// ========== STATISTIKA ZA ODREĐENOG AGENTA (admin) ==========
if (path === '/api/agent-stats' && method === 'GET') {
  const auth = verifyToken(request.headers.get('Authorization'));
  if (!auth || auth.role !== 'admin') {
    return new Response(JSON.stringify({ error: 'Nemate dozvolu' }), { status: 403, headers });
  }
  
  try {
    const agentId = url.searchParams.get('agent_id');
    const month = url.searchParams.get('month') || `${new Date().getFullYear()}-${String(new Date().getMonth() + 1).padStart(2, '0')}`;
    
    if (!agentId) {
      return new Response(JSON.stringify({ error: 'agent_id je obavezan' }), { status: 400, headers });
    }
    
    const { results } = await env.DB.prepare(
      `SELECT COUNT(*) as count, COALESCE(SUM(final_price), 0) as total_value
       FROM sales
       WHERE agent_id = ? AND month_year = ? AND (status = 'dostavljeno' OR status = 'placeno_karticno')`
    ).bind(agentId, month).all();
    
    const count = results[0]?.count || 0;
    const totalValue = results[0]?.total_value || 0;
    
    let percent = 0;
    if (count >= 1 && count <= 9) percent = 25;
    else if (count >= 10 && count <= 19) percent = 30;
    else if (count >= 20) percent = 35;
    
    let bonus = 0;
    if (count >= 40 && count <= 49) bonus = 500;
    else if (count >= 50) bonus = 1000;
    
    const commission = (totalValue * percent / 100) + bonus;
    
    return new Response(JSON.stringify({
      sales_count: count,
      total_value: totalValue,
      commission_percent: percent,
      bonus: bonus,
      total_commission: commission
    }), { headers });
  } catch (error) {
    return new Response(JSON.stringify({ error: error.message }), { status: 500, headers });
  }
}