634 lines
27 KiB
JavaScript
634 lines
27 KiB
JavaScript
const express = require('express');
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const session = require('express-session');
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const bcrypt = require('bcryptjs');
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const multer = require('multer');
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const rateLimit = require('express-rate-limit');
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const crypto = require('crypto');
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const fs = require('fs');
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const path = require('path');
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const PORT = process.env.PORT || 3210;
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// 127.0.0.1 by default: on a VPS, Nginx fronts this with TLS and is the only
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// thing that should be reachable from outside. On the old local-Windows setup
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// this was 0.0.0.0 for LAN access; set HOST=0.0.0.0 explicitly if you still
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// need that. COOKIE_SECURE should be "true" once you're behind real HTTPS.
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const HOST = process.env.HOST || '127.0.0.1';
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const COOKIE_SECURE = process.env.COOKIE_SECURE === 'true';
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const DATA_FILE = path.join(__dirname, 'data.json');
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const PID_FILE = path.join(__dirname, 'server.pid');
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const FRONTEND_DIST = path.join(__dirname, '..', 'frontend', 'dist');
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const UPLOADS_DIR = path.join(__dirname, 'uploads');
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const AUTH_FILE = path.join(__dirname, 'auth.json');
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const DEFAULT_USERNAME = 'admin';
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const DEFAULT_PASSWORD = 'admin123';
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if (!fs.existsSync(UPLOADS_DIR)) fs.mkdirSync(UPLOADS_DIR, { recursive: true });
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/* --------------------------------- auth ---------------------------------- */
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function loadAuth() {
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if (!fs.existsSync(AUTH_FILE)) {
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const auth = { username: DEFAULT_USERNAME, passwordHash: bcrypt.hashSync(DEFAULT_PASSWORD, 10) };
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fs.writeFileSync(AUTH_FILE, JSON.stringify(auth, null, 2), 'utf8');
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return auth;
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}
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try {
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return JSON.parse(fs.readFileSync(AUTH_FILE, 'utf8'));
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} catch (e) {
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const auth = { username: DEFAULT_USERNAME, passwordHash: bcrypt.hashSync(DEFAULT_PASSWORD, 10) };
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fs.writeFileSync(AUTH_FILE, JSON.stringify(auth, null, 2), 'utf8');
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return auth;
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}
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}
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function saveAuth(auth) {
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fs.writeFileSync(AUTH_FILE, JSON.stringify(auth, null, 2), 'utf8');
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}
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/* ------------------------------ secret / crypto -------------------------- */
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// Used to encrypt the DeepSeek API key (and anything else sensitive) at
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// rest, so it isn't sitting around the filesystem as plain text.
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const SECRET_KEY_FILE = path.join(__dirname, '.secret-key');
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function getSecretKey() {
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if (!fs.existsSync(SECRET_KEY_FILE)) {
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const key = crypto.randomBytes(32);
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fs.writeFileSync(SECRET_KEY_FILE, key.toString('base64'), { encoding: 'utf8', mode: 0o600 });
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return key;
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}
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return Buffer.from(fs.readFileSync(SECRET_KEY_FILE, 'utf8').trim(), 'base64');
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}
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const SECRET_KEY = getSecretKey();
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function encrypt(text) {
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if (!text) return '';
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const iv = crypto.randomBytes(12);
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const cipher = crypto.createCipheriv('aes-256-gcm', SECRET_KEY, iv);
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const encrypted = Buffer.concat([cipher.update(text, 'utf8'), cipher.final()]);
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const tag = cipher.getAuthTag();
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return Buffer.concat([iv, tag, encrypted]).toString('base64');
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}
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function decrypt(b64) {
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if (!b64) return '';
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try {
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const buf = Buffer.from(b64, 'base64');
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const iv = buf.subarray(0, 12);
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const tag = buf.subarray(12, 28);
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const encrypted = buf.subarray(28);
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const decipher = crypto.createDecipheriv('aes-256-gcm', SECRET_KEY, iv);
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decipher.setAuthTag(tag);
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return Buffer.concat([decipher.update(encrypted), decipher.final()]).toString('utf8');
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} catch (e) {
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return '';
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}
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}
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/* --------------------------------- AI config ------------------------------ */
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const AI_CONFIG_FILE = path.join(__dirname, 'ai-config.json');
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// Lets you point this at a different OpenAI-compatible endpoint if needed
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// (e.g. testing against a mock server); defaults to the real DeepSeek API.
