/*
 *     Copyright 2022 The Dragonfly 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 example

import (
	"bytes"
	"io"

	"d7y.io/dragonfly/v2/pkg/source"
)

const scheme = "dfs"

var data = "hello world"

type client struct {
}

func init() {
	source.RegisterBuilder(scheme, source.NewPlainResourceClientBuilder(Builder))
}

func Builder(optionYaml []byte) (source.ResourceClient, source.RequestAdapter, []source.Hook, error) {
	return New(), nil, nil, nil
}

func New() source.ResourceClient {
	return &client{}
}

func (c *client) GetContentLength(request *source.Request) (int64, error) {
	return int64(len(data)), nil
}

func (c *client) IsSupportRange(request *source.Request) (bool, error) {
	return false, nil
}

func (c *client) IsExpired(request *source.Request, info *source.ExpireInfo) (bool, error) {
	panic("implement me")
}

func (c *client) Download(request *source.Request) (*source.Response, error) {
	return source.NewResponse(io.NopCloser(bytes.NewBufferString(data))), nil
}

func (c *client) GetLastModified(request *source.Request) (int64, error) {
	panic("implement me")
}