diff --git a/cmd/server/main.go b/cmd/server/main.go
index 39c9ddf..09de14a 100644
--- a/cmd/server/main.go
+++ b/cmd/server/main.go
@@ -23,6 +23,7 @@ import (
 	"monitoring-tg/internal/aiservice"
 	"monitoring-tg/internal/dbretry"
 
+	commonmw "gitea.estateliga.work/admin/portal-common/middleware"
 	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgxpool"
 	"github.com/minio/minio-go/v7"
@@ -1515,12 +1516,12 @@ func (a *app) readScope(w http.ResponseWriter, r *http.Request, manage bool) (ac
 }
 
 func readAccess(r *http.Request) accessScope {
-	admin := r.Header.Get("X-User-Is-Admin") == "1"
-	deptHead := r.Header.Get("X-User-Is-Department-Head") == "1"
-	canManage := r.Header.Get("X-Monitoring-TG-Can-Manage") == "1"
-	canAuth := r.Header.Get("X-Monitoring-TG-Can-Auth") == "1"
+	admin := commonmw.HeaderBool(r, "X-User-Is-Admin")
+	deptHead := commonmw.HeaderBool(r, "X-User-Is-Department-Head")
+	canManage := commonmw.HeaderBool(r, "X-Monitoring-TG-Can-Manage")
+	canAuth := commonmw.HeaderBool(r, "X-Monitoring-TG-Can-Auth")
 	deptID := strings.TrimSpace(r.Header.Get("X-User-Department-Id"))
-	deptIDs := parseCSVHeader(r.Header.Get("X-User-Department-Ids"))
+	deptIDs := commonmw.HeaderCSV(r, "X-User-Department-Ids")
 	if deptID != "" {
 		deptIDs = appendUniqueString(deptIDs, deptID)
 	}
@@ -1533,19 +1534,6 @@ func readAccess(r *http.Request) accessScope {
 	}
 }
 
-func parseCSVHeader(raw string) []string {
-	raw = strings.TrimSpace(raw)
-	if raw == "" {
-		return nil
-	}
-	parts := strings.Split(raw, ",")
-	out := make([]string, 0, len(parts))
-	for _, part := range parts {
-		out = appendUniqueString(out, strings.TrimSpace(part))
-	}
-	return out
-}
-
 func appendUniqueString(items []string, value string) []string {
 	value = strings.TrimSpace(value)
 	if value == "" {
diff --git a/go.mod b/go.mod
index dde352b..a0b336f 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,7 @@ module monitoring-tg
 go 1.25.7
 
 require (
+	gitea.estateliga.work/admin/portal-common v0.3.0
 	github.com/jackc/pgx/v5 v5.9.1
 	github.com/minio/minio-go/v7 v7.2.0
 )
diff --git a/go.sum b/go.sum
index 77992d7..239db80 100644
--- a/go.sum
+++ b/go.sum
@@ -1,3 +1,5 @@
+gitea.estateliga.work/admin/portal-common v0.3.0 h1:xpr9UeLXk5pCcNXcTVGZzJZr0Ni7An7DV0OkuYv9qVM=
+gitea.estateliga.work/admin/portal-common v0.3.0/go.mod h1:C860q6g38KVMsv+mKv6k1Vm7smVRCycl+N6r63TElnk=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=