Swift

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. Swift

func chilkatTest() {
    var success: Bool = false

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

    let http = CkoHttp()!

    // 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"
    // }

    let json = CkoJsonObject()!
    json.updateString(jsonPath: "prompt", value: "A cute baby sea otter")
    json.updateInt(jsonPath: "n", value: 2)
    json.updateString(jsonPath: "size", value: "1024x1024")

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

    let resp = CkoHttpResponse()!
    success = http.httpJson(verb: "POST", url: "https://api.openai.com/v1/images/generations", json: json, contentType: "application/json", response: resp)
    if success == false {
        print("\(http.lastErrorText!)")
        return
    }

    let sbResponseBody = CkoStringBuilder()!
    resp.getBodySb(sb: sbResponseBody)

    let jResp = CkoJsonObject()!
    jResp.loadSb(sb: sbResponseBody)
    jResp.emitCompact = false

    print("Response Body:")
    print("\(jResp.emit()!)")

    var respStatusCode: Int = resp.statusCode.intValue
    print("Response Status Code = \(respStatusCode)")
    if respStatusCode >= 400 {
        print("Response Header:")
        print("\(resp.header!)")
        print("Failed.")
        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

    var url: String?
    let sbLocalFilePath = CkoStringBuilder()!

    // Download each image..
    http.clearHeaders()
    http.authToken = ""

    var created: Int = jResp.int(of: "created").intValue
    var i: Int = 0
    var count_i: Int = jResp.size(ofArray: "data").intValue
    while i < count_i {
        jResp.i = i
        url = jResp.string(of: "data[i].url")

        sbLocalFilePath.setString(value: "c:/aaworkarea/image_")
        sbLocalFilePath.appendInt(value: i + 1)
        sbLocalFilePath.append(value: ".png")

        success = http.download(url: url, saveToPath: sbLocalFilePath.getAsString())
        if success == false {
            print("\(http.lastErrorText!)")
            return
        }

        i = i + 1
    }


}