You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: event_writer_file.go
    path of file: ./repos/gitea/modules/log
    
    the code of the file until where you have to start completion: // Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package log

import (
	"io"

	"code.gitea.io/gitea/modules/util/rotatingfilewriter"
)

type WriterFileOption struct {
	FileName         string
	MaxSize          int64
	LogRotate        bool
	DailyRotate      b
    
func NewEventWriterFile(name string, mode WriterMode) EventWriter {
	w := &eventWriterFile{EventWriterBaseImpl: NewEventWriterBase(name, "file", mode)}
	opt := mode.WriterOption.(WriterFileOption)
	var err error
	w.fileWriter, err = rotatingfilewriter.Open(opt.FileName, &rotatingfilewriter.Options{
		Rotate:           opt.LogRotate,
		MaximumSize:      opt.MaxSize,
		RotateDaily:      opt.DailyRotate,
		KeepDays:         opt.MaxDays,
		Compress:         opt.Compress,
		CompressionLevel: opt.CompressionLevel,
	})
	if err != nil {
		// if the log file can't be opened, what should it do? panic/exit? ignore logs? fallback to stderr?
		// it seems that "fallback to stderr" is slightly better than others ....
		FallbackErrorf("unable to open log file %q: %v", opt.FileName, err)
		w.fileWriter = nopCloser{Writer: LoggerToWriter(FallbackErrorf)}
	}
	w.OutputWriteCloser = w.fileWriter
	return w
}