Dedup configs by UUID instead of server IP

Author: Delta-Kronecker

src/parser.go

@@ -771,31 +771,27 @@ func coreIdentity(line, protocol string) string {
 		if !strings.HasPrefix(data, "{") {
 			if decoded, err := decodeBase64([]byte(data)); err == nil {
 				var d struct {
-					Add  string      `json:"add"`
-					Port interface{} `json:"port"`
-					ID   string      `json:"id"`
+					ID string `json:"id"`
 				}
-				if json.Unmarshal([]byte(decoded), &d) == nil && d.Add != "" {
-					return fmt.Sprintf("vmess://%s:%v#%s", d.Add, d.Port, d.ID)
+				if json.Unmarshal([]byte(decoded), &d) == nil && d.ID != "" {
+					return "vmess://" + normalizeUUID(d.ID)
 				}
 			}
 		}
 
 		if strings.HasPrefix(data, "{") {
 			var d struct {
-				Add  string      `json:"add"`
-				Port interface{} `json:"port"`
-				ID   string      `json:"id"`
+				ID string `json:"id"`
 			}
-			if json.Unmarshal([]byte(data), &d) == nil && d.Add != "" {
-				return fmt.Sprintf("vmess://%s:%v#%s", d.Add, d.Port, d.ID)
+			if json.Unmarshal([]byte(data), &d) == nil && d.ID != "" {
+				return "vmess://" + normalizeUUID(d.ID)
 			}
 		}
 
 		if atIdx := strings.Index(data, "@"); atIdx != -1 {
-			u, err := url.Parse("vmess://" + data)
-			if err == nil && u.Hostname() != "" {
-				return fmt.Sprintf("vmess://%s:%s#%s", u.Hostname(), u.Port(), u.User.Username())
+			uuid := normalizeUUID(data[:atIdx])
+			if uuid != "" {
+				return "vmess://" + uuid
 			}
 		}
 
@@ -815,11 +811,17 @@ func coreIdentity(line, protocol string) string {
 		}
 		return fmt.Sprintf("ssr://%s:%s", parts[0], parts[1])
 	default:
+		// vless, trojan, ss, hy, hy2, tuic — identity is the credential
+		// (uuid/password/auth), not the server IP
 		u, err := url.Parse(sanitizeProxyURL(line))
-		if err != nil || u.Hostname() == "" {
+		if err != nil || u.Hostname() == "" || u.User == nil {
 			return line
 		}
-		return fmt.Sprintf("%s://%s@%s:%s", protocol, u.User.String(), u.Hostname(), u.Port())
+		cred := normalizeUUID(u.User.Username())
+		if cred == "" {
+			return line
+		}
+		return fmt.Sprintf("%s://%s", protocol, cred)
 	}
 }