// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// package devicepolicy  provides utility functions for generating Chrome OS
// device policy file and the key files.
package devicepolicy

import "policy_manager/policymanagerproto"

// Manager maintains Chrome OS device policy file and COS device policy file.
type Manager interface {
	// InitDevicePolicy initializes instance's environment to support device
	// policies. Users of the Manager are expected to call the this function
	// before any other device policy related functions. The settings in
	// baseConfig (if not nil) are retained in the generated devicepolicy.
	InitDevicePolicy(baseConfig *policymanagerproto.InstanceConfig) error

	// SetInstanceConfig sets a new device policy from an InstanceConfig. The
	// new policy will atomically replace the existing policy.
	// Must be called after InitDevicePolicy() has been called.
	SetInstanceConfig(config *policymanagerproto.InstanceConfig) error

	// GetInstanceConfig reads the policy file from disk and returns the
	// InstanceConfig proto.
	GetInstanceConfig() (*policymanagerproto.InstanceConfig, error)
}