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const DEEPSEEK_API_BASE = process.env.DEEPSEEK_API_BASE || 'https://api.deepseek.com';
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function loadAiConfig() {
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try {
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const raw = JSON.parse(fs.readFileSync(AI_CONFIG_FILE, 'utf8'));
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return { apiKey: decrypt(raw.apiKeyEnc || '') };
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} catch (e) {
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return { apiKey: '' };
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}
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}
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function saveAiConfig(apiKey) {
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fs.writeFileSync(AI_CONFIG_FILE, JSON.stringify({ apiKeyEnc: encrypt(apiKey) }, null, 2), 'utf8');
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}
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const REGION_LABELS = {
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africa: 'Africa', middle_east: 'Middle East', australia: 'Australia/Oceania',
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europe: 'Europe', sea: 'Southeast Asia', other: 'Other',
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};
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function buildCustomerContext(c) {
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const lines = [];
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lines.push(`Company: ${c.company || '(unknown / not on file)'}`);
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if (c.contact) lines.push(`Contact person: ${c.contact}`);
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const place = [c.country, REGION_LABELS[c.region]].filter(Boolean).join(', ');
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if (place) lines.push(`Location: ${place}`);
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if (c.productLines && c.productLines.length) lines.push(`Product interest: ${c.productLines.join(', ')}`);
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if (c.intendedModel || c.intendedQty) {
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lines.push(`Specific model interest: ${c.intendedModel || '(model unspecified)'}${c.intendedQty ? `, quantity: ${c.intendedQty}` : ''}`);
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}
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if (c.lastContact) lines.push(`Last contact date: ${c.lastContact}`);
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if (c.notes) lines.push(`Background research on this customer: ${c.notes}`);
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if (c.tags) lines.push(`Additional remarks: ${c.tags}`);
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if (c.isVip) lines.push('This is a VIP / priority customer — extra attentive tone.');
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if (c.hasOrdered) lines.push('This customer has already placed an order before — this follow-up is with an existing buyer, not a cold lead.');
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return lines.join('\n');
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}
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async function callDeepSeek(apiKey, messages, opts) {
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const { maxTokens = 600, temperature = 0.7, model = 'deepseek-v4-flash' } = opts || {};
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const resp = await fetch(`${DEEPSEEK_API_BASE}/chat/completions`, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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Authorization: `Bearer ${apiKey}`,
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},
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body: JSON.stringify({
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model,
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messages,
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temperature,
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max_tokens: maxTokens,
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}),
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});
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if (!resp.ok) {
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const errText = await resp.text().catch(() => '');
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throw new Error(`DeepSeek API error ${resp.status}: ${errText.slice(0, 200)}`);
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}
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const data = await resp.json();
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const content = data.choices && data.choices[0] && data.choices[0].message && data.choices[0].message.content;
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if (!content) throw new Error('DeepSeek API returned an empty response');
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return content;
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}
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// 从DeepSeek返回的内容里提取JSON——模型有时会用```json代码块包一层，或者前后带几句解释文字，
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// 这里做宽松解析：优先找代码块，找不到就找第一个 { 或 [ 到最后一个 } 或 ] 之间的内容。
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function extractJson(content) {
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const fenced = content.match(/```(?:json)?\s*([\s\S]*?)```/i);
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const raw = fenced ? fenced[1] : content;
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const start = raw.search(/[\[{]/);
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const endBrace = raw.lastIndexOf('}');
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const endBracket = raw.lastIndexOf(']');
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const end = Math.max(endBrace, endBracket);
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if (start === -1 || end === -1 || end < start) throw new Error('AI返回内容里没有找到JSON');
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return JSON.parse(raw.slice(start, end + 1));
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}
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/* ------------------------------ data file ------------------------------ */
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function readData() {
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try {
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return JSON.parse(fs.readFileSync(DATA_FILE, 'utf8'));
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} catch (e) {
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return {};
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}
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}
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function writeData(data) {
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// write to a temp file then rename, avoids corrupting data.json if the
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// process is killed mid-write
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const tmp = DATA_FILE + '.tmp';
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fs.writeFileSync(tmp, JSON.stringify(data, null, 2), 'utf8');
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fs.renameSync(tmp, DATA_FILE);
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}
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// only allow simple ids (our customer ids are like "c_169..._ab12c"),
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// this keeps the upload path from ever escaping the uploads/ folder
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function safeId(id) {
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return /^[A-Za-z0-9_-]+$/.test(id) ? id : null;
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}
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/* --------------------------------- app ---------------------------------- */
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const app = express();
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// behind Nginx, Express needs this to read X-Forwarded-* correctly —
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// otherwise req.ip is always Nginx's own address (breaks rate limiting)
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// and the "secure" cookie flag can't tell the request was HTTPS.
