import { NextRequest, NextResponse } from 'next/server';
import { cookies } from 'next/headers';

const API_BASE_URL = process.env.API_BASE_URL || process.env.NEXT_PUBLIC_API_BASE_URL;

async function getAuthHeader() {
  const token = cookies().get('session_token')?.value;
  if (!token) throw new Error('Unauthorized');
  return { Authorization: `Bearer ${token}` };
}

export async function GET(
  request: NextRequest,
  { params }: { params: { id: string } }
) {
  try {
    const headers = await getAuthHeader();

    const res = await fetch(
      `${API_BASE_URL}/api/v1/admin/merchants/${params.id}`,
      { headers }
    );

    if (!res.ok) {
      return NextResponse.json(
        { error: await res.text() },
        { status: res.status }
      );
    }

    return NextResponse.json(await res.json());
  } catch (err: any) {
    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
  }
}

export async function PUT(
  request: NextRequest,
  { params }: { params: { id: string } }
) {
  try {
    const headers = await getAuthHeader();
    const body = await request.json();

    const res = await fetch(
      `${API_BASE_URL}/api/v1/admin/merchants/${params.id}`,
      {
        method: 'PUT',
        headers: { ...headers, 'Content-Type': 'application/json' },
        body: JSON.stringify(body),
      }
    );

    if (!res.ok) {
      return NextResponse.json(
        { error: await res.text() },
        { status: res.status }
      );
    }

    return NextResponse.json(await res.json());
  } catch (err: any) {
    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
  }
}

export async function DELETE(
  request: NextRequest,
  { params }: { params: { id: string } }
) {
  try {
    const headers = await getAuthHeader();

    const res = await fetch(
      `${API_BASE_URL}/api/v1/admin/merchants/${params.id}`,
      { method: 'DELETE', headers }
    );

    if (!res.ok) {
      return NextResponse.json(
        { error: await res.text() },
        { status: res.status }
      );
    }

    return NextResponse.json(await res.json());
  } catch (err: any) {
    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
  }
}
