(Delphi ActiveX) Retrieve the metadata for a DriveItem

See more OneDrive Examples

Fetches the JSON metadata for a DriveItem.

For more information, see https://docs.microsoft.com/en-us/onedrive/developer/rest-api/api/driveitem_get?view=odsp-graph-online

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
json: TChilkatJsonObject;
http: TChilkatHttp;
metaData: WideString;
success: Integer;
odata_context: WideString;
microsoft_graph_downloadUrl: WideString;
createdDateTime: WideString;
cTag: WideString;
eTag: WideString;
id: WideString;
lastModifiedDateTime: WideString;
name: WideString;
size: Integer;
webUrl: WideString;
ratingRating: Integer;
ratingSimpleRating: Integer;
createdByUserDisplayName: WideString;
createdByUserId: WideString;
lastModifiedByUserDisplayName: WideString;
lastModifiedByUserId: WideString;
parentReferenceDriveId: WideString;
parentReferenceDriveType: WideString;
parentReferenceId: WideString;
parentReferenceName: WideString;
parentReferencePath: WideString;
fileMimeType: WideString;
fileHashesSha1Hash: WideString;
fileSystemInfoCreatedDateTime: WideString;
fileSystemInfoLastModifiedDateTime: WideString;
imageHeight: Integer;
imageWidth: Integer;
photoTakenDateTime: WideString;
sharedScope: WideString;
sharedOwnerUserDisplayName: WideString;
sharedOwnerUserId: WideString;

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

// Use your client ID, client secret, and tenant ID in the following lines
json := TChilkatJsonObject.Create(Self);
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 := TChilkatHttp.Create(Self);
http.AuthToken := json.Emit();

// Sends the following GET request:
// GET https://graph.microsoft.com/v1.0/users/{user-id}/drive/root:/{item-path}

// Make sure to automatically follow redirects
http.FollowRedirects := 1;

// This example will get the metadata for /Misc/wildlife/penguins.jpg
http.SetUrlVar('item_path','Misc//penguins.jpg');
http.SetUrlVar('user_id','4fe732c3-322e-4a6b-b729-2fd1eb5c6104');

metaData := http.QuickGetStr('https://graph.microsoft.com/v1.0/users/{$user_id}/drive/root:/{$item_path}');
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

json.EmitCompact := 0;
success := json.Load(metaData);
Memo1.Lines.Add(json.Emit());

// Sample JSON metadata result:

// {
//   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('admin%40chilkat.io')/drive/root/$entity",
//   "@microsoft.graph.downloadUrl": "https://public.dm.files.1drv.com/y4mh0z_Og97O7Q...o2q1HhNBU",
//   "createdDateTime": "2017-06-04T20:40:22.48Z",
//   "cTag": "aYzozQTMzRkNFQjlCNzRDQzE1ITQ4NzIuMjU3",
//   "eTag": "aM0EzM0ZDRUI5Qjc0Q0MxNSE0ODcyLjY",
//   "id": "3A33FCEB9B74CC15!4872",
//   "lastModifiedDateTime": "2018-10-20T18:22:29.977Z",
//   "name": "penguins.jpg",
//   "size": 777835,
//   "webUrl": "https://1drv.ms/i/s!ABXMdJvr_DM6pgg",
//   "rating": {
//     "rating": 75,
//     "simpleRating": 4
//   },
//   "createdBy": {
//     "user": {
//       "displayName": "Joe Programmer",
//       "id": "3a33fceb9b74cc15"
//     }
//   },
//   "lastModifiedBy": {
//     "user": {
//       "displayName": "Joe Programmer",
//       "id": "3a33fceb9b74cc15"
//     }
//   },
//   "parentReference": {
//     "driveId": "3a33fceb9b74cc15",
//     "driveType": "personal",
//     "id": "3A33FCEB9B74CC15!4871",
//     "name": "wildlife",
//     "path": "/drive/root:/Misc/wildlife"
//   },
//   "file": {
//     "mimeType": "image/jpeg",
//     "hashes": {
//       "sha1Hash": "DF7BE9DC4F467187783ACA68C7CE98E4DF2172D0"
//     }
//   },
//   "fileSystemInfo": {
//     "createdDateTime": "2017-06-04T20:40:22.48Z",
//     "lastModifiedDateTime": "2009-07-14T05:32:31.674Z"
//   },
//   "image": {
//     "height": 768,
//     "width": 1024
//   },
//   "photo": {
//     "takenDateTime": "2008-02-18T05:07:31Z"
//   },
//   "shared": {
//     "scope": "users",
//     "owner": {
//       "user": {
//         "displayName": "Joe Programmer",
//         "id": "3a33fceb9b74cc15"
//       }
//     }
//   }
// }
// 

// If the response status code was not 200, then it failed.
if (http.LastStatus <> 200) then
  begin
    Memo1.Lines.Add('Response Status Code = ' + IntToStr(http.LastStatus));
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

// Demonstrate how to parse the JSON...

odata_context := json.StringOf('"@odata.context"');
microsoft_graph_downloadUrl := json.StringOf('"@microsoft.graph.downloadUrl"');
createdDateTime := json.StringOf('createdDateTime');
cTag := json.StringOf('cTag');
eTag := json.StringOf('eTag');
id := json.StringOf('id');
lastModifiedDateTime := json.StringOf('lastModifiedDateTime');
name := json.StringOf('name');
size := json.IntOf('size');
webUrl := json.StringOf('webUrl');
ratingRating := json.IntOf('rating.rating');
ratingSimpleRating := json.IntOf('rating.simpleRating');
createdByUserDisplayName := json.StringOf('createdBy.user.displayName');
createdByUserId := json.StringOf('createdBy.user.id');
lastModifiedByUserDisplayName := json.StringOf('lastModifiedBy.user.displayName');
lastModifiedByUserId := json.StringOf('lastModifiedBy.user.id');
parentReferenceDriveId := json.StringOf('parentReference.driveId');
parentReferenceDriveType := json.StringOf('parentReference.driveType');
parentReferenceId := json.StringOf('parentReference.id');
parentReferenceName := json.StringOf('parentReference.name');
parentReferencePath := json.StringOf('parentReference.path');
fileMimeType := json.StringOf('file.mimeType');
fileHashesSha1Hash := json.StringOf('file.hashes.sha1Hash');
fileSystemInfoCreatedDateTime := json.StringOf('fileSystemInfo.createdDateTime');
fileSystemInfoLastModifiedDateTime := json.StringOf('fileSystemInfo.lastModifiedDateTime');
imageHeight := json.IntOf('image.height');
imageWidth := json.IntOf('image.width');
photoTakenDateTime := json.StringOf('photo.takenDateTime');
sharedScope := json.StringOf('shared.scope');
sharedOwnerUserDisplayName := json.StringOf('shared.owner.user.displayName');
sharedOwnerUserId := json.StringOf('shared.owner.user.id');
end;