(C) Upload File from String

Uploads a text file where the contents of the file are contained in a string variable.

See Google Drive Files: create for more details.

Also See Google Drive Multipart Upload for more details.

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#include <C_CkAuthGoogle.h>
#include <C_CkRest.h>
#include <C_CkJsonObject.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkAuthGoogle gAuth;
    HCkRest rest;
    BOOL bAutoReconnect;
    HCkJsonObject json;
    const char *fileContents;
    const char *jsonResponse;

    success = TRUE;

    // It 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");

    json = CkJsonObject_Create();
    CkJsonObject_AppendString(json,"name","helloWorld.txt");
    CkJsonObject_AppendString(json,"description","A simple text file that says Hello World.");
    CkJsonObject_AppendString(json,"mimeType","text/plain");
    CkRest_SetMultipartBodyString(rest,CkJsonObject_emit(json));

    // The 2nd part is the file content.
    // In this case, we'll upload a simple text file containing "Hello World!"
    CkRest_putPartSelector(rest,"2");
    CkRest_AddHeader(rest,"Content-Type","text/plain");

    fileContents = "Hello World!";
    CkRest_SetMultipartBodyString(rest,fileContents);

    jsonResponse = CkRest_fullRequestMultipart(rest,"POST","/upload/drive/v3/files?uploadType=multipart");
    if (CkRest_getLastMethodSuccess(rest) != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkAuthGoogle_Dispose(gAuth);
        CkRest_Dispose(rest);
        CkJsonObject_Dispose(json);
        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);
        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": "Untitled",
    //   "mimeType": "text/plain"
    // }

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


    CkAuthGoogle_Dispose(gAuth);
    CkRest_Dispose(rest);
    CkJsonObject_Dispose(json);

    }