feat: add ConfigurationService for retrieving parametric filter fields and update DahService with MaxResults parameter

Author: joesoc

src/app/services/dah.service.ts

@@ -44,6 +44,7 @@ export class DahService {
       .set('storestate', 'true')
       .set('StoredStateTokenLifetime', '-1')
       .set('print', 'NoResults')
+      .set('MaxResults', '100')
       .set('responseformat', 'simplejson');
 
     return this.http.get<StoreStateResponse>(this.dahUrl, { params }).pipe(

src/app/services/parametric.configuration.service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { ParametricConfigurationService } from './parametric.configuration.service';
+
+describe('ParametricConfigurationService', () => {
+  let service: ParametricConfigurationService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(ParametricConfigurationService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

src/app/services/parametric.configuration.service.ts

@@ -0,0 +1,62 @@
+import { Injectable } from '@angular/core';
+import { HttpClient, HttpParams } from '@angular/common/http';
+import { Observable } from 'rxjs';
+
+export interface IdolFieldResult {
+  FILTER_FIELD_NAME?: string;
+  FILTER_FIELD_DISPLAY_NAME?: string;
+}
+
+export interface IdolResponse {
+  autnresponse: {
+    response: string;
+    responsedata: {
+      hit: {
+        document: {
+          FILTER_FIELD_NAME?: string[];
+          FILTER_FIELD_DISPLAY_NAME?: string[];
+        };
+      }[];
+    };
+  };
+}
+
+@Injectable({
+  providedIn: 'root'
+})
+export class ConfigurationService {
+  private baseUrl = 'api/configure';
+
+  constructor(private http: HttpClient) {}
+
+  /**
+   * Retrieves parametric filters (FILTER_FIELD_NAME and DISPLAY_NAME)
+   * from IDOL Content Engine using a text query.
+   * @param textQuery Query string, e.g. "*" or "PROFILE_NAME:engineering_jobs"
+   */
+  getParametricFilterFields(textQuery: string = '*'): Observable<IdolFieldResult[]> {
+    const params = new HttpParams()
+      .set('action', 'query')
+      .set('text', textQuery)
+      .set('fieldname', 'FILTER_FIELD_NAME,FILTER_FIELD_DISPLAY_NAME')
+      .set('maxresults', '100')
+      .set('outputencoding', 'utf8')
+      .set('FieldText', 'MATCH{True}:IS_ACTIVE')
+      .set('print', 'all');
+
+    return new Observable(observer => {
+      this.http.get<IdolResponse>(this.baseUrl, { params }).subscribe({
+        next: (response) => {
+          const docs = response?.autnresponse?.responsedata?.hit || [];
+          const fields = docs.map(hit => ({
+            FILTER_FIELD_NAME: hit.document.FILTER_FIELD_NAME?.[0],
+            FILTER_FIELD_DISPLAY_NAME: hit.document.FILTER_FIELD_DISPLAY_NAME?.[0]
+          }));
+          observer.next(fields);
+          observer.complete();
+        },
+        error: (err) => observer.error(err)
+      });
+    });
+  }
+}

src/proxy.conf.js

@@ -1,3 +1,5 @@
+const { LogLevel } = require("@angular/compiler-cli");
+
 module.exports = {
   "/api/answerserver": {
     target: "https://answerserver.idoldemos.net:12000",
@@ -27,6 +29,12 @@ module.exports = {
     changeOrigin: true,
     logLevel: "debug"
   },
+  "api/configure": {
+    target : "https://content3.idoldemos.net:9400",
+    secure: false,
+    LogLevel: "debug",
+    pathRewrite: { "^/api/configure": "" }
+  },
   "/api/dah": {
     target: "https://dah.idoldemos.net:9060",
     secure: false,