(C) OneNote - Get Page HTML Content

Download the HTML content of a OneNote page. Also iterates over the images and attachments on the OneNote page and downloads the content for each.

For more information, see https://docs.microsoft.com/en-us/graph/api/page-get?view=graph-rest-1.0

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#include <C_CkHttp.h>
#include <C_CkStringBuilder.h>
#include <C_CkXml.h>
#include <C_CkBinData.h>

void ChilkatSample(void)
    {
    HCkHttp http;
    BOOL success;
    HCkStringBuilder sbResponseBody;
    int respStatusCode;
    HCkXml xml;
    HCkStringBuilder sbState;
    const char *url;
    HCkBinData bd;

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

    http = CkHttp_Create();

    // Implements the following CURL command:

    // curl -X GET https://graph.microsoft.com/v1.0/me/onenote/pages/{id}/content?includeIDs=true \
    //   -H 'authorization: Bearer ACCESS_TOKEN'

    // Use the following online tool to generate HTTP code from a CURL command
    // Convert a cURL Command to HTTP Source Code

    // Adds the "Authorization: Bearer ACCESS_TOKEN" header.
    CkHttp_putAuthToken(http,"ACCESS_TOKEN");

    CkHttp_SetUrlVar(http,"page_id","0-d2298668edd74dccac7f821fa378bf64!41-3A33FCEB9B74CC15!20350");

    sbResponseBody = CkStringBuilder_Create();
    success = CkHttp_QuickGetSb(http,"https://graph.microsoft.com/v1.0/me/onenote/pages/{$page_id}/content?includeIDs=true",sbResponseBody);
    if (success == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkStringBuilder_Dispose(sbResponseBody);
        return;
    }

    printf("HTML content:\n");
    printf("%s\n",CkStringBuilder_getAsString(sbResponseBody));

    respStatusCode = CkHttp_getLastStatus(http);
    printf("Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        printf("Response Header:\n");
        printf("%s\n",CkHttp_lastHeader(http));
        printf("Failed.\n");
        CkHttp_Dispose(http);
        CkStringBuilder_Dispose(sbResponseBody);
        return;
    }

    // Let's get the images and attached files.
    // Here's sample HTML content with 2 images and one PDF attachment:

    // <html lang="en-US">
    // 	<head>
    // 		<title>A page with rendered images and an attached file</title>
    // 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    // 		<meta name="created" content="2020-10-23T12:00:00.0000000" />
    // 	</head>
    // 	<body data-absolute-enabled="true" style="font-family:Calibri;font-size:11pt">
    // 		<div id="div:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{32}" data-id="_default" style="position:absolute;left:48px;top:120px;width:624px">
    // 			<p id="p:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{39}" style="margin-top:5.5pt;margin-bottom:5.5pt">Here&#39;s an image from an online source:</p>
    // 			<img id="img:{ee18fe8d-b219-4baf-9b4d-4fc680579f0d}{1}" alt="an image on the page" width="500" height="500" src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-e71b45b763484921b4200e32c2439a47!1-3A33FCEB9B74CC15!20350/$value" data-src-type="image/jpeg" data-fullres-src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-e71b45b763484921b4200e32c2439a47!1-3A33FCEB9B74CC15!20350/$value" data-fullres-src-type="image/jpeg" />
    // 			<p id="p:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{43}" style="margin-top:5.5pt;margin-bottom:5.5pt">Here&#39;s an image uploaded as binary data:</p>
    // 			<img id="img:{ee18fe8d-b219-4baf-9b4d-4fc680579f0d}{3}" alt="an image on the page" width="300" height="225" src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-a60516b962b842f2ae9bec75c16b31de!1-3A33FCEB9B74CC15!20350/$value" data-src-type="image/jpeg" data-fullres-src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-a60516b962b842f2ae9bec75c16b31de!1-3A33FCEB9B74CC15!20350/$value" data-fullres-src-type="image/jpeg" />
    // 			<p id="p:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{47}" style="margin-top:5.5pt;margin-bottom:5.5pt">Here&#39;s a file attachment:</p>
    // 			<object data-attachment="FileName.pdf" type="application/pdf" data="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-9e685efb33a24a6a8de1b9c707d28385!1-3A33FCEB9B74CC15!20350/$value" />
    // 		</div>
    // 	</body>
    // </html>

    xml = CkXml_Create();
    CkXml_LoadSb(xml,sbResponseBody,TRUE);

    // Iterate over each element in the XML.  Each time we find an "img" or "object", download the data.
    // (The sbState is an object used to keep track of the current state of the traversal.)
    sbState = CkStringBuilder_Create();

    bd = CkBinData_Create();
    while (CkXml_NextInTraversal2(xml,sbState) != FALSE) {

        if (CkXml_TagEquals(xml,"img") == TRUE) {
            printf("img id: %s\n",CkXml_getAttrValue(xml,"id"));
            url = CkXml_getAttrValue(xml,"src");
            CkBinData_Clear(bd);
            success = CkHttp_QuickGetBd(http,url,bd);
            if (success == FALSE) {
                printf("%s\n",CkHttp_lastErrorText(http));
                CkHttp_Dispose(http);
                CkStringBuilder_Dispose(sbResponseBody);
                CkXml_Dispose(xml);
                CkStringBuilder_Dispose(sbState);
                CkBinData_Dispose(bd);
                return;
            }

            printf("Downloaded from %s\n",url);
            printf("----\n");
            // If desired, bd.WriteFile to save the contents of bd to a file..
        }

        if (CkXml_TagEquals(xml,"object") == TRUE) {
            printf("data-attachment: %s\n",CkXml_getAttrValue(xml,"data-attachment"));
            printf("type: %s\n",CkXml_getAttrValue(xml,"type"));
            url = CkXml_getAttrValue(xml,"data");
            CkBinData_Clear(bd);
            success = CkHttp_QuickGetBd(http,url,bd);
            if (success == FALSE) {
                printf("%s\n",CkHttp_lastErrorText(http));
                CkHttp_Dispose(http);
                CkStringBuilder_Dispose(sbResponseBody);
                CkXml_Dispose(xml);
                CkStringBuilder_Dispose(sbState);
                CkBinData_Dispose(bd);
                return;
            }

            printf("Downloaded from %s\n",url);
            printf("----\n");
            // If desired, bd.WriteFile to save the contents of bd to a file..
        }

    }

    printf("Success.\n");


    CkHttp_Dispose(http);
    CkStringBuilder_Dispose(sbResponseBody);
    CkXml_Dispose(xml);
    CkStringBuilder_Dispose(sbState);
    CkBinData_Dispose(bd);

    }