Initial

.gitignore

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+node_modules
+# Keep environment variables out of version control
+.env
+
+/generated/prisma

middleware/authMiddleware.js

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+const jwt = require("jsonwebtoken");
+
+module.exports = (req, res, next) => {
+  const authHeader = req.headers.authorization;
+  console.log("Authorization Header:", authHeader); // <---
+
+  if (!authHeader) return res.status(401).json({ error: "Token yok" });
+
+  const token = authHeader.split(" ")[1];
+  try {
+    const decoded = jwt.verify(token, process.env.JWT_SECRET);
+    console.log("Decoded Token:", decoded); // <---
+    req.user = decoded;
+    next();
+  } catch (err) {
+    console.error("JWT verify error:", err.message);
+    return res.status(401).json({ error: "Token geçersiz" });
+  }
+};

package.json

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+{
+  "name": "backend",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "type": "commonjs",
+  "dependencies": {
+    "@prisma/client": "^6.18.0",
+    "bcryptjs": "^3.0.2",
+    "cors": "^2.8.5",
+    "express": "^5.1.0",
+    "jsonwebtoken": "^9.0.2"
+  },
+  "devDependencies": {
+    "@types/cors": "^2.8.19",
+    "@types/express": "^5.0.5",
+    "@types/node": "^24.9.2",
+    "prisma": "^6.18.0",
+    "ts-node": "^10.9.2",
+    "typescript": "^5.9.3"
+  }
+}

prisma/migrations/20251030135832_init_user/migration.sql

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+-- CreateTable
+CREATE TABLE "User" (
+    "id" SERIAL NOT NULL,
+    "username" TEXT NOT NULL,
+    "email" TEXT NOT NULL,
+    "passwordHash" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "User_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "User_username_key" ON "User"("username");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "User_email_key" ON "User"("email");

prisma/migrations/20251030140011_init_user/migration.sql

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+-- CreateTable
+CREATE TABLE "Deal" (
+    "id" SERIAL NOT NULL,
+    "title" TEXT NOT NULL,
+    "description" TEXT,
+    "url" TEXT,
+    "imageUrl" TEXT,
+    "price" DOUBLE PRECISION,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+    "userId" INTEGER NOT NULL,
+
+    CONSTRAINT "Deal_pkey" PRIMARY KEY ("id")
+);
+
+-- AddForeignKey
+ALTER TABLE "Deal" ADD CONSTRAINT "Deal_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

prisma/migrations/20251030140633_fix_user_updatedat_default/migration.sql

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+-- AlterTable
+ALTER TABLE "Deal" ALTER COLUMN "updatedAt" SET DEFAULT CURRENT_TIMESTAMP;
+
+-- AlterTable
+ALTER TABLE "User" ALTER COLUMN "updatedAt" SET DEFAULT CURRENT_TIMESTAMP;

prisma/migrations/20251030215000_user_deal_vote/migration.sql

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+-- CreateTable
+CREATE TABLE "DealVote" (
+    "id" SERIAL NOT NULL,
+    "dealId" INTEGER NOT NULL,
+    "userId" INTEGER NOT NULL,
+    "voteType" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "DealVote_pkey" PRIMARY KEY ("id")
+);
+
+-- AddForeignKey
+ALTER TABLE "DealVote" ADD CONSTRAINT "DealVote_dealId_fkey" FOREIGN KEY ("dealId") REFERENCES "Deal"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "DealVote" ADD CONSTRAINT "DealVote_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

prisma/migrations/20251030222454_user_deal_vote_fix/migration.sql

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+-- AlterTable
+ALTER TABLE "Deal" ADD COLUMN     "score" INTEGER NOT NULL DEFAULT 0,
+ALTER COLUMN "updatedAt" DROP DEFAULT;

prisma/migrations/migration_lock.toml

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

prisma/schema.prisma

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+// This is your Prisma schema file,
+// learn more about it in the docs: https://pris.ly/d/prisma-schema
+
+// Looking for ways to speed up your queries, or scale easily with your serverless or edge functions?
+// Try Prisma Accelerate: https://pris.ly/cli/accelerate-init
+
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+model User {
+  id           Int        @id @default(autoincrement())
+  username     String     @unique
+  email        String     @unique
+  passwordHash String
+  createdAt    DateTime   @default(now())
+  updatedAt    DateTime   @default(now()) @updatedAt
+  Deal         Deal[]
+  votes        DealVote[]
+}
+
+model Deal {
+  id          Int      @id @default(autoincrement())
+  title       String
+  description String?
+  url         String?
+  imageUrl    String?
+  price       Float?
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+  userId      Int
+
+  // yeni alan:
+  score Int @default(0)
+
+  user  User       @relation(fields: [userId], references: [id])
+  votes DealVote[]
+}
+
+model DealVote {
+  id        Int      @id @default(autoincrement())
+  dealId    Int
+  userId    Int
+  voteType  String // "UP" veya "DOWN"
+  createdAt DateTime @default(now())
+
+  deal Deal @relation(fields: [dealId], references: [id])
+  user User @relation(fields: [userId], references: [id])
+}

