Unicode 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. Unicode C++

#include <CkHttpW.h>
#include <CkJsonObjectW.h>
#include <CkHttpResponseW.h>
#include <CkStringBuilderW.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.

    CkHttpW 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"
    //  }

    CkJsonObjectW json;
    json.UpdateString(L"prompt",L"A cute baby sea otter");
    json.UpdateInt(L"n",2);
    json.UpdateString(L"size",L"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(L"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");

    CkHttpResponseW resp;
    success = http.HttpJson(L"POST",L"https://api.openai.com/v1/images/generations",json,L"application/json",resp);
    if (success == false) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    CkStringBuilderW sbResponseBody;
    resp.GetBodySb(sbResponseBody);

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

    wprintf(L"Response Body:\n");
    wprintf(L"%s\n",jResp.emit());

    int respStatusCode = resp.get_StatusCode();
    wprintf(L"Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        wprintf(L"Response Header:\n");
        wprintf(L"%s\n",resp.header());
        wprintf(L"Failed.\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 wchar_t *url = 0;
    CkStringBuilderW sbLocalFilePath;

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

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

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

        success = http.Download(url,sbLocalFilePath.getAsString());
        if (success == false) {
            wprintf(L"%s\n",http.lastErrorText());
            return;
        }

        i = i + 1;
    }
    }