package video_server

import (
	"fmt"
	"io"
	"os"
	"os/exec"
	"path/filepath"
	"sort"
	"strconv"
	"strings"
	"time"

	"FireLeave_tool/logger"
)

// MergeVideo merges nearby raw video clips with ffmpeg.
func MergeVideo(deviceUUID string, alarmTime int64) (mergedPath string, err error) {
	return mergeVideo(deviceUUID, deviceUUID, alarmTime)
}

// MergeVideoFromDirectory reads clips from one device directory while naming
// the uploaded file with the real device UUID.
func MergeVideoFromDirectory(videoDirectoryUUID, uploadDeviceUUID string, alarmTime int64) (mergedPath string, err error) {
	return mergeVideo(videoDirectoryUUID, uploadDeviceUUID, alarmTime)
}

func mergeVideo(deviceUUID, uploadDeviceUUID string, alarmTime int64) (mergedPath string, err error) {
	startTime := time.Now()
	logger.Logger.Printf("[%.3f] Start video merge (DeviceUUID=%s, alarmTime=%d)", time.Since(startTime).Seconds(), deviceUUID, alarmTime)

	// Guard the merge path so one bad video cannot crash the process.
	defer func() {
		if recovered := recover(); recovered != nil {
			logger.Logger.Printf("[%.3f] Merge video panic: %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), recovered, deviceUUID)
			mergedPath = ""
			err = fmt.Errorf("merge video panic: %v", recovered)
		}
	}()

	videoDir := fmt.Sprintf("/usr/data/camera/%s", deviceUUID)
	logger.Logger.Printf("[%.3f] Check video directory: %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), videoDir, deviceUUID)
	if _, err := os.Stat(videoDir); os.IsNotExist(err) {
		logger.Logger.Printf("[%.3f] Video directory does not exist: %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), videoDir, deviceUUID)
		return "", fmt.Errorf("video directory not exist: %s", videoDir)
	} else if err != nil {
		logger.Logger.Printf("[%.3f] Check video directory failed: %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), err, deviceUUID)
		return "", fmt.Errorf("check video directory failed: %v", err)
	}
	logger.Logger.Printf("[%.3f] Video directory is ready: %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), videoDir, deviceUUID)

	logger.Logger.Printf("[%.3f] Align alarm time to 10-second boundary (DeviceUUID=%s, alarmTime=%d)", time.Since(startTime).Seconds(), deviceUUID, alarmTime)
	alarmTimeAligned := alignTo10Seconds(alarmTime)
	alarmTimeStr := time.Unix(alarmTimeAligned, 0).Format("20060102150405")
	logger.Logger.Printf("[%.3f] Time aligned: alarmTime=%d aligned=%d (DeviceUUID=%s)", time.Since(startTime).Seconds(), alarmTime, alarmTimeAligned, deviceUUID)

	beforeTime := alarmTimeAligned - 10
	afterTime := alarmTimeAligned + 10

	beforeStr := time.Unix(beforeTime, 0).Format("20060102150405")
	afterStr := time.Unix(afterTime, 0).Format("20060102150405")

	targetNames := []string{beforeStr, alarmTimeStr, afterStr}

	videoFiles := []string{}
	logger.Logger.Printf("[%.3f] Search expected video files (DeviceUUID=%s)", time.Since(startTime).Seconds(), deviceUUID)
	missingVideos := []string{}
	for _, name := range targetNames {
		if path, ok := findVideoFileForTimestamp(videoDir, name); ok {
			videoFiles = append(videoFiles, path)
			logger.Logger.Printf("[%.3f] Found video: %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), filepath.Base(path), deviceUUID)
		} else {
			missingVideos = append(missingVideos, name+".mp4/.h264")
		}
	}
	if len(missingVideos) > 0 {
		logger.Logger.Printf("[%.3f] Missing expected videos: %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), strings.Join(missingVideos, ","), deviceUUID)
	}

