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

syntax = "proto3";

option optimize_for = LITE_RUNTIME;

package dlcservice;
option go_package = "go.chromium.org/chromiumos/system_api/dlcservice_proto";

// This is the message that is passed into installation
message InstallRequest {
  // The unique ID of the DLC.
  string id = 1;
  // The omaha URL to download from.
  // This field is optional.
  string omaha_url = 2;
  // The DLC will reserve space on installation success/failure.
  // This field is optional.
  bool reserve = 3;

  // Temporary flags, put at end of 2-byte boundary to avoid collisions with
  // long-term values.

  // Deprecated. Use DLC_FORCE_OTA via ebuilds.
  bool force_ota = 2047 [deprecated = true];
}

// DLCs that have the selected manifest fields set to true.
message SelectDlc {
  bool user_tied = 1;
  bool scaled = 2;
}

// This is the message that is passed into unload.
message UnloadRequest {
  oneof DlcInfo {
    // Specify a DLC by ID.
    string id = 1;

    // Select DLCs that have any of the given manifest fields.
    SelectDlc select = 2;
  }
}

// This is the message that is passed to methods for listing DLCs.
message ListRequest {
  // Check mount point instead rely on the state kept by dlcservice.
  bool check_mount = 1;

  // Select DLCs base on manifest fields.
  SelectDlc select = 2;
}

// This message is used to query the DLCs that have data on disk. This allows
// Chrome UI to show this list to the users and users can decide whether to
// delete unused DLCs or not.
message DlcsWithContent {
  message DlcInfo {
    // The unique ID of the DLC.
    string id = 1;
    // The human readable name of the DLC.
    string name = 2;
    // The human readable description of the DLC.
    string description = 3;
    // The amount of disk space used by this DLC (bytes).
    uint64 used_bytes_on_disk = 4;
    // True if the DLC can be purged by anyone other than its users.
    bool is_removable = 5;
  }
  // The list of DLCs that have used disk space.
  repeated DlcInfo dlc_infos = 1;
}

// This is the message that is returned from DLC Service via |GetState| method
// and indicates what state a DLC is in.
// TODO(crbug.com/1056269): Propagate error code as well to know reason for
// failure when state is |NOT_INSTALLED|.
message DlcState {
  // Indicates what state a DLC is in.
  enum State {
    NOT_INSTALLED = 0;
    INSTALLING = 1;
    INSTALLED = 2;
  }
  State state = 1;

  // The unique identifier of a DLC.
  string id = 2;

  // The path that DLC user can access their content. This path is available
  // only when the state is INSTALLED.
  string root_path = 3;

  // The progress of installation. The value is between 0.0 and 1.0.
  double progress = 4;

  // The last error code happened on for this DLC.
  // Should only be dlcservice error codes from
  // system_api/dbus/dlcservice/dbus-constants.h file.
  string last_error_code = 5;

  // Indicates whether DLC is marked verified. Can be used to determine
  // whether DLC is available on disk and can be mounted immediately.
  bool is_verified = 6;

  // The location where the active DLC image is stored (if installed).
  string image_path = 7;
}

// This is the message that is returned from DLC Service via |GetInstalled|
// method.
message DlcStateList {
  repeated DlcState states = 1;
}