routes/authRoutes.js

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+const express = require("express");
+const bcrypt = require("bcryptjs");
+const jwt = require("jsonwebtoken");
+const { PrismaClient } = require("@prisma/client");
+const generateToken = require("../utils/generateToken");
+
+const router = express.Router();
+const prisma = new PrismaClient();
+
+
+// Kayıt ol
+router.post("/register", async (req, res) => {
+  try {
+    const { username, email, password } = req.body;
+
+    const existingUser = await prisma.user.findUnique({ where: { email } });
+    if (existingUser) return res.status(400).json({ message: "Bu e-posta zaten kayıtlı." });
+
+    const hashedPassword = await bcrypt.hash(password, 10);
+
+    const user = await prisma.user.create({
+      data: { username, email, passwordHash: hashedPassword },
+    });
+
+    const token = generateToken(user.id);
+
+    res.json({ token, user: { id: user.id, username: user.username, email: user.email } });
+  } catch (err) {
+    res.status(500).json({ message: "Kayıt işlemi başarısız.", error: err.message });
+  }
+});
+
+
+// Giriş yap
+router.post("/login", async (req, res) => {
+  try {
+    const { email, password } = req.body;
+
+    const user = await prisma.user.findUnique({ where: { email } });
+    if (!user)
+      return res.status(400).json({ message: "Kullanıcı bulunamadı." });
+
+    const isMatch = await bcrypt.compare(password, user.passwordHash);
+    if (!isMatch)
+      return res.status(401).json({ message: "Şifre hatalı." });
+
+    // userId olarak imzala
+    const token = generateToken(user.id);
+
+    res.json({
+      token,
+      user: { id: user.id, username: user.username, email: user.email },
+    });
+  } catch (err) {
+    console.error(err);
+    res
+      .status(500)
+      .json({ message: "Giriş işlemi başarısız.", error: err.message });
+  }
+});
+
+
+module.exports = router;

routes/dealRoutes.js

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+const express = require("express");
+const { PrismaClient } = require("@prisma/client");
+const router = express.Router();
+const prisma = new PrismaClient();
+const authMiddleware = require("../middleware/authMiddleware");
+
+
+router.get("/", async (req, res) => {
+  const deals = await prisma.deal.findMany({ include: { user: true } });
+  res.json(deals);
+});
+
+router.post("/",authMiddleware,  async (req, res) => {
+  const { title, description, url, imageUrl, price, userId } = req.body;
+  const deal = await prisma.deal.create({
+    data: { title, description, url, imageUrl, price, userId },
+  });
+  res.json(deal);
+});
+
+module.exports = router;

routes/dealVoteRoutes.js

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+const express = require("express");
+const { PrismaClient } = require("@prisma/client");
+const authMiddleware = require("../middleware/authMiddleware");
+
+const router = express.Router();
+const prisma = new PrismaClient();
+
+// Oy verme
+router.post("/", authMiddleware, async (req, res) => {
+      console.log("body:", req.body);
+  console.log("user:", req.user);
+  try {
+    const { dealId, voteType } = req.body;
+    const userId = req.user.userId;
+    if (!dealId || !userId || !voteType)
+      return res.status(400).json({ error: "Eksik veri." });
+
+    const existingVote = await prisma.dealVote.findFirst({
+      where: { dealId, userId },
+    });
+
+    let vote;
+    if (existingVote) {
+      // Aynı kullanıcı aynı ilana yeniden oy verirse güncelle
+      vote = await prisma.dealVote.update({
+        where: { id: existingVote.id },
+        data: { voteType },
+      });
+    } else {
+      vote = await prisma.dealVote.create({
+        data: { dealId, userId, voteType },
+      });
+    }
+
+    // Toplam oy sayısını güncelle
+    const upvotes = await prisma.dealVote.count({
+      where: { dealId, voteType: "UP" },
+    });
+    const downvotes = await prisma.dealVote.count({
+      where: { dealId, voteType: "DOWN" },
+    });
+
+    await prisma.deal.update({
+      where: { id: dealId },
+      data: { score: upvotes - downvotes },
+    });
+
+    res.json({ vote, score: upvotes - downvotes });
+  } catch (err) {
+    console.error(err);
+    res.status(500).json({ error: "Sunucu hatası." });
+  }
+});
+
+// Belirli bir deal için oyları çek
+router.get("/:dealId", async (req, res) => {
+  try {
+    const { dealId } = req.params;
+
+    const upvotes = await prisma.dealVote.count({
+      where: { dealId: parseInt(dealId), voteType: "UP" },
+    });
+    const downvotes = await prisma.dealVote.count({
+      where: { dealId: parseInt(dealId), voteType: "DOWN" },
+    });
+
+    res.json({ upvotes, downvotes, score: upvotes - downvotes });
+  } catch (err) {
+    console.error(err);
+    res.status(500).json({ error: "Sunucu hatası." });
+  }
+});
+module.exports = router;

routes/userRoutes.js

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+const express = require("express");
+const { PrismaClient } = require("@prisma/client");
+const router = express.Router();
+const prisma = new PrismaClient();
+
+router.get("/", async (req, res) => {
+  const users = await prisma.user.findMany();
+  res.json(users);
+});
+
+module.exports = router;

server.js

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+const express = require("express");
+const cors = require("cors");
+require("dotenv").config();
+
+const userRoutes = require("./routes/userRoutes");
+const dealRoutes = require("./routes/dealRoutes");
+const authRoutes = require("./routes/authRoutes");
+const dealVoteRoutes = require("./routes/dealVoteRoutes");
+
+const app = express();
+
+app.use(cors());
+app.use(express.json());
+
+app.use("/api/users", userRoutes);
+app.use("/api/deals", dealRoutes);
+app.use("/api/auth", authRoutes);
+app.use("/api/deal-votes", dealVoteRoutes);
+
+app.listen(3000, () => console.log("Server running on http://localhost:3000"));

utils/generateToken.js

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+const jwt = require("jsonwebtoken");
+
+function generateToken(userId) {
+  return jwt.sign({ userId }, process.env.JWT_SECRET || "secretkey", {
+    expiresIn: "7d",
+  });
+}
+
+module.exports = generateToken;