feat: add audit-trails and view-audit-trail components (#406)

Fixes #404

src/app/system/system.service.ts

@@ -352,4 +352,43 @@ export class SystemService {
     return this.http.delete(`/reports/${reportId}`);
   }
 
+  /**
+   * @param {any} filterBy Properties by which entries should be filtered.
+   * @param {string} orderBy Property by which entries should be sorted.
+   * @param {string} sortOrder Sort order: ascending or descending.
+   * @param {number} offset Page offset.
+   * @param {number} limit Number of entries within the page.
+   * @returns {Observable<any>} Audit Trails.
+   */
+  getAuditTrails(filterBy: any, orderBy: string, sortOrder: string, offset: number, limit: number): Observable<any> {
+    let httpParams = new HttpParams()
+      .set('offset', offset.toString())
+      .set('limit', limit.toString())
+      .set('sortOrder', sortOrder)
+      .set('orderBy', orderBy)
+      .set('paged', 'true');
+    // filterBy: actionName, entityName, resourceId, makerId, makerDateTimeFrom, makerDateTimeTo, checkerId, checkerDateTimeFrom, checkerDateTimeTo, processingResult
+    filterBy.forEach(function (filter: any) {
+      if (filter.value !== '') {
+        httpParams = httpParams.set(filter.type, filter.value);
+      }
+    });
+    return this.http.get('/audits', { params: httpParams });
+  }
+
+  /**
+   * @param {string} auditTrailId Audit Trail ID.
+   * @returns {Observable<any>}
+   */
+  getAuditTrail(auditTrailId: string): Observable<any> {
+    return this.http.get(`/audits/${auditTrailId}`);
+  }
+
+  /**
+   * @returns {Observable<any>} Audit Trail Search Template.
+   */
+  getAuditTrailSearchTemplate(): Observable<any> {
+    return this.http.get('/audits/searchtemplate');
+  }
+
 }