/**
 * Tencent is pleased to support the open source community by making polaris-go available.
 *
 * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
 *
 * Licensed under the BSD 3-Clause License (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://opensource.org/licenses/BSD-3-Clause
 *
 * 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 config

import (
	"errors"
	"time"

	"github.com/hashicorp/go-multierror"
)

// DefaultRateLimitEnable 默认打开限流能力
var DefaultRateLimitEnable = true

// ProviderConfigImpl 服务提供者配置.
type ProviderConfigImpl struct {
	// 限流配置
	RateLimit *RateLimitConfigImpl `yaml:"rateLimit" json:"rateLimit"`
	// minimum interval between tow register operation
	MinRgisterInterval time.Duration `yaml:"minRegisterInterval" json:"minRegisterInterval"`
}

// GetRateLimit 是否启用限流能力.
func (p *ProviderConfigImpl) GetRateLimit() RateLimitConfig {
	return p.RateLimit
}

// GetMinRegisterInterval get minimum interval between two register operation
func (p *ProviderConfigImpl) GetMinRegisterInterval() time.Duration {
	return p.MinRgisterInterval
}

// Verify 校验配置参数.
func (p *ProviderConfigImpl) Verify() error {
	if nil == p {
		return errors.New("ProviderConfig is nil")
	}
	var errs error
	var err error
	if err = p.RateLimit.Verify(); err != nil {
		errs = multierror.Append(errs, err)
	}
	if p.MinRgisterInterval <= 0 {
		errs = multierror.Append(errs, errors.New("minRegisterInterval should be greater than zero"))
	}
	return errs
}

// SetDefault 设置默认参数.
func (p *ProviderConfigImpl) SetDefault() {
	if nil == p.RateLimit {
		p.RateLimit = &RateLimitConfigImpl{}
	}
	p.RateLimit.SetDefault()
	if p.MinRgisterInterval == 0 {
		p.MinRgisterInterval = DefaultMinRegisterInterval
	}
}

// Init 配置初始化.
func (p *ProviderConfigImpl) Init() {
	p.RateLimit = &RateLimitConfigImpl{}
	p.RateLimit.Init()
}