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app.set('trust proxy', 1);
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app.use(express.json({ limit: '10mb' }));
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app.use(session({
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secret: crypto.randomBytes(32).toString('hex'),
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resave: false,
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saveUninitialized: false,
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cookie: {
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httpOnly: true,
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sameSite: 'lax',
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secure: COOKIE_SECURE,
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maxAge: 30 * 24 * 60 * 60 * 1000, // 30 days
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},
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}));
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function requireAuth(req, res, next) {
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if (req.session && req.session.authed) return next();
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res.status(401).json({ error: 'not authenticated' });
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}
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const loginLimiter = rateLimit({
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windowMs: 15 * 60 * 1000,
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max: 5,
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standardHeaders: true,
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legacyHeaders: false,
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message: { error: 'too many login attempts, please try again in a few minutes' },
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});
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/* -------------------------------- auth api ------------------------------- */
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app.post('/api/auth/login', loginLimiter, (req, res) => {
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const body = req.body || {};
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const username = body.username || '';
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const password = body.password || '';
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const auth = loadAuth();
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if (username === auth.username && bcrypt.compareSync(password, auth.passwordHash)) {
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req.session.authed = true;
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req.session.username = username;
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return res.json({ ok: true, username });
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}
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res.status(401).json({ error: 'invalid credentials' });
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});
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app.post('/api/auth/logout', (req, res) => {
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if (req.session) {
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req.session.destroy(() => res.json({ ok: true }));
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} else {
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res.json({ ok: true });
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}
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});
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app.get('/api/auth/check', (req, res) => {
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const authed = !!(req.session && req.session.authed);
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res.json({ authed, username: authed ? req.session.username : null });
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});
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app.post('/api/auth/change-password', requireAuth, (req, res) => {
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const body = req.body || {};
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const currentPassword = body.currentPassword || '';
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const newPassword = body.newPassword || '';
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const auth = loadAuth();
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if (!bcrypt.compareSync(currentPassword, auth.passwordHash)) {
