purchaser.js

/** @param {NS} ns **/
export async function main(ns) {
	while (true) {
		// Check optimal purchase
		var nodeNum = "Default";
		var itemType = "New Node";
		var cheapest = ns.hacknet.getPurchaseNodeCost();
		var num_nodes = ns.hacknet.numNodes();

		// Iterate through all nodes and select lowest purchase/upgrade available
		for (var i = 0; i < num_nodes; i++) {
			var level_cost = ns.hacknet.getLevelUpgradeCost(i, 1);
			var ram_cost = ns.hacknet.getRamUpgradeCost(i, 1);
			var cpu_cost = ns.hacknet.getCoreUpgradeCost(i, 1);

			if (level_cost < cheapest) {
				cheapest = level_cost;
				nodeNum = i;
				itemType = "Level";
			} if (ram_cost < cheapest) {
				cheapest = ram_cost;
				nodeNum = i;
				itemType = "RAM";
			} if (cpu_cost < cheapest) {
				cheapest = cpu_cost;
				nodeNum = i;
				itemType = "CPU";
			}
		}

		// If affordable, purchase and recalculate above
		var purchased = false;
		while (!purchased) {
			var money = ns.getServerMoneyAvailable("home");

			if (money >= cheapest) {
				if (itemType == "New Node") {
					ns.hacknet.purchaseNode();
				} if (itemType == "Level") {
					ns.hacknet.upgradeLevel(nodeNum, 1);
				} if (itemType == "RAM") {
					ns.hacknet.upgradeRam(nodeNum, 1);
				} if (itemType == "CPU") {
					ns.hacknet.upgradeCore(nodeNum, 1);
				}
				purchased = true;
			}

			// If we didn't purchase, wait 1 second and try again
			if (!purchased) {
				await ns.sleep(1000);
			}
		}

	}
}