diff --git a/data.sample.db b/data.sample.db
index 7e0cc5f..7bd6845 100644
Binary files a/data.sample.db and b/data.sample.db differ
diff --git a/packt.php b/packt.php
index fcd492e..8101474 100644
--- a/packt.php
+++ b/packt.php
@@ -15,6 +15,284 @@ $loginData = [
 ];
 
 
+class Packt
+{
+
+
+    private $credentials = [];
+    const BASE_URL = 'https://www.packtpub.com/';
+
+    private $database = null;
+
+    public function __construct($credentials)
+    {
+        $this->credentials = $credentials;
+    }
+
+    /**
+     * @return null|SQLite3
+     */
+    public function getDatabase()
+    {
+        if (!$this->database) {
+            $this->database = new SQLite3('data.db');
+        }
+        return $this->database;
+    }
+
+    public function resolveBookUrl($bookUrl)
+    {
+        return self::BASE_URL . trim(str_replace(self::BASE_URL, '', $bookUrl), '/');
+    }
+
+    public function truncateBookUrl($bookUrl)
+    {
+        return str_replace('https://www.packtpub.com', '', $bookUrl);
+    }
+
+    public function getBookInfo($bookUrl)
+    {
+
+        $bookUrl = resolveBookUrl($bookUrl);
+        $bookData = [];
+        $bookPage = new Document($bookUrl, true);
+        $bookData['datepublished'] = $bookPage->first('.book-top-block-info-authors time[itemprop="datePublished"]::attr(datetime)');
+        $bookData['numberofpages'] = $bookPage->first('span[itemprop="numberOfPages"]::text');
+        $bookData['isbn'] = $bookPage->first('span[itemprop="isbn"]::text');
+        $bookData['reviewCount'] = $bookPage->first('meta[itemprop="reviewCount"]::attr(content)');
+        $bookData['ratingValue'] = $bookPage->first('meta[itemprop="ratingValue"]::attr(content)');
+
+        $bookData['toc'] = [];
+        foreach ($bookPage->find('#book-info-toc.onlyDesktop .book-toc-chapter') as $chapter) {
+            if (!is_null($chapter->first('div[class*="book-toc-chapter-title"]'))) {
+                $tocSection = [];
+                $tocSection['title'] = trim($chapter->first('div[class*="book-toc-chapter-title"]')->text());
+                $tocSection['subchapters'] = $chapter->find('div[class*="book-toc-section-text"]::text');
+                $bookData['toc'][] = $tocSection;
+            }
+        }
+
+        $bookData['description'] = $bookPage->find('div.book-info-bottom-indetail-text[itemprop="description"] p::text');
+        $bookData['willLearn'] = $bookPage->find('div.book-info-will-learn-text li::text');
+
+        $bookData['category'] = $bookPage->first('div[data-product-id="' . $bookData['isbn'] . '"]::attr(data-product-category)');
+
+        $bookData['authors'] = [];
+        foreach ($bookPage->find('[itemprop="author"]') as $author) {
+
+            $authorData = [];
+            $authorData['name'] = trim($author->first('.book-info-bottom-author-title')->text());
+            $authorData['bio'] = preg_replace('#\s{2,}#', ' ', trim($author->first('.book-info-bottom-author-body')->text()));
+            $bookData['authors'][] = $authorData;
+        }
+        return $bookData;
+    }
+
+    public function saveBookChapters($data, $bookId)
+    {
+        $db = $this->getDatabase();
+        foreach ($data['toc'] as $chapterNumber => $chapter) {
+
+            $stmt = $db->prepare('REPLACE INTO chapter (book_id, chapter_number, parent_id, name)
+                                                VALUES  (:book_id, :chapter_number, :parent_id, :name)');
+            $stmt->bindValue(':book_id', $bookId, SQLITE3_INTEGER);
+            $stmt->bindValue(':chapter_number', $chapterNumber + 1, SQLITE3_INTEGER);
+            $stmt->bindValue(':parent_id', null, SQLITE3_INTEGER);
+            $stmt->bindValue(':name', $chapter['title'], SQLITE3_TEXT);
+            $result = $stmt->execute();
+
+            $stmt = $db->prepare('select seq from sqlite_sequence where name="chapter"');
+            $result = $stmt->execute();
+            $lastInsertedId = $result->fetchArray(SQLITE3_ASSOC);
+            $lastInsertedId['seq'];
+
