(Unicode C) OpenAI (ChatGTP) 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.

For more information, see https://platform.openai.com/docs/api-reference/images/create

Chilkat C/C++ Library Downloads
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#include <C_CkHttpW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkHttpResponseW.h>
#include <C_CkStringBuilderW.h>

void ChilkatSample(void)
    {
    HCkHttpW http;
    BOOL success;
    HCkJsonObjectW json;
    HCkHttpResponseW resp;
    HCkStringBuilderW sbResponseBody;
    HCkJsonObjectW jResp;
    int respStatusCode;
    const wchar_t *url;
    HCkStringBuilderW sbLocalFilePath;
    int created;
    int i;
    int count_i;

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

    http = CkHttpW_Create();

    // 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"
    // }

    json = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateString(json,L"prompt",L"A cute baby sea otter");
    CkJsonObjectW_UpdateInt(json,L"n",2);
    CkJsonObjectW_UpdateString(json,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.
    CkHttpW_putAuthToken(http,L"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");
    CkHttpW_SetRequestHeader(http,L"Content-Type",L"application/json");

    resp = CkHttpW_PostJson3(http,L"https://api.openai.com/v1/images/generations",L"application/json",json);
    if (CkHttpW_getLastMethodSuccess(http) == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkJsonObjectW_Dispose(json);
        return;
    }

    sbResponseBody = CkStringBuilderW_Create();
    CkHttpResponseW_GetBodySb(resp,sbResponseBody);

    jResp = CkJsonObjectW_Create();
    CkJsonObjectW_LoadSb(jResp,sbResponseBody);
    CkJsonObjectW_putEmitCompact(jResp,FALSE);

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

    respStatusCode = CkHttpResponseW_getStatusCode(resp);
    wprintf(L"Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        wprintf(L"Response Header:\n");
        wprintf(L"%s\n",CkHttpResponseW_header(resp));
        wprintf(L"Failed.\n");
        CkHttpResponseW_Dispose(resp);
        CkHttpW_Dispose(http);
        CkJsonObjectW_Dispose(json);
        CkStringBuilderW_Dispose(sbResponseBody);
        CkJsonObjectW_Dispose(jResp);
        return;
    }

    CkHttpResponseW_Dispose(resp);

    // 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

    sbLocalFilePath = CkStringBuilderW_Create();

    // Download each image..
    CkHttpW_ClearHeaders(http);
    CkHttpW_putAuthToken(http,L"");

    created = CkJsonObjectW_IntOf(jResp,L"created");
    i = 0;
    count_i = CkJsonObjectW_SizeOfArray(jResp,L"data");
    while (i < count_i) {
        CkJsonObjectW_putI(jResp,i);
        url = CkJsonObjectW_stringOf(jResp,L"data[i].url");

        CkStringBuilderW_SetString(sbLocalFilePath,L"c:/aaworkarea/image_");
        CkStringBuilderW_AppendInt(sbLocalFilePath,i + 1);
        CkStringBuilderW_Append(sbLocalFilePath,L".png");

        success = CkHttpW_Download(http,url,CkStringBuilderW_getAsString(sbLocalFilePath));
        if (success == FALSE) {
            wprintf(L"%s\n",CkHttpW_lastErrorText(http));
            CkHttpW_Dispose(http);
            CkJsonObjectW_Dispose(json);
            CkStringBuilderW_Dispose(sbResponseBody);
            CkJsonObjectW_Dispose(jResp);
            CkStringBuilderW_Dispose(sbLocalFilePath);
            return;
        }

        i = i + 1;
    }



    CkHttpW_Dispose(http);
    CkJsonObjectW_Dispose(json);
    CkStringBuilderW_Dispose(sbResponseBody);
    CkJsonObjectW_Dispose(jResp);
    CkStringBuilderW_Dispose(sbLocalFilePath);

    }