(.NET Core C#) Upload File to Google Cloud Storage

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Demonstrates how to upload a file to Google Cloud Storage.

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// 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 
// scope "https://www.googleapis.com/auth/cloud-platform"

Chilkat.JsonObject jsonToken = new Chilkat.JsonObject();
bool success = jsonToken.LoadFile("qa_data/tokens/googleCloudStorage.json");
if (success == false) {
    Debug.WriteLine(jsonToken.LastErrorText);
    return;
}

// Send a POST equivalent to this curl command.
// The content of the file is contained in the request body.

// curl -X POST --data-binary @[OBJECT] \
//     -H "Authorization: Bearer [OAUTH2_TOKEN]" \
//     -H "Content-Type: [OBJECT_CONTENT_TYPE]" \
//     "https://www.googleapis.com/upload/storage/v1/b/[BUCKET_NAME]/o?uploadType=media&name=[OBJECT_NAME]"

Chilkat.Http http = new Chilkat.Http();
http.AuthToken = jsonToken.StringOf("access_token");

Chilkat.StringBuilder sbPath = new Chilkat.StringBuilder();
sbPath.Append("/upload/storage/v1/b/bucket_name/o?uploadType=media&name=object_name");
int numReplaced = sbPath.Replace("bucket_name","chilkat-ocean");
numReplaced = sbPath.Replace("object_name","penguins.jpg");

Chilkat.HttpRequest req = new Chilkat.HttpRequest();
req.HttpVerb = "POST";
req.Path = sbPath.GetAsString();
req.ContentType = "image/jpeg";
// Indicate the file to be streamed in the request body when the HTTP POST is sent.
req.StreamBodyFromFile("qa_data/jpg/penguins.jpg");

Chilkat.HttpResponse resp = http.SynchronousRequest("www.googleapis.com",443,true,req);
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

int responseCode = resp.StatusCode;
if (responseCode == 401) {
    Debug.WriteLine(resp.BodyStr);
    Debug.WriteLine("If invalid credentials, then it is likely the access token expired.");
    Debug.WriteLine("Your app should automatically fetch a new access token and re-try.");

    return;
}

Debug.WriteLine("Response code: " + Convert.ToString(responseCode));
Debug.WriteLine("Response body");
Debug.WriteLine(resp.BodyStr);

// A successful response looks like this:
// Response code: 200
// Response body
// {
//  "kind": "storage#object",
//  "id": "chilkat-ocean/penguins.jpg/1502643657837855",
//  "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/penguins.jpg",
//  "name": "penguins.jpg",
//  "bucket": "chilkat-ocean",
//  "generation": "1502643657837855",
//  "metageneration": "1",
//  "contentType": "image/jpeg",
//  "timeCreated": "2017-08-13T17:00:57.811Z",
//  "updated": "2017-08-13T17:00:57.811Z",
//  "storageClass": "MULTI_REGIONAL",
//  "timeStorageClassUpdated": "2017-08-13T17:00:57.811Z",
//  "size": "777835",
//  "md5Hash": "nTd7EM53jEk4s8fixjoimg==",
//  "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/penguins.jpg?generation=1502643657837855&alt=media",
//  "crc32c": "ixxYVw==",
//  "etag": "CJ+azOvX1NUCEAE="
// }