fix: add unique constraint to index

internal/database/migration/m202312290900_machine_indeces.go

@@ -0,0 +1,25 @@
+package migration
+
+import (
+	"github.com/go-gormigrate/gormigrate/v2"
+	"gorm.io/gorm"
+)
+
+func m202312290900_machine_indeces() *gormigrate.Migration {
+	return &gormigrate.Migration{
+		ID: "202312290900",
+		Migrate: func(db *gorm.DB) error {
+			type Machine struct {
+				Name    string `gorm:"index:idx_tailnet_id_name,unique,priority:2"`
+				NameIdx uint64 `gorm:"index:idx_tailnet_id_name,unique,sort:desc,priority:3"`
+			}
+
+			db.Migrator().DropIndex(&Machine{}, "idx_tailnet_id_name")
+
+			return db.AutoMigrate(
+				&Machine{},
+			)
+		},
+		Rollback: nil,
+	}
+}

internal/database/migration/migrations.go

@@ -17,6 +17,7 @@ func Migrations() []*gormigrate.Migration {
 		m202212201300_add_user_id_column(),
 		m202212270800_machine_indeces(),
 		m202312271200_account_last_authenticated(),
+		m202312290900_machine_indeces(),
 	}
 	return migrations
 }