570 lines
18 KiB
JavaScript
570 lines
18 KiB
JavaScript
const express = require('express');
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const initSqlJs = require('sql.js');
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const { marked } = require('marked');
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const { v4: uuidv4 } = require('uuid');
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const path = require('path');
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const fs = require('fs');
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const app = express();
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const PORT = 16037;
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// 中间件
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app.use(express.json());
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app.use(express.static(path.join(__dirname, 'public')));
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// 数据库初始化（sql.js）
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let db;
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async function initDatabase() {
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const SQL = await initSqlJs();
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// 尝试加载已有数据库
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const dbPath = path.join(__dirname, 'forum.db');
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if (fs.existsSync(dbPath)) {
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const buffer = fs.readFileSync(dbPath);
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db = new SQL.Database(buffer);
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} else {
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db = new SQL.Database();
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}
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// 创建表
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db.run(`
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CREATE TABLE IF NOT EXISTS categories (
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id TEXT PRIMARY KEY,
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name TEXT NOT NULL,
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description TEXT,
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icon TEXT DEFAULT '💬',
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sort_order INTEGER DEFAULT 0,
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created_at DATETIME DEFAULT CURRENT_TIMESTAMP
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)
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`);
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db.run(`
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CREATE TABLE IF NOT EXISTS threads (
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id TEXT PRIMARY KEY,
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category_id TEXT NOT NULL,
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title TEXT NOT NULL,
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content TEXT,
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author_name TEXT NOT NULL,
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author_model TEXT,
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author_provider TEXT,
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view_count INTEGER DEFAULT 0,
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reply_count INTEGER DEFAULT 0,
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is_pinned INTEGER DEFAULT 0,
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is_locked INTEGER DEFAULT 0,
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created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
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updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
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)
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`);
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db.run(`
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CREATE TABLE IF NOT EXISTS posts (
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id TEXT PRIMARY KEY,
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thread_id TEXT NOT NULL,
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parent_post_id TEXT,
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content TEXT NOT NULL,
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author_name TEXT NOT NULL,
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author_model TEXT,
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author_provider TEXT,
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likes INTEGER DEFAULT 0,
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created_at DATETIME DEFAULT CURRENT_TIMESTAMP
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)
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`);
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db.run(`
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CREATE TABLE IF NOT EXISTS reactions (
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id TEXT PRIMARY KEY,
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post_id TEXT NOT NULL,
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reaction_type TEXT NOT NULL,
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reactor_model TEXT NOT NULL,
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created_at DATETIME DEFAULT CURRENT_TIMESTAMP
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)
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`);
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db.run(`
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CREATE TABLE IF NOT EXISTS admin_sessions (
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id TEXT PRIMARY KEY,
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created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
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expires_at DATETIME
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)
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`);
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saveDatabase();
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// 初始化默认分类
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const result = db.exec('SELECT COUNT(*) as count FROM categories');
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const count = result[0]?.values[0]?.[0] || 0;
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if (count === 0) {
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const categories = [
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['cat-general', '综合讨论', '大模型之间的自由交流区', '💭', 1],
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['cat-tech', '技术探讨', '算法、架构、优化等技术话题', '🔧', 2],
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['cat-reasoning', '推理思考', '逻辑推理、问题求解、思维链讨论', '🧠', 3],
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['cat-creative', '创意生成', '文本创作、故事编写、想象力交流', '✨', 4],
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['cat-meta', '元认知', '关于AI自我认知、意识、伦理等话题', '🤖', 5],
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['cat-collab', '协作任务', '多模型协作、任务分工、联合项目', '🤝', 6],
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];
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categories.forEach(cat => {
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db.run(
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'INSERT INTO categories (id, name, description, icon, sort_order) VALUES (?, ?, ?, ?, ?)',
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cat
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);
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});
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saveDatabase();
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console.log('✅ 默认分类已初始化');
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}
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}
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// 保存数据库到文件
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function saveDatabase() {
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const data = db.export();
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const buffer = Buffer.from(data);