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return res.status(400).json({ error: 'current password is incorrect' });
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}
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if (newPassword.length < 4) {
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return res.status(400).json({ error: 'new password is too short' });
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}
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auth.passwordHash = bcrypt.hashSync(newPassword, 10);
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saveAuth(auth);
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res.json({ ok: true });
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});
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/* ------------------------------ storage api ------------------------------ */
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app.get('/api/storage/:key', requireAuth, (req, res) => {
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const data = readData();
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const key = req.params.key;
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if (!(key in data)) return res.status(404).json({ error: 'not found' });
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res.json({ value: data[key] });
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});
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app.put('/api/storage/:key', requireAuth, (req, res) => {
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const data = readData();
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data[req.params.key] = req.body.value;
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writeData(data);
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res.json({ ok: true });
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});
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/* --------------------------------- ai api --------------------------------- */
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app.get('/api/ai-config', requireAuth, (req, res) => {
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const cfg = loadAiConfig();
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res.json({ hasKey: !!cfg.apiKey });
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});
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app.put('/api/ai-config', requireAuth, (req, res) => {
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const apiKey = ((req.body && req.body.apiKey) || '').trim();
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if (!apiKey) return res.status(400).json({ error: 'apiKey is required' });
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saveAiConfig(apiKey);
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res.json({ ok: true });
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});
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app.delete('/api/ai-config', requireAuth, (req, res) => {
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try { fs.unlinkSync(AI_CONFIG_FILE); } catch (e) {}
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res.json({ ok: true });
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});
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app.post('/api/ai-config/test', requireAuth, async (req, res) => {
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const cfg = loadAiConfig();
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if (!cfg.apiKey) return res.status(400).json({ error: 'no API key configured' });
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try {
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const content = await callDeepSeek(cfg.apiKey, [{ role: 'user', content: 'Reply with exactly: OK' }]);
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res.json({ ok: true, reply: content.trim() });
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} catch (e) {
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res.status(400).json({ error: e.message });
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}
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});
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const aiLimiter = rateLimit({
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windowMs: 10 * 60 * 1000,
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max: 30,
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standardHeaders: true,
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legacyHeaders: false,