	logger.Logger.Printf("[%.3f] Found %d expected video files, searching fallbacks if needed (DeviceUUID=%s)", time.Since(startTime).Seconds(), len(videoFiles), deviceUUID)
	if len(videoFiles) < 3 {
		logger.Logger.Printf("[%.3f] Less than 3 expected videos found, scan directory for fallback files (DeviceUUID=%s)", time.Since(startTime).Seconds(), deviceUUID)
		allFiles, err := os.ReadDir(videoDir)
		if err != nil {
			logger.Logger.Printf("[%.3f] Read video directory failed: %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), err, deviceUUID)
		} else {
			logger.Logger.Printf("[%.3f] Directory contains %d files (DeviceUUID=%s)", time.Since(startTime).Seconds(), len(allFiles), deviceUUID)
			var candidates []struct {
				path string
				ts   int64
			}
			for _, f := range allFiles {
				if !f.IsDir() && isSupportedRawVideoFile(f.Name()) {
					if ts, err := parseSimpleTimestamp(f.Name()); err == nil {
						candidates = append(candidates, struct {
							path string
							ts   int64
						}{filepath.Join(videoDir, f.Name()), ts})
					}
				}
			}
			logger.Logger.Printf("[%.3f] Found %d fallback candidate files (DeviceUUID=%s)", time.Since(startTime).Seconds(), len(candidates), deviceUUID)
			targets := []int64{beforeTime, alarmTimeAligned, afterTime}
			for _, target := range targets {
				if containsTimestamp(videoFiles, target) {
					continue
				}
				closest := findClosest(candidates, target)
				if closest != "" && !contains(videoFiles, closest) {
					videoFiles = append(videoFiles, closest)
					logger.Logger.Printf("[%.3f] Using fallback: %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), filepath.Base(closest), deviceUUID)
				}
			}
		}
	}

	logger.Logger.Printf("[%.3f] Collected %d video files for merge (DeviceUUID=%s)", time.Since(startTime).Seconds(), len(videoFiles), deviceUUID)
	if len(videoFiles) < 2 {
		logger.Logger.Printf("[%.3f] Not enough video files, need at least 2 (DeviceUUID=%s)", time.Since(startTime).Seconds(), deviceUUID)
		return "", fmt.Errorf("insufficient video files: %d", len(videoFiles))
	}

	logger.Logger.Printf("[%.3f] Sort video files by timestamp (DeviceUUID=%s)", time.Since(startTime).Seconds(), deviceUUID)
	sort.Slice(videoFiles, func(i, j int) bool {
		left, leftErr := getTimestampFromPath(videoFiles[i])
		right, rightErr := getTimestampFromPath(videoFiles[j])
		if leftErr != nil || rightErr != nil {
			return videoFiles[i] < videoFiles[j]
		}
		return left < right
	})

	logger.Logger.Printf("[%.3f] Merging %d videos (DeviceUUID=%s):", time.Since(startTime).Seconds(), len(videoFiles), deviceUUID)
	for i, f := range videoFiles {
		logger.Logger.Printf("[%.3f]   [%d] %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), i, filepath.Base(f), deviceUUID)
	}

	outputFile := fmt.Sprintf("%s.mp4_joined.mp4", alarmTimeStr)
	joinedPath := filepath.Join(videoDir, outputFile)
	logger.Logger.Printf("[%.3f] Output temp file: %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), joinedPath, deviceUUID)

	logger.Logger.Printf("[%.3f] Remove old output file if present (DeviceUUID=%s)", time.Since(startTime).Seconds(), deviceUUID)
	if err := os.Remove(joinedPath); err != nil && !os.IsNotExist(err) {
		logger.Logger.Printf("[%.3f] Failed to remove old output file %s: %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), joinedPath, err, deviceUUID)
	} else if err == nil {
		logger.Logger.Printf("[%.3f] Old output file removed: %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), joinedPath, deviceUUID)
	}

	args := []string{"-hide_banner", "-loglevel", "error", "-y"}
	if allH264Files(videoFiles) {
		rawJoinedPath := filepath.Join(videoDir, fmt.Sprintf("%s_joined.h264", alarmTimeStr))
		logger.Logger.Printf("[%.3f] Concatenate H264 files in timestamp order: %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), rawJoinedPath, deviceUUID)
		if err := concatenateFiles(rawJoinedPath, videoFiles); err != nil {
			logger.Logger.Printf("[%.3f] Concatenate H264 files failed: %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), err, deviceUUID)
			return "", fmt.Errorf("concatenate H264 files failed: %v", err)
		}
		defer os.Remove(rawJoinedPath)

