(C) Upload Binary File from Memory

This example demonstrates how to upload a binary file from memory. It uploads the file to a subdirectory of our choosing.

Note: This example requires Chilkat v11.0.0 or greater.

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#include <C_CkAuthGoogle.h>
#include <C_CkRest.h>
#include <C_CkJsonObject.h>
#include <C_CkCache.h>
#include <C_CkJsonArray.h>
#include <C_CkFileAccess.h>
#include <C_CkByteData.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkAuthGoogle gAuth;
    HCkRest rest;
    BOOL bAutoReconnect;
    HCkJsonObject json;
    HCkCache gdCache;
    const char *folderId;
    HCkJsonArray parents;
    HCkFileAccess fac;
    HCkByteData jpgBytes;
    const char *jsonResponse;

    success = FALSE;

    success = TRUE;

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

    // This example uses a previously obtained access token having permission for the 
    // Google Drive scope.

    gAuth = CkAuthGoogle_Create();
    CkAuthGoogle_putAccessToken(gAuth,"GOOGLE-DRIVE-ACCESS-TOKEN");

    rest = CkRest_Create();

    // Connect using TLS.
    bAutoReconnect = TRUE;
    success = CkRest_Connect(rest,"www.googleapis.com",443,TRUE,bAutoReconnect);

    // Provide the authentication credentials (i.e. the access token)
    CkRest_SetAuthGoogle(rest,gAuth);

    // -------------------------------------------------------------------------
    // A multipart upload to Google Drive needs a multipart/related Content-Type
    CkRest_AddHeader(rest,"Content-Type","multipart/related");

    // Specify each part of the request.

    // The 1st part is JSON with information about the file.
    CkRest_putPartSelector(rest,"1");
    CkRest_AddHeader(rest,"Content-Type","application/json; charset=UTF-8");

    // Construct the JSON that will contain the metadata about the file data to be uploaded...
    json = CkJsonObject_Create();
    CkJsonObject_AppendString(json,"name","hedgehogs.jpg");
    CkJsonObject_AppendString(json,"description","A cute photo of two hedgehogs.");
    CkJsonObject_AppendString(json,"mimeType","image/jpeg");

    // To place the file in a folder, we must add a parents[] array to the JSON
    // and add the folder ID.  
    // In a previous example (see Build Local Metadata Cache
    // we built a local cache to make it easy to lookup file IDs given a file path.
    // Let's find the file ID for the folder "testFolder/abc/123"
    gdCache = CkCache_Create();
    CkCache_putLevel(gdCache,0);
    CkCache_AddRoot(gdCache,"C:/ckCache/googleDrive");

    folderId = CkCache_fetchText(gdCache,"testFolder/abc/123");
    if (CkCache_getLastMethodSuccess(gdCache) != TRUE) {
        printf("Filepath not found in cache.\n");
        CkAuthGoogle_Dispose(gAuth);
        CkRest_Dispose(rest);
        CkJsonObject_Dispose(json);
        CkCache_Dispose(gdCache);
        return;
    }

    parents = CkJsonArray_Create();
    CkJsonObject_AppendArray2(json,"parents",parents);

    CkJsonArray_AddStringAt(parents,-1,folderId);

    CkRest_SetMultipartBodyString(rest,CkJsonObject_emit(json));

    // The 2nd part is the file content, which will contain the binary image data.
    CkRest_putPartSelector(rest,"2");
    CkRest_AddHeader(rest,"Content-Type","image/jpeg");

    fac = CkFileAccess_Create();
    jpgBytes = CkByteData_Create();
    // Read a JPG file from the local filesystem.
    success = CkFileAccess_ReadEntireFile(fac,"qa_data/jpg/hedgehogs.jpg",jpgBytes);

    // Add the bytes to our upload
    CkRest_SetMultipartBodyBinary(rest,jpgBytes);

    jsonResponse = CkRest_fullRequestMultipart(rest,"POST","/upload/drive/v3/files?uploadType=multipart");
    if (CkRest_getLastMethodSuccess(rest) == FALSE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkAuthGoogle_Dispose(gAuth);
        CkRest_Dispose(rest);
        CkJsonObject_Dispose(json);
        CkCache_Dispose(gdCache);
        CkJsonArray_Dispose(parents);
        CkFileAccess_Dispose(fac);
        CkByteData_Dispose(jpgBytes);
        return;
    }

    // A successful response will have a status code equal to 200.
    if (CkRest_getResponseStatusCode(rest) != 200) {
        printf("response status code = %d\n",CkRest_getResponseStatusCode(rest));
        printf("response status text = %s\n",CkRest_responseStatusText(rest));
        printf("response header: %s\n",CkRest_responseHeader(rest));
        printf("response JSON: %s\n",jsonResponse);
        CkAuthGoogle_Dispose(gAuth);
        CkRest_Dispose(rest);
        CkJsonObject_Dispose(json);
        CkCache_Dispose(gdCache);
        CkJsonArray_Dispose(parents);
        CkFileAccess_Dispose(fac);
        CkByteData_Dispose(jpgBytes);
        return;
    }

    // Show the JSON response.
    CkJsonObject_Load(json,jsonResponse);

    // Show the full JSON response.
    CkJsonObject_putEmitCompact(json,FALSE);
    printf("%s\n",CkJsonObject_emit(json));

    // A successful response looks like this:
    // {
    //   "kind": "drive#file",
    //   "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
    //   "name": "hedgehogs.jpg",
    //   "mimeType": "image/jpeg"
    // }

    // Get the fileId:
    printf("fileId: %s\n",CkJsonObject_stringOf(json,"id"));


    CkAuthGoogle_Dispose(gAuth);
    CkRest_Dispose(rest);
    CkJsonObject_Dispose(json);
    CkCache_Dispose(gdCache);
    CkJsonArray_Dispose(parents);
    CkFileAccess_Dispose(fac);
    CkByteData_Dispose(jpgBytes);

    }