AI rule node: make name of the AI settings unique within the scope of the tenant

application/src/main/data/upgrade/basic/schema_update.sql

@@ -22,5 +22,6 @@ CREATE TABLE ai_settings (
     name         VARCHAR(255)  NOT NULL,
     provider     VARCHAR(255)  NOT NULL,
     model        VARCHAR(255)  NOT NULL,
-    api_key      VARCHAR(1000) NOT NULL
+    api_key      VARCHAR(1000) NOT NULL,
+    CONSTRAINT ai_settings_name_unq_key UNIQUE (tenant_id, name)
 );

common/data/src/main/java/org/thingsboard/server/common/data/ai/AiSettings.java

@@ -58,7 +58,7 @@ public final class AiSettings extends BaseData<AiSettingsId> implements HasTenan
     @Schema(
             requiredMode = Schema.RequiredMode.REQUIRED,
             accessMode = Schema.AccessMode.READ_WRITE,
-            description = "Human-readable name of the AI settings",
+            description = "Human-readable name of the AI settings; must be unique within the scope of the tenant",
             example = "Default AI Settings"
     )
     String name;

dao/src/main/java/org/thingsboard/server/dao/ai/AiSettingsServiceImpl.java

@@ -28,6 +28,7 @@ import org.thingsboard.server.common.data.page.PageLink;
 
 import java.util.Optional;
 
+import static org.thingsboard.server.dao.entity.AbstractEntityService.checkConstraintViolation;
 import static org.thingsboard.server.dao.service.Validator.validatePageLink;
 
 @Service
@@ -38,7 +39,12 @@ class AiSettingsServiceImpl implements AiSettingsService {
 
     @Override
     public AiSettings save(AiSettings aiSettings) {
-        return aiSettingsDao.saveAndFlush(aiSettings.getTenantId(), aiSettings);
+        try {
+            return aiSettingsDao.saveAndFlush(aiSettings.getTenantId(), aiSettings);
+        } catch (Exception e) {
+            checkConstraintViolation(e, "ai_settings_name_unq_key", "AI settings record with such name already exists!");
+            throw e;
+        }
     }
 
     @Override

dao/src/main/resources/sql/schema-entities.sql

@@ -957,5 +957,6 @@ CREATE TABLE IF NOT EXISTS ai_settings (
     name         VARCHAR(255)  NOT NULL,
     provider     VARCHAR(255)  NOT NULL,
     model        VARCHAR(255)  NOT NULL,
-    api_key      VARCHAR(1000) NOT NULL
+    api_key      VARCHAR(1000) NOT NULL,
+    CONSTRAINT ai_settings_name_unq_key UNIQUE (tenant_id, name)
 );