var tier = 0;
var msgArray = [];

var allowedItems = {"mf:pickaxeiron":2,"mf:oreiron":50,"mf:oregold":50,"mf:emeraldrough":50}
var demosellmargin = 1.45
var buymargin = 0.8
var currentlyLooking = undefined;

function openAdvancedShop(chatter){
	currentlyLooking = chatter.getUniqueId();
	tier = lib.Reputation.getReputationTier(chatter, "Elpida");


	var data = lib.shop.gui.SimpleShopData.of(
			lib.shop.provider.DBNPCBalance,
			makeSellPrice,
			makeBuyPrice,
			lib.shop.provider.defaultOnMoneyAction,
			npc);

		lib.shop.gui.openShopGUI(chatter, data, traits.mfplayerinventorytrait);
}


function getText(a){
	return a[Math.floor(Math.random()*a.length)];
}

function onoff(chatter){
	if (chatter.getUniqueId() == currentlyLooking)
		currentlyLooking = undefined;
}

function makeSellPrice(npc, itemstack){
	if (!(itemstack.getItem().getName() in allowedItems))
		return -1;
	return ( getPrice(itemstack)*makeSellMargin()).intValue();
}

function makeBuyPrice(npc, itemstack){
	if (!(itemstack.getItem().getName() in allowedItems))
		return -1;
	var inv = npc.getTrait(Java.type("com.minecraftfrontiers.mfnpc.traits.inventory.MFPlayerInventoryTrait").class);
	if (inv.getAmount(itemstack.getItem().getName())+itemstack.getAmount() >= allowedItems[itemstack.getItem().getName()])
		return -1;

	return  (getPrice(itemstack)*buymargin).intValue();
}

function getPrice(itemstack){
	var r = lib.meta.getValue(itemstack.getItem().getName());
	return r <= 0?-1 : r;
}

function makeSellMargin(){
	var marg_output = demosellmargin - 0.05 * tier;
	return marg_output;
}

function onchat(chatter, msg) {
	tier = lib.Reputation.getReputationTier(chatter, "Elpida");
	msgArray = msg.split(" ");
	var tempmsg = undefined;
	if(msgArray[0].indexOf("rawr") > -1 ){
		tempmsg = "Your rep level is " + tier;
		say(npc, tempmsg.toString());
		tempmsg = "Your sell margin is " + makeSellMargin();
		say(npc, tempmsg.toString());
	}else if(msgArray[0].indexOf("points") > -1){
		lib.Reputation.addReputationAndNotify(chatter, "Elpida", msgArray[1]);
		tempmsg = "Modified " + msgArray[1] + " rep points";
		say(npc, tempmsg.toString());
	}else if(msgArray[0].indexOf("shop") > -1 ){
	openAdvancedShop(chatter);
	}
}

function loaded(){
	say(npc, "I am a very cool duck! >:I");

}