// Licensed to the LF AI & Data foundation 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 contextutil

import "context"

type ctxTenantKey struct{}

// WithTenantID creates a new context that has tenantID injected.
func WithTenantID(ctx context.Context, tenantID string) context.Context {
	if ctx == nil {
		ctx = context.Background()
	}
	return context.WithValue(ctx, ctxTenantKey{}, tenantID)
}

// TenantID tries to retrieve tenantID from the given context.
// If it doesn't exist, an empty string is returned.
func TenantID(ctx context.Context) string {
	if requestID, ok := ctx.Value(ctxTenantKey{}).(string); ok {
		return requestID
	}

	return ""
}