bitburner-src/src/DarkWeb/DarkWeb.tsx

import * as React from "react";
import { DarkWebItems } from "./DarkWebItems";

import { Player } from "../Player";
import { SpecialServerIps } from "../Server/SpecialServerIps";
import { post, postElement } from "../ui/postToTerminal";
import { Money } from "../ui/React/Money";

import { isValidIPAddress } from "../../utils/helpers/isValidIPAddress";

//Posts a "help" message if connected to DarkWeb
export function checkIfConnectedToDarkweb(): void {
  if (SpecialServerIps.hasOwnProperty("Darkweb Server")) {
    const darkwebIp = SpecialServerIps.getIp("Darkweb Server");
    if (!isValidIPAddress(darkwebIp)) {
      return;
    }
    if (darkwebIp == Player.getCurrentServer().ip) {
      post(
        "You are now connected to the dark web. From the dark web you can purchase illegal items. " +
          "Use the 'buy -l' command to display a list of all the items you can buy. Use 'buy [item-name] " +
          "to purchase an item.",
      );
    }
  }
}

//Handler for dark web commands. The terminal's executeCommand() function will pass
//dark web-specific commands into this. It will pass in the raw split command array
//rather than the command string
export function executeDarkwebTerminalCommand(commandArray: string[]): void {
  if (commandArray.length == 0) {
    return;
  }
  switch (commandArray[0]) {
    case "buy": {
      if (commandArray.length != 2) {
        post("Incorrect number of arguments. Usage: ");
        post("buy -l");
        post("buy [item name]");
        return;
      }
      const arg = commandArray[1];
      if (arg == "-l" || arg == "-1" || arg == "--list") {
        listAllDarkwebItems();
      } else {
        buyDarkwebItem(arg);
      }
      break;
    }
    default:
      post("Command not found");
      break;
  }
}

function listAllDarkwebItems(): void {
  for (const key in DarkWebItems) {
    const item = DarkWebItems[key];
    postElement(
      <>
        {item.program} - <Money money={item.price} player={Player} /> -{" "}
        {item.description}
      </>,
    );
  }
}

function buyDarkwebItem(itemName: string): void {
  itemName = itemName.toLowerCase();

  // find the program that matches, if any
  let item = null;
  for (const key in DarkWebItems) {
    const i = DarkWebItems[key];
    if (i.program.toLowerCase() == itemName) {
      item = i;
    }
  }

  // return if invalid
  if (item === null) {
    post("Unrecognized item: " + itemName);
    return;
  }

  // return if the player already has it.
  if (Player.hasProgram(item.program)) {
    post("You already have the " + item.program + " program");
    return;
  }

  // return if the player doesn't have enough money
  if (Player.money.lt(item.price)) {
    post("Not enough money to purchase " + item.program);
    return;
  }

  // buy and push
  Player.loseMoney(item.price);
  Player.getHomeComputer().programs.push(item.program);
  post(
    "You have purchased the " +
      item.program +
      " program. The new program can be found on your home computer.",
  );
}