(Swift 2) OpenAI (ChatGTP) Create Chat Completion

See more OpenAI ChatGPT Examples

Shows how to create a model response for a given chat conversation.

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

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

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

    let http = CkoHttp()
    var success: Bool

    // Implements the following CURL command:

    // curl https://api.openai.com/v1/chat/completions \
    //   -H "Content-Type: application/json" \
    //   -H "Authorization: Bearer $OPENAI_API_KEY" \
    //   -d '{
    //     "model": "gpt-3.5-turbo",
    //     "messages": [{"role": "user", "content": "Hello!"}]
    //   }'

    // 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.

    // {
    //   "model": "gpt-3.5-turbo",
    //   "messages": [
    //     {
    //       "role": "user",
    //       "content": "Hello!"
    //     }
    //   ]
    // }

    let json = CkoJsonObject()
    json.UpdateString("model", value: "gpt-3.5-turbo")
    json.UpdateString("messages[0].role", value: "user")
    json.UpdateString("messages[0].content", value: "Hello!")

    // 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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"
    http.SetRequestHeader("Content-Type", value: "application/json")

    var resp: CkoHttpResponse? = http.PostJson3("https://api.openai.com/v1/chat/completions", contentType: "application/json", json: json)
    if http.LastMethodSuccess == false {
        print("\(http.LastErrorText)")
        return
    }

    let sbResponseBody = CkoStringBuilder()
    resp!.GetBodySb(sbResponseBody)

    let jResp = CkoJsonObject()
    jResp.LoadSb(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.")
        resp = nil
        return
    }

    resp = nil

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //   "id": "chatcmpl-123",
    //   "object": "chat.completion",
    //   "created": 1677652288,
    //   "choices": [
    //     {
    //       "index": 0,
    //       "message": {
    //         "role": "assistant",
    //         "content": "\n\nHello there, how may I assist you today?"
    //       },
    //       "finish_reason": "stop"
    //     }
    //   ],
    //   "usage": {
    //     "prompt_tokens": 9,
    //     "completion_tokens": 12,
    //     "total_tokens": 21
    //   }
    // }

    // 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 index: Int
    var Role: String?
    var Content: String?
    var finish_reason: String?

    var id: String? = jResp.StringOf("id")
    var v_object: String? = jResp.StringOf("object")
    var created: Int = jResp.IntOf("created").intValue
    var Prompt_tokens: Int = jResp.IntOf("usage.prompt_tokens").intValue
    var Completion_tokens: Int = jResp.IntOf("usage.completion_tokens").intValue
    var Total_tokens: Int = jResp.IntOf("usage.total_tokens").intValue
    var i: Int = 0
    var count_i: Int = jResp.SizeOfArray("choices").intValue
    while i < count_i {
        jResp.I = i
        index = jResp.IntOf("choices[i].index").intValue
        Role = jResp.StringOf("choices[i].message.role")
        Content = jResp.StringOf("choices[i].message.content")
        finish_reason = jResp.StringOf("choices[i].finish_reason")
        i = i + 1
    }


}