C++

OpenAI (ChatGPT) Create Image

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Show how to send a POST to create an image. Gets the JSON response with URLs and then downloads images to files. C++

#include <CkHttp.h>
#include <CkJsonObject.h>
#include <CkHttpResponse.h>
#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkHttp http;

    //  Implements the following CURL command:

    //  curl https://api.openai.com/v1/images/generations \
    //    -H "Content-Type: application/json" \
    //    -H "Authorization: Bearer $OPENAI_API_KEY" \
    //    -d '{
    //      "prompt": "A cute baby sea otter",
    //      "n": 2,
    //      "size": "1024x1024"
    //    }'

    //  Use the following online tool to generate HTTP code from a CURL command
    //  Convert a cURL Command to HTTP Source Code

    //  Use this online tool to generate code from sample JSON:
    //  Generate Code to Create JSON

    //  The following JSON is sent in the request body.

    //  {
    //    "prompt": "A cute baby sea otter",
    //    "n": 2,
    //    "size": "1024x1024"
    //  }

    CkJsonObject json;
    json.UpdateString("prompt","A cute baby sea otter");
    json.UpdateInt("n",2);
    json.UpdateString("size","1024x1024");

    //  Adds the "Authorization: Bearer $OPENAI_API_KEY" header.
    //  This is NOT a real key.  Change the "sk-vi...." to your own key.
    http.put_AuthToken("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");

    CkHttpResponse resp;
    success = http.HttpJson("POST","https://api.openai.com/v1/images/generations",json,"application/json",resp);
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    CkStringBuilder sbResponseBody;
    resp.GetBodySb(sbResponseBody);

    CkJsonObject jResp;
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    std::cout << "Response Body:" << "\r\n";
    std::cout << jResp.emit() << "\r\n";

    int respStatusCode = resp.get_StatusCode();
    std::cout << "Response Status Code = " << respStatusCode << "\r\n";
    if (respStatusCode >= 400) {
        std::cout << "Response Header:" << "\r\n";
        std::cout << resp.header() << "\r\n";
        std::cout << "Failed." << "\r\n";
        return;
    }

    //  Sample JSON response:
    //  (Sample code for parsing the JSON response is shown below)

    //  {
    //    "created": 1589478378,
    //    "data": [
    //      {
    //        "url": "https://..."
    //      },
    //      {
    //        "url": "https://..."
    //      }
    //    ]
    //  }

    //  Sample code for parsing the JSON response...
    //  Use the following online tool to generate parsing code from sample JSON:
    //  Generate Parsing Code from JSON

    const char *url = 0;
    CkStringBuilder sbLocalFilePath;

    //  Download each image..
    http.ClearHeaders();
    http.put_AuthToken("");

    int created = jResp.IntOf("created");
    int i = 0;
    int count_i = jResp.SizeOfArray("data");
    while (i < count_i) {
        jResp.put_I(i);
        url = jResp.stringOf("data[i].url");

        sbLocalFilePath.SetString("c:/aaworkarea/image_");
        sbLocalFilePath.AppendInt(i + 1);
        sbLocalFilePath.Append(".png");

        success = http.Download(url,sbLocalFilePath.getAsString());
        if (success == false) {
            std::cout << http.lastErrorText() << "\r\n";
            return;
        }

        i = i + 1;
    }
    }