-- Search items in marketplace object
-- @param string the string
-- @return string with found items, if no items found returns boolean false
function x_marketplace.store_find(string)
	local found = ""
	for k, v in pairs(x_marketplace.store_list) do
		if string.find(k, string) then
			found = found..k.." buy: "..string.format("%.2f", v.buy).." sell: "..string.format("%.2f", v.sell).."\n"
		end
	end

	if found == "" then
		found = false
	end

	return found
end

-- Get random items from the store
-- @param number the integer
-- @return string with found items
function x_marketplace.store_get_random(number)
	local keys, i, suggest = {}, 1, ""
	local how_many = number or 5

	for k, v in pairs(x_marketplace.store_list) do
		keys[i] = k
		i = i + 1
	end

	for i = 1, how_many do
		suggest = suggest.."\n"..keys[math.random(1, #keys)]
	end

	return suggest
end

-- Get players balance of BitGold
-- @param name the string of player name
-- @return string the current balance
function x_marketplace.get_player_balance(name)
	if not name then
		return ""
	end

	local player = minetest.get_player_by_name(name)
	local balance = player:get_attribute("balance") or 0
	return balance
end

-- Set players balance of BitGold
-- @param name the string of player name
-- @param amount the number of what should be added/deducted (if negative) from players balance
-- @return string the balance info message, returns false if not enough funds
function x_marketplace.set_player_balance(name, amount)
	if not name or not amount then
		return ""
	end
	local player = minetest.get_player_by_name(name)
	local balance = player:get_attribute("balance") or 0
	local new_balance = balance + amount

	if new_balance < 0 then
		return false
	end

	player:set_attribute("balance", new_balance)

	return new_balance
end