<?php

function initMineIfNeeded() {
	if(empty($_SESSION["mine"]))
		$_SESSION["mine"] = array("gold" => 0);
	else if(!array_key_exists("gold", $_SESSION["mine"]))
		$_SESSION["mine"]["gold"] = 0;
}

function withdrawMine() {
	$amount = intval($_POST["amount"]);
	if(!empty($_SESSION["dungeon"])) {
		sendError("cant_withdraw_in_dungeon");
		return;
	}
	if($amount == 0) return;
	initMineIfNeeded();
	$_SESSION["mine"]["gold"] += $amount;
	echo json_encode($_SESSION["mine"]["gold"]);
}

function sendMine() {
	initMineIfNeeded();
	$mine = $_SESSION["mine"];
	return $mine["gold"];
}


?>