RetrieveAdminsWebPart.ts

/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* Jarbas Horst wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return.
* ----------------------------------------------------------------------------
*/

import { Version } from '@microsoft/sp-core-library';
import {
  BaseClientSideWebPart,
  IPropertyPaneConfiguration,
  PropertyPaneTextField
} from '@microsoft/sp-webpart-base';
import { HttpClient, HttpClientResponse, IHttpClientOptions } from '@microsoft/sp-http';
import { escape } from '@microsoft/sp-lodash-subset';

import styles from './RetrieveAdmins.module.scss';
import * as strings from 'retrieveAdminsStrings';
import { IRetrieveAdminsWebPartProps } from './IRetrieveAdminsWebPartProps';

export default class RetrieveAdminsWebPart extends BaseClientSideWebPart<IRetrieveAdminsWebPartProps> {
                                                                                                             
  private azureFunctionUrl: string = 'https://jhorst-demo-functions.azurewebsites.net/api/RetrieveAdmins?code=qmhvYC3RWvaPTuLTgZyXUC3JNZH9L2BkDzteUztSjCfA/yXUC3JNZH==';
  
  public render(): void {
    this.domElement.innerHTML = `
      <div class="${styles.retrieveAdmins}">
        <div class="${styles.container}">
          <div class="ms-Grid-row ms-bgColor-themeDark ms-fontColor-white ${styles.row}">
            <div class="ms-Grid-col ms-u-lg10 ms-u-xl8 ms-u-xlPush2 ms-u-lgPush1">
              <span class="ms-font-xl ms-fontColor-white">Welcome to SharePoint!</span>
              <p class="ms-font-l ms-fontColor-white">Here the site collection administrators:</p>
              <p id="adminsContainer"></p>
            </div>
          </div>
        </div>
      </div>`;

      this._retrieveAdministrators();
  }

  protected get dataVersion(): Version {
    return Version.parse('1.0');
  }

  protected getPropertyPaneConfiguration(): IPropertyPaneConfiguration {
    return {
      pages: [
        {
          header: {
            description: strings.PropertyPaneDescription
          },
          groups: [
            {
              groupName: strings.BasicGroupName,
              groupFields: [
                PropertyPaneTextField('description', {
                  label: strings.DescriptionFieldLabel
                })
              ]
            }
          ]
        }
      ]
    };
  }

  private _retrieveAdministrators(): void {
    const reqHeaders: Headers = new Headers();
    reqHeaders.append('Content-type', 'application/json');

    var siteUrl: string = this.context.pageContext.web.absoluteUrl;
    console.log(`The site URL is: '${siteUrl}'`);

    const reqOptions: IHttpClientOptions = {
      headers: reqHeaders,
      body: `{ SiteUrl: '${siteUrl}' }`
    };

    let adminsContainer: HTMLElement = document.getElementById("adminsContainer");

    this.context.httpClient.post(this.azureFunctionUrl, HttpClient.configurations.v1, reqOptions)
    .then((resp: HttpClientResponse) => {
       resp.json().then((jsonResp: string) =>{
         let respMessage = jsonResp;
         if(resp.ok){
          adminsContainer.className = 'ms-font-l ms-fontColor-black';
         }else{
          adminsContainer.className = 'ms-font-l ms-fontColor-red';
         }
        adminsContainer.innerText = respMessage;
      });
    }).catch ((resp: any) => {
      adminsContainer.className = 'ms-font-l ms-fontColor-red';
      adminsContainer.innerText = `Something went wrong :) Error = ${resp.message}`;
    });
  }
}