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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.

Chilkat C Downloads

C
#include <C_CkHttp.h>
#include <C_CkJsonObject.h>
#include <C_CkHttpResponse.h>
#include <C_CkStringBuilder.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttp http;
    HCkJsonObject json;
    HCkHttpResponse resp;
    HCkStringBuilder sbResponseBody;
    HCkJsonObject jResp;
    int respStatusCode;
    const char *url;
    HCkStringBuilder sbLocalFilePath;
    int created;
    int i;
    int count_i;

    success = FALSE;

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

    http = CkHttp_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 = CkJsonObject_Create();
    CkJsonObject_UpdateString(json,"prompt","A cute baby sea otter");
    CkJsonObject_UpdateInt(json,"n",2);
    CkJsonObject_UpdateString(json,"size","1024x1024");

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

    resp = CkHttpResponse_Create();
    success = CkHttp_HttpJson(http,"POST","https://api.openai.com/v1/images/generations",json,"application/json",resp);
    if (success == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkJsonObject_Dispose(json);
        CkHttpResponse_Dispose(resp);
        return;
    }

    sbResponseBody = CkStringBuilder_Create();
    CkHttpResponse_GetBodySb(resp,sbResponseBody);

    jResp = CkJsonObject_Create();
    CkJsonObject_LoadSb(jResp,sbResponseBody);
    CkJsonObject_putEmitCompact(jResp,FALSE);

    printf("Response Body:\n");
    printf("%s\n",CkJsonObject_emit(jResp));

    respStatusCode = CkHttpResponse_getStatusCode(resp);
    printf("Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        printf("Response Header:\n");
        printf("%s\n",CkHttpResponse_header(resp));
        printf("Failed.\n");
        CkHttp_Dispose(http);
        CkJsonObject_Dispose(json);
        CkHttpResponse_Dispose(resp);
        CkStringBuilder_Dispose(sbResponseBody);
        CkJsonObject_Dispose(jResp);
        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

    sbLocalFilePath = CkStringBuilder_Create();

    //  Download each image..
    CkHttp_ClearHeaders(http);
    CkHttp_putAuthToken(http,"");

    created = CkJsonObject_IntOf(jResp,"created");
    i = 0;
    count_i = CkJsonObject_SizeOfArray(jResp,"data");
    while (i < count_i) {
        CkJsonObject_putI(jResp,i);
        url = CkJsonObject_stringOf(jResp,"data[i].url");

        CkStringBuilder_SetString(sbLocalFilePath,"c:/aaworkarea/image_");
        CkStringBuilder_AppendInt(sbLocalFilePath,i + 1);
        CkStringBuilder_Append(sbLocalFilePath,".png");

        success = CkHttp_Download(http,url,CkStringBuilder_getAsString(sbLocalFilePath));
        if (success == FALSE) {
            printf("%s\n",CkHttp_lastErrorText(http));
            CkHttp_Dispose(http);
            CkJsonObject_Dispose(json);
            CkHttpResponse_Dispose(resp);
            CkStringBuilder_Dispose(sbResponseBody);
            CkJsonObject_Dispose(jResp);
            CkStringBuilder_Dispose(sbLocalFilePath);
            return;
        }

        i = i + 1;
    }



    CkHttp_Dispose(http);
    CkJsonObject_Dispose(json);
    CkHttpResponse_Dispose(resp);
    CkStringBuilder_Dispose(sbResponseBody);
    CkJsonObject_Dispose(jResp);
    CkStringBuilder_Dispose(sbLocalFilePath);

    }