		args = append(args,
			"-fflags", "+genpts",
			"-f", "h264",
			"-i", rawJoinedPath,
			"-c:v", "copy",
			"-movflags", "+faststart",
			joinedPath,
		)
	} else {
		concatListPath := filepath.Join(videoDir, fmt.Sprintf("%s_ffmpeg_concat.txt", alarmTimeStr))
		if err := writeFFmpegConcatList(concatListPath, videoFiles); err != nil {
			logger.Logger.Printf("[%.3f] Create ffmpeg concat list failed: %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), err, deviceUUID)
			return "", fmt.Errorf("create ffmpeg concat list failed: %v", err)
		}
		defer os.Remove(concatListPath)

		args = append(args,
			"-f", "concat",
			"-safe", "0",
			"-i", concatListPath,
			"-c", "copy",
			"-movflags", "+faststart",
			joinedPath,
		)
	}
	cmd := exec.Command("ffmpeg", args...)
	cmd.Env = ffmpegCleanEnv()
	cmd.Stdout = logger.Logger.Writer()
	cmd.Stderr = logger.Logger.Writer()
	logger.Logger.Printf("[%.3f] Run merge command: %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), cmd.Args, deviceUUID)

	mergeStartTime := time.Now()
	if err := cmd.Run(); err != nil {
		logger.Logger.Printf("[%.3f] Merge command failed (elapsed=%.3fs): %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), time.Since(mergeStartTime).Seconds(), err, deviceUUID)
		return "", fmt.Errorf("ffmpeg merge failed: %v", err)
	}
	logger.Logger.Printf("[%.3f] Merge command succeeded (elapsed=%.3fs) (DeviceUUID=%s)", time.Since(startTime).Seconds(), time.Since(mergeStartTime).Seconds(), deviceUUID)

	logger.Logger.Printf("[%.3f] Verify merged file: %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), joinedPath, deviceUUID)
	if _, err := os.Stat(joinedPath); err != nil {
		logger.Logger.Printf("[%.3f] Output file not created: %s, error: %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), joinedPath, err, deviceUUID)
		return "", fmt.Errorf("output file not created: %s, error: %v", joinedPath, err)
	}

	info, err := os.Stat(joinedPath)
	if err != nil {
		logger.Logger.Printf("[%.3f] Stat merged file failed: %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), err, deviceUUID)
		return "", fmt.Errorf("stat output file failed: %v", err)
	}
	logger.Logger.Printf("[%.3f] Merged file created: %s (size: %d bytes) (DeviceUUID=%s)", time.Since(startTime).Seconds(), outputFile, info.Size(), deviceUUID)

	logger.Logger.Printf("[%.3f] Move merged file to /data/upload (DeviceUUID=%s)", time.Since(startTime).Seconds(), deviceUUID)
	t := time.Unix(alarmTimeAligned, 0)
	year, month, day := t.Date()
	timestampPart := fmt.Sprintf("%d-%d-%d-%d", year, int(month), day, alarmTimeAligned)
	finalName := fmt.Sprintf("%s-%s.MP4", uploadDeviceUUID, timestampPart)
	finalPath := filepath.Join("/data/upload", finalName)
	logger.Logger.Printf("[%.3f] Final upload path: %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), finalPath, deviceUUID)

	logger.Logger.Printf("[%.3f] Ensure /data/upload exists (DeviceUUID=%s)", time.Since(startTime).Seconds(), deviceUUID)
	if err := os.MkdirAll("/data/upload", 0755); err != nil {
		logger.Logger.Printf("[%.3f] Create /data/upload failed: %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), err, deviceUUID)
		return "", fmt.Errorf("create /data/upload failed: %v", err)
	}

	logger.Logger.Printf("[%.3f] Copy merged file: %s -> %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), joinedPath, finalPath, deviceUUID)
	copyStartTime := time.Now()
	if err := copyFile(joinedPath, finalPath); err != nil {
		logger.Logger.Printf("[%.3f] Copy merged file failed (elapsed=%.3fs): %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), time.Since(copyStartTime).Seconds(), err, deviceUUID)
		return "", fmt.Errorf("copy failed: %v", err)
	}
	logger.Logger.Printf("[%.3f] Copy merged file succeeded (elapsed=%.3fs) (DeviceUUID=%s)", time.Since(startTime).Seconds(), time.Since(copyStartTime).Seconds(), deviceUUID)

