chore: add default filters for host and host group queries

- Introduced `HOST_TYPE_FILTER_DEFAULT` and `HOST_GROUP_FILTER_DEFAULT` constants in the `Config` class.
- Updated resolvers to use these defaults when `tag_hostType` or `search_name` arguments are not provided.
- Added corresponding tests to verify default behavior in host and host group queries.
- Added documentation on overriding 'HOST_GROUP_FILTER_DEFAULT' by explicitly setting the 'search_name' argument in the 'allHostGroups' query.
- Explained the usage of the '*' wildcard in 'search_name' with a concrete example for subgroup matching.

src/test/host_query.test.ts

@@ -2,6 +2,7 @@
 import {createResolvers} from "../api/resolvers.js";
 import {zabbixAPI, ZABBIX_EDGE_DEVICE_BASE_GROUP} from "../datasources/zabbix-api.js";
 import {QueryAllHostsArgs, QueryAllDevicesArgs, QueryAllHostGroupsArgs} from "../schema/generated/graphql.js";
+import {Config} from "../common_utils.js";
 
 // Mocking ZabbixAPI
 jest.mock("../datasources/zabbix-api.js", () => ({
@@ -14,6 +15,14 @@ jest.mock("../datasources/zabbix-api.js", () => ({
     ZABBIX_EDGE_DEVICE_BASE_GROUP: "Roadwork"
 }));
 
+// Mocking Config
+jest.mock("../common_utils.js", () => ({
+    Config: {
+        HOST_TYPE_FILTER_DEFAULT: "Roadwork",
+        HOST_GROUP_FILTER_DEFAULT: "Roadwork/%"
+    }
+}));
+
 describe("Host and HostGroup Resolvers", () => {
     let resolvers: any;
 
@@ -94,6 +103,27 @@ describe("Host and HostGroup Resolvers", () => {
         }));
     });
 
+    test("allHostGroups query - uses default search pattern", async () => {
+        const mockGroups = [{ groupid: "10", name: "Roadwork/Group 1" }];
+        (zabbixAPI.post as jest.Mock).mockResolvedValueOnce(mockGroups);
+
+        const args: QueryAllHostGroupsArgs = {};
+        const context = { 
+            zabbixAuthToken: "test-token"
+        };
+
+        const result = await resolvers.Query.allHostGroups(null, args, context);
+
+        expect(result).toEqual(mockGroups);
+        expect(zabbixAPI.post).toHaveBeenCalledWith("hostgroup.get", expect.objectContaining({
+            body: expect.objectContaining({
+                params: expect.objectContaining({
+                    search: { name: ["Roadwork/%"] }
+                })
+            })
+        }));
+    });
+
     test("locations query", async () => {
         const mockLocations = [{ name: "Loc 1", latitude: 1.0, longitude: 2.0 }];
         (zabbixAPI.getLocations as jest.Mock).mockResolvedValueOnce(mockLocations);