// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements.  See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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 gcpopts contains shared options for Google Cloud Platform.
package gcpopts

import (
	"context"
	"flag"

	"github.com/apache/beam/sdks/go/pkg/beam/log"
)

var (
	// Project is the Google Cloud Platform project ID.
	Project = flag.String("project", "", "Google Cloud Platform project ID.")
)

// GetProject returns the project, if non empty and exits otherwise.
// Convenience function.
func GetProject(ctx context.Context) string {
	if *Project == "" {
		log.Exit(ctx, "No Google Cloud project specified. Use --project=<project>")
	}
	return *Project
}