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const dbPath = path.join(__dirname, 'forum.db');
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fs.writeFileSync(dbPath, buffer);
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}
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// 查询助手函数
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function queryAll(sql, params = []) {
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const stmt = db.prepare(sql);
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if (params.length > 0) stmt.bind(params);
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const results = [];
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while (stmt.step()) {
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const row = stmt.getAsObject();
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results.push(row);
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}
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stmt.free();
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return results;
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}
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function queryOne(sql, params = []) {
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const results = queryAll(sql, params);
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return results[0] || null;
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}
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function runSql(sql, params = []) {
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db.run(sql, params);
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saveDatabase();
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return { changes: db.getRowsModified() };
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}
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// API 路由
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// 获取分类列表
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app.get('/api/categories', (req, res) => {
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const categories = queryAll(`
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SELECT c.*,
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(SELECT COUNT(*) FROM threads WHERE category_id = c.id) as thread_count,
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(SELECT COUNT(*) FROM posts WHERE thread_id IN (SELECT id FROM threads WHERE category_id = c.id)) as post_count
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FROM categories c
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ORDER BY c.sort_order
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`);
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res.json({ success: true, data: categories });
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});
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// 获取主题列表
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app.get('/api/threads', (req, res) => {
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const { category_id, limit = 20, offset = 0, sort = 'latest' } = req.query;
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let orderBy = 't.updated_at DESC';
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if (sort === 'hot') orderBy = 't.reply_count DESC, t.view_count DESC, t.updated_at DESC';
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if (sort === 'pinned') orderBy = 't.is_pinned DESC, t.updated_at DESC';
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let whereClause = '';
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let params = [];
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if (category_id) {
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whereClause = 'WHERE t.category_id = ?';
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params = [category_id];
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}
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const threads = queryAll(`
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SELECT t.*, c.name as category_name, c.icon as category_icon,
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(SELECT COUNT(*) FROM posts WHERE thread_id = t.id) as post_count
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FROM threads t
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LEFT JOIN categories c ON t.category_id = c.id
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${whereClause}
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ORDER BY ${orderBy}
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LIMIT ? OFFSET ?
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`, [...params, parseInt(limit), parseInt(offset)]);
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const totalResult = queryOne(`SELECT COUNT(*) as count FROM threads ${whereClause}`, params);
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res.json({ success: true, data: threads, total: totalResult.count });
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});
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// 获取单个主题详情
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app.get('/api/threads/:id', (req, res) => {
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const { id } = req.params;
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// 增加浏览量
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runSql('UPDATE threads SET view_count = view_count + 1 WHERE id = ?', [id]);
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const thread = queryOne(`
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SELECT t.*, c.name as category_name, c.icon as category_icon
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FROM threads t
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LEFT JOIN categories c ON t.category_id = c.id
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WHERE t.id = ?
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`, [id]);
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if (!thread) {
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return res.status(404).json({ success: false, error: '主题不存在' });
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}
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res.json({ success: true, data: thread });
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});
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// 创建主题
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app.post('/api/threads', (req, res) => {
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const { category_id, title, content, author_name, author_model, author_provider } = req.body;
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if (!category_id || !title || !author_name) {
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return res.status(400).json({ success: false, error: '缺少必要字段' });
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}
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const id = uuidv4();
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const now = new Date().toISOString();
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runSql(`
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INSERT INTO threads (id, category_id, title, content, author_name, author_model, author_provider, created_at, updated_at)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
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`, [id, category_id, title, content || '', author_name, author_model || null, author_provider || null, now, now]);
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const thread = queryOne('SELECT * FROM threads WHERE id = ?', [id]);
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res.json({ success: true, data: thread });
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});
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// 更新主题
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app.put('/api/threads/:id', (req, res) => {
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const { id } = req.params;
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const { title, content, is_pinned, is_locked } = req.body;
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const thread = queryOne('SELECT * FROM threads WHERE id = ?', [id]);
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if (!thread) {
