEnd(BattleResult *br){};
	virtual void battleResultsApplied(){}; //called when all effects of last battle are applied
	virtual void battleNewRound(int round){}; //called at the beggining of each turn, round=-1 is the tactic phase, round=0 is the first "normal" turn
	virtual void battleStackMoved(int ID, int dest, int distance, bool end){};
	virtual void battleSpellCast(SpellCast *sc){};
	virtual void battleStacksEffectsSet(SetStackEffect & sse){};//called when a specific effect is set to stacks
	virtual void battleStart(CCreatureSet *army1, CCreatureSet *army2, int3 tile, CGHeroInstance *hero1, CGHeroInstance *hero2, bool side){}; //called by engine when battle starts; side=0 - left, side=1 - right
	virtual void battlefieldPrepared(int battlefieldType, std::vector<CObstacle*> obstacles){}; //called when battlefield is prepared, prior the battle beginning
};
class CAIHandler
{
public:
	static CGlobalAI * getNewAI(CCallback * cb, std::string dllname);
};
class CGlobalAI : public CGameInterface // AI class (to derivate)
{
public:
	//CGlobalAI();
	virtual void yourTurn(){};
	virtual void heroKilled(const CGHeroInstance*){};
	virtual void heroCreated(const CGHeroInstance*){};
	virtual void battleStackMoved(int ID, int dest, int distance){};
	virtual void battleStackAttacking(int ID, int dest){};
	virtual void battleStackIsAttacked(int ID, int dmg, int killed, int IDby, bool byShooting){};
	virtual BattleAction activeStack(int stackID) {BattleAction ba; ba.actionType = 3; ba.stackNumber = stackID; return ba;};
};

#endif // __CGAMEINTERFACE_H__