285 lines
8.6 KiB
JavaScript
Executable File
285 lines
8.6 KiB
JavaScript
Executable File
// server.js
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const express = require("express");
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const multer = require("multer");
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const cors = require("cors");
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const fs = require("fs");
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const path = require("path");
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const OpenAI = require("openai");
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const bodyParser = require("body-parser");
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const app = express();
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const port = 30009;
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const mysql = require("mysql2/promise");
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// 初始化数据库连接池
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const pool = mysql.createPool({
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host: "1.95.137.212",
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user: "fastbee",
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password: "maibu520",
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database: "fastbee",
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waitForConnections: true,
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connectionLimit: 10,
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});
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// 允许大文件请求体
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app.use(bodyParser.json({ limit: "500mb" }));
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app.use(bodyParser.urlencoded({ limit: "500mb", extended: true }));
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// Multer 上传目录
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const upload = multer({
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dest: "uploads/",
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limits: { fileSize: 500 * 1024 * 1024 }, // 500MB
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});
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// Node <20 兼容 File
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if (typeof File === "undefined") {
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globalThis.File = require("node:buffer").File;
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}
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// 启用 CORS
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app.use(cors());
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app.use(express.json({ limit: "200mb" })); // 支持大 JSON
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app.use(express.urlencoded({ extended: true })); // 支持 form-data 字段
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// 初始化混元客户端
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// const client = new OpenAI({
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// apiKey: "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",
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// baseURL: "https://openrouter.ai/api/v1",
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// timeout: 120000,
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// });
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// const client = new OpenAI({
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// baseURL:"https://openrouter.ai/api/v1",
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// apiKey:"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",
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// timeout: 120000
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// });
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// const client = new OpenAI({
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// baseURL:"https://satabot.openai.azure.com/",
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// apiKey:"DxvRiQWROzLTapiSHcK0FXKAAXDBlhci1XaqTTpr50sgUsAkmxfUJQQJ99BIACYeBjFXJ3w3AAABACOGZdHp",
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// timeout: 120000
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// });
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//https://satabot.openai.azure.com/
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// const client = new OpenAI({
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// apiKey: "DxvRiQWROzLTapiSHcK0FXKAAXDBlhci1XaqTTpr50sgUsAkmxfUJQQJ99BIACYeBjFXJ3w3AAABACOGZdHp", // 推荐放环境变量
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// baseURL: "https://satabot.openai.azure.com/openai/deployments/gpt-4.1/chat/completions?api-version=2025-01-01-preview",
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// defaultQuery: { "api-version": "2024-02-15-preview" },
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// defaultHeaders: { "api-key": process.env.AZURE_OPENAI_KEY },
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// timeout: 120000
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// });
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// https://satabot.openai.azure.com/openai/deployments/gpt-4.1/
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// https://satabot.openai.azure.com/openai/deployments/gpt-5-mini/
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// 初始化客户端
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const client = new OpenAI({
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apiKey: "DxvRiQWROzLTapiSHcK0FXKAAXDBlhci1XaqTTpr50sgUsAkmxfUJQQJ99BIACYeBjFXJ3w3AAABACOGZdHp",
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baseURL: "https://satabot.openai.azure.com/openai/deployments/gpt-4.1",
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defaultQuery: { "api-version": "2024-04-01-preview" },
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timeout: 120000
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});
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const client1 = new OpenAI({
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apiKey: "DxvRiQWROzLTapiSHcK0FXKAAXDBlhci1XaqTTpr50sgUsAkmxfUJQQJ99BIACYeBjFXJ3w3AAABACOGZdHp",
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baseURL: "https://satabot.openai.azure.com/openai/deployments/gpt-5-mini/",
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defaultQuery: { "api-version": "2024-04-01-preview" },
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timeout: 120000
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});
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app.get("/test-db", async (req, res) => {
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try {
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await pool.query(
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"INSERT INTO ai_chat_messages (session_id, role, content) VALUES (?, 'user', ?)",
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["sess1", "hello"]
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);
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res.send("OK");
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} catch (err) {
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console.error(err);
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res.send("FAIL");
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}
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});
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// 查询用户所有会话列表
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app.get("/sessions", async (req, res) => {
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console.log("收到的 userId:", req.query.userId);
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try {
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const { userId } = req.query.userId;
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if (!userId || userId === "NaN" || isNaN(Number(userId))) {
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// return res.status(400).json({ code: 1, error: "userId 必填" });
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return res.redirect('http://1.95.137.212/#/login?redirect=%2Findex&goRemote=1');
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}
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// 查该用户所有的会话，按最后活跃时间倒序
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const [rows] = await pool.query(
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`
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SELECT session_id, MAX(created_at) AS last_time
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FROM ai_chat_messages
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WHERE user_id = ?
