init: init refactor

common/utils/uniqueid/uniqueid.go

@@ -0,0 +1,54 @@
+package uniqueid
+
+import (
+	"crypto/rand"
+	"fmt"
+	"math/big"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+// GenerateID 生成UUID v1作为主键
+func GenerateID() string {
+	uuidV1, err := uuid.NewUUID()
+	if err != nil {
+		panic(err)
+	}
+	return uuidV1.String()
+}
+
+// GenerateName 生成随机用户名
+func GenerateName(prefix string) string {
+	str := uuid.New().String()
+	return prefix + str[6:12]
+}
+
+// GenerateRandomCode 生成随机码(如邀请码)
+func GenerateRandomCode(length int) string {
+	const charset = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	var sb strings.Builder
+	for i := 0; i < length; i++ {
+		n, _ := rand.Int(rand.Reader, big.NewInt(int64(len(charset))))
+		sb.WriteByte(charset[n.Int64()])
+	}
+	return sb.String()
+}
+
+// GenCodeKey 生成邀请码的Redis Key
+func GenCodeKey(userID string) string {
+	return fmt.Sprintf("code:%s", userID)
+}
+
+// GenOrderNo 生成订单号
+func GenOrderNo() string {
+	now := time.Now()
+	timePart := now.Format("20060102150405")
+	machineID := 1
+	pid := now.Nanosecond() % 1000
+	businessPart := fmt.Sprintf("%02d%03d%01d", machineID, pid, now.Second()%10)
+	random1 := fmt.Sprintf("%04d", now.Nanosecond()%10000)
+	random2 := fmt.Sprintf("%04d", (now.Nanosecond()/10000)%10000)
+	return timePart + businessPart + random1 + random2
+}