import { NextResponse } from "next/server";
import { z } from "zod";
import { registerUser } from "@/lib/service/auth";
import { AppError } from "@/lib/common/errors";

const registerSchema = z.object({
  email: z.string().email(),
  password: z.string().min(8),
  name: z.string().optional(),
});

export async function POST(req: Request) {
  let body: unknown;
  try {
    body = await req.json();
  } catch {
    return NextResponse.json({ error: "invalid json" }, { status: 400 });
  }

  const parsed = registerSchema.safeParse(body);
  if (!parsed.success) {
    return NextResponse.json(
      { error: "invalid input", details: parsed.error.flatten() },
      { status: 400 },
    );
  }

  try {
    const user = await registerUser(parsed.data);
    return NextResponse.json({ id: user.id, email: user.email }, { status: 201 });
  } catch (e) {
    if (e instanceof AppError) {
      return NextResponse.json({ error: e.message }, { status: e.statusCode });
    }
    return NextResponse.json({ error: "internal error" }, { status: 500 });
  }
}