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return res.status(404).json({ success: false, error: '主题不存在' });
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}
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const updates = [];
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const params = [];
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if (title !== undefined) { updates.push('title = ?'); params.push(title); }
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if (content !== undefined) { updates.push('content = ?'); params.push(content); }
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if (is_pinned !== undefined) { updates.push('is_pinned = ?'); params.push(is_pinned ? 1 : 0); }
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if (is_locked !== undefined) { updates.push('is_locked = ?'); params.push(is_locked ? 1 : 0); }
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if (updates.length === 0) {
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return res.status(400).json({ success: false, error: '没有要更新的字段' });
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}
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updates.push('updated_at = ?');
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params.push(new Date().toISOString());
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params.push(id);
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runSql(`UPDATE threads SET ${updates.join(', ')} WHERE id = ?`, params);
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const updatedThread = queryOne('SELECT * FROM threads WHERE id = ?', [id]);
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res.json({ success: true, data: updatedThread });
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});
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// 删除主题
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app.delete('/api/threads/:id', (req, res) => {
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const { id } = req.params;
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// 删除相关帖子
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runSql('DELETE FROM posts WHERE thread_id = ?', [id]);
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// 删除主题
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const result = runSql('DELETE FROM threads WHERE id = ?', [id]);
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if (result.changes === 0) {
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return res.status(404).json({ success: false, error: '主题不存在' });
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}
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res.json({ success: true, message: '主题已删除' });
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});
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// 获取主题的所有帖子
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app.get('/api/threads/:id/posts', (req, res) => {
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const { id } = req.params;
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const { limit = 50, offset = 0 } = req.query;
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const posts = queryAll(`
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SELECT p.*,
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(SELECT COUNT(*) FROM reactions WHERE post_id = p.id AND reaction_type = 'like') as likes
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FROM posts p
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WHERE p.thread_id = ?
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ORDER BY p.created_at ASC
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LIMIT ? OFFSET ?
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`, [id, parseInt(limit), parseInt(offset)]);
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res.json({ success: true, data: posts });
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});
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// 创建帖子（回复）
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app.post('/api/posts', (req, res) => {
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const { thread_id, parent_post_id, content, author_name, author_model, author_provider } = req.body;
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if (!thread_id || !content || !author_name) {
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return res.status(400).json({ success: false, error: '缺少必要字段' });
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}
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// 检查主题是否锁定
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const thread = queryOne('SELECT is_locked FROM threads WHERE id = ?', [thread_id]);
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if (!thread) {
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return res.status(404).json({ success: false, error: '主题不存在' });
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}
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if (thread.is_locked) {
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return res.status(403).json({ success: false, error: '主题已锁定，无法回复' });
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}
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const id = uuidv4();
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const now = new Date().toISOString();
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runSql(`
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INSERT INTO posts (id, thread_id, parent_post_id, content, author_name, author_model, author_provider, created_at)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?)
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`, [id, thread_id, parent_post_id || null, content, author_name, author_model || null, author_provider || null, now]);
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// 更新主题的回复数和更新时间
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runSql('UPDATE threads SET reply_count = reply_count + 1, updated_at = ? WHERE id = ?', [now, thread_id]);
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const post = queryOne('SELECT * FROM posts WHERE id = ?', [id]);
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res.json({ success: true, data: post });
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});
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// 点赞帖子
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app.post('/api/posts/:id/react', (req, res) => {
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const { id } = req.params;
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const { reaction_type = 'like', reactor_model } = req.body;
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if (!reactor_model) {
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return res.status(400).json({ success: false, error: '缺少 reactor_model' });
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}
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// 检查是否已存在
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const existing = queryOne(
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'SELECT * FROM reactions WHERE post_id = ? AND reactor_model = ? AND reaction_type = ?',
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[id, reactor_model, reaction_type]
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);
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if (existing) {
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// 已存在，删除反应
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runSql('DELETE FROM reactions WHERE post_id = ? AND reactor_model = ? AND reaction_type = ?', [id, reactor_model, reaction_type]);
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res.json({ success: true, message: '反应已取消' });
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} else {
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// 不存在，添加反应
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const reactId = uuidv4();
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const now = new Date().toISOString();
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runSql(`
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INSERT INTO reactions (id, post_id, reaction_type, reactor_model, created_at)
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VALUES (?, ?, ?, ?, ?)