	logger.Logger.Printf("[%.3f] Delete temp merged file: %s (DeviceUUID=%s)", time.Since(startTime).Seconds(), joinedPath, deviceUUID)
	if err := os.Remove(joinedPath); err != nil {
		logger.Logger.Printf("[%.3f] Failed to delete temp file %s: %v (DeviceUUID=%s)", time.Since(startTime).Seconds(), joinedPath, err, deviceUUID)
	} else {
		logger.Logger.Printf("[%.3f] Temp merged file deleted (DeviceUUID=%s)", time.Since(startTime).Seconds(), deviceUUID)
	}

	logger.Logger.Printf("[%.3f] Video merged and moved successfully: %s (DeviceUUID=%s, total=%.3fs)", time.Since(startTime).Seconds(), finalPath, deviceUUID, time.Since(startTime).Seconds())
	return finalPath, nil
}

// containsTimestamp reports whether files include the given timestamp.mp(files []string, ts int64) bool {
func containsTimestamp(files []string, ts int64) bool {
	for _, f := range files {
		timestamp, err := getTimestampFromPath(f)
		if err == nil && timestamp == ts {
			return true
		}
	}
	return false
}

func findVideoFileForTimestamp(videoDir, timestamp string) (string, bool) {
	for _, ext := range []string{".mp4", ".h264"} {
		path := filepath.Join(videoDir, timestamp+ext)
		if _, err := os.Stat(path); err == nil {
			return path, true
		}
	}
	return "", false
}

func isSupportedRawVideoFile(name string) bool {
	if strings.Contains(name, "_joined") {
		return false
	}
	ext := strings.ToLower(filepath.Ext(name))
	return ext == ".mp4" || ext == ".h264"
}

func writeFFmpegConcatList(path string, videoFiles []string) error {
	var builder strings.Builder
	for _, videoFile := range videoFiles {
		escaped := strings.ReplaceAll(videoFile, "'", "'\\''")
		builder.WriteString("file '")
		builder.WriteString(escaped)
		builder.WriteString("'\n")
	}
	return os.WriteFile(path, []byte(builder.String()), 0644)
}

func allH264Files(videoFiles []string) bool {
	for _, videoFile := range videoFiles {
		if !strings.EqualFold(filepath.Ext(videoFile), ".h264") {
			return false
		}
	}
	return len(videoFiles) > 0
}

func concatenateFiles(outputPath string, inputPaths []string) (err error) {
	output, err := os.Create(outputPath)
	if err != nil {
		return err
	}
	defer func() {
		if closeErr := output.Close(); err == nil {
			err = closeErr
		}
		if err != nil {
			_ = os.Remove(outputPath)
		}
	}()

	for _, inputPath := range inputPaths {
		input, openErr := os.Open(inputPath)
		if openErr != nil {
			return fmt.Errorf("open %s: %w", inputPath, openErr)
		}
		_, copyErr := io.Copy(output, input)
		closeErr := input.Close()
		if copyErr != nil {
			return fmt.Errorf("append %s: %w", inputPath, copyErr)
		}
		if closeErr != nil {
			return fmt.Errorf("close %s: %w", inputPath, closeErr)
		}
	}
	return output.Sync()
}

func ffmpegCleanEnv() []string {
	env := os.Environ()
	cleaned := make([]string, 0, len(env))
	for _, item := range env {
		if strings.HasPrefix(item, "LD_LIBRARY_PATH=") {
			continue
		}
		cleaned = append(cleaned, item)
	}
	return cleaned
}

func findClosest(candidates []struct {
	path string
	ts   int64
}, target int64) string {
	var best string
	var minDiff int64 = 1<<63 - 1
	for _, c := range candidates {
		diff := abs(c.ts - target)
		if diff < minDiff {
			minDiff = diff
			best = c.path
		}
	}
	if minDiff <= 30 {
		return best
	}
	return ""
}

func abs(x int64) int64 {
	if x < 0 {
		return -x
	}
	return x
}

func copyFile(src, dst string) error {
	startTime := time.Now()
	logger.Logger.Printf("[%.3f] Start file copy: %s -> %s", time.Since(startTime).Seconds(), src, dst)

	in, err := os.Open(src)
	if err != nil {
		return err
	}
	defer in.Close()

	out, err := os.Create(dst)
	if err != nil {
		return err
	}
	defer out.Close()

