2025-08-23: first version which meets basic requirements of backend

chatroom @ e7733eee

-Subproject commit e7733eeed0352b332d2995dd0dc268f25830ff10

chatroom/.gitignore

+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/versions
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-debug.log*
+
+# env files (can opt-in for committing if needed)
+.env*
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts
+
+/generated/prisma

chatroom/README.md

+This is a [Next.js](https://nextjs.org) project bootstrapped with [`create-next-app`](https://nextjs.org/docs/app/api-reference/cli/create-next-app).
+
+## Getting Started
+
+First, run the development server:
+
+```bash
+npm run dev
+# or
+yarn dev
+# or
+pnpm dev
+# or
+bun dev
+```
+
+Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
+
+You can start editing the page by modifying `app/page.tsx`. The page auto-updates as you edit the file.
+
+This project uses [`next/font`](https://nextjs.org/docs/app/building-your-application/optimizing/fonts) to automatically optimize and load [Geist](https://vercel.com/font), a new font family for Vercel.
+
+## Learn More
+
+To learn more about Next.js, take a look at the following resources:
+
+- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
+- [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
+
+You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js) - your feedback and contributions are welcome!
+
+## Deploy on Vercel
+
+The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js.
+
+Check out our [Next.js deployment documentation](https://nextjs.org/docs/app/building-your-application/deploying) for more details.

chatroom/eslint.config.mjs

+import { dirname } from "path";
+import { fileURLToPath } from "url";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+});
+
+const eslintConfig = [
+  ...compat.extends("next/core-web-vitals", "next/typescript"),
+];
+
+export default eslintConfig;

chatroom/next.config.ts

+import type { NextConfig } from "next";
+
+const nextConfig: NextConfig = {
+  /* config options here */
+};
+
+export default nextConfig;

chatroom/package.json

+{
+  "name": "chatroom",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "next lint"
+  },
+  "dependencies": {
+    "@prisma/client": "^6.14.0",
+    "bcryptjs": "^3.0.2",
+    "jsonwebtoken": "^9.0.2",
+    "next": "15.4.5",
+    "prisma": "^6.14.0",
+    "react": "19.1.0",
+    "react-dom": "19.1.0",
+    "swr": "^2.3.6"
+  },
+  "devDependencies": {
+    "@eslint/eslintrc": "^3",
+    "@types/bcryptjs": "^2.4.6",
+    "@types/jsonwebtoken": "^9.0.10",
+    "@types/node": "^20",
+    "@types/react": "^19.1.9",
+    "@types/react-dom": "^19.1.7",
+    "eslint": "^9",
+    "eslint-config-next": "15.4.5",
+    "typescript": "^5"
+  }
+}

chatroom/prisma/migrations/20250821162520_init/migration.sql

+-- CreateTable
+CREATE TABLE "User" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "username" TEXT NOT NULL,
+    "password" TEXT NOT NULL,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- CreateTable
+CREATE TABLE "Room" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "name" TEXT NOT NULL,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- CreateTable
+CREATE TABLE "Message" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "content" TEXT NOT NULL,
+    "sender" TEXT NOT NULL,
+    "roomId" INTEGER NOT NULL,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "User_username_key" ON "User"("username");

chatroom/prisma/migrations/migration_lock.toml

+# Please do not edit this file manually
+# It should be added in your version-control system (e.g., Git)
+provider = "sqlite"

chatroom/prisma/schema.prisma

+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "sqlite"
+  url      = "file:./dev.db"
+}
+
+model User {
+  id        Int      @id @default(autoincrement())
+  username  String   @unique
+  password  String   // 存 bcrypt 哈希
+  createdAt DateTime @default(now())
+}
+
+model Room {
+  id        Int      @id @default(autoincrement())
+  name      String
+  createdAt DateTime @default(now())
+}
+
+model Message {
+  id        Int      @id @default(autoincrement())
+  content   String
+  sender    String
+  roomId    Int
+  createdAt DateTime @default(now())
+}
\ No newline at end of file

chatroom/public/file.svg

+<svg fill="none" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg"><path d="M14.5 13.5V5.41a1 1 0 0 0-.3-.7L9.8.29A1 1 0 0 0 9.08 0H1.5v13.5A2.5 2.5 0 0 0 4 16h8a2.5 2.5 0 0 0 2.5-2.5m-1.5 0v-7H8v-5H3v12a1 1 0 0 0 1 1h8a1 1 0 0 0 1-1M9.5 5V2.12L12.38 5zM5.13 5h-.62v1.25h2.12V5zm-.62 3h7.12v1.25H4.5zm.62 3h-.62v1.25h7.12V11z" clip-rule="evenodd" fill="#666" fill-rule="evenodd"/></svg>
\ No newline at end of file

