// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package cache

type noOpDomainCache struct{}

func (c *noOpDomainCache) GetCacheSize() (sizeOfCacheByName int64, sizeOfCacheByID int64) {
	return 0, 0
}

func (c *noOpDomainCache) GetAllDomain() map[string]*DomainCacheEntry {
	return map[string]*DomainCacheEntry{}
}

func (c *noOpDomainCache) RegisterDomainChangeCallback(
	id string,
	catchUpFn CatchUpFn,
	prepareCallback PrepareCallbackFn,
	callback CallbackFn,
) {
}

func (c *noOpDomainCache) UnregisterDomainChangeCallback(
	id string,
) {
}

func (c *noOpDomainCache) GetDomain(
	name string,
) (*DomainCacheEntry, error) {
	return &DomainCacheEntry{}, nil
}

func (c *noOpDomainCache) GetDomainByID(
	id string,
) (*DomainCacheEntry, error) {
	return &DomainCacheEntry{}, nil
}

func (c *noOpDomainCache) GetDomainID(
	name string,
) (string, error) {
	return "", nil
}

func (c *noOpDomainCache) GetDomainName(
	id string,
) (string, error) {
	return "", nil
}

func (c *noOpDomainCache) getDomain(
	name string,
) (*DomainCacheEntry, error) {
	return &DomainCacheEntry{}, nil
}

func (c *noOpDomainCache) getDomainByID(
	id string,
	deepCopy bool,
) (*DomainCacheEntry, error) {
	return &DomainCacheEntry{}, nil
}

func NewNoOpDomainCache() DomainCache {
	return &noOpDomainCache{}
}

func (c *noOpDomainCache) Start() {}

func (c *noOpDomainCache) Stop() {}
