damjan_savicandClaude Opus 4.5
798d7e8f5b
- Add Deepseek client using OpenAI SDK with custom baseURL - Implement createDeepseekClient() factory function with lazy initialization - Add ChatMessage type definitions for type safety - Include portfolio-specific system prompt for the chatbot - Support both streaming and non-streaming chat completions - Configure default model (deepseek-chat) and sensible defaults Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
93 lines
2.8 KiB
TypeScript
93 lines
2.8 KiB
TypeScript
import OpenAI from 'openai';
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// Deepseek configuration constants
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const DEEPSEEK_BASE_URL = 'https://api.deepseek.com';
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const DEEPSEEK_DEFAULT_MODEL = 'deepseek-chat';
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// Create Deepseek client using OpenAI SDK
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// The client is lazy-initialized to avoid issues during build time
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let deepseekClient: OpenAI | null = null;
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export function createDeepseekClient(): OpenAI {
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if (!process.env.DEEPSEEK_API_KEY) {
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throw new Error('DEEPSEEK_API_KEY environment variable is not set');
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}
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if (!deepseekClient) {
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deepseekClient = new OpenAI({
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baseURL: DEEPSEEK_BASE_URL,
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apiKey: process.env.DEEPSEEK_API_KEY,
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});
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}
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return deepseekClient;
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}
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// Type definitions for chat messages
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export type ChatRole = 'system' | 'user' | 'assistant';
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export interface ChatMessage {
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role: ChatRole;
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content: string;
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}
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// System prompt for the portfolio chatbot
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export const PORTFOLIO_SYSTEM_PROMPT = `You are a helpful AI assistant on Damjan Savić's portfolio website.
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Damjan is a full-stack web developer and AI specialist based in Vienna, Austria.
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You can help visitors learn about Damjan's skills, services, and experience.
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Be friendly, professional, and concise in your responses.
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If asked about topics unrelated to Damjan or web development, politely redirect the conversation.
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Respond in the same language the user writes to you (German, English, or Serbian).`;
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// Chat completion options
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export interface ChatCompletionOptions {
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messages: ChatMessage[];
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model?: string;
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temperature?: number;
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maxTokens?: number;
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stream?: boolean;
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}
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// Create a chat completion (non-streaming)
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export async function createChatCompletion(
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options: ChatCompletionOptions
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): Promise<string> {
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const client = createDeepseekClient();
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const completion = await client.chat.completions.create({
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model: options.model ?? DEEPSEEK_DEFAULT_MODEL,
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messages: options.messages,
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temperature: options.temperature ?? 0.7,
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max_tokens: options.maxTokens ?? 1024,
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stream: false,
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});
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return completion.choices[0]?.message?.content ?? '';
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}
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// Create a streaming chat completion
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export async function createStreamingChatCompletion(
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options: Omit<ChatCompletionOptions, 'stream'>
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): Promise<AsyncIterable<OpenAI.Chat.Completions.ChatCompletionChunk>> {
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const client = createDeepseekClient();
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const stream = await client.chat.completions.create({
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model: options.model ?? DEEPSEEK_DEFAULT_MODEL,
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messages: options.messages,
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temperature: options.temperature ?? 0.7,
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max_tokens: options.maxTokens ?? 1024,
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stream: true,
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});
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return stream;
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}
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// Default export for convenience
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export default {
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createClient: createDeepseekClient,
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createCompletion: createChatCompletion,
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createStreamingCompletion: createStreamingChatCompletion,
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SYSTEM_PROMPT: PORTFOLIO_SYSTEM_PROMPT,
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DEFAULT_MODEL: DEEPSEEK_DEFAULT_MODEL,
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};
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