<?
  class alert {

    var $alert, $fields, $query_order, $num_records, $records_view, $config;

    function alert() {

      global $CONF, $EXERCISE, $LNG;

      $this->config        = &$CONF;
      $this->exercise      = &$EXERCISE;
      $this->lng           = &$LNG;
      $this->fields        = array( '1' => 'a.id',
                                    '2' => 'a.id_grupo',
                                    '3' => 'a.fecha',
                                    '4' => 'a.estado',
                                    '5' => 'a.descripcion');

      $this->query_order   = array( 'a' => 'ASC',
                                    'd' => 'DESC' );

      $this->records_view  = array('order'   => array('1','3','4','5'),
                                   'width'   => array('25', '90', '90', '300'),
                                   'orderby' => array(true, true, true, false) );
    }

    //-----------------------------------------------------------------------------------
    // getRecordList
    // Obtiene un listado de registros de la BBDD.

    function getRecordList(&$page, $order_field = 3, $order_type = 'a', $SQL_records_filter = '' ) {

      $records_list = array();

      if ( !isset( $this->fields[$order_field] ) )     $order_field = 3;
      if ( !isset( $this->query_order[$order_type] ) ) $order_type  = 'a';

      $SQL_records_query = db_query('SELECT COUNT(*) AS total FROM alertas a' . $SQL_records_filter);
      $SQL_records       = db_fetch_array($SQL_records_query);

      if ( $SQL_records['total'] > 0 ) {

        $page              = check_records_page($page, $SQL_records['total']);
        $this->num_records = $SQL_records['total'];
        $SQL_records_order = ' ORDER BY ' . $this->fields[$order_field] . ' ' . $this->query_order[$order_type];
        $SQL_records_limit = ' LIMIT ' . ( ( $page - 1 ) * $this->config['max_num_regs_list'] ) . ', ' . $this->config['max_num_regs_list'];

        $SQL_query         = db_query('SELECT a.id, a.id_grupo, DATE_FORMAT(a.fecha, "%d/%m/%Y") AS fecha, a.estado, a.descripcion, ( TO_DAYS(a.fecha) - TO_DAYS(CURDATE()) ) AS dias FROM alertas a' . $SQL_records_filter . $SQL_records_order . $SQL_records_limit);

        while ( $SQL_record = db_fetch_array($SQL_query) ) {

          $records_list[$SQL_record['id']]['1'] = $SQL_record['id'];
          $records_list[$SQL_record['id']]['2'] = $SQL_record['id_grupo'];
          $records_list[$SQL_record['id']]['3'] = $SQL_record['fecha'];
          $records_list[$SQL_record['id']]['4'] = $this->lng['form_status_' . $SQL_record['estado']];
          $records_list[$SQL_record['id']]['5'] = stripslashes($SQL_record['descripcion']);
          $records_list[$SQL_record['id']]['6'] = $SQL_record['dias'];
          $records_list[$SQL_record['id']]['7'] = $SQL_record['estado'];
        }
      }

      return $records_list;
    }

    //-----------------------------------------------------------------------------------
    // generateFilterQuery

    function generateFilterQuery( $filter_field = '', $filter_values = '', $exactSearch = false ) {

      $filterQuery   = ' WHERE 1';

      if ( is_array($filter_values) ) {
        if ( count($filter_values) > 0 ) {
          while ( list($id) = each($filter_values) ) {

            $filter_values[$id] = ( $exactSearch ? addslashes($filter_values[$id]) : '%' . addslashes($filter_values[$id]) . '%' );

            if ( isset( $this->fields[$id]) && trim($filter_values[$id]) != '' ) $filterQuery .= ' AND ' . $this->fields[$id] . ' LIKE \'' . $filter_values[$id] . '\'';
          }
        }
      }
      elseif ( trim($filter_values) != '' && isset( $this->fields[$filter_field] ) ) {
        $filter_values = ( $exactSearch ? '\'' . addslashes($filter_values) . '\'' : '\'%' . addslashes($filter_values) . '%\'' );
        $filterQuery  .= ' AND ' . $this->fields[$filter_field] . ' LIKE ' . $filter_values;
      }

      return $filterQuery;
    }

    //-----------------------------------------------------------------------------------
    // deleteRecord
    // Elimina un registro de la BBDD.

