/*
 * Copyright 2021 CloudWeGo Authors
 *
 * 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 client

import (
	"github.com/cloudwego/kitex/pkg/rpcinfo"
	"github.com/cloudwego/kitex/pkg/rpcinfo/remoteinfo"
)

// ConfigLocks records changing made by options that are not allowed further modifications.
type ConfigLocks struct {
	Bits int
	Tags map[string]struct{}
}

// NewConfigLocks creates a ConfigLocks.
func NewConfigLocks() *ConfigLocks {
	return &ConfigLocks{
		Tags: make(map[string]struct{}),
	}
}

// ApplyLocks applies the locking operations on rpcinfo.RPCConfig and internal.RemoteInfo.
func (cl *ConfigLocks) ApplyLocks(cfg rpcinfo.MutableRPCConfig, svr remoteinfo.RemoteInfo) {
	if cfg != nil {
		cfg.LockConfig(cl.Bits)
	}
	if svr != nil {
		for t := range cl.Tags {
			svr.SetTagLock(t)
		}
	}
}

// Merge merges another ConfigLocks into the current one.
func (cl *ConfigLocks) Merge(c2 *ConfigLocks) {
	cl.Bits |= c2.Bits
	for t := range c2.Tags {
		cl.Tags[t] = struct{}{}
	}
}

// Zero ConfigLocks clear
func (cl *ConfigLocks) Zero() {
	cl.Bits = 0
	for k := range cl.Tags {
		delete(cl.Tags, k)
	}
}
