Pascal (Lazarus/Delphi)

OneDrive -- List Drives

See more OneDrive Examples

Example to retrieve the list of Drive resources available for a target User or Group.

Note: This example requires Chilkat v9.5.0.97 or greater.

Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.JsonObject,
  Chilkat.Http;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  json: TJsonObject;
  http: THttp;
  resp: string;
  i: Integer;
  numDrives: Integer;

begin
  success := False;

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

  //  This example uses the OAuth client credentials flow.
  //  See How to Create an Azure App Registration for OAuth 2.0 Client Credentials

  //  Use your client ID, client secret, and tenant ID in the following lines
  json := TJsonObject.Create;
  json.UpdateString('client_id','2871da2c-8176-4b7f-869b-2311aa82e743');
  json.UpdateString('client_secret','2hu9Q~r5QuryUcEkNbg1btLtnfU1VUXzhSCG6brH');
  json.UpdateString('scope','https://graph.microsoft.com/.default');
  json.UpdateString('token_endpoint','https://login.microsoftonline.com/114d7ed6-71bf-4dbe-a866-748364121bf2/oauth2/v2.0/token');

  http := THttp.Create;
  http.AuthToken := json.Emit();

  //  List drives.
  //  You can specify a {siteId}, {groupId}, or {userId} in the URL
  //  to access document libraries for a group, a site, or a specific user.
  //  Use your specific Id instead of what we're using here:
  http.SetUrlVar('userId','4fe732c3-322e-4a6b-b729-2fd1eb5c6104');
  resp := http.QuickGetStr('https://graph.microsoft.com/v1.0/users/{$userId}/drives');
  if (http.LastMethodSuccess <> True) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  //  The response should be JSON.
  json.EmitCompact := False;
  json.Load(resp);

  //  A successful response should return a status code of 200.
  if (http.LastStatus <> 200) then
    begin
      WriteLn(json.Emit());
      WriteLn('Response status = ' + http.LastStatus);
      Exit;
    end;

  WriteLn(json.Emit());

  //  Sample output:

  //  	{
  //  	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#drives",
  //  	  "value": [
  //  	    {
  //  	      "id": "3a33fceb9b74cc15",
  //  	      "driveType": "personal",
  //  	      "owner": {
  //  	        "user": {
  //  	          "displayName": "Matt Smith",
  //  	          "id": "3a33fceb9b74cc15"
  //  	        }
  //  	      },
  //  	      "quota": {
  //  	        "deleted": 0,
  //  	        "remaining": 1114571275977,
  //  	        "state": "normal",
  //  	        "total": 1115617755136,
  //  	        "used": 1046479159
  //  	      }
  //  	    }
  //  	  ]
  //  	}

  //  Iterate over the drives in the JSON response:
  i := 0;
  numDrives := json.SizeOfArray('value');
  while i < numDrives do
    begin
      json.I := i;
      WriteLn('-- Drive ' + i + 1);
      WriteLn('id: ' + json.StringOf('value[i].id'));
      //  The size will be a number larger than what can fit in a 32-bit integer.
      //  Get the integer as a string..
      WriteLn('total: ' + json.StringOf('value[i].quota.total'));
      i := i + 1;
    end;



  json.Free;
  http.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.