//samantha petro. created 3 oct 2006. last modified 17 oct 2006.
//deck.cpp - defines the deck class

#include "deck.h"

// -------- constructors ------- //
deck::deck(string fname) {
	filldeck(fname);
}

// ----------- set ----------- //
void deck::filldeck(string fname) {
	//open file
	fstream file;
	file.open(fname.c_str());

	//create temp & counter vars
	int i = 0;
	string name;
	int atk, def;
	card temp;

	//retrieve cards from file
	while(!file.eof()) {
		//read card members from file
		file >> name;
		file >> atk;
		file >> def;

		//set card
		temp.setData(name, atk, def);
		cardlist.push_back(temp);
	}
}

// ------ card functions -------- //
card deck::draw() {
	//store next card to draw
	card temp = cardlist[cardlist.size()-1];
	cardlist.pop_back(); //remove the last card from the deck
	return temp;
}

void deck::shuffle() {
	//randomly shuffle deck between 5 - 10 times
	/*srand(time(NULL));
	int index = (rand() % 5) + 5;
	for (int i = 0; i < index; i++) {
		random_shuffle(cardlist.begin(), cardlist.end());
	}*/


	//seed random number generator with the system's time
	srand(time(NULL));

	//create the temporary card used for the swapping algorithm
	card temp;
	int firstindex, secondindex; //indices for the swap

	for (int i = 0; i < 100; i++) {
		//retrieve the indices
		firstindex = (rand() % 32);
		secondindex = (rand() % 32);

		/*cout << "turn " << i << endl
			 << "1st: " << cardlist[firstindex] << endl
			 << "2nd: " << cardlist[secondindex] << endl;*/
		//shuffle
		temp = cardlist[secondindex]; //store 2nd index
		//cout << "swap 1: temp: " << temp << endl;
		cardlist[secondindex] = cardlist[firstindex]; //move 1st to 2nd index
		//cout << "swap2: 2ndindex: " << cardlist[secondindex] << endl;
		cardlist[firstindex] = temp; //move 2nd from temp to 1st index
		//cout << "swap3: 1stindex: " << cardlist[firstindex] << endl;
	} 
}
bool deck::hasCards() {
	return !cardlist.empty();
}

//----- debug I/O --------- //
ostream &operator << (ostream &os, deck &d) {
	for (int i = 0; i < d.cardlist.size(); i++) {
		os << d.cardlist[i] << "    ";
		//add newline if not at end of list
		if (i < d.cardlist.size() - 1)
			os << endl;
	}

	return os;
}