chatroom/public/globe.svg

+<svg fill="none" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><g clip-path="url(#a)"><path fill-rule="evenodd" clip-rule="evenodd" d="M10.27 14.1a6.5 6.5 0 0 0 3.67-3.45q-1.24.21-2.7.34-.31 1.83-.97 3.1M8 16A8 8 0 1 0 8 0a8 8 0 0 0 0 16m.48-1.52a7 7 0 0 1-.96 0H7.5a4 4 0 0 1-.84-1.32q-.38-.89-.63-2.08a40 40 0 0 0 3.92 0q-.25 1.2-.63 2.08a4 4 0 0 1-.84 1.31zm2.94-4.76q1.66-.15 2.95-.43a7 7 0 0 0 0-2.58q-1.3-.27-2.95-.43a18 18 0 0 1 0 3.44m-1.27-3.54a17 17 0 0 1 0 3.64 39 39 0 0 1-4.3 0 17 17 0 0 1 0-3.64 39 39 0 0 1 4.3 0m1.1-1.17q1.45.13 2.69.34a6.5 6.5 0 0 0-3.67-3.44q.65 1.26.98 3.1M8.48 1.5l.01.02q.41.37.84 1.31.38.89.63 2.08a40 40 0 0 0-3.92 0q.25-1.2.63-2.08a4 4 0 0 1 .85-1.32 7 7 0 0 1 .96 0m-2.75.4a6.5 6.5 0 0 0-3.67 3.44 29 29 0 0 1 2.7-.34q.31-1.83.97-3.1M4.58 6.28q-1.66.16-2.95.43a7 7 0 0 0 0 2.58q1.3.27 2.95.43a18 18 0 0 1 0-3.44m.17 4.71q-1.45-.12-2.69-.34a6.5 6.5 0 0 0 3.67 3.44q-.65-1.27-.98-3.1" fill="#666"/></g><defs><clipPath id="a"><path fill="#fff" d="M0 0h16v16H0z"/></clipPath></defs></svg>
\ No newline at end of file

chatroom/public/next.svg

+<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 394 80"><path fill="#000" d="M262 0h68.5v12.7h-27.2v66.6h-13.6V12.7H262V0ZM149 0v12.7H94v20.4h44.3v12.6H94v21h55v12.6H80.5V0h68.7zm34.3 0h-17.8l63.8 79.4h17.9l-32-39.7 32-39.6h-17.9l-23 28.6-23-28.6zm18.3 56.7-9-11-27.1 33.7h17.8l18.3-22.7z"/><path fill="#000" d="M81 79.3 17 0H0v79.3h13.6V17l50.2 62.3H81Zm252.6-.4c-1 0-1.8-.4-2.5-1s-1.1-1.6-1.1-2.6.3-1.8 1-2.5 1.6-1 2.6-1 1.8.3 2.5 1a3.4 3.4 0 0 1 .6 4.3 3.7 3.7 0 0 1-3 1.8zm23.2-33.5h6v23.3c0 2.1-.4 4-1.3 5.5a9.1 9.1 0 0 1-3.8 3.5c-1.6.8-3.5 1.3-5.7 1.3-2 0-3.7-.4-5.3-1s-2.8-1.8-3.7-3.2c-.9-1.3-1.4-3-1.4-5h6c.1.8.3 1.6.7 2.2s1 1.2 1.6 1.5c.7.4 1.5.5 2.4.5 1 0 1.8-.2 2.4-.6a4 4 0 0 0 1.6-1.8c.3-.8.5-1.8.5-3V45.5zm30.9 9.1a4.4 4.4 0 0 0-2-3.3 7.5 7.5 0 0 0-4.3-1.1c-1.3 0-2.4.2-3.3.5-.9.4-1.6 1-2 1.6a3.5 3.5 0 0 0-.3 4c.3.5.7.9 1.3 1.2l1.8 1 2 .5 3.2.8c1.3.3 2.5.7 3.7 1.2a13 13 0 0 1 3.2 1.8 8.1 8.1 0 0 1 3 6.5c0 2-.5 3.7-1.5 5.1a10 10 0 0 1-4.4 3.5c-1.8.8-4.1 1.2-6.8 1.2-2.6 0-4.9-.4-6.8-1.2-2-.8-3.4-2-4.5-3.5a10 10 0 0 1-1.7-5.6h6a5 5 0 0 0 3.5 4.6c1 .4 2.2.6 3.4.6 1.3 0 2.5-.2 3.5-.6 1-.4 1.8-1 2.4-1.7a4 4 0 0 0 .8-2.4c0-.9-.2-1.6-.7-2.2a11 11 0 0 0-2.1-1.4l-3.2-1-3.8-1c-2.8-.7-5-1.7-6.6-3.2a7.2 7.2 0 0 1-2.4-5.7 8 8 0 0 1 1.7-5 10 10 0 0 1 4.3-3.5c2-.8 4-1.2 6.4-1.2 2.3 0 4.4.4 6.2 1.2 1.8.8 3.2 2 4.3 3.4 1 1.4 1.5 3 1.5 5h-5.8z"/></svg>
\ No newline at end of file

chatroom/public/vercel.svg

+<svg fill="none" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1155 1000"><path d="m577.3 0 577.4 1000H0z" fill="#fff"/></svg>
\ No newline at end of file

