<?php

class chapter extends _publication {
    
    protected $type = 8;
    private $book_title = "";
    private $id_book = 0;
    private $book_authors = "";


    public function setBookTitle($title) {
        $this->book_title = $title;
    }
    
    public function setBookAuthors($authors) {
        $this->book_authors = $authors;
    }    
    // each type has its own master record
    // THIS ONLY ADDS article (master of publication)
    protected function _addMaster() {
        
        
        // first process book p_Book: book_title, book_authors, publisher, city
        // then book authors dict_book_author: id_book,. id_author, order [those are here]
        // then chapter  p_bookchapter: ID_BOOK, FROM_PAGE, TO_PAGE


        if (!$this->_isPublisher()) {
            $this->_addPublisher();
        }

        if (!$this->_isMasterBook()) {
            $this->_addMasterBook();
        }
        
        if ($this->id_book > 0) {
            $this->_linkBookAuthors();

            try {
                $stmt = $this->PDO->prepare("REPLACE INTO p_bookChapter (id_book, fromPage, toPage) VALUES (:id_book, :fromPage, :toPage)");
                $stmt->execute(array(
                    'id_book' => $this->id_book,
                    'fromPage' => $this->fromPage,
                    'toPage' => $this->toPage));

                return $this->PDO->lastInsertId();
            }
            catch (exception $ex) {
               common::except ('Err: ' .$ex .' in ' .__DIR__ .'/' .__FILE__ .':' .__LINE__);
               echo "FromPage: " .$this->fromPage .", topage: " .$this->toPage ."\n";
               return false;
            }
            
            
        }
        
        else {
            common::except ('Couldnt get book id (for chapter)- in ' .__DIR__ .'/' .__FILE__ .':' .__LINE__);
            return false;
        }
        
       
    }
    
    
    // links authors to publications
    protected function _linkBookAuthors() {
        // link authors from array in $this->authors
        foreach ($this->book_authors as $offset=>$author) {
            try {
                $stmt = $this->PDO->prepare("REPLACE INTO dict_book_author (id_author, id_book, `order`) VALUES (:author, :pub, :ord)");
                $stmt->execute(array(
                    'author' => author::isAuthor($author), // convert citation into ID!
                    'pub' => $this->id,
                    'ord' => ($offset+1)));
           }
           catch (exception $ex) {
              common::except ('Err: ' .$ex .' in ' .__DIR__ .'/' .__FILE__ .':' .__LINE__);
              return false;
           }  
        }

    }
       
    
    private function _isMasterBook () {
        try {
            $stmt = $this->PDO->prepare("SELECT id FROM p_book where title = :book_title AND chapter=1 AND city=:city AND id_publisher=:id_publisher");
            $stmt->execute(array('book_title' => $this->book_title, 'city' => $this->city, 'id_publisher' => $this->publisher_id));
            
            // this instead of rowCount to make in compatible with non-mysql DB
            if ($r = $stmt->fetch(PDO::FETCH_NUM)) {
                $this->id_book = $r[0];
                return true;
            }
            return false;

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

    }
    
    private function _addMasterBook() {
        try {
            $stmt = $this->PDO->prepare("INSERT INTO p_book (title, id_publisher, city, chapter) VALUES (:title, :id_publisher, :city, 1)");
            
            $stmt->execute(array(
                'title' => $this->book_title,
                'id_publisher' => $this->publisher_id,
                'city' => $this->city));
            
            $this->id_book = $this->PDO->lastInsertId();
            return true;
       }
       catch (exception $ex) {
          common::except ('Err: ' .$ex .' in ' .__DIR__ .'/' .__FILE__ .':' .__LINE__);
       }  
        
    }
    
}