// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// API intended for retrieving a snapshot of the network health state. Returns
// properties of any available network technologies and any connected or
// connecting network when available.

// NOTE: This mojom should kept in sync with the copy in Chromium's repo in
// src/chromeos/services/network_health/public/mojom/network_health.mojom.

module chromeos.network_health.mojom;

import "mojo/network_types.mojom";

enum NetworkState {
  // The network type is available but not yet initialized.
  kUninitialized,
  // The network type is available but disabled or disabling.
  kDisabled,
  // The network type is prohibited by policy.
  kProhibited,
  // The network type is available and enabled or enabling, but no network
  // connection has been established.
  kNotConnected,
  // The network type is available and enabled, and a network connection is
  // in progress.
  kConnecting,
  // The network is in a portal state.
  kPortal,
  // The network is in a connected state, but connectivity is limited.
  kConnected,
  // The network is connected and online.
  kOnline,
};

// Wrapper for optional uint32. // TODO(https://crbug.com/657632): Remove this
// once Mojo properly supports this.
struct UInt32Value {
  // The value of the uint64.
  uint32 value;
};

// Contains information for a single network connection and underlying
// network technology e.g WiFi.
struct Network {
  chromeos.network_config.mojom.NetworkType type;
  NetworkState state;
  // The unique identifier for the network when a network service exists.
  string? guid;
  // The user facing name of the network if available.
  string? name;
  // Optional string for the network devices's mac_address. This field is not
  // intended to be parsed and is only for informational purposes.
  string? mac_address;
  // Signal strength of the network provided only for wireless networks. Values
  // are normalized between 0 to 100 inclusive. Values less than 30 are
  // considered potentially problematic for the connection. See
  // src/platform2/shill/doc/service-api.txt for more details.
  UInt32Value? signal_strength;
};

// Aggregate structure for all of the network health state.
struct NetworkHealthState {
  // Networks will be sorted with active connections listed first.
  array<Network> networks;
};

// Interface for retrieving aggregated information about the current network
// state and health.
interface NetworkHealthService {
  // Returns a list of all the networks. Networks will be sorted with active
  // connections listed first.
  GetNetworkList() => (array<Network> networks);

  // Returns the current network health state.
  // This is currently the same information provided by GetNetworkList. More
  // information will be added over time.
  GetHealthSnapshot() => (NetworkHealthState state);
};