chatroom/public/window.svg

+<svg fill="none" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill-rule="evenodd" clip-rule="evenodd" d="M1.5 2.5h13v10a1 1 0 0 1-1 1h-11a1 1 0 0 1-1-1zM0 1h16v11.5a2.5 2.5 0 0 1-2.5 2.5h-11A2.5 2.5 0 0 1 0 12.5zm3.75 4.5a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5M7 4.75a.75.75 0 1 1-1.5 0 .75.75 0 0 1 1.5 0m1.75.75a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5" fill="#666"/></svg>
\ No newline at end of file

chatroom/src/app/api/auth/login/route.ts

+// chatroom/src/app/api/auth/login/route.ts
+import { NextRequest, NextResponse } from 'next/server';
+import bcrypt from 'bcryptjs';
+import jwt from 'jsonwebtoken';
+import { PrismaClient } from '@prisma/client';
+
+const prisma = new PrismaClient();
+const JWT_SECRET = process.env.JWT_SECRET || 'dev_secret';
+
+export async function POST(req: NextRequest) {
+  try {
+    const { username, password } = await req.json();
+    const user = await prisma.user.findUnique({ where: { username } });
+    if (!user || !(await bcrypt.compare(password, user.password))) {
+      return NextResponse.json({ code: 1, message: '用户名或密码错误' }, { status: 401 });
+    }
+
+    const token = jwt.sign({ sub: user.id, username: user.username }, JWT_SECRET, { expiresIn: '7d' });
+    return NextResponse.json({ code: 0, data: { accessToken: token } });
+  } catch {
+    return NextResponse.json({ code: 1, message: '服务器错误' }, { status: 500 });
+  }
+}
\ No newline at end of file

chatroom/src/app/api/auth/signup/route.ts

+// chatroom/src/app/api/auth/signup/route.ts
+import { NextRequest, NextResponse } from 'next/server';
+import bcrypt from 'bcryptjs';
+import { PrismaClient } from '@prisma/client';
+
+const prisma = new PrismaClient();
+
+export async function POST(req: NextRequest) {
+  try {
+    const { username, password } = await req.json();
+    if (!username || !password)
+      return NextResponse.json({ code: 1, message: '参数缺失' }, { status: 400 });
+
+    const exists = await prisma.user.findUnique({ where: { username } });
+    if (exists)
+      return NextResponse.json({ code: 1, message: '用户名已存在' }, { status: 400 });
+
+    const hashed = await bcrypt.hash(password, 10);
+    await prisma.user.create({ data: { username, password: hashed } });
+    return NextResponse.json({ code: 0, message: '注册成功' });
+  } catch {
+    return NextResponse.json({ code: 1, message: '服务器错误' }, { status: 500 });
+  }
+}
\ No newline at end of file

chatroom/src/app/api/message/add/route.ts

+// chatroom/src/app/api/message/add/route.ts
+import { NextRequest, NextResponse } from 'next/server';
+import { PrismaClient } from '@prisma/client';
+
+const prisma = new PrismaClient();
+
+export async function POST(req: NextRequest) {
+  try {
+    const { roomId, content, sender } = await req.json();
+    
+    if (!roomId || !content || !sender) {
+      return NextResponse.json({ 
+        code: 1, 
+        message: '参数缺失' 
+      }, { status: 400 });
+    }
+
+    const message = await prisma.message.create({
+      data: { 
+        roomId: Number(roomId), 
+        content, 
+        sender 
+      },
+    });
+
+    return NextResponse.json({ 
+      code: 0, 
+      data: null,
+      message: '发送成功' 
+    });
+  } catch (error) {
+    console.error('发送消息失败:', error);
+    return NextResponse.json({ 
+      code: 1, 
+      message: '发送消息失败' 
+    }, { status: 500 });
+  }
+}
\ No newline at end of file

chatroom/src/app/api/message/getUpdate/route.ts

+// src/app/api/room/message/getUpdate/route.ts
+import { NextRequest, NextResponse } from 'next/server';
+import { PrismaClient } from '@prisma/client';
+
+const prisma = new PrismaClient();
+
+export async function GET(req: NextRequest) {
+  try {
+    const { searchParams } = new URL(req.url);
+    const roomId = searchParams.get('roomId');
+    const sinceMessageId = searchParams.get('sinceMessageId');
+
+    if (!roomId || !sinceMessageId) {
+      return NextResponse.json({ code: 1, message: '缺少参数' }, { status: 400 });
+    }
+
+    const list = await prisma.message.findMany({
+      where: { roomId: Number(roomId), id: { gt: Number(sinceMessageId) } },
+      orderBy: { createdAt: 'asc' },
+    });
+
+    const messages = list.map((m) => ({
+      messageId: m.id,
+      roomId: m.roomId,
+      sender: m.sender,
+      content: m.content,
+      time: m.createdAt.getTime(),
+    }));
+
+    return NextResponse.json({ code: 0, data: { messages } });
+  } catch (e) {
+    console.error('增量拉取失败:', e);
+    return NextResponse.json({ code: 1, message: '服务器错误' }, { status: 500 });
+  }
+}
\ No newline at end of file