<?php

class FCCDatabase extends Model
{
  public function __construct($id)
  {
    parent::__construct($id);
  }


  /**
   * Get the call sign of the station
   *
   * @return string (Call sign of the licensee)
   */
  public function getCallSign()
  {
    return trim($this->callSign);
  }


  /**
   * Get the license class from the FCC file for the station
   *
   * @param boolean $getPrevious (fetch previous license class)
   * @return array (false on no records found)
   */
  public function getLicenseClass($getPrevious=false)
  {
    $getClass = $getPrevious ? $this->previousOperatorClass : $this->operatorClass;

    switch ($getClass)
    {
      case 'A':
        return 'Advanced';
      case 'E':
        return 'Extra';
      case 'G':
        return 'General';
      case 'N':
        return 'Novice';
      case 'P':
        return 'Technician Plus';
      case 'T':
        return 'Technician';
      default:
        return 'Unknown';
    }
  }


  /**
   * Stub function to get the previous license class from the FCC file for the station
   *
   * @return array (false on no records found)
   */
  public function getPreviousLicenseClass()
  {
    return $this->getLicenseClass(true);
  }


  /**
   * Get the license status from the FCC file for the station
   *
   * @return array (false on no records found)
   */
  public function getLicenseStatus()
  {
    switch ($this->licenseStatus)
    {
      case 'A':
        return 'Active';
      case 'E':
        return 'Expired';
      case 'C':
        return 'Cancelled';
      case 'T':
        return 'Terminated';
      default:
        return 'Unknown';
    }
  }


  /**
   * Get the license status from the FCC file for the station
   *
   * @return boolean (true if vanity call else false)
   */
  public function isVanity()
  {
    return $this->radioServiceCode == 'HV' ? true : false;
  }


  /**
   * Get all of the license modification history for the station
   *
   * @return array (history objects)
   */
  public function getLicenseHistory()
  {
      $pdo = PDOConnection::getInstance();

      $sql = 'SELECT * FROM fcc_co WHERE unique_system_identifier = ?';
      $stmt = $pdo->prepareAndExec($sql, [$this->uniqueSystemIdentifier]);
      return $stmt->fetchAll(PDO::FETCH_OBJ);
  }

  /**
   * Get all of the license attachment history for the station
   *
   * @return array (license attachment objects)
   */
  public function getLicenseAttachments()
  {
      $pdo = PDOConnection::getInstance();

      $sql = 'SELECT * FROM fcc_la WHERE unique_system_identifier = ?';
      $stmt = $pdo->prepareAndExec($sql, [$this->uniqueSystemIdentifier]);
      return $stmt->fetchAll(PDO::FETCH_OBJ);
  }

  /**
   * Get the license status from the FCC file for the station
   *
   * @return boolean (true if vanity call else false)
   */
  public function isClub()
  {
    return $this->trusteeName != null ? true : false;
  }
}
?>