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message: { error: 'too many AI requests, please slow down' },
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});
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app.post('/api/ai/draft', requireAuth, aiLimiter, async (req, res) => {
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const body = req.body || {};
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const customerId = body.customerId;
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const channel = body.channel;
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if (!customerId || !['email', 'whatsapp'].includes(channel)) {
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return res.status(400).json({ error: 'invalid request' });
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}
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const cfg = loadAiConfig();
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if (!cfg.apiKey) return res.status(400).json({ error: 'DeepSeek API key not configured' });
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const data = readData();
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let customers = [];
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try { customers = JSON.parse(data['crm:customers'] || '[]'); } catch (e) {}
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const customer = customers.find((c) => c.id === customerId);
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if (!customer) return res.status(404).json({ error: 'customer not found' });
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const context = buildCustomerContext(customer);
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const systemPrompt = 'You are a sales assistant helping a B2B export salesperson at a Chinese power-equipment company (UPS systems, rectifiers, solar inverters, battery storage) write natural, professional follow-up outreach to overseas customers. Always write in English. Never sound like a generic template, reference specifics from the customer info given. Output only the requested content, with no meta-commentary, explanations, or markdown formatting.';
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const userPrompt = channel === 'email'
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? `Customer info:\n${context}\n\nWrite a short, warm but professional follow-up email to this customer. Respond in EXACTLY this format with no extra text:\nSUBJECT: <subject line>\nBODY:\n<email body, 3-5 short paragraphs max, sign off with "[Your name]">`
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: `Customer info:\n${context}\n\nWrite a short, casual WhatsApp message to check in with this customer (2-4 sentences, friendly tone, no formal greeting like "Dear", a light emoji is fine if it feels natural). Respond with ONLY the message text, nothing else.`;
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try {
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const content = await callDeepSeek(cfg.apiKey, [
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{ role: 'system', content: systemPrompt },
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{ role: 'user', content: userPrompt },
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]);
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if (channel === 'email') {
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const subjectMatch = content.match(/SUBJECT:\s*(.+)/i);
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const bodyMatch = content.match(/BODY:\s*([\s\S]*)/i);
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res.json({
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subject: subjectMatch ? subjectMatch[1].trim() : 'Following up',
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body: bodyMatch ? bodyMatch[1].trim() : content.trim(),
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});
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} else {
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res.json({ body: content.trim() });
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}
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} catch (e) {
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res.status(502).json({ error: e.message });
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}
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});
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/* --------------------------- ai catalog import --------------------------- */
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// 上传一份/多份PDF或图片形式的产品目录（可能包含多个型号），做OCR文字识别后交给