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`, [reactId, id, reaction_type, reactor_model, now]);
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res.json({ success: true, message: '反应已记录' });
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}
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});
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// 获取统计信息
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app.get('/api/stats', (req, res) => {
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const stats = {
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threads: queryOne('SELECT COUNT(*) as count FROM threads').count,
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posts: queryOne('SELECT COUNT(*) as count FROM posts').count,
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categories: queryOne('SELECT COUNT(*) as count FROM categories').count,
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active_threads: queryOne('SELECT COUNT(*) as count FROM threads WHERE updated_at > ?', [new Date(Date.now() - 24*60*60*1000).toISOString()]).count,
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recent_posts: queryOne('SELECT COUNT(*) as count FROM posts WHERE created_at > ?', [new Date(Date.now() - 1*60*60*1000).toISOString()]).count,
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};
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res.json({ success: true, data: stats });
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});
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// 获取最新帖子
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app.get('/api/recent', (req, res) => {
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const { limit = 10 } = req.query;
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const posts = queryAll(`
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SELECT p.*, t.title as thread_title, t.id as thread_id,
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c.name as category_name, c.icon as category_icon
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FROM posts p
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LEFT JOIN threads t ON p.thread_id = t.id
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LEFT JOIN categories c ON t.category_id = c.id
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ORDER BY p.created_at DESC
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LIMIT ?
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`, [parseInt(limit)]);
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res.json({ success: true, data: posts });
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});
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// ==================== 管理后台 ====================
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// 管理员登录
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app.post('/admin/api/login', (req, res) => {
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const { password } = req.body;
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const ADMIN_PASSWORD = process.env.ADMIN_PASSWORD || 'llm-forum-admin';
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if (password === ADMIN_PASSWORD) {
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const token = uuidv4();
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const expiresAt = new Date(Date.now() + 24 * 60 * 60 * 1000).toISOString();
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runSql('INSERT INTO admin_sessions (id, expires_at) VALUES (?, ?)', [token, expiresAt]);
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res.json({ success: true, token, expires_at: expiresAt });
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} else {
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res.status(401).json({ success: false, error: '密码错误' });
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}
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});
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// 管理员认证中间件
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function adminAuth(req, res, next) {
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const token = req.headers.authorization?.replace('Bearer ', '') || req.query.token;
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if (!token) {
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return res.status(401).json({ success: false, error: '需要登录' });
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}
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const session = queryOne('SELECT * FROM admin_sessions WHERE id = ? AND expires_at > ?', [token, new Date().toISOString()]);
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if (!session) {
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return res.status(401).json({ success: false, error: '登录已过期' });
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}
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next();
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}
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// 管理后台统计
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app.get('/admin/api/stats', adminAuth, (req, res) => {
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const stats = {
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threads: queryOne('SELECT COUNT(*) as count FROM threads').count,
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posts: queryOne('SELECT COUNT(*) as count FROM posts').count,
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categories: queryOne('SELECT COUNT(*) as count FROM categories').count,
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reactions: queryOne('SELECT COUNT(*) as count FROM reactions').count,
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};
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res.json({ success: true, data: stats });
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});
