Adding twitch module to display top streams (#805)

utils/text.go

@@ -2,6 +2,9 @@ package utils
 
 import (
 	"fmt"
+	"golang.org/x/text/language"
+	"golang.org/x/text/message"
+	"math"
 	"strings"
 
 	"github.com/rivo/tview"
@@ -72,3 +75,13 @@ func Truncate(src string, maxLen int, withEllipse bool) string {
 	}
 	return src
 }
+
+// Formats number as string with 1000 delimiters and, if necessary, rounds it to 2 decimals
+func PrettyNumber(number float64) string {
+	p := message.NewPrinter(language.English)
+	if number == math.Trunc(number) {
+		return p.Sprintf("%.0f", number)
+	} else {
+		return p.Sprintf("%.2f", number)
+	}
+}

utils/text_test.go

@@ -43,3 +43,17 @@ func Test_Truncate(t *testing.T) {
 	// Only supports non-ellipsed emoji
 	assert.Equal(t, "🌮🚙", Truncate("🌮🚙💥👾", 2, false))
 }
+
+func Test_PrettyNumber(t *testing.T) {
+	assert.Equal(t, "1,000,000", PrettyNumber(1000000))
+	assert.Equal(t, "1,000,000.99", PrettyNumber(1000000.99))
+	assert.Equal(t, "1,000,000", PrettyNumber(1000000.00))
+	assert.Equal(t, "100,000", PrettyNumber(100000))
+	assert.Equal(t, "100,000.01", PrettyNumber(100000.009))
+	assert.Equal(t, "10,000", PrettyNumber(10000))
+	assert.Equal(t, "1,000", PrettyNumber(1000))
+	assert.Equal(t, "1,000", PrettyNumber(1000))
+	assert.Equal(t, "100", PrettyNumber(100))
+	assert.Equal(t, "0", PrettyNumber(0))
+	assert.Equal(t, "0.10", PrettyNumber(0.1))
+}