Visual FoxPro

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. Visual FoxPro

LOCAL lnSuccess
LOCAL loHttp
LOCAL loJson
LOCAL loResp
LOCAL loSbResponseBody
LOCAL loJResp
LOCAL lnRespStatusCode
LOCAL lcUrl
LOCAL loSbLocalFilePath
LOCAL lnCreated
LOCAL i
LOCAL lnCount_i

lnSuccess = 0

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

loHttp = CreateObject('Chilkat.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"
* }

loJson = CreateObject('Chilkat.JsonObject')
loJson.UpdateString("prompt","A cute baby sea otter")
loJson.UpdateInt("n",2)
loJson.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.
loHttp.AuthToken = "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"

loResp = CreateObject('Chilkat.HttpResponse')
lnSuccess = loHttp.HttpJson("POST","https://api.openai.com/v1/images/generations",loJson,"application/json",loResp)
IF (lnSuccess = 0) THEN
    ? loHttp.LastErrorText
    RELEASE loHttp
    RELEASE loJson
    RELEASE loResp
    CANCEL
ENDIF

loSbResponseBody = CreateObject('Chilkat.StringBuilder')
loResp.GetBodySb(loSbResponseBody)

loJResp = CreateObject('Chilkat.JsonObject')
loJResp.LoadSb(loSbResponseBody)
loJResp.EmitCompact = 0

? "Response Body:"
? loJResp.Emit()

lnRespStatusCode = loResp.StatusCode
? "Response Status Code = " + STR(lnRespStatusCode)
IF (lnRespStatusCode >= 400) THEN
    ? "Response Header:"
    ? loResp.Header
    ? "Failed."
    RELEASE loHttp
    RELEASE loJson
    RELEASE loResp
    RELEASE loSbResponseBody
    RELEASE loJResp
    CANCEL
ENDIF

* 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

loSbLocalFilePath = CreateObject('Chilkat.StringBuilder')

* Download each image..
loHttp.ClearHeaders()
loHttp.AuthToken = ""

lnCreated = loJResp.IntOf("created")
i = 0
lnCount_i = loJResp.SizeOfArray("data")
DO WHILE i < lnCount_i
    loJResp.I = i
    lcUrl = loJResp.StringOf("data[i].url")

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

    lnSuccess = loHttp.Download(lcUrl,loSbLocalFilePath.GetAsString())
    IF (lnSuccess = 0) THEN
        ? loHttp.LastErrorText
        RELEASE loHttp
        RELEASE loJson
        RELEASE loResp
        RELEASE loSbResponseBody
        RELEASE loJResp
        RELEASE loSbLocalFilePath
        CANCEL
    ENDIF

    i = i + 1
ENDDO

RELEASE loHttp
RELEASE loJson
RELEASE loResp
RELEASE loSbResponseBody
RELEASE loJResp
RELEASE loSbLocalFilePath