#pragma once
#include "module.h"

// The shell: owns the module list, the main menu, and event routing.
// Backtick (`) always returns to the menu from inside a module.
class Shell {
public:
  void begin();
  void loop();
private:
  static constexpr int MAX = 12;
  Module* mods[MAX]; int nmods = 0;
  int sel = 0;              // menu cursor
  int active = -1;          // -1 == in menu
  int top = 0;              // first visible menu row
  uint32_t lastTick = 0;
  void add(Module* m) { if (nmods < MAX) mods[nmods++] = m; }
  void drawMenu(bool force = false);
  void enter(int i);
  void back();
};