OpenSearch - some progress in migration

src/api/api.ts

@@ -1,15 +1,34 @@
-import initializeAxios from "./axiosSetup";
-import { axiosRequestConfiguration } from "./config";
-import { map } from "rxjs/operators";
-import { defer, Observable } from "rxjs";
-import { AxiosResponse } from "axios";
-// https://ichi.pro/de/so-wickeln-sie-axios-mit-typescript-und-react-in-rxjs-ein-118892823169891
+// Import the necessary modules and functions
+import initializeAxios from "./axiosSetup"; // Function to initialize the Axios instance
+import { axiosRequestConfiguration } from "./config"; // Axios configuration settings
+import { map } from "rxjs/operators"; // Operator to transform the items emitted by an Observable
+import { defer, Observable } from "rxjs"; // RxJS utilities for creating and working with Observables
+import { AxiosResponse } from "axios"; // Axios response type
 
+// Initialize the Axios instance with the provided configuration
 const axiosInstance = initializeAxios(axiosRequestConfiguration);
 
+// Function to make a GET request using Axios wrapped in an Observable
 // eslint-disable-next-line
 const get = <T>(url: string, queryParams?: any): Observable<T> => {
-    return defer(() => axiosInstance.get<T>(url, { params: queryParams })).pipe(map((result: AxiosResponse) => result.data));
+    // Use defer to create an Observable that makes the Axios GET request when subscribed to
+    return defer(() => axiosInstance.get<T>(url, { params: queryParams }))
+        // Use map to transform the Axios response to extract the data property
+        .pipe(map((result: AxiosResponse) => result.data));
 };
 
-export default { get };
+// Function to make a POST request using Axios wrapped in an Observable
+const post = <T>(url: string, body: any, queryParams?: any): Observable<T> => {
+    // Use defer to create an Observable that makes the Axios POST request when subscribed to
+    return defer(() => axiosInstance.post<T>(url, body, {
+        params: queryParams,
+        headers: {
+            'Accept': 'application/json',
+            'Content-Type': 'application/json'
+        }
+    }))
+    .pipe(map((result: AxiosResponse) => result.data)); // Use map to transform the Axios response to extract the data property
+};
+
+// Export the get function as part of the default export
+export default { get, post };