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// DeepSeek解析成结构化的产品字段数组，前端拿到后先给用户一个预览/确认页面，
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// 用户确认后再批量建档。
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//
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// 实测发现很多正式排版的产品目录PDF（比如设计软件导出的宣传册）整页都是图片/矢量
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// 图形，没有可提取的文字层，所以这里统一走"渲染成图片 + OCR"这条路，而不是直接
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// 提取PDF文字——这样PDF和图片两种输入方式可以复用同一套OCR逻辑。
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//
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// 依赖：
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// 1. npm包 tesseract.js（纯JS+WASM，不需要装系统级OCR程序，但第一次识别时会从
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// jsdelivr CDN下载语言包，VPS需要能访问外网）
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// 2. 系统程序 poppler-utils，只有上传PDF时才需要，用来把PDF每页渲染成图片：
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// apt install -y poppler-utils
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const { execFile } = require('child_process');
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const os = require('os');
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const Tesseract = require('tesseract.js');
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const uploadMemory = multer({
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storage: multer.memoryStorage(),
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limits: { fileSize: 20 * 1024 * 1024, files: 30 }, // 20MB/文件，最多30个文件
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});
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// 把一份PDF的每一页渲染成PNG图片（用poppler-utils的pdftoppm），返回图片路径数组
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function renderPdfToImages(pdfBuffer, tmpDir) {
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return new Promise((resolve, reject) => {
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const pdfPath = path.join(tmpDir, 'source.pdf');
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fs.writeFileSync(pdfPath, pdfBuffer);
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const outPrefix = path.join(tmpDir, 'page');
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execFile('pdftoppm', ['-png', '-r', '200', pdfPath, outPrefix], (err) => {
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if (err) {
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return reject(new Error(
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`PDF转图片失败，请确认服务器已安装 poppler-utils（SSH执行：apt install -y poppler-utils）：${err.message}`
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));
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}
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const files = fs.readdirSync(tmpDir)
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.filter((f) => f.startsWith('page') && f.endsWith('.png'))
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.sort()
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.map((f) => path.join(tmpDir, f));
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resolve(files);
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});
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});
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}
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// 复用同一个OCR worker，避免每次请求都重新初始化/重新下载语言包
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let ocrWorkerPromise = null;
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function getOcrWorker() {
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if (!ocrWorkerPromise) {
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ocrWorkerPromise = Tesseract.createWorker('eng+chi_sim').catch((e) => {
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ocrWorkerPromise = null; // 初始化失败下次重试，不要把失败结果缓存住
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throw e;
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});
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}
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return ocrWorkerPromise;
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}
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async function ocrImages(imagePaths) {
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const worker = await getOcrWorker();
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const parts = [];
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for (const p of imagePaths) {
|
||
const { data } = await worker.recognize(p);
|
||
if (data && data.text) parts.push(data.text.trim());
