move_modules

module _1200_dollars_per_hour::my_module {
  use _1200_dollars_per_hour::events::{Self, ListEvent, BuyEvent };
  public entry fun list() {
    // ...
    events::emit_list_event(0);
  }

  public entry fun buy() {
    // ...
    events::emit_buy_event(0);
  }
}

module _1200_dollars_per_hour::events{
  friend _1200_dollars_per_hour::my_module;
  use aptos_framework::event::{ Self, EventHandle };
  
  struct Events has key {
    list_events: EventHandle<ListEvent>,
    buy_events: EventHandle<BuyEvent>,
  }
  struct ListEvent has store, drop {
    id: u64
  }

  struct BuyEvent has store, drop {
    id: u64
  }

  public(friend) fun emit_list_event(id: u64) acquires Events {
    let events = borrow_global_mut<Events>(@_1200_dollars_per_hour);
    event::emit_event<ListEvent>(&mut events.list_events, ListEvent{ id });
  }

  public(friend) fun emit_buy_event(id: u64) acquires Events {
    let events = borrow_global_mut<Events>(@_1200_dollars_per_hour);
    event::emit_event<BuyEvent>(&mut events.buy_events, BuyEvent{ id });
  }
}