package pb

import (
	"io/fs"
	"io/ioutil"

	"google.golang.org/protobuf/proto"
	"google.golang.org/protobuf/reflect/protoreflect"
)

// Read protocol buffer from file
func ReadFile(path string, message protoreflect.ProtoMessage) error {
	file, err := ioutil.ReadFile(path)
	if err != nil {
		return err
	}
	if err := proto.Unmarshal(file, message); err != nil {
		return err
	}
	return nil
}

// Write protocol buffer to file
func WriteFile(path string, message protoreflect.ProtoMessage, perm fs.FileMode) error {
	msg, err := proto.Marshal(message)
	if err != nil {
		return err
	}
	if err := ioutil.WriteFile(path, msg, perm); err != nil {
		return err
	}
	return nil
}