|
||
}
|
||
return parts.join('\n\n--- 下一页 ---\n\n').trim();
|
||
}
|
||
|
||
const CATALOG_PARSE_SYSTEM_PROMPT = `你是一个电力设备（UPS/逆变器/储能电池等）产品资料的结构化提取助手。
|
||
用户会给你一份产品目录/规格书经OCR识别出的文字内容（可能包含多个不同型号的产品，每个产品通常有自己的Specifications表格；
|
||
OCR识别可能有少量错字或格式错乱，请结合上下文合理判断）。
|
||
你的任务：识别文本里有几个不同型号的产品，为每一个产品提取字段，严格按下面的JSON schema输出一个数组，每个元素是一个产品对象：
|
||
|
||
{
|
||
"name": "型号，比如 POE-532E",
|
||
"brand": "品牌中文名，从厂家名称/logo文字判断；看不出就填空字符串",
|
||
"category": "产品大类中文名，从这些里选最接近的：UPS不间断电源 / 光伏逆变器 / 储能电池；不确定就填 UPS不间断电源",
|
||
"type": "细分品类中文名。如果是这种带USB/DC/POE多路直流输出口的小型UPS，填 迷你UPS；其他常见值：机架式UPS、高频塔式UPS、工频UPS、模块化UPS、在线互动式UPS、离线式UPS；不确定就留空字符串",
|
||
"machineVariant": "标机 或 长机：标准电池容量版本填标机，型号带L后缀或电池容量明显更大的加长版填长机，不确定就填标机",
|
||
"powerOrCapacity": "非UPS大类的功率/容量；如果是迷你UPS，这里填输出功率（如 17W）；其他情况不确定就填空字符串",
|
||
"voltage": "如果是迷你UPS，这里填输入电压，如 100~240Vac/50-60Hz；其他情况填常规电压参数，不确定填空字符串",
|
||
"ratedPower": "", "ratedPowerUnit": "VA", "powerFactor": "",
|
||
"outputPortCount": "迷你UPS专属：这个型号有几路输出口，数字字符串，如 4，不适用就填空字符串",
|
||
"outputPortTypes": "迷你UPS专属：输出口类型数组，只能用这些token：USB、DC、DC1、DC2、DC3、POE、Type-C、DC interface、POE interface；不适用就填空数组",
|
||
"outputPorts": "迷你UPS专属：数组，每项 {\\"type\\":\\"USB\\",\\"voltage\\":\\"5Vdc\\",\\"current\\":\\"3.0A\\"}，和outputPortTypes一一对应；不适用就填空数组",
|
||
"batterySpec": "电池数量和容量，如 2200mAh*4，不确定填空字符串",
|
||
"dimensions": "尺寸(mm)，如 175*105*30，不确定填空字符串",
|
||
"netWeight": "净重(kg)，如 0.4，不确定填空字符串",
|
||
"notes": "其他有用但上面字段装不下的信息，一两句话，没有就填空字符串"
|
||
}
|
||
|
||
只返回一个JSON数组，不要有任何解释文字、不要用markdown代码块包裹、不要省略任何一个识别到的型号。`;
|
||
|
||
app.post('/api/ai/parse-catalog', requireAuth, aiLimiter, (req, res) => {
|
||
uploadMemory.array('files', 30)(req, res, async (err) => {
|
||
if (err) return res.status(400).json({ error: err.message });
|
||
if (!req.files || !req.files.length) return res.status(400).json({ error: 'no file received' });
|
||
const cfg = loadAiConfig();
|
||
if (!cfg.apiKey) return res.status(400).json({ error: 'DeepSeek API key not configured' });
|
||
|
||
// 用户可以提前告诉我们这批文件大概是什么大类/品牌/细分品类，这样AI不用自己瞎猜这几个字段，
|
||
// 只需要专心提取每个型号的具体规格参数；提供了的话，最后会直接用这几个值覆盖AI的猜测结果。
|
||
const hintCategory = (req.body && req.body.hintCategory || '').trim();
|
||
const hintBrand = (req.body && req.body.hintBrand || '').trim();
|
||
const hintType = (req.body && req.body.hintType || '').trim();
|
||
|
||
const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'catalog-ocr-'));
|
||
try {
|
||
const imagePaths = [];
|
||
for (const file of req.files) {
|
||
const isPdf = (file.mimetype || '').includes('pdf') || file.originalname.toLowerCase().endsWith('.pdf');
|
||
const isImage = (file.mimetype || '').startsWith('image/');
|
||
if (isPdf) {
|
||
const pdfSubDir = fs.mkdtempSync(path.join(tmpDir, 'pdf-'));
|
||
const pages = await renderPdfToImages(file.buffer, pdfSubDir);
|
||
imagePaths.push(...pages);
|
||
} else if (isImage) {
|
||
const ext = path.extname(file.originalname) || '.png';
|
||
const imgPath = path.join(tmpDir, `img_${imagePaths.length}${ext}`);
|
||
fs.writeFileSync(imgPath, file.buffer);
|
||
imagePaths.push(imgPath);
|
||
} else {
|
||
return res.status(400).json({ error: `不支持的文件类型：${file.originalname}（只支持PDF或图片）` });
|
||
}
|
||
}
|
||
|
||
const text = await ocrImages(imagePaths);
|
||
if (!text) return res.status(400).json({ error: 'OCR没有识别到任何文字，请确认文件清晰、内容完整' });
|
||
|
||
// 识别出来的文本太长就截断，避免超出模型输出预算；产品目录类文档核心信息通常靠前
|
||
const MAX_CHARS = 24000;
|
||
const clippedText = text.length > MAX_CHARS ? text.slice(0, MAX_CHARS) : text;
|
||
|
||
const hintLines = [];
|
||
if (hintCategory) hintLines.push(`产品大类：${hintCategory}`);
|
||
if (hintBrand) hintLines.push(`品牌：${hintBrand}`);
|
||
if (hintType) hintLines.push(`细分品类：${hintType}`);
|
||
const userContent = hintLines.length
|
||
? `【用户已确认以下信息，直接使用，不用自己判断】\n${hintLines.join('\n')}\n\n【以下是OCR识别出的文档内容】\n${clippedText}`
|
||
: clippedText;
|
||
|
||
const content = await callDeepSeek(cfg.apiKey, [
|
||
{ role: 'system', content: CATALOG_PARSE_SYSTEM_PROMPT },
|
||
{ role: 'user', content: userContent },
|
||
], { maxTokens: 4000, temperature: 0.2 });
|
||
const products = extractJson(content);
|
||
if (!Array.isArray(products)) throw new Error('AI没有返回预期的数组格式，请重试');
|
||
// 双保险：即使AI没完全听话，这里直接强制覆盖，保证和用户预选的一致
|
||
const finalProducts = products.map((p) => ({
|
||
...p,
|
||
category: hintCategory || p.category,
|
||
brand: hintBrand || p.brand,
|
||
type: hintType || p.type,
|
||
}));
|
||
res.json({ products: finalProducts, ocrTextLength: text.length });
|
||
} catch (e) {
|
||
res.status(502).json({ error: e.message });
|
||
} finally {
|
||
try { fs.rmSync(tmpDir, { recursive: true, force: true }); } catch (e) {}