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GROUP BY session_id
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ORDER BY last_time DESC
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`,
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[userId]
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);
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res.json({
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code: 0,
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userId,
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sessions: rows.map((r) => r.session_id), // 只返回 session_id 列表
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});
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}
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catch (err)
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{
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console.error("查询会话列表失败:", err);
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res.status(500).json({ code: 1, error: err.message });
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}
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});
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// 查询会话历史
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app.get("/history", async (req, res) => {
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try {
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const { sessionId } = req.query;
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if (!sessionId) {
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return res.status(400).json({ code: 1, error: "sessionId 必填" });
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}
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// 查询数据库
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const [rows] = await pool.query(
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"SELECT user_id, role, content, image_base64, created_at FROM ai_chat_messages WHERE session_id = ? ORDER BY id ASC",
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[sessionId]
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);
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res.json({
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code: 0,
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sessionId,
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messages: rows,
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});
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} catch (err) {
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console.error("查询会话历史失败:", err);
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res.status(500).json({ code: 1, error: err.message });
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}
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});
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// ====================== API ======================
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app.post("/analyze", upload.single("file"), async (req, res) => {
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try {
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res.setHeader("Content-Type", "text/plain; charset=utf-8");
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res.setHeader("Transfer-Encoding", "chunked");
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res.setHeader("Cache-Control", "no-cache");
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res.setHeader("Connection", "keep-alive");
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const { userPrompt, imageBase64, userId, sessionId } = req.body;
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// 如果前端没有传 sessionId，生成一个
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const sessId = sessionId || Date.now().toString();
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// ------------------ 1️⃣ 保存用户提问 ------------------
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await pool.query(
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"INSERT INTO ai_chat_messages (session_id, user_id, role, content, image_base64) VALUES (?, ?, 'user', ?, ?)",
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[sessId, userId || null, userPrompt || "", imageBase64 || null]
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);
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// ------------------ 2️⃣ 图像分析 ------------------
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const completion = await client.chat.completions.create({
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model: "gpt-4.1",
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stream: true,
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// do_scene: true,
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// do_behavior: true,
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// llm_model: "hunyuan-turbos-latest",
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messages: [
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{
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role: "system",
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content:
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"",
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},
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{
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role: "user",
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content: [
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{ type: "text", text: userPrompt || "请描述图片内容。" },
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imageBase64
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? {
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type: "image_url",
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image_url: {
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url: imageBase64.startsWith("data:")
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? imageBase64
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: `data:image/png;base64,${imageBase64}`,
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},
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}
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: null,
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].filter(Boolean),
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},
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],
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});
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let sceneText = "";
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for await (const chunk of completion) {
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const delta = chunk.choices[0]?.delta?.content || "";
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sceneText += delta;
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if (delta)
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res.write(
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`data: ${JSON.stringify({ type: "scene", content: delta })}\n\n`
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);
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}
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// 保存图像分析结果到数据库
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await pool.query(
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"INSERT INTO ai_chat_messages (session_id, user_id, role, content) VALUES (?, ?, 'assistant', ?)",
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[sessId, userId || null, sceneText]
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);
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// ------------------ 3️⃣ LLM 分析 ------------------
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const llmStream = await client1.chat.completions.create({
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model: "gpt-5-mini",
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stream: true,
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messages: [
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{
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role: "system",
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content:""
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// content: "你是一名新能源项目的图像分析AI分析师。",
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},
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{
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role: "user",
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content: `${sceneText}`,
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// content: `请基于以下场景分析结果提供部署建议或优化意见：\n${sceneText}`,
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},
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],
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});
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let llmText = "";
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for await (const chunk of llmStream) {
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const delta = chunk.choices[0]?.delta?.content || "";
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llmText += delta;
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if (delta)
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res.write(
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`data: ${JSON.stringify({ type: "llm", content: delta })}\n\n`
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);
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}
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// 保存 LLM 输出到数据库
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await pool.query(
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"INSERT INTO ai_chat_messages (session_id, user_id, role, content) VALUES (?, ?, 'assistant', ?)",
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[sessId, userId || null, llmText]
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);
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res.write("data: [DONE]\n\n");
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res.end();
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// 删除上传文件
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if (req.file && req.file.path) {
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fs.unlinkSync(req.file.path);
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}
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} catch (err) {
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console.error("❌ 调用失败:", err.response?.data || err.message);
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res.status(500).json({ code: 1, error: err.response?.data || err.message });
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}
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});
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// 静态文件服务
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app.use("/uploads", express.static("uploads"));
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// 启动服务
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app.listen(port, () => {
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console.log(`✅ 服务器运行：http://localhost:${port}`);
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});
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