	deadline := time.Now().Add(30 * time.Second)
	buf := make([]byte, 1024*1024)
	var written int64
	for {
		if time.Now().After(deadline) {
			_ = out.Close()
			_ = os.Remove(dst)
			logger.Logger.Printf("[%.3f] Copy timed out, removed incomplete file: %s", time.Since(startTime).Seconds(), dst)
			return fmt.Errorf("copy file timeout after %d bytes", written)
		}

		nr, readErr := in.Read(buf)
		if nr > 0 {
			nw, writeErr := out.Write(buf[:nr])
			written += int64(nw)
			if writeErr != nil {
				_ = os.Remove(dst)
				return writeErr
			}
			if nw != nr {
				_ = os.Remove(dst)
				return io.ErrShortWrite
			}
		}
		if readErr == io.EOF {
			break
		}
		if readErr != nil {
			_ = os.Remove(dst)
			return readErr
		}
	}

	if err := out.Sync(); err != nil {
		_ = os.Remove(dst)
		return err
	}

	logger.Logger.Printf("[%.3f] file copy completed: %d bytes", time.Since(startTime).Seconds(), written)
	return nil
}

/*

func copyFile(src, dst string) error {
	startTime := time.Now()
	logger.Logger.Printf("[%.3f] Start file copy: %s -> %s", time.Since(startTime).Seconds(), src, dst)

	in, err := os.Open(src)
	if err != nil {
		return err
	}
	defer in.Close()

	out, err := os.Create(dst)
	if err != nil {
		return err
	}
	defer out.Close()

	deadline := time.Now().Add(30 * time.Second)
	buf := make([]byte, 1024*1024)
	var written int64
	for {
		if time.Now().After(deadline) {
			_ = out.Close()
			_ = os.Remove(dst)
			logger.Logger.Printf("[%.3f] Copy timed out, removed incomplete file: %s", time.Since(startTime).Seconds(), dst)
			return fmt.Errorf("copy file timeout after %d bytes", written)
		}

		nr, readErr := in.Read(buf)
		if nr > 0 {
			nw, writeErr := out.Write(buf[:nr])
			written += int64(nw)
			if writeErr != nil {
				_ = os.Remove(dst)
				return writeErr
			}
			if nw != nr {
				_ = os.Remove(dst)
				return io.ErrShortWrite
			}
		}
		if readErr == io.EOF {
			break
		}
		if readErr != nil {
			_ = os.Remove(dst)
			return readErr
		}
	}

	if err := out.Sync(); err != nil {
		_ = os.Remove(dst)
		return err
	}

	logger.Logger.Printf("[%.3f] file copy completed: %d bytes", time.Since(startTime).Seconds(), written)
	return nil
}

// alignTo10Seconds 鐏忓棙妞傞梻鏉戭嚠姒绘劕鍩岄張鈧潻鎴犳畱10缁夋帡妫块梾?*/
func alignTo10Seconds(timestamp int64) int64 {
	t := time.Unix(timestamp, 0)
	seconds := t.Second()
	alignedSeconds := (seconds / 10) * 10
	alignedTime := time.Date(t.Year(), t.Month(), t.Day(), t.Hour(), t.Minute(), alignedSeconds, 0, t.Location())
	return alignedTime.Unix()
}

func parseSimpleTimestamp(filename string) (int64, error) {

	nameWithoutExt := strings.TrimSuffix(filename, filepath.Ext(filename))

	if len(nameWithoutExt) != 14 {
		return 0, fmt.Errorf("invalid timestamp filename length: %s", filename)
	}
	year, err := strconv.Atoi(nameWithoutExt[0:4])

	// 鐟欙絾鐎介弮鍫曟？閹?	year, err := strconv.Atoi(nameWithoutExt[0:4])
	if err != nil {
		return 0, fmt.Errorf("invalid year in filename %s: %w", filename, err)
	}
	month, err := strconv.Atoi(nameWithoutExt[4:6])
	if err != nil {
		return 0, fmt.Errorf("invalid month in filename %s: %w", filename, err)
	}
	day, err := strconv.Atoi(nameWithoutExt[6:8])
	if err != nil {
		return 0, fmt.Errorf("invalid day in filename %s: %w", filename, err)
	}
	hour, err := strconv.Atoi(nameWithoutExt[8:10])
	if err != nil {
		return 0, fmt.Errorf("invalid hour in filename %s: %w", filename, err)
	}
	minute, err := strconv.Atoi(nameWithoutExt[10:12])
	if err != nil {
		return 0, fmt.Errorf("invalid minute in filename %s: %w", filename, err)
	}
	second, err := strconv.Atoi(nameWithoutExt[12:14])
	if err != nil {
		return 0, fmt.Errorf("invalid second in filename %s: %w", filename, err)
	}

	t := time.Date(year, time.Month(month), day, hour, minute, second, 0, time.Local)
	return t.Unix(), nil
}