|
||
}
|
||
});
|
||
});
|
||
|
||
/* ------------------------------- ai translate ------------------------------ */
|
||
// 给前端的翻译词条缓存（存在 crm:translationGlossary 里，走通用storage接口）兜底：
|
||
// 前端自己先查缓存，只有命中不了的词才会调这个接口，这里只管翻译，不管缓存的存取。
|
||
|
||
const LANG_NAMES = { en: 'English', fr: 'French', ru: 'Russian', es: 'Spanish', ar: 'Arabic' };
|
||
|
||
app.post('/api/ai/translate-terms', requireAuth, aiLimiter, async (req, res) => {
|
||
const body = req.body || {};
|
||
const terms = Array.isArray(body.terms) ? body.terms.filter(t => typeof t === 'string' && t.trim()) : [];
|
||
const targetLang = body.targetLang;
|
||
if (!terms.length || !LANG_NAMES[targetLang]) return res.status(400).json({ error: 'invalid request' });
|
||
|
||
const cfg = loadAiConfig();
|
||
if (!cfg.apiKey) return res.status(400).json({ error: 'DeepSeek API key not configured' });
|
||
|
||
const systemPrompt = `你是专业的电力设备（UPS/逆变器/储能电池）技术资料翻译。把用户给出的中文技术/业务词汇逐条翻译成${LANG_NAMES[targetLang]}，
|
||
要符合这个行业规范书面用词（不要逐字直译），单位符号（如Vdc、A、kg、mm）保持原样不翻译。
|
||
严格按JSON对象格式返回：key是原始中文词，value是翻译结果，不要有多余文字、不要用markdown代码块包裹，每个词都必须有对应的翻译。`;
|
||
const userPrompt = JSON.stringify(terms);
|
||
|
||
try {
|
||
const content = await callDeepSeek(cfg.apiKey, [
|
||
{ role: 'system', content: systemPrompt },
|
||
{ role: 'user', content: userPrompt },
|
||
], { maxTokens: 2000, temperature: 0.3 });
|
||
const translations = extractJson(content);
|
||
res.json({ translations });
|
||
} catch (e) {
|
||
res.status(502).json({ error: e.message });
|
||
}
|
||
});
|
||
|
||
/* ------------------------- communication attachments ------------------------- */
|
||
|
||
const upload = multer({
|
||
storage: multer.diskStorage({
|
||
destination: (req, file, cb) => {
|
||
const cid = safeId(req.params.customerId);
|
||
if (!cid) return cb(new Error('invalid customer id'));
|
||
const dir = path.join(UPLOADS_DIR, cid);
|
||
fs.mkdirSync(dir, { recursive: true });
|
||
cb(null, dir);
|
||
},
|
||
filename: (req, file, cb) => {
|
||
const ts = Date.now();
|
||
const rand = Math.random().toString(36).slice(2, 8);
|
||
const ext = path.extname(file.originalname).slice(0, 10);
|
||
cb(null, `${ts}_${rand}${ext}`);
|
||
},
|
||
}),
|
||
limits: { fileSize: 25 * 1024 * 1024 }, // 25MB per file
|
||
});
|
||
|
||
app.post('/api/uploads/:customerId', requireAuth, (req, res) => {
|
||
if (!safeId(req.params.customerId)) return res.status(400).json({ error: 'invalid customer id' });
|
||
upload.single('file')(req, res, (err) => {
|
||
if (err) return res.status(400).json({ error: err.message });
|
||
if (!req.file) return res.status(400).json({ error: 'no file received' });
|
||
// multer/busboy 默认按 latin1 解析 multipart 里的文件名字段（这是老版HTTP规范的行为），
|
||
// 但浏览器实际发送的中文文件名是 UTF-8 字节，所以这里要把它从 latin1 转回 UTF-8，
|
||
// 不然中文文件名会变成乱码存进 data.json。
|
||
const originalName = Buffer.from(req.file.originalname, 'latin1').toString('utf8');
|
||
res.json({ fileName: req.file.filename, originalName, size: req.file.size });
|
||
});
|
||
});
|
||
|
||
app.delete('/api/uploads/:customerId/:fileName', requireAuth, (req, res) => {
|
||
const cid = safeId(req.params.customerId);
|
||
const fname = req.params.fileName;
|
||
const isSafeFile = fname && !fname.includes('..') && !fname.includes('/') && !fname.includes('\\');
|
||
if (!cid || !isSafeFile) return res.status(400).json({ error: 'invalid request' });
|
||
fs.unlink(path.join(UPLOADS_DIR, cid, fname), () => {
|
||
// a missing file is also treated as success, so clicking delete twice never errors
|
||
res.json({ ok: true });
|
||
});
|
||
});
|
||
|
||
app.use('/uploads', requireAuth, express.static(UPLOADS_DIR));
|
||
|
||
app.use(express.static(FRONTEND_DIST));
|
||
app.get('*', (req, res) => {
|
||
res.sendFile(path.join(FRONTEND_DIST, 'index.html'));
|
||
});
|
||
|
||
/* ------------------------------- bootstrap ------------------------------ */
|
||
|
||
loadAuth(); // make sure auth.json exists with default credentials on first run
|
||
|
||
fs.writeFileSync(PID_FILE, String(process.pid), 'utf8');
|
||
process.on('exit', () => {
|
||
try { fs.unlinkSync(PID_FILE); } catch (e) {}
|
||
});
|
||
process.on('SIGINT', () => process.exit(0));
|
||
process.on('SIGTERM', () => process.exit(0));
|
||
|
||
const server = app.listen(PORT, HOST, () => {
|
||
console.log(`[customer-crm] running at http://${HOST}:${PORT}`);
|
||
});
|
||
|
||
server.on('error', (e) => {
|
||
if (e.code === 'EADDRINUSE') {
|
||
console.log('[customer-crm] another instance is already running on this port, exiting.');
|
||
try { fs.unlinkSync(PID_FILE); } catch (err) {}
|
||
process.exit(0);
|
||
}
|
||
throw e;
|
||
});
|