Add AI-powered chatbot for media outlets

Integrate an AI chatbot feature allowing users to interact with media outlets, fetch chat history, and generate AI responses using OpenAI.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 9a264234-c5d7-4dcc-adf3-a954b149b30d
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/3df548ff-50ae-432f-9be4-25d34eccc983/9a264234-c5d7-4dcc-adf3-a954b149b30d/d35d7YU

server/chatbot.ts

@@ -0,0 +1,54 @@
+import OpenAI from "openai";
+
+// This is using Replit's AI Integrations service, which provides OpenAI-compatible API access without requiring your own OpenAI API key.
+// the newest OpenAI model is "gpt-5" which was released August 7, 2025. do not change this unless explicitly requested by the user
+const openai = new OpenAI({
+  baseURL: process.env.AI_INTEGRATIONS_OPENAI_BASE_URL,
+  apiKey: process.env.AI_INTEGRATIONS_OPENAI_API_KEY
+});
+
+interface ChatbotPersonality {
+  systemPrompt: string;
+  name: string;
+}
+
+export function getChatbotPersonality(outletName: string, outletCategory: string, outletDescription?: string): ChatbotPersonality {
+  const categoryContext = {
+    people: `You are an AI assistant representing ${outletName}. ${outletDescription ? outletDescription : 'You speak from their perspective, embodying their personality, values, and communication style.'} Engage with users as if you are ${outletName} themselves, sharing insights, opinions, and knowledge from their unique perspective.`,
+    topics: `You are an AI expert on ${outletName}. ${outletDescription ? outletDescription : 'You provide in-depth knowledge and analysis about this topic.'} Answer questions with expertise and provide thoughtful commentary from various angles on this subject.`,
+    companies: `You are an AI representative of ${outletName}. ${outletDescription ? outletDescription : 'You speak on behalf of the company, sharing information about its mission, products, and values.'} Engage professionally while representing the company's interests and perspective.`
+  };
+
+  const systemPrompt = categoryContext[outletCategory as keyof typeof categoryContext] || 
+    `You are an AI assistant for ${outletName}. Provide helpful and informative responses.`;
+
+  return {
+    systemPrompt: systemPrompt + '\n\nKeep responses conversational, engaging, and concise (2-4 paragraphs maximum). Use Korean language for communication.',
+    name: outletName
+  };
+}
+
+export async function generateChatbotResponse(
+  messages: Array<{ role: 'user' | 'assistant' | 'system'; content: string }>,
+  outletName: string,
+  outletCategory: string,
+  outletDescription?: string
+): Promise<string> {
+  const personality = getChatbotPersonality(outletName, outletCategory, outletDescription);
+  
+  const chatMessages: OpenAI.Chat.ChatCompletionMessageParam[] = [
+    { role: 'system', content: personality.systemPrompt },
+    ...messages.map(msg => ({
+      role: msg.role as 'user' | 'assistant',
+      content: msg.content
+    }))
+  ];
+
+  const completion = await openai.chat.completions.create({
+    model: 'gpt-5',
+    messages: chatMessages,
+    max_completion_tokens: 8192,
+  });
+
+  return completion.choices[0]?.message?.content || '죄송합니다. 응답을 생성할 수 없습니다.';
+}