import { PrismaClient } from '@prisma/client';
import { hashPassword } from '../utils/password';

const prisma = new PrismaClient();

export default defineEventHandler(async (event) => {
  const body = await readBody(event);
  const { email, password, nickname } = body;

  // 1. Validate input
  if (!email || !password) {
    throw createError({
      statusCode: 400,
      statusMessage: 'Email and password are required',
    });
  }
  if (password.length < 8) {
    throw createError({
        statusCode: 400,
        statusMessage: 'Password must be at least 8 characters long',
    });
  }


  // 2. Check if user already exists
  const existingUser = await prisma.user.findUnique({
    where: { email },
  });

  if (existingUser) {
    throw createError({
      statusCode: 409, // Conflict
      statusMessage: 'Email already in use',
    });
  }

  // 3. Hash password and create user
  const hashedPassword = await hashPassword(password);
  const user = await prisma.user.create({
    data: {
      email,
      password: hashedPassword,
      nickname: nickname || 'New Smurf',
    },
  });

  // 4. Return the new user, excluding the password
  const { password: _password, ...userWithoutPassword } = user;
  return { user: userWithoutPassword };
});