(C) OneDrive -- Download to File

Downloads the contents of a DriveItem directly to a file in the local filesystem.

Note: This example requires Chilkat v9.5.0.68 or greater.

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#include <C_CkHttp.h>

void ChilkatSample(void)
    {
    HCkHttp http;
    const char *localPath;
    BOOL success;

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

    http = CkHttp_Create();

    // 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.)
    CkHttp_putAuthToken(http,"MICROSOFT_GRAPH_ACCESS_TOKEN");

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

    // Make sure to automatically follow redirects
    CkHttp_putFollowRedirects(http,TRUE);

    // This example will download /Misc/wildlife/penguins.jpg
    CkHttp_SetUrlVar(http,"item_path","Misc/wildlife/penguins.jpg");

    // Stream the response body directly to a local file.
    localPath = "qa_output/penguins.jpg";

    success = CkHttp_Download(http,"https://graph.microsoft.com/v1.0/me/drive/root:/{$item_path}:/content",localPath);
    if (CkHttp_getLastMethodSuccess(http) != TRUE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        return;
    }

    // If the response status code was not 200, then it failed.
    if (CkHttp_getLastStatus(http) != 200) {
        printf("Response Status Code = %d\n",CkHttp_getLastStatus(http));
        printf("Failed.\n");
        CkHttp_Dispose(http);
        return;
    }

    // If we got here, then the file was successfully downloaded.
    printf("Download from OneDrive successful.\n");


    CkHttp_Dispose(http);

    }