package autorest

// Copyright 2017 Microsoft Corporation

//

//  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.

import (

	"bytes"

	"io"

	"io/ioutil"

	"net/http"

)

// NewRetriableRequest returns a wrapper around an HTTP request that support retry logic.

func NewRetriableRequest(req *http.Request) *RetriableRequest {

	return &RetriableRequest{req: req}

}

// Request returns the wrapped HTTP request.

func (rr *RetriableRequest) Request() *http.Request {

	return rr.req

}

func (rr *RetriableRequest) prepareFromByteReader() (err error) {

	// fall back to making a copy (only do this once)

	b := []byte{}

	if rr.req.ContentLength > 0 {

		b = make([]byte, rr.req.ContentLength)

		_, err = io.ReadFull(rr.req.Body, b)

		if err != nil {

			return err

		}

	} else {

		b, err = ioutil.ReadAll(rr.req.Body)

		if err != nil {

			return err

		}

	}

	rr.br = bytes.NewReader(b)

	rr.req.Body = ioutil.NopCloser(rr.br)

	return err

}