//revive:disable:var-naming

package grpc_http

//revive:enable:var-naming

import (
	"context"
	"strings"

	"google.golang.org/grpc"
	"google.golang.org/grpc/metadata"
)

func Method(ctx context.Context) string {
	method, ok := grpc.Method(ctx)
	if !ok {
		return ""
	}
	return method
}

// FirstHeader retrives the header content from the context.
// If multiples of the header were given, it gives the first.
func FirstHeader(ctx context.Context, header string) string {
	headers, ok := metadata.FromIncomingContext(ctx)
	if !ok {
		return ""
	}
	headerTexts := headers[strings.ToLower(header)]
	if len(headerTexts) < 1 {
		return ""
	}
	return headerTexts[0]
}