/*
Copyright DTCC 2016 All Rights Reserved.

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 java

import (
	"archive/tar"
	"fmt"
	"strings"

	"errors"

	cutil "github.com/hyperledger/fabric/core/container/util"
	pb "github.com/hyperledger/fabric/protos/peer"
)

//tw is expected to have the chaincode in it from GenerateHashcode.
//This method will just package the dockerfile
func writeChaincodePackage(spec *pb.ChaincodeSpec, tw *tar.Writer) error {
	urlLocation := spec.ChaincodeId.Path
	if urlLocation == "" {
		return errors.New("ChaincodeSpec's path/URL cannot be empty")
	}

	if strings.LastIndex(urlLocation, "/") == len(urlLocation)-1 {
		urlLocation = urlLocation[:len(urlLocation)-1]
	}

	err := cutil.WriteJavaProjectToPackage(tw, urlLocation)
	if err != nil {
		return fmt.Errorf("Error writing Chaincode package contents: %s", err)
	}

	return nil
}