package xfile

import (
	"context"
	"fmt"
	"github.com/loveuer/nfflow/internal/model"
	"io"
	"os"
)

type LocalFile struct {
	writer io.Writer
	cfg    struct {
		MaxSize int
		Path    string
	}
}

func (lf *LocalFile) init() error {
	var (
		err error
	)

	if _, err = os.Stat(lf.cfg.Path); !os.IsNotExist(err) {
		return fmt.Errorf("file=%s already exist", lf.cfg.Path)
	}

	if lf.writer, err = os.OpenFile(lf.cfg.Path, os.O_CREATE|os.O_RDWR, 0644); err != nil {
		return fmt.Errorf("openfile=%s err=%v", lf.cfg.Path, err)
	}

	return nil
}

func (lf *LocalFile) Start(ctx context.Context, rowCh <-chan *model.TaskRow, errCh chan<- error) error {
	var (
		err error
	)

	if err = lf.init(); err != nil {
		return err
	}

	return nil
}