(feat) number to K

pkg/bar_chart.go

@@ -45,7 +45,7 @@ func (c *BarChart) GetVertical(xData []string, yData [][]float64, names []string
 				Bottom: DEFAULT_PADDING_BOTTOM,
 			}
 			opt.ValueFormatter = func(f float64) string {
-				return fmt.Sprintf("%.0f%s", f, req.Metric)
+				return fmt.Sprintf("%s %s", NumberToK(&f), req.Metric)
 			}
 			idx := len(opt.SeriesList) - 1
 			if len(opt.SeriesList) > 1 {
@@ -164,7 +164,7 @@ func (c *BarChart) GetHorizontal(xData []string, yData [][]float64, names []stri
 		func(opt *charts.ChartOption) {
 			opt.Theme = req.Theme
 			opt.ValueFormatter = func(f float64) string {
-				return fmt.Sprintf("%.0f%s", f, req.Metric)
+				return fmt.Sprintf("%s %s", NumberToK(&f), req.Metric)
 			}
 		},
 	)

pkg/chart.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"net/http"
 	"net/url"
+	"strconv"
 	"strings"
 
 	"github.com/imroc/req/v3"
@@ -122,3 +123,20 @@ func SetDataIfRemoteURL(req *ChartRequest, allowedRemoteDomains string) error {
 	}
 	return nil
 }
+
+// NumberToK converts a number to a string with 'k' for thousands and 'm' for millions.
+func NumberToK(num *float64) string {
+	if num == nil {
+		return "0"
+	}
+
+	if *num < 1000 {
+		return strconv.FormatFloat(*num, 'f', -1, 64)
+	}
+
+	if *num < 1000000 {
+		return strconv.FormatFloat(*num/1000, 'f', 1, 64) + "k"
+	}
+
+	return strconv.FormatFloat(*num/1000000, 'f', 1, 64) + "m"
+}

pkg/line_chart.go

@@ -40,7 +40,7 @@ func (c *LineChart) Get(xData []string, yData [][]float64, names []string, req *
 				Bottom: DEFAULT_PADDING_BOTTOM * 2,
 			}
 			opt.ValueFormatter = func(f float64) string {
-				return fmt.Sprintf("%.0f%s", f, req.Metric)
+				return fmt.Sprintf("%s %s", NumberToK(&f), req.Metric)
 			}
 			opt.FillArea = req.Fill