const pagination = _req.getValues('pagination');
const filter = _req.getValues('filter');

const pageSize = 5;
const page = {start:0,size:pageSize};

if (pagination != null) {
  page.size = pagination.getInt('pageSize', pageSize);
  page.start = (pagination.getInt('current', 1) - 1 ) * page.size;
}
if (page.size > 100) {
  page.size = 100;
}

let queryWhere = '';
const queryFilter = _val.list();

if (filter != null) {
  if (filter.getString('nome') != null) {
    queryWhere += ` AND cliente.nome LIKE ?`;
    queryFilter.add(`%${ filter.getString('nome') }%`);
  }
}

const dbClientes = _db.query(`
  SELECT 
    cliente.nome AS cliente_nome, cliente.email, cliente.uid, pais.nome AS pais_nome
  FROM cliente
  INNER JOIN pais ON pais.uid = cliente.pais_uid
  WHERE 1 = 1
  ${queryWhere}
  ORDER BY cliente.id
  LIMIT ${page.size} OFFSET ${page.start}
`,queryFilter);

const clientes = _val.list();

for (const dbCliente of dbClientes) {
  clientes.add(
    _val.map()
      .set("nome", dbCliente.getString("cliente_nome"))
      .set("email", dbCliente.getString("email"))
      .set("uid", dbCliente.getString("uid"))
      .set("pais", 
        _val.map()
          .set("nome",dbCliente.getString('pais_nome'))
      )
  )
};

_out.json(
  _val.map()
  .set("result", clientes)
  .set("total",
      _db.queryFirst(`
        SELECT COUNT(1) AS total 
        FROM cliente
        WHERE 1 = 1
        ${queryWhere}`,queryFilter).getInt('total')
    )
)