<?php

class conferencePP extends _publication {
    
    protected $type = 4;
    private $conference_name = "";
    private $conference_city = "";
    private $conference_start = NULL;
    private $conference_end = NULL;
    private $id_conference = 0;
    

    public function setConferenceName ($name) {
        $this->conference_name = $this->_cleanField($name);
    }
    
    public function setConferenceCity ($city) {
        $this->conference_city = $this->_cleanField($city);
    }

    // it should be double-master (publication->p_conferencePP->conference
    // but we only get that data from DOI as we don't have standard form
    protected function _addMaster() {
        
        if (!$this->_isConference()) {
            $this->_addConference();
        }
            
        
        try {
            // citation is not standardized, so we cannot get details.
            // just insert it to get ID
            $stmt = $this->PDO->prepare("INSERT INTO p_conferencePP (type, id_conference) VALUES ('paper', :id_conference)");
            
            $stmt->execute(array('id_conference'=>$this->id_conference));
            
            $master_id = $this->PDO->lastInsertId();
            
            return $master_id;
       }
       catch (exception $ex) {
          common::except ('Err: ' .$ex .' in ' .__DIR__ .'/' .__FILE__ .':' .__LINE__);
       }  
       return false;
       
    }
    
    
    private function _isConference() {
        try {
            
            $check_array = array ('conference_name' => $this->conference_name,
                'location'=> $this->conference_city);
            
            $check_start = "startDate IS NULL";
            if ($this->conference_start != '') {
                $check_start = "startDate=:startDate";
                $check_array['startDate'] = $this->conference_start;
            }
            
            $check_end = "endDate IS NULL";
            if ($this->conference_end != '') {
                $check_end = "endDate=:endDate";
                $check_array['endDate'] = $this->conference_end;
            }
            
            $stmt = $this->PDO->prepare("SELECT id FROM l_conference where name = :conference_name AND location=:location and " .$check_start ." AND " .$check_end);
            $stmt->execute($check_array);
            
            // this instead of rowCount to make in compatible with non-mysql DB
            if ($r = $stmt->fetch(PDO::FETCH_NUM)) {
                $this->id_conference = $r[0];
                return true;
            }
            return false;

        }
        catch (exception $ex) {
            common::except ('Err: ' .$ex .' in ' .__DIR__ .'/' .__FILE__ .':' .__LINE__);
            return false;
        }  

    }
    
    private function _addConference() {
        try {
            
            
            $stmt = $this->PDO->prepare("INSERT INTO l_conference (name, location, startDate, endDate) VALUES (:name, :location, :startDate, :endDate)");
            
            $stmt->execute(array(
                'name' => $this->conference_name,
                'location' => $this->conference_city,
                'startDate' => $this->conference_start,
                'endDate' => $this->conference_end,
            ));
            
            $this->id_conference = $this->PDO->lastInsertId();
            return true;
       }
       catch (exception $ex) {
          common::except ('Err: ' .$ex .' in ' .__DIR__ .'/' .__FILE__ .':' .__LINE__);
       }  
        
    }
    

}