From 3fad4189646cca5d6db99ccfe79be695ef765d03 Mon Sep 17 00:00:00 2001
From: Keuin <keuinx@gmail.com>
Date: Sun, 30 Jul 2023 19:04:12 +0800
Subject: Refactor: extract pretty duration to a function. Create `pretty`
 package for creating human friendly strings

---
 common/pretty/bytesize.go      | 19 ++++++++++++
 common/pretty/bytesize_test.go | 24 ++++++++++++++++
 common/pretty/duration.go      | 14 +++++++++
 common/pretty/duration_test.go | 65 ++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 122 insertions(+)
 create mode 100644 common/pretty/bytesize.go
 create mode 100644 common/pretty/bytesize_test.go
 create mode 100644 common/pretty/duration.go
 create mode 100644 common/pretty/duration_test.go

(limited to 'common/pretty')

diff --git a/common/pretty/bytesize.go b/common/pretty/bytesize.go
new file mode 100644
index 0000000..c0bfcbc
--- /dev/null
+++ b/common/pretty/bytesize.go
@@ -0,0 +1,19 @@
+package pretty
+
+import "fmt"
+
+func Bytes(b uint64) string {
+	if b < 1000 {
+		return fmt.Sprintf("%d Byte", b)
+	}
+	if b < 1000_000 {
+		return fmt.Sprintf("%.2f KiB", float64(b)/1024)
+	}
+	if b < 1000_000_000 {
+		return fmt.Sprintf("%.2f MiB", float64(b)/1024/1024)
+	}
+	if b < 1000_000_000_000 {
+		return fmt.Sprintf("%.2f GiB", float64(b)/1024/1024/1024)
+	}
+	return fmt.Sprintf("%.2f TiB", float64(b)/1024/1024/1024/1024)
+}
diff --git a/common/pretty/bytesize_test.go b/common/pretty/bytesize_test.go
new file mode 100644
index 0000000..b83f9c0
--- /dev/null
+++ b/common/pretty/bytesize_test.go
@@ -0,0 +1,24 @@
+package pretty
+
+import (
+	"testing"
+)
+
+func TestBytes(t *testing.T) {
+	tests := []struct {
+		Expected string
+		Actual   string
+	}{
+		{"128 Byte", Bytes(128)},
+		{"128.00 KiB", Bytes(128 * 1024)},
+		{"128.00 MiB", Bytes(128 * 1024 * 1024)},
+		{"128.00 GiB", Bytes(128 * 1024 * 1024 * 1024)},
+		{"128.00 TiB", Bytes(128 * 1024 * 1024 * 1024 * 1024)},
+		{"131072.00 TiB", Bytes(128 * 1024 * 1024 * 1024 * 1024 * 1024)},
+	}
+	for i, tc := range tests {
+		if tc.Expected != tc.Actual {
+			t.Fatalf("Test %v failed: %v", i, tc)
+		}
+	}
+}
diff --git a/common/pretty/duration.go b/common/pretty/duration.go
new file mode 100644
index 0000000..6b4eda4
--- /dev/null
+++ b/common/pretty/duration.go
@@ -0,0 +1,14 @@
+package pretty
+
+import (
+	"fmt"
+	"time"
+)
+
+func Duration(duration time.Duration) string {
+	d := int64(duration.Seconds())
+	h := d / 3600
+	m := (d % 3600) / 60
+	s := d % 60
+	return fmt.Sprintf("%02d:%02d:%02d", h, m, s)
+}
diff --git a/common/pretty/duration_test.go b/common/pretty/duration_test.go
new file mode 100644
index 0000000..94ea2c5
--- /dev/null
+++ b/common/pretty/duration_test.go
@@ -0,0 +1,65 @@
+package pretty
+
+import (
+	"testing"
+	"time"
+)
+
+func TestDuration(t *testing.T) {
+	type args struct {
+		duration time.Duration
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "zero",
+			args: args{0},
+			want: "00:00:00",
+		},
+		{
+			name: "1s",
+			args: args{time.Second},
+			want: "00:00:01",
+		},
+		{
+			name: "2s",
+			args: args{time.Second * 2},
+			want: "00:00:02",
+		},
+		{
+			name: "59s",
+			args: args{time.Second * 59},
+			want: "00:00:59",
+		},
+		{
+			name: "1m",
+			args: args{time.Second * 60},
+			want: "00:01:00",
+		},
+		{
+			name: "1m1s",
+			args: args{time.Second * 61},
+			want: "00:01:01",
+		},
+		{
+			name: "1h",
+			args: args{time.Second * 3600},
+			want: "01:00:00",
+		},
+		{
+			name: "54h7m13s",
+			args: args{time.Hour*54 + time.Minute*7 + time.Second*13},
+			want: "54:07:13",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := Duration(tt.args.duration); got != tt.want {
+				t.Errorf("Duration() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
-- 
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