/**
 * The full-screen page the player is currently be on.
 * These pages are mutually exclusive.
 */
export enum Page {
  /**
   * (Default) The terminal is where the player issues all commands, executes scripts, etc.
   */
  Terminal = "Terminal",

  /**
   * Displays most of the statistics about the player.
   */
  CharacterInfo = "CharacterInfo",

  /**
   * The console for editing Netscript files.
   */
  ScriptEditor = "ScriptEditor",

  /**
   * Monitor the scripts currently executing across the servers.
   */
  ActiveScripts = "ActiveScripts",

  /**
   * View, purchase, and upgrade Hacknet nodes.
   */
  HacknetNodes = "HacknetNodes",

  /**
   * The list of programs the player could potentially build.
   */
  CreateProgram = "CreateProgram",

  /**
   * The list of all factions, and invites, available to the player.
   */
  Factions = "Factions",

  /**
   * Information about a specific faction.
   */
  Faction = "Faction",

  /**
   * The list of installed, and yet-to-be installed, augmentations the player has purchased.
   */
  Augmentations = "Augmentations",

  /**
   * List of milestones that players should follow.
   */
  Milestones = "Milestones",

  /**
   * A collection of in-game material to learn about the game.
   */
  Tutorial = "Tutorial",

  /**
   * A collection of items to manipulate the state of the game. Useful for development.
   */
  DevMenu = "Dev Menu",

  /**
   * Visiting a location in the world
   */
  Location = "Location",

  /**
   * A blocking page to show the player they are currently doing some action (building a program, working, etc.).
   */
  workInProgress = "WorkInProgress",

  /**
   * A special screen to show the player they've reached a certain point in the game.
   */
  RedPill = "RedPill",

  /**
   * A special screen to show the player they've reached a certain point in the game.
   */
  CinematicText = "CinematicText",

  /**
   * Mini-game to infiltrate a company, gaining experience from successful progress.
   */
  Infiltration = "Infiltration",

  /**
   * View the in-game stock market.
   */
  StockMarket = "StockMarket",

  /**
   * Manage gang actions and members.
   */
  Gang = "Gang",

  /**
   * Perform missions for a Faction.
   */
  Mission = "Mission",

  /**
   * Manage a corporation.
   */
  Corporation = "Corporation",

  /**
   * Manage special Bladeburner activities.
   */
  Bladeburner = "Bladeburner",

  /**
   * Manage your Sleeves
   */
  Sleeves = "Sleeves",

  /**
   * Purchase Resleeves
   */
  Resleeves = "Re-sleeving",

  /**
   * Game options
   */
  GameOptions = "GameOptions",
}

/**
 * This class keeps track of player navigation/routing within the game.
 */
class Routing {
  /**
   * Tracking the what page the user is currently on.
   */
  private currentPage: Page | null = null;

  /**
   * Determines if the player is currently on the specified page.
   * @param page The page to compare against the current state.
   */
  isOn(page: Page): boolean {
    return this.currentPage === page;
  }

  /**
   * Routes the player to the appropriate page.
   * @param page The page to navigate to.
   */
  navigateTo(page: Page): void {
    this.currentPage = page;
  }
}

/**
 * The routing instance for tracking page navigation.
 */
export const routing: Routing = new Routing();