    function deleteRecord($record) {

      if ( $this->checkRecord($record) ) {
        if ( db_query('DELETE FROM alertas WHERE id = \'' . $record . '\'') ) return '0';
        else return '2';
      }
      else return '1';
    }

    //-----------------------------------------------------------------------------------
    // checkRecord
    // Comprueba si existe o no un registro

    function checkRecord(&$record) {

      settype($record, "integer");

      $SQL_check_record = db_query('SELECT count(*) AS total FROM alertas WHERE id = \'' . $record . '\'');
      $SQL_num_records  = db_fetch_array($SQL_check_record);

      if ( $SQL_num_records['total'] == 1 ) return true;
      else return false;
    }

    //-----------------------------------------------------------------------------------
    // getRecordValues
    // Obtiene los valores para el registro indicado.

    function getRecordValues($record) {

      if ( $this->checkRecord($record) ) {

        $SQL_check_record = db_query('SELECT a.id, a.id_grupo AS group_id, DATE_FORMAT(a.fecha, "%d/%m/%Y") AS alert_date, a.estado AS alert_status, a.descripcion AS alert_description FROM alertas a WHERE a.id = \'' . $record . '\'');

        if ( db_num_rows($SQL_check_record) == 1 ) {

          $SQL_values = db_fetch_array($SQL_check_record);

          return $SQL_values;
        }
        else return false;
      }
      else return false;
    }

    //-----------------------------------------------------------------------------------
    // manageRecord
    // - Recibe los parametros enviados desde el formulario mediante metodo POST.
    // - Determina el tipo de accion a realizar (INSERT o UPDATE).
    // - Trata los valores recibidos.
    // - Genera un codigo de error correspondiente a las acciones realizadas.
    //
    //     [1] > Tipo de accion
    //     [2] > Campo nombre
    //     [3] > Campo Fecha Inicio
    //     [4] > Campo Fecha Fin
    //     [5] > Campo Nivel
    //     [6] > Chequeo antes de realizar una accion sobre la BBDD
    //     [7] > Resultado de la accion sobre la BBDD.

    function manageRecord(&$params) {

      $action = '';
      $error  = '';

      // Chequeo y tratamiento de los valores recibidos

      if ( isset($params['record_id']) ) {
        if ( ereg("^[0-9]+$", $params['record_id'] ) && $params['record_id'] > 0 ) { if ( $this->checkRecord($params['record_id']) ) $action = 'update'; }
      }
      else $action = 'insert';

      if ( ereg("^([0-9]{1,2})\/([0-9]{1,2})\/([0-9]{4})$", $params['alert_date'], $date ) && checkdate($date[2], $date[1], $date[3]) ) $alert_date = mktime(0,0,0,$date[2],$date[1],$date[3]);

      // Generacion del codigo de error

      $error .= ( $action == '' ? 1 : 0 );
      $error .= ( empty($params['alert_description']) ? 1 : 0  );
      $error .= ( !$alert_date ? 1 : 0 );

      // Acciones sobre la BBDD

      if ( ereg("^0+$", $error) ) {

        format_record($params);

        if ( $action == 'insert' ) {

          if ( db_query('INSERT INTO alertas (id_grupo, fecha, estado, descripcion) VALUES (\'' . $params['group_id'] . '\', \'' . date('Y-m-d', $alert_date) . '\', \'' . $params['alert_status'] . '\', \'' . $params['alert_description'] . '\')' ) ) { $params['record_id'] = db_insert_id(); $error .= 0; }
          else $error .= 1;
        }
        elseif ( $action == 'update' ) {
          if ( db_query('UPDATE alertas SET id_grupo = \'' . $params['group_id'] . '\', fecha = "' . date('Y-m-d', $alert_date) . '", estado = \'' . $params['alert_status'] . '\', descripcion = \'' . $params['alert_description'] . '\' WHERE id = \'' . $params['record_id'] . '\'') ) $error .= 0;
          else $error .= 1;
        }
      }

      strip_slashes($params);
      return $error;
    }
  }
?>