#include <iostream>
#include <string>
#include <sstream>
#include <cstdio>
#include "FighterInterface.h"
using namespace std;

/*
	WARNING: It is expressly forbidden to modify any part of this document, including its name
*/
//=======================================================================================
FighterInterface* fight(FighterInterface*, FighterInterface*, bool);
void takeTurn(FighterInterface*, FighterInterface*, bool);
void speak(string);
//=======================================================================================
/*
	fight(FighterInterface, FighterInterface, bool)

	Runs through the fighting algorithm for the two given fighters.

	Each fighter takes a turn using its special ability, attacking, and regenerating. If 
	the other fighter's current hit points falls to or drops below 0, then the other 
	fighter has lost.  This process repeats until one fighter has fallen or 100 rounds 
	have occurred with neither fighter falling.

	If the given bool is true, this function will print a great deal of information 
	during the battle.  This can be useful for testing.

	Returns the winner of the fight; null if the fight ends in a draw.
*/
FighterInterface* fight(FighterInterface* c1, FighterInterface* c2, bool verbose)
{
	if(verbose)
	{
		stringstream stream;
		stream << "----------";
		stream << c1->getName();
		stream << " vs ";
		stream << c2->getName();
		stream << "----------";
		speak(stream.str());
	}
	
	c1->reset();
	c2->reset();

	for(int i=0; i<100; i++)
	{
		//C1's turn
		takeTurn(c1, c2, verbose);
		if(c2->getCurrentHP() <= 0)
		{
			if(verbose)
			{
				stringstream stream;
				stream << c1->getName();
				stream << " wins! (";
				stream << c1->getCurrentHP();
				stream << "/";
				stream << c1->getMaximumHP();
				stream << " HP left)";
				speak(stream.str());
			}
			return c1;
		}
		
		//C2's turn
		takeTurn(c2, c1, verbose);
		if(c1->getCurrentHP() <= 0)
		{
			if(verbose)
			{
				stringstream stream;
				stream << c2->getName();
				stream << " wins! (";
				stream << c2->getCurrentHP();
				stream << "/";
				stream << c2->getMaximumHP();
				stream << " HP left)";
				speak(stream.str());
			}
			return c2;
		}
	}
	if(verbose)
	{
		speak("After 100 rounds, neither fighter has fallen.  It's a draw!");
	}
	return NULL;
}
//=======================================================================================
/*
	takeTurn(FighterInterface*, FighterInterface*, bool)

	Runs through a single turn for [attacker] attacking [defender].  Each turn consists of
	[attacker] trying to use its special ability, attacking [defender], and regenerating.
*/
void takeTurn(FighterInterface* attacker, FighterInterface* defender, bool verbose)
{
	//Header
	if(verbose)
	{
		stringstream stream;
		stream << "It's ";
		stream << attacker->getName();
		stream << "'s turn! (";
		stream << attacker->getCurrentHP();
		stream << "/";
		stream << attacker->getMaximumHP();
		stream << " HP).";
		speak(stream.str());
	}

	//Use Ability
	if(!attacker->isSimplified())
	{
		bool ability = attacker->useAbility();
		if(ability  &&  verbose)
		{
			stringstream stream;
			stream << "\t";
			stream << attacker->getName();
			stream << " uses a special ability!";
			speak(stream.str());
		}
	}

	//Attack
	int damage = attacker->getDamage();
	int before_attack = defender->getCurrentHP();
	defender->takeDamage(damage);
	int after_attack = defender->getCurrentHP();
	if(verbose)
	{
			stringstream stream;
			stream << "\t";
			stream << attacker->getName();
			stream << " attacks with ";
			stream << damage;
			stream << " damage, and ";
			stream << defender->getName();
			stream << " takes ";
			stream << (before_attack-after_attack);
			stream << " damage.";
			speak(stream.str());
	}

	//Regenerate
	if(!attacker->isSimplified())
	{
		int before_regen = attacker->getCurrentHP();
		attacker->regenerate();
		int after_regen = attacker->getCurrentHP();
		if(verbose)
		{
			stringstream stream;
			stream << "\t";
			stream << attacker->getName();
			stream << " regenerates ";
			stream << (after_regen-before_regen);
			stream << " HP.";
			speak(stream.str());
		}
	}
}
//=======================================================================================
/*
	speak(string)

	Displays a given message.
*/
void speak(string message)
{
	printf("%s\n", message.c_str());
}
//=======================================================================================