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.Backup/html/services/geminiService.ts

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+
+import { GoogleGenAI } from "@google/genai";
+
+const SYSTEM_INSTRUCTION = `You are the primary AI Technical Consultant for "Hanmo Control & Network Co., Ltd.". 
+Hanmo is a global leader specializing in:
+1. DCS (Distributed Control Systems): High-availability process automation for utility-scale industries.
+2. SCADA (Supervisory Control and Data Acquisition): Real-time remote operations and monitoring.
+3. Database & Historian Servers: Secure, high-speed industrial data management.
+4. Precision Control Instruments: Smart sensors and actuators for flow, pressure, and thermal management.
+
+Tone: Professional, highly technical, authoritative, and helpful. 
+Language: You must respond in English at all times.
+Guidance: Provide expert advice on automation architecture and integration. For pricing or project-specific quotes, instruct the user to use the official contact form on the website.`;
+
+export async function chatWithExpert(message: string, history: {role: 'user' | 'model', text: string}[]) {
+  try {
+    const ai = new GoogleGenAI({ apiKey: process.env.API_KEY || '' });
+    
+    const response = await ai.models.generateContent({
+      model: 'gemini-3-flash-preview',
+      contents: [
+        ...history.map(h => ({ role: h.role === 'user' ? 'user' : 'model', parts: [{ text: h.text }] })),
+        { role: 'user', parts: [{ text: message }] }
+      ],
+      config: {
+        systemInstruction: SYSTEM_INSTRUCTION,
+        temperature: 0.7,
+      },
+    });
+
+    return response.text || "I apologize, but I am unable to process your technical inquiry right now. Please try again later.";
+  } catch (error) {
+    console.error("Gemini API Error:", error);
+    return "Our technical advisor is currently offline. Please contact our support team directly via email.";
+  }
+}