import { NextResponse } from "next/server";
import { getCollection } from "@/lib/mongodb";
import bcrypt from "bcryptjs";

export async function POST(request: Request) {
  try {
    const body = await request.json();
    const { name, email, password, phone } = body;

    // Validation
    if (!name || !email || !password) {
      return NextResponse.json(
        { error: "Name, email, and password are required" },
        { status: 400 }
      );
    }

    if (password.length < 6) {
      return NextResponse.json(
        { error: "Password must be at least 6 characters" },
        { status: 400 }
      );
    }

    const usersCollection = await getCollection("users");

    // Check if user already exists
    const existingUser = await usersCollection.findOne({ email });
    if (existingUser) {
      return NextResponse.json(
        { error: "User with this email already exists" },
        { status: 400 }
      );
    }

    // Hash password
    const hashedPassword = await bcrypt.hash(password, 10);

    // Create user
    const userData = {
      name,
      email,
      password: hashedPassword,
      phone: phone || "",
      role: "customer",
      address: {},
      preferences: {
        newsletter: false,
        currency: "AED",
        language: "en",
      },
      createdAt: new Date(),
      updatedAt: new Date(),
    };

    const result = await usersCollection.insertOne(userData);

    return NextResponse.json({
      success: true,
      message: "User registered successfully",
      user: {
        _id: result.insertedId.toString(),
        name,
        email,
        phone,
        role: "customer",
      },
    });
  } catch (error) {
    console.error("Error registering user:", error);
    return NextResponse.json(
      { error: "Failed to register user" },
      { status: 500 }
    );
  }
}