fullstack-developer

// app/api/users/route.ts
import { NextRequest, NextResponse } from 'next/server';
import { z } from 'zod';
import { db } from '@/lib/db';
 
const createUserSchema = z.object({
  email: z.string().email(),
  name: z.string().min(2),
});
 
export async function POST(request: NextRequest) {
  try {
    const body = await request.json();
    const data = createUserSchema.parse(body);
    
    const user = await db.user.create({
      data: {
        email: data.email,
        name: data.name,
      },
    });
    
    return NextResponse.json(user, { status: 201 });
  } catch (error) {
    if (error instanceof z.ZodError) {
      return NextResponse.json(
        { error: 'Invalid input', details: error.errors },
        { status: 400 }
      );
    }
    
    return NextResponse.json(
      { error: 'Internal server error' },
      { status: 500 }
    );
  }
}

// components/UserProfile.tsx
'use client';
 
import { useQuery } from '@tanstack/react-query';
import { useState } from 'react';
 
interface User {
  id: string;
  name: string;
  email: string;
}
 
export function UserProfile({ userId }: { userId: string }) {
  const { data: user, isLoading, error } = useQuery({
    queryKey: ['user', userId],
    queryFn: () => fetch(`/api/users/${userId}`).then(r => r.json()),
  });
  
  if (isLoading) return <div>Loading...</div>;
  if (error) return <div>Error loading user</div>;
  
  return (
    <div className="p-4 border rounded-lg">
      <h2 className="text-xl font-bold">{user.name}</h2>
      <p className="text-gray-600">{user.email}</p>
    </div>
  );
}

// lib/db.ts
import { PrismaClient } from '@prisma/client';
 
export const db = new PrismaClient();

// app/api/posts/route.ts
import { NextRequest, NextResponse } from 'next/server';
import { z } from 'zod';
import { db } from '@/lib/db';
 
const createPostSchema = z.object({
  title: z.string().min(1).max(200),
  content: z.string().min(1),
  authorId: z.string(),
});
 
export async function GET() {
  const posts = await db.post.findMany({
    include: { author: true },
    orderBy: { createdAt: 'desc' },
  });
  
  return NextResponse.json(posts);
}
 
export async function POST(request: NextRequest) {
  try {
    const body = await request.json();
    const data = createPostSchema.parse(body);
    
    const post = await db.post.create({
      data,
      include: { author: true },
    });
    
    return NextResponse.json(post, { status: 201 });
  } catch (error) {
    if (error instanceof z.ZodError) {
      return NextResponse.json(
        { error: 'Invalid input', details: error.errors },
        { status: 400 }
      );
    }
    
    return NextResponse.json(
      { error: 'Failed to create post' },
      { status: 500 }
    );
  }
}

npm install @prisma/client zod
npm install -D prisma

model Post {
  id        String   @id @default(cuid())
  title     String
  content   String
  authorId  String
  author    User     @relation(fields: [authorId], references: [id])
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
}

# Initialize Prisma
npx prisma init
 
# Run migrations
npx prisma migrate dev --name init
 
# Generate Prisma client
npx prisma generate