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<?php
class BooksController extends AppController {

	var $name = 'Books';
	var $helpers = array('Html', 'Form','Chief','Javascript');

    /**
     * index
     */
	function index() {
		$this->Book->recursive =2;
		$this->set('books', $this->paginate());
	}

    /**
     * view
     *
     * @param int $id Id of the Book
     */
	function view($id = null) {
		if (!$id) {
			$this->Session->setFlash(__('Invalid Book.', true));
			$this->redirect(array('action'=>'index'));
		}
		$this->set('book', $this->Book->read(null, $id));
	}

    /**
     * add
     */
	function add() {

		if (!empty($this->data)) {
			$this->Book->create();
            $this->Book->trace($this->Auth->user('id'));
            $this->Book->PublishPlace->create();
            $this->Book->PublishPlace->trace($this->Auth->user('id'));
            $this->Book->MaterialType->create();
            $this->Book->MaterialType->trace($this->Auth->user('id'));
            
			if ($this->Book->save($this->data)) {
				$this->Session->setFlash(__('The Book has been saved', true));
				$this->redirect(array('action'=>'index'));
			} else {
				$this->Session->setFlash(__('The Book could not be saved. Please, try again.', true));
			}
		}
		$authors = $this->Book->Author->find('list');
		$disciplines = $this->Book->Discipline->find('list');
		$languages = $this->Book->Language->find('list');
		$subjectHeadings = $this->Book->SubjectHeading->find('list');
		$publishers = $this->Book->Publisher->find('list');
		$publishPlaces = $this->Book->PublishPlace->find('list');
		$sections = $this->Book->Section->find('list');
		$materialTypes = $this->Book->MaterialType->find('list');
		$editions = $this->Book->Edition->find('list');
		$encoders = $this->Book->Encoder->find('list');
		$editors = $this->Book->Editor->find('list');
		$this->set(compact('authors', 'disciplines', 'languages', 'subjectHeadings', 'publishers', 'publishPlaces', 'sections', 'materialTypes', 'editions', 'encoders', 'editors'));
	}

    /**
     * edit
     *
     * @param int $id Id of the Book
     */
	function edit($id = null) {
		if (!$id && empty($this->data)) {
			$this->Session->setFlash(__('Invalid Book', true));
			$this->redirect(array('action'=>'index'));
		}
		if (!empty($this->data)) {
            $this->Book->trace($this->Auth->user('id'));
			if ($this->Book->save($this->data)) {
				$this->Session->setFlash(__('The Book has been saved', true));
				$this->redirect(array('action'=>'index'));
			} else {
				$this->Session->setFlash(__('The Book could not be saved. Please, try again.', true));
			}
		}
		if (empty($this->data)) {
			$this->data = $this->Book->read(null, $id);
		}
		$authors = $this->Book->Author->find('list');
		$disciplines = $this->Book->Discipline->find('list');
		$languages = $this->Book->Language->find('list');
		$subjectHeadings = $this->Book->SubjectHeading->find('list');
		$publishers = $this->Book->Publisher->find('list');
		$publishPlaces = $this->Book->PublishPlace->find('list');
		$sections = $this->Book->Section->find('list');
		$materialTypes = $this->Book->MaterialType->find('list');
		$editions = $this->Book->Edition->find('list');
		$encoders = $this->Book->Encoder->find('list');
		$editors = $this->Book->Editor->find('list');
		$this->set(compact('authors','disciplines','languages','subjectHeadings','publishers','publishPlaces','sections','materialTypes','editions','encoders','editors'));
	}

    /**
     * delete
     *
     * @param int $id Id of the Book
     */
	function delete($id = null) {
		if (!$id) {
			$this->Session->setFlash(__('Invalid id for Book', true));
			$this->redirect(array('action'=>'index'));
		}
		if ($this->Book->del($id)) {
			$this->Session->setFlash(__('Book deleted', true));
			$this->redirect(array('action'=>'index'));
		}
	}

    /**
     * ajax_open_library_isbn
     */
    function ajax_open_library_isbn() {
        $this->layout = 'ajax';
        $book = null;
        $authors = null;

        $isbn = $this->params['form']['isbn'];

        $ol_images = array();
        $lt_images = array();

        $ol_sizes = array('S','M','L');
        $lt_sizes = array('small','medium','large');
        
        $ol_image_write_error = array();
        $lt_image_write_error = array();
        // try getting the image
        foreach($ol_sizes as $ol_size){
            $ol_string = 'http://covers.openlibrary.org/b/isbn/'.$isbn.'-'.$ol_size.'.jpg';
            $ol_images[$ol_size] = file_get_contents($ol_string);
        }

        foreach($lt_sizes as $lt_size){
            $devkey = 'eea965edcef313bb468597d22e120b56';
            $lt_string = 'http://covers.librarything.com/devkey/'.$devkey.'/'.$lt_size.'/isbn/'.$isbn;
            $lt_images[$lt_size] = file_get_contents($lt_string);
            sleep(1); // As per Terms and Conditions, we need to fetch every second only.
        }
        
            if (!$ol_images['M']) {
                $this->set('ol_img_read_error', 'No image available.');
            } else {
                // try writing the file with the original filename -- note that this will overwrite any existing filename in the same directory -- that's up to you to check for
                foreach ($ol_sizes as $ol_size) {
                    $ol_filename = WWW_ROOT.'img/isbn/openlibrary/'.$isbn.'-'.$ol_size.'.jpg';
                    $ol_current_image = $ol_images[$ol_size];
                    if (!file_put_contents($ol_filename, $ol_current_image)) {
                        $ol_image_write_error[] = $ol_size;
                    }
                }
            }
        
        $this->set('img_write_error',$ol_image_write_error);

        if (!$lt_images['small']) {
            $this->set('lt_img_read_error', 'No image available.');
        } else {
            // try writing the file with the original filename -- note that this will overwrite any existing filename in the same directory -- that's up to you to check for
            foreach ($lt_sizes as $lt_size){
                $lt_filename = WWW_ROOT.'img/isbn/librarything/'.$isbn.'-'.$lt_size.'.jpg';
                $lt_current_image = $lt_images[$lt_size];
                if (!file_put_contents($lt_filename, $lt_current_image)) {
                    $lt_image_write_error[] = $lt_size;
                }
            }
        }
        $this->set('img_write_error',$ol_image_write_error);
        
        if ($this->OpenLibrary->isbn($isbn)) {
            foreach($this->OpenLibrary->isbn($isbn) as $key) {
                $key_request = $this->OpenLibrary->key($key);
                $output = print_r($key_request, true).">>\n";
                foreach($key_request['authors'] as $_author){
                    $author = $this->OpenLibrary->author($_author['key']);
                    $authors[] = $author['name'];
                }
            }
            $book = $key_request;
        } else {
            $output = 'No results found.';
        }
        $this->set(compact('output','book','authors'));
     }
}
?>