fix lint

pkg/utils/format.go

@@ -1,3 +1,4 @@
+// Package utils provides shared formatting and string helper functions.
 package utils
 
 import (
@@ -5,48 +6,59 @@ import (
 	"strconv"
 )
 
+const (
+	secondsPerYear   = 31104000 // 360 days
+	secondsPerMonth  = 2592000  // 30 days
+	secondsPerDay    = 86400
+	secondsPerHour   = 3600
+	secondsPerMinute = 60
+)
+
 var sizeKB = 1024
 var sizeMB = sizeKB * 1024
 var sizeGB = sizeMB * 1024
 
+// Bytes2Size converts a byte count to a human-readable string with unit (B, KB, MB, GB).
 func Bytes2Size(num int64) string {
 	numStr := ""
 	unit := "B"
-	if num/int64(sizeGB) > 1 {
+	switch {
+	case num/int64(sizeGB) > 1:
 		numStr = fmt.Sprintf("%.2f", float64(num)/float64(sizeGB))
 		unit = "GB"
-	} else if num/int64(sizeMB) > 1 {
+	case num/int64(sizeMB) > 1:
 		numStr = fmt.Sprintf("%d", int(float64(num)/float64(sizeMB)))
 		unit = "MB"
-	} else if num/int64(sizeKB) > 1 {
+	case num/int64(sizeKB) > 1:
 		numStr = fmt.Sprintf("%d", int(float64(num)/float64(sizeKB)))
 		unit = "KB"
-	} else {
+	default:
 		numStr = fmt.Sprintf("%d", num)
 	}
 	return numStr + " " + unit
 }
 
+// Seconds2Time converts a number of seconds to a human-readable Chinese duration string.
 func Seconds2Time(num int) (time string) {
-	if num/31104000 > 0 {
-		time += strconv.Itoa(num/31104000) + " 年 "
-		num %= 31104000
+	if num/secondsPerYear > 0 {
+		time += strconv.Itoa(num/secondsPerYear) + " 年 "
+		num %= secondsPerYear
 	}
-	if num/2592000 > 0 {
-		time += strconv.Itoa(num/2592000) + " 个月 "
-		num %= 2592000
+	if num/secondsPerMonth > 0 {
+		time += strconv.Itoa(num/secondsPerMonth) + " 个月 "
+		num %= secondsPerMonth
 	}
-	if num/86400 > 0 {
-		time += strconv.Itoa(num/86400) + " 天 "
-		num %= 86400
+	if num/secondsPerDay > 0 {
+		time += strconv.Itoa(num/secondsPerDay) + " 天 "
+		num %= secondsPerDay
 	}
-	if num/3600 > 0 {
-		time += strconv.Itoa(num/3600) + " 小时 "
-		num %= 3600
+	if num/secondsPerHour > 0 {
+		time += strconv.Itoa(num/secondsPerHour) + " 小时 "
+		num %= secondsPerHour
 	}
-	if num/60 > 0 {
-		time += strconv.Itoa(num/60) + " 分钟 "
-		num %= 60
+	if num/secondsPerMinute > 0 {
+		time += strconv.Itoa(num/secondsPerMinute) + " 分钟 "
+		num %= secondsPerMinute
 	}
 	time += strconv.Itoa(num) + " 秒"
 	return