(Unicode C) Upload String to Dropbox

Uploads a string to a file on Dropbox. This example can upload content up to 150MB, assuming a 150MB string fits in memory for your app. Larger files must be uploaded with an upload session (upload_session/start).

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#include <C_CkRestW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkDateTimeW.h>
#include <C_CkDtObjW.h>

void ChilkatSample(void)
    {
    HCkRestW rest;
    BOOL success;
    const wchar_t *content;
    HCkJsonObjectW json;
    const wchar_t *responseStr;
    HCkJsonObjectW jsonResp;
    int size;
    const wchar_t *rev;
    const wchar_t *clientModified;
    HCkDateTimeW ckdt;
    BOOL bLocalTime;
    HCkDtObjW dt;

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

    // A Dropbox access token should have been previously obtained.
    // Dropbox access tokens do not expire.
    // See Dropbox Access Token.

    rest = CkRestW_Create();

    // Connect to Dropbox
    success = CkRestW_Connect(rest,L"content.dropboxapi.com",443,TRUE,TRUE);
    if (success != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        return;
    }

    // Add request headers.
    CkRestW_AddHeader(rest,L"Content-Type",L"application/octet-stream");
    CkRestW_AddHeader(rest,L"Authorization",L"Bearer DROPBOX_ACCESS_TOKEN");

    // The upload "parameters" contained in JSON passed in an HTTP request header.
    // This is the JSON to be added in this example:
    // { 
    //    "path": "/jack.txt",
    //    "mode": "add",
    //    "autorename": true,
    //    "mute": false
    // }

    // This will be the content of the file created in Dropbox.
    content = L"All work and no play makes Jack a dull boy";

    json = CkJsonObjectW_Create();
    CkJsonObjectW_AppendString(json,L"path",L"/jack.txt");
    CkJsonObjectW_AppendString(json,L"mode",L"add");
    CkJsonObjectW_AppendBool(json,L"autorename",TRUE);
    CkJsonObjectW_AppendBool(json,L"mute",FALSE);
    CkRestW_AddHeader(rest,L"Dropbox-API-Arg",CkJsonObjectW_emit(json));

    // Do the upload.  The URL is https://content.dropboxapi.com/2/files/upload.
    // We already connected to content.dropboxapi.com using TLS (i.e. HTTPS),
    // so now we only need to specify the path "/2/files/upload".

    responseStr = CkRestW_fullRequestString(rest,L"POST",L"/2/files/upload",content);
    if (CkRestW_getLastMethodSuccess(rest) != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        return;
    }

    // When successful, Dropbox responds with a 200 response code.
    if (CkRestW_getResponseStatusCode(rest) != 200) {
        // Examine the request/response to see what happened.
        wprintf(L"response status code = %d\n",CkRestW_getResponseStatusCode(rest));
        wprintf(L"response status text = %s\n",CkRestW_responseStatusText(rest));
        wprintf(L"response header: %s\n",CkRestW_responseHeader(rest));
        wprintf(L"response body (if any): %s\n",responseStr);
        wprintf(L"---\n");
        wprintf(L"LastRequestStartLine: %s\n",CkRestW_lastRequestStartLine(rest));
        wprintf(L"LastRequestHeader: %s\n",CkRestW_lastRequestHeader(rest));
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        return;
    }

    wprintf(L"LastRequestHeader: %s\n",CkRestW_lastRequestHeader(rest));

    // The response is JSON.
    jsonResp = CkJsonObjectW_Create();
    CkJsonObjectW_putEmitCompact(jsonResp,FALSE);
    CkJsonObjectW_Load(jsonResp,responseStr);

    // Show the JSON response.
    wprintf(L"%s\n",CkJsonObjectW_emit(jsonResp));

    // Returns JSON that looks like this:
    // { 
    //  "name": "jack.txt",
    //  "path_lower": "/jack.txt",
    //  "path_display": "/jack.txt",
    //  "id": "id:yqx4-tE_NKAAAAAAAAAAAQ",
    //  "client_modified": "2016-06-02T20:42:11Z",
    //  "server_modified": "2016-06-02T20:42:11Z",
    //  "rev": "8482db15f",
    //  "size": 42
    // }

    // Sample code to get data from the JSON response:
    size = CkJsonObjectW_IntOf(jsonResp,L"size");
    wprintf(L"size = %d\n",size);

    rev = CkJsonObjectW_stringOf(jsonResp,L"rev");
    wprintf(L"rev = %s\n",rev);

    clientModified = CkJsonObjectW_stringOf(jsonResp,L"client_modified");
    ckdt = CkDateTimeW_Create();
    CkDateTimeW_SetFromTimestamp(ckdt,clientModified);
    bLocalTime = TRUE;
    dt = CkDateTimeW_GetDtObj(ckdt,bLocalTime);
    wprintf(L"%d/%d/%d %d:%d\n",CkDtObjW_getDay(dt),CkDtObjW_getMonth(dt),CkDtObjW_getYear(dt),CkDtObjW_getHour(dt),CkDtObjW_getMinute(dt));
    CkDtObjW_Dispose(dt);


    CkRestW_Dispose(rest);
    CkJsonObjectW_Dispose(json);
    CkJsonObjectW_Dispose(jsonResp);
    CkDateTimeW_Dispose(ckdt);

    }