ft/adds util funcs

util/random.go

@@ -0,0 +1,60 @@
+package util
+
+import (
+	"math/rand"
+	"strings"
+)
+
+const alphabet = "abcdefghijklmnopqrstuvwxyz"
+const numbers = "0123456789"
+
+// func init() {
+// 	rand.Seed(time.Now().UnixNano())
+// }
+
+// RandomInt generates a random number between min and max
+func RandomInt(min, max int64) int64 {
+	return min + rand.Int63n(max-min+1)
+}
+
+// RandomString generates a random string of length n
+func RandomString(n int) string {
+	var sb strings.Builder
+	k := len(alphabet)
+
+	for i := 0; i < n; i++ {
+		c := alphabet[rand.Intn(k)]
+		sb.WriteByte(c)
+	}
+
+	return sb.String()
+}
+
+// RandomPhone generates a random phone number as string
+func RandomPhone() string {
+	var sb strings.Builder
+	k := len(numbers)
+
+	for i := 0; i <= 12; i++ {
+		c := numbers[rand.Intn(k)]
+		sb.WriteByte(c)
+	}
+
+	return sb.String()
+}
+
+// RandomUser generates a random username
+func RandomUser() string {
+	return RandomString(20)
+}
+
+// RandomEmail generates a random email address
+func RandomEmail() string {
+	var s string
+	s += RandomString(10)
+	s += "@"
+	s += RandomString(10)
+	s += "."
+	s += RandomString(2)
+	return s
+}