@marrocode/ns-ai-kit/providers/openai.js

AI Kit for NativeScript

import { HttpClient, HttpError } from '../core/http-client';
export class OpenAIAPI {
    /**
     * Initializes the OpenAIAPI client.
     * @param apiKey Your OpenAI API key.
     * @param baseUrl The base URL for the OpenAI API. Defaults to the official endpoint.
     */
    constructor(apiKey, baseUrl = 'https://api.openai.com/v1') {
        // 1. We create the HttpClient, passing the Authorization header
        // that will be used for all requests made by this instance.
        this.httpClient = new HttpClient(baseUrl, {
            Authorization: `Bearer ${apiKey}`,
        });
    }
    /**
     * Generates a chat completion response from the OpenAI model.
     * @param {object} params The parameters for the chat completion.
     * @param {OpenAIMessage[]} params.messages The history of the conversation.
     * @param {string} [params.model] The model to use (e.g., 'gpt-3.5-turbo').
     * @param {number} [params.temperature] The sampling temperature.
     * @returns A promise that resolves with the model's response.
     * @throws {HttpError} If the API returns an error.
     */
    async chatCompletion({ messages, model = 'gpt-3.5-turbo', temperature = 0.7 }) {
        // 2. Define the API path and the request body.
        const path = '/chat/completions';
        const body = {
            model,
            messages,
            temperature,
        };
        try {
            // 3. Delegate the POST request to our robust HttpClient.
            const response = await this.httpClient.post(path, body);
            // The OpenAI API response includes the message directly in the root object.
            // We can extract and return it here for convenience.
            return response;
        }
        catch (error) {
            // 4. Catch the specific HttpError for better logging.
            if (error instanceof HttpError) {
                console.error(`[OpenAI API Error] Status: ${error.statusCode}, Message: ${error.message}`, error.responseData);
            }
            else {
                console.error('[OpenAI API Error] An unexpected error occurred:', error);
            }
            // Re-throw the error so the calling code can handle it.
            throw error;
        }
    }
}
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