(Delphi ActiveX) WhatsApp - Change a User Password

Demonstrates how to change the password for a WhatsApp Business API user account.

For more information, see https://developers.facebook.com/docs/whatsapp/api/users/manage

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
success: Integer;
json: TChilkatJsonObject;
sbRequestBody: TChilkatStringBuilder;
resp: IChilkatHttpResponse;
sbResponseBody: TChilkatStringBuilder;
jResp: TChilkatJsonObject;
respStatusCode: Integer;
username: WideString;
i: Integer;
count_i: Integer;

begin
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

http := TChilkatHttp.Create(Self);

// Implements the following CURL command:

// curl -X PUT https://example.com/v1/users/username \
//   -H "Authorization: Bearer your-auth-token" \
//   -d '{"password": "new-password"}'

// The following JSON is sent in the request body.

// {
//   "password": "new-password"
// }

json := TChilkatJsonObject.Create(Self);
json.UpdateString('password','new-password');

// Adds the "Authorization: Bearer your-auth-token" header.
http.AuthToken := 'your-auth-token';

sbRequestBody := TChilkatStringBuilder.Create(Self);
json.EmitSb(sbRequestBody.ControlInterface);

resp := http.PTextSb('PUT','https://example.com/v1/users/username',sbRequestBody.ControlInterface,'utf-8','application/json',0,0);
if (http.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

sbResponseBody := TChilkatStringBuilder.Create(Self);
resp.GetBodySb(sbResponseBody.ControlInterface);
jResp := TChilkatJsonObject.Create(Self);
jResp.LoadSb(sbResponseBody.ControlInterface);
jResp.EmitCompact := 0;

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(jResp.Emit());

respStatusCode := resp.StatusCode;
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(resp.Header);
    Memo1.Lines.Add('Failed.');

    Exit;
  end;

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// {
//   "users": [
//     {
//       "username": "username"
//     }
//   ]
// }

// Sample code for parsing the JSON response...

i := 0;
count_i := jResp.SizeOfArray('users');
while i < count_i do
  begin
    jResp.I := i;
    username := jResp.StringOf('users[i].username');
    i := i + 1;
  end;
end;