// getTimestampFromPath
func getTimestampFromPath(filePath string) (int64, error) {
	filename := filepath.Base(filePath)
	timestamp, err := parseSimpleTimestamp(filename)
	if err != nil {
		return 0, err
	}
	return timestamp, nil
}

// contains
func contains(slice []string, item string) bool {
	for _, s := range slice {
		if s == item {
			return true
		}
	}
	return false
}

// CleanupOldVideos
func CleanupOldVideos(deviceUUID string) {
	const maxFiles = 10
	videoDir := "/data/upload"
	prefix := fmt.Sprintf("%s_", deviceUUID)

	files, err := os.ReadDir(videoDir)
	if err != nil {
		logger.Logger.Printf("read the signals %s Error: %v", videoDir, err)
		return
	}

	var videoFiles []os.DirEntry
	for _, file := range files {
		if strings.HasPrefix(file.Name(), prefix) && strings.HasSuffix(file.Name(), "_merged.mp4") {
			videoFiles = append(videoFiles, file)
		}
	}

	if len(videoFiles) <= maxFiles {
		return
	}

	sort.Slice(videoFiles, func(i, j int) bool {
		infoI, _ := videoFiles[i].Info()
		infoJ, _ := videoFiles[j].Info()
		return infoI.ModTime().Before(infoJ.ModTime())
	})

	for i := 0; i < len(videoFiles)-maxFiles; i++ {
		filePath := filepath.Join(videoDir, videoFiles[i].Name())
		if err := os.Remove(filePath); err != nil {
			logger.Logger.Printf("Clean up old videos %s Error: %v", filePath, err)
		} else {
			logger.Logger.Printf("Clean up old videos: %s", filePath)
		}
	}
}

// CleanupOldRawVideos
func CleanupOldRawVideos(deviceUUID string) {
	// 濞撳懐鎮婃稉鏄忣啎婢跺洨娲拌ぐ?	cleanupRawVideosDirectory(filepath.Join("/usr/data/camera", deviceUUID))
	cleanupRawVideosDirectory(filepath.Join("/usr/data/camera", deviceUUID))

	// 濞撳懐鎮婇悘顐ゅ姍濡偓濞村娲拌ぐ?	cleanupRawVideosDirectory(filepath.Join("/usr/data/camera", deviceUUID+"_fire_check"))
	cleanupRawVideosDirectory(filepath.Join("/usr/data/camera", deviceUUID+"_fire_check"))
}

func cleanupRawVideosDirectory(rawDir string) {
	if _, err := os.Stat(rawDir); os.IsNotExist(err) {
		return
	}

	files, err := os.ReadDir(rawDir)
	if err != nil {
		logger.Logger.Printf("Failed to read the original video directory %s: %v", rawDir, err)
		return
	}

	var videoFiles []string
	for _, file := range files {
		if !file.IsDir() && filepath.Ext(file.Name()) == ".mp4" {
			videoFiles = append(videoFiles, filepath.Join(rawDir, file.Name()))
		}
	}

	if len(videoFiles) <= 60 {
		return // 娑撳秷绉存潻?0閺夆槄绱濇稉宥嗙閻?	}
	}

	sort.Slice(videoFiles, func(i, j int) bool {
		fi, _ := os.Stat(videoFiles[i])
		fj, _ := os.Stat(videoFiles[j])
		return fi.ModTime().Before(fj.ModTime())
	})

	for i := 0; i < len(videoFiles)-60; i++ {
		if err := os.Remove(videoFiles[i]); err != nil {
			logger.Logger.Printf("Failed to delete the old original video %s: %v", videoFiles[i], err)
		} else {
			logger.Logger.Printf("Clear the old original videos: %s", videoFiles[i])
		}
	}
}