拆分 main 功能模块

Co-Authored-By: Claude <noreply@anthropic.com>

utils/helpers.go

@@ -0,0 +1,53 @@
+package utils
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+func IntPtr(i int) *int { return &i }
+
+func BoolPtr(v bool) *bool { return &v }
+
+func TruncateString(text string, maxRunes int) string {
+	runes := []rune(strings.TrimSpace(text))
+	if maxRunes <= 0 || len(runes) <= maxRunes {
+		return string(runes)
+	}
+	return string(runes[:maxRunes]) + "..."
+}
+
+func Contains(items []string, target string) bool {
+	for _, item := range items {
+		if strings.TrimSpace(item) == target {
+			return true
+		}
+	}
+	return false
+}
+
+func NewUUID() string {
+	b := make([]byte, 16)
+	_, _ = rand.Read(b)
+	b[6] = (b[6] & 0x0f) | 0x40
+	b[8] = (b[8] & 0x3f) | 0x80
+	return hex.EncodeToString(b[:4]) + "-" + hex.EncodeToString(b[4:6]) + "-" +
+		hex.EncodeToString(b[6:8]) + "-" + hex.EncodeToString(b[8:10]) + "-" +
+		hex.EncodeToString(b[10:])
+}
+
+func ToJSON(s string) string {
+	b, _ := json.Marshal(s)
+	return string(b)
+}
+
+func ToSSE(s string) string {
+	s = strings.ReplaceAll(s, `\`, `\\`)
+	s = strings.ReplaceAll(s, "\n", `\n`)
+	s = strings.ReplaceAll(s, "\r", "")
+	s = strings.ReplaceAll(s, `"`, `\"`)
+	return fmt.Sprintf(`"%s"`, s)
+}