move unit related constants and functions to common lib

app/common/utils.go

@@ -10,7 +10,6 @@ import (
 	"io"
 	"io/fs"
 	"log"
-	"math"
 	"net/http"
 	"os"
 	"reflect"
@@ -256,33 +255,6 @@ func GetInstancePathFromRequest(c *gin.Context) (paas.InstancePath, error) {
 	return vm_path, nil
 }
 
-func FormatNumber(val int64, base int64) (string, string) {
-	valf := float64(val)
-	basef := float64(base)
-	steps := 0
-	for math.Abs(valf) > basef && steps < 4 {
-		valf /= basef
-		steps++
-	}
-
-	switch base {
-	case 1000:
-		s := fmt.Sprintf("%.4f", valf)
-		s = strings.TrimRight(s, "0")
-		s = strings.TrimRight(s, ".")
-		prefixes := []string{"", "K", "M", "G", "T"}
-		return s, prefixes[steps]
-	case 1024:
-		s := fmt.Sprintf("%.4f", valf)
-		s = strings.TrimRight(s, "0")
-		s = strings.TrimRight(s, ".")
-		prefixes := []string{"", "Ki", "Mi", "Gi", "Ti"}
-		return s, prefixes[steps]
-	default:
-		return "0", ""
-	}
-}
-
 func GetRequestContextFromCookies(auth paas.Auth) map[string]string {
 	return map[string]string{
 		"username":                auth.Username,

app/routes/account.go

@@ -119,7 +119,7 @@ func HandleGETAccount(c *gin.Context) {
 					// create a resource chart for resource depending on resource type
 					switch t := v.(type) {
 					case NumericResource:
-						avail, prefix := common.FormatNumber(t.Total.Avail*t.Multiplier, t.Base)
+						avail, prefix := paas.FormatNumber(t.Total.Avail*t.Multiplier, t.Base)
 						pools[poolname].Resources[category].(map[string]any)[resource] = ResourceChart{
 							Type:     t.Type,
 							Display:  t.Display,
@@ -132,7 +132,7 @@ func HandleGETAccount(c *gin.Context) {
 							ColorHex: InterpolateColorHSV(Green, Red, float64(t.Total.Used)/float64(t.Total.Max)).ToHTML(),
 						}
 					case StorageResource:
-						avail, prefix := common.FormatNumber(t.Total.Avail*t.Multiplier, t.Base)
+						avail, prefix := paas.FormatNumber(t.Total.Avail*t.Multiplier, t.Base)
 						pools[poolname].Resources[category].(map[string]any)[resource] = ResourceChart{
 							Type:     t.Type,
 							Display:  t.Display,

app/routes/backups.go

@@ -96,7 +96,7 @@ func GetInstanceBackups(vm paas.InstancePath, auth paas.Auth) ([]InstanceBackup,
 	}
 
 	for i := range backups {
-		size, prefix := common.FormatNumber(backups[i].Size, 1024)
+		size, prefix := paas.FormatNumber(backups[i].Size, 1024)
 		backups[i].SizeFormatted = fmt.Sprintf("%s %sB", size, prefix)
 
 		t := time.Unix(backups[i].CTime, 0)