(Unicode C++) SharePoint -- Get File Metadata (File Size, Last-Modified Date/Time, etc.)

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Demonstrates how to get a file's metdata, which includes the file size, last-modified date/time, name, server relative URL, etc.

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#include <CkHttpW.h>
#include <CkJsonObjectW.h>
#include <CkDateTimeW.h>
#include <CkDtObjW.h>

void ChilkatSample(void)
    {
    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttpW http;

    // If SharePoint Windows classic authentication is used, then set the 
    // Login, Password, LoginDomain, and NtlmAuth properties.
    http.put_Login(L"SHAREPOINT_USERNAME");
    http.put_Password(L"SHAREPOINT_PASSWORD");
    http.put_LoginDomain(L"SHAREPOINT_NTLM_DOMAIN");
    http.put_NtlmAuth(true);

    // The more common case is to use SharePoint Online authentication (via the SPOIDCRL cookie).
    // If so, do not set Login, Password, LoginDomain, and NtlmAuth, and instead
    // establish the cookie as shown at SharePoint Online Authentication

    // Indicate that we want a JSON reply
    http.put_Accept(L"application/json;odata=verbose");
    http.put_AcceptCharset(L"utf-8");

    const wchar_t *url = L"https://SHAREPOINT_HTTPS_DOMAIN/_api/web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')";

    const wchar_t *jsonReply = http.quickGetStr(url);
    if (http.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    // Examine the file's metadata in JSON format.
    CkJsonObjectW json;
    json.Load(jsonReply);
    json.put_EmitCompact(false);

    // Make sure it was a success response, and that we really have metadata.
    // If it was an error response, then the JSON is error information..
    if (http.get_LastStatus() != 200) {
        wprintf(L"%s\n",json.emit());
        wprintf(L"Failed.\n");
        return;
    }

    wprintf(L"%s\n",json.emit());

    wprintf(L"--------\n");
    wprintf(L"Server relative URL: %s\n",json.stringOf(L"d.ServerRelativeUrl"));

    int fileSize = json.IntOf(L"d.Length");
    wprintf(L"File Size = %d\n",fileSize);

    CkDateTimeW lastmod;
    lastmod.SetFromTimestamp(json.stringOf(L"d.TimeLastModified"));

    // Once we have the CkDateTime object, we can get the date/time in all sorts of formats:

    // Get as a RFC822 GMT string:
    bool bLocalTime = false;
    wprintf(L"%s\n",lastmod.getAsRfc822(bLocalTime));

    // Get as an RFC822 string in the local timezone.
    // (remember, the daylight savings that existed at the given time in the past is applied)
    bLocalTime = true;
    wprintf(L"%s\n",lastmod.getAsRfc822(bLocalTime));

    // Get as a 32-bit UNIX time (local or GMT..)
    // The Unix time is number of seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC). 
    int unixTime = lastmod.GetAsUnixTime(bLocalTime);
    wprintf(L"Unix time: %d\n",unixTime);

    // One can also get the as a "DtObj" object for accessing the individual
    // parts of the date/time, such as month, day, year, hour, minute, etc.
    // The DtObj can be obtained in the GMT or local timezone:
    CkDtObjW *dtObj = lastmod.GetDtObj(bLocalTime);
    if (lastmod.get_LastMethodSuccess() == false) {
        wprintf(L"This should never really happen!\n");
        return;
    }

    wprintf(L"%d-%d-%d %d:%d:%d\n",dtObj->get_Day(),dtObj->get_Month(),dtObj->get_Year(),dtObj->get_Hour(),dtObj->get_Minute()
        ,dtObj->get_Second());

    delete dtObj;

    // -------------------------------------------------
    // The file's metadata look like this:

    // { 
    //   "d": { 
    //     "__metadata": { 
    //       "id": "Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')",
    //       "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')",
    //       "type": "SP.File"
    //     },
    //     "Author": { 
    //       "__deferred": { 
    //         "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')/Author"
    //       }
    //     },
    //     "CheckedOutByUser": { 
    //       "__deferred": { 
    //         "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')/CheckedOutByUser"
    //       }
    //     },
    //     "ListItemAllFields": { 
    //       "__deferred": { 
    //         "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')/ListItemAllFields"
    //       }
    //     },
    //     "LockedByUser": { 
    //       "__deferred": { 
    //         "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')/LockedByUser"
    //       }
    //     },
    //     "ModifiedBy": { 
    //       "__deferred": { 
    //         "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')/ModifiedBy"
    //       }
    //     },
    //     "Versions": { 
    //       "__deferred": { 
    //         "uri": "https://SHAREPOINT_HTTPS_DOMAIN/_api/Web/GetFileByServerRelativeUrl('/Documents/VCAC-document.docx')/Versions"
    //       }
    //     },
    //     "CheckInComment": "",
    //     "CheckOutType": 2,
    //     "ContentTag": "{E2F05E75-B3EF-4826-8284-E572D3628A7D},9,10",
    //     "CustomizedPageStatus": 0,
    //     "ETag": "\"{E2F05E75-B3EF-4826-8284-E572D3628A7D},9\"",
    //     "Exists": true,
    //     "Length": "21082",
    //     "Level": 2,
    //     "MajorVersion": 0,
    //     "MinorVersion": 3,
    //     "Name": "VCAC-document.docx",
    //     "ServerRelativeUrl": "/Documents/VCAC-document.docx",
    //     "TimeCreated": "2016-03-04T12:38:01Z",
    //     "TimeLastModified": "2017-01-16T04:44:31Z",
    //     "Title": "",
    //     "UIVersion": 3,
    //     "UIVersionLabel": "0.3"
    //   }
    // }
    // 
    }