package fs

import (
	"ZhenTuLocalPassiveAdapter/config"
	"ZhenTuLocalPassiveAdapter/dto"
	"ZhenTuLocalPassiveAdapter/util"
	"fmt"
	"os"
	"sort"
	"time"
)

type LocalAdapter struct {
	StorageConfig config.StorageConfig
}

func (l *LocalAdapter) GetFileList(path string) ([]dto.File, error) {
	if l.StorageConfig.Path == "" {
		return nil, fmt.Errorf("未配置存储路径")
	}
	if path == "" {
		path = "/"
	}
	if path[0] != '/' {
		path = "/" + path
	}
	if path[len(path)-1] != '/' {
		path = path + "/"
	}
	// 读取文件夹下目录
	files, err := os.ReadDir(l.StorageConfig.Path + path)
	if err != nil {
		return nil, err
	}

	var fileList []dto.File
	for _, file := range files {
		if file.IsDir() {
			continue
		}
		if !util.IsVideoFile(file.Name()) {
			continue
		}
		info, err := file.Info()
		if err != nil {
			continue
		}
		// TODO: 0点左右会出问题
		relDt := info.ModTime()
		startTime, stopTime, err := util.ParseStartStopTime(info.Name(), relDt)
		if err != nil {
			continue
		}
		if startTime.Equal(stopTime) {
			stopTime = stopTime.Add(time.Second * time.Duration(config.Config.Record.Duration))
		}
		fileList = append(fileList, dto.File{
			BasePath:  l.StorageConfig.Path,
			Name:      file.Name(),
			Path:      path,
			Url:       fmt.Sprintf("%s%s%s", l.StorageConfig.Path, path, file.Name()),
			StartTime: startTime,
			EndTime:   stopTime,
		})
		sort.Slice(fileList, func(i, j int) bool {
			return fileList[i].StartTime.Before(fileList[j].StartTime)
		})
	}
	return fileList, nil
}