#include "./bellringer.h"
#include "../interrupt/guard.h"

// check: Checks whether bells are running out of time and rings them if
// necessary
void Bellringer::check(Vault &vault) {
  auto first = vault.bellringer.bells.dequeue();
  first->counter--;
  if (vault.bellringer.bellPending()){
    vault.bellringer.bells.insertFirst(*first);
  }
  if (vault.bellringer.bellPending()){
    if (first->counter < 1) {
      vault.sch.ready(vault.bellringer.bells.dequeue()->thread);
    }

  }
}
// job: Give a bell to the bellringer & ring it when the specified time ran out.
void Bellringer::sleep(Vault &vault, unsigned int ms) {
  Bell bell;
  bell.thread = vault.sch.dispatcher.active();
  auto tmp = vault.bellringer.bells.dequeue();
  vault.bellringer.bells.insertFirst(*tmp);
  do{
      ms-=tmp->counter;
  } while ((tmp=vault.bellringer.bells.next(*tmp)) != nullptr );
  bell.counter = ms;
  vault.sch.resume(false);
}

// Are there bells in the queue?
bool Bellringer::bellPending() const { 
  if (bells.is_empty())
    return false;
  else
    return true; 
}