import { NextRequest, NextResponse } from 'next/server';
import { getDatabase } from '@/lib/db';

export async function PATCH(
  request: NextRequest,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    const { id } = await params;
    const purchaseId = parseInt(id);

    if (isNaN(purchaseId)) {
      return NextResponse.json(
        { error: 'Invalid purchase ID' },
        { status: 400 }
      );
    }

    const db = getDatabase();

    // Update purchase status to rejected
    const result = db.prepare(`
      UPDATE purchases
      SET approvalStatus = 'rejected'
      WHERE id = ?
    `).run(purchaseId);

    if (result.changes === 0) {
      return NextResponse.json(
        { error: 'Purchase not found' },
        { status: 404 }
      );
    }

    return NextResponse.json({
      success: true,
      message: 'Purchase rejected successfully'
    });
  } catch (error: any) {
    console.error('Error rejecting purchase:', error);
    return NextResponse.json(
      { error: error.message || 'Failed to reject purchase' },
      { status: 500 }
    );
  }
}