(MFC) Retrieve the metadata for a DriveItem

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 C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkHttp.h>
#include <CkJsonObject.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkHttp http;

    // Use your previously obtained access token here:
    // See the following examples for getting an access token:
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
    //    Refresh Access Token (Azure AD v2.0 Endpoint).
    //    Refresh Access Token (Azure AD Endpoint).

    // (Make sure your token was obtained with the FilesRead or Files.ReadWrite scope.)
    http.put_AuthToken("MICROSOFT_GRAPH_ACCESS_TOKEN");

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

    // Make sure to automatically follow redirects
    http.put_FollowRedirects(true);

    // This example will get the metadata for /Misc/wildlife/penguins.jpg
    http.SetUrlVar("item_path","Misc/wildlife/penguins.jpg");

    const char *metaData = http.quickGetStr("https://graph.microsoft.com/v1.0/me/drive/root:/{$item_path}");
    if (http.get_LastMethodSuccess() != true) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    CkJsonObject json;
    json.put_EmitCompact(false);
    bool success = json.Load(metaData);
    strOut.append(json.emit());
    strOut.append("\r\n");

    // 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.get_LastStatus() != 200) {
        strOut.append("Response Status Code = ");
        strOut.appendInt(http.get_LastStatus());
        strOut.append("\r\n");
        strOut.append("Failed.");
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Demonstrate how to parse the JSON...

    // Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
    // See this example explaining how this memory should be used: const char * functions.

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


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }