// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "src/connectivity/bluetooth/core/bt-host/public/pw_bluetooth_sapphire/internal/host/gap/identity_resolving_list.h"

#include "src/connectivity/bluetooth/core/bt-host/public/pw_bluetooth_sapphire/internal/host/common/log.h"
#include "src/connectivity/bluetooth/core/bt-host/public/pw_bluetooth_sapphire/internal/host/sm/util.h"

namespace bt::gap {

void IdentityResolvingList::Add(DeviceAddress identity, const UInt128& irk) {
  bt_log(DEBUG, "gap", "Adding IRK for identity address %s", bt_str(identity));
  registry_[identity] = irk;
}

void IdentityResolvingList::Remove(DeviceAddress identity) {
  bt_log(
      DEBUG, "gap", "Removing IRK for identity address %s", bt_str(identity));
  registry_.erase(identity);
}

std::optional<DeviceAddress> IdentityResolvingList::Resolve(
    DeviceAddress rpa) const {
  if (!rpa.IsResolvablePrivate()) {
    return std::nullopt;
  }

  for (const auto& [identity, irk] : registry_) {
    if (sm::util::IrkCanResolveRpa(irk, rpa)) {
      bt_log(
          DEBUG, "gap", "RPA %s resolved to %s", bt_str(rpa), bt_str(identity));
      return identity;
    }
  }

  return std::nullopt;
}

}  // namespace bt::gap