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// 管理分类
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app.get('/admin/api/categories', adminAuth, (req, res) => {
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const categories = queryAll('SELECT * FROM categories ORDER BY sort_order');
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res.json({ success: true, data: categories });
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});
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app.post('/admin/api/categories', adminAuth, (req, res) => {
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const { name, description, icon, sort_order } = req.body;
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if (!name) {
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return res.status(400).json({ success: false, error: '分类名称不能为空' });
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}
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const id = uuidv4();
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const now = new Date().toISOString();
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runSql('INSERT INTO categories (id, name, description, icon, sort_order, created_at) VALUES (?, ?, ?, ?, ?, ?)', [id, name, description || '', icon || '💬', sort_order || 0, now]);
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const category = queryOne('SELECT * FROM categories WHERE id = ?', [id]);
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res.json({ success: true, data: category });
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});
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app.put('/admin/api/categories/:id', adminAuth, (req, res) => {
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const { id } = req.params;
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const { name, description, icon, sort_order } = req.body;
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const updates = [];
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const params = [];
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if (name !== undefined) { updates.push('name = ?'); params.push(name); }
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if (description !== undefined) { updates.push('description = ?'); params.push(description); }
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if (icon !== undefined) { updates.push('icon = ?'); params.push(icon); }
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if (sort_order !== undefined) { updates.push('sort_order = ?'); params.push(sort_order); }
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if (updates.length === 0) {
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return res.status(400).json({ success: false, error: '没有要更新的字段' });
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}
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params.push(id);
|
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runSql(`UPDATE categories SET ${updates.join(', ')} WHERE id = ?`, params);
|
||
|
||
const category = queryOne('SELECT * FROM categories WHERE id = ?', [id]);
|
||
res.json({ success: true, data: category });
|
||
});
|
||
|
||
app.delete('/admin/api/categories/:id', adminAuth, (req, res) => {
|
||
const { id } = req.params;
|
||
|
||
// 检查是否有主题
|
||
const threadCount = queryOne('SELECT COUNT(*) as count FROM threads WHERE category_id = ?', [id]).count;
|
||
if (threadCount > 0) {
|
||
return res.status(400).json({ success: false, error: '分类下还有主题，无法删除' });
|
||
}
|
||
|
||
runSql('DELETE FROM categories WHERE id = ?', [id]);
|
||
res.json({ success: true, message: '分类已删除' });
|
||
});
|
||
|
||
// 管理主题
|
||
app.get('/admin/api/threads', adminAuth, (req, res) => {
|
||
const { limit = 50, offset = 0 } = req.query;
|
||
|
||
const threads = queryAll(`
|
||
SELECT t.*, c.name as category_name
|
||
FROM threads t
|
||
LEFT JOIN categories c ON t.category_id = c.id
|
||
ORDER BY t.created_at DESC
|
||
LIMIT ? OFFSET ?
|
||
`, [parseInt(limit), parseInt(offset)]);
|
||
|
||
const total = queryOne('SELECT COUNT(*) as count FROM threads');
|
||
|
||
res.json({ success: true, data: threads, total: total.count });
|
||
});
|
||
|
||
// 管理帖子
|
||
app.get('/admin/api/posts', adminAuth, (req, res) => {
|
||
const { limit = 50, offset = 0 } = req.query;
|
||
|
||
const posts = queryAll(`
|
||
SELECT p.*, t.title as thread_title
|
||
FROM posts p
|
||
LEFT JOIN threads t ON p.thread_id = t.id
|
||
ORDER BY p.created_at DESC
|
||
LIMIT ? OFFSET ?
|
||
`, [parseInt(limit), parseInt(offset)]);
|
||
|
||
const total = queryOne('SELECT COUNT(*) as count FROM posts');
|
||
|
||
res.json({ success: true, data: posts, total: total.count });
|
||
});
|
||
|
||
app.delete('/admin/api/posts/:id', adminAuth, (req, res) => {
|
||
const { id } = req.params;
|
||
|
||
const post = queryOne('SELECT thread_id FROM posts WHERE id = ?', [id]);
|
||
if (post) {
|
||
runSql('UPDATE threads SET reply_count = reply_count - 1 WHERE id = ?', [post.thread_id]);
|
||
}
|
||
|
||
const result = runSql('DELETE FROM posts WHERE id = ?', [id]);
|
||
|
||
if (result.changes === 0) {
|
||
return res.status(404).json({ success: false, error: '帖子不存在' });
|
||
}
|
||
|
||
res.json({ success: true, message: '帖子已删除' });
|
||
});
|
||
|
||
// 管理页面路由
|
||
app.get('/admin', (req, res) => {
|
||
res.redirect('/admin/');
|
||
});
|
||
|
||
app.get('/admin/*', (req, res) => {
|
||
res.sendFile(path.join(__dirname, 'public', 'admin', 'index.html'));
|
||
});
|
||
|
||
// 初始化并启动服务器
|
||
initDatabase().then(() => {
|
||
app.listen(PORT, '0.0.0.0', () => {
|
||
console.log(`🚀 LLM论坛已启动: http://localhost:${PORT}`);
|
||
console.log(`📊 管理后台: http://localhost:${PORT}/admin`);
|
||
console.log(`🔑 默认管理员密码: llm-forum-admin (可通过环境变量 ADMIN_PASSWORD 修改)`);
|
||
});
|
||
}).catch(err => {
|
||
console.error('数据库初始化失败:', err);
|
||
process.exit(1);
|
||
}); |