+            if (isset($chapter['subchapters'])) {
+                foreach ($chapter['subchapters'] as $subChapterNumber => $subChapterName) {
+
+                    $stmt = $db->prepare('REPLACE INTO chapter (book_id, chapter_number, parent_id, name)
+                                                VALUES  (:book_id, :chapter_number, :parent_id, :name)');
+                    $stmt->bindValue(':book_id', $bookId, SQLITE3_INTEGER);
+                    $stmt->bindValue(':chapter_number', $subChapterNumber + 1, SQLITE3_INTEGER);
+                    $stmt->bindValue(':parent_id', $lastInsertedId['seq'], SQLITE3_INTEGER);
+                    $stmt->bindValue(':name', $subChapterName, SQLITE3_TEXT);
+                    $result = $stmt->execute();
+                }
+            }
+        }
+
+    }
+
+    public function directoryNameFromPath($filePath)
+    {
+        $filePathParts = explode('/', trim($filePath, '/'));
+        return 'books' . DIRECTORY_SEPARATOR . $filePathParts[1] . DIRECTORY_SEPARATOR;
+    }
+
+    public function downloadBook($url)
+    {
+
+        if (strlen($url) && !file_exists(fileNameFromPath($url))) {
+            $localPath = $this->fileNameFromPath($url);
+            $directory = $this->directoryNameFromPath($url);
+            $fullUrl = $this->resolveBookUrl($url);
+
+            if (!is_dir($directory)) {
+                mkdir($directory, 0777, true);
+            }
+            c($fullUrl, [], $localPath);
+            return 1;
+        }
+        return 0;
+    }
+
+    public function fileNameFromPath($filePath)
+    {
+        $filePathParts = explode('/', trim($filePath, '/'));
+        return 'books' . DIRECTORY_SEPARATOR . $filePathParts[1] . DIRECTORY_SEPARATOR . $filePathParts[1] . '.' . (isset($filePathParts[2]) ? $filePathParts[2] : 'zip');
+    }
+
+    public function getBooks()
+    {
+        //logowanie
+        c('https://www.packtpub.com/', $this->credentials);
+        //pobieranie listy ksiązek
+        $return = c('https://www.packtpub.com/account/my-ebooks');
+        $document = new Document($return);
+
+        $books = $document->find('.product-line.unseen');
+        foreach ($books as $book) {
+            $bookData = [];
+            $bookData['nid'] = (int)$book->attr('nid');
+            $bookData['title'] = str_replace(["\r\n"], '', trim($book->first('.title::text')));
+            $bookData['ebook_isbn'] = $book->first('div[isbn]::attr(isbn)');
+            $bookData['img'] = $book->first('img[class*=imagecache]::attr(src)');
+            $bookData['url'] = $this->truncateBookUrl($book->first('div[class*=product-thumbnail]')->first('a::attr(href)'));
+            $bookData['pdf'] = $this->truncateBookUrl($book->first('a[href$=pdf]::attr(href)'));
+            $bookData['epub'] = $this->truncateBookUrl($book->first('a[href$=epub]::attr(href)'));
+            $bookData['mobi'] = $this->truncateBookUrl($book->first('a[href$=mobi]::attr(href)'));
+            $bookData['code'] = $this->truncateBookUrl($book->first('a[href*=code_download]::attr(href)'));
+            yield $bookData;
+        }
+    }
+
+    /**
+     * @param int $nid
+     * @return bool
+     */
+    public function isBookByNid(int $nid)
+    {
+        $stmt = $this->getDatabase()->prepare('SELECT nid FROM book WHERE nid = :nid');
+        $stmt->bindValue(':nid', $nid, SQLITE3_INTEGER);
+        $result = $stmt->execute();
+        return $result->fetchArray(SQLITE3_ASSOC) === false ? false : true;
+    }
+
+    public function saveBooks()
+    {
+        foreach ($this->getBooks() as $basicBookInfo) {
+            if ($this->isBookByNid($basicBookInfo['nid'])) {
+                $stmt = $this->getDatabase()->prepare('UPDATE book SET nid = :nid, title = :title, ebook_isbn = :ebook_isbn, img = :img, url = :url, pdf = :pdf, epub = :epub, mobi = :mobi, code = :code, upd_dt = (DATETIME(\'now\')) WHERE nid = :nid');
+            } else {
+                $stmt = $this->getDatabase()->prepare('INSERT INTO book (nid, title, isbn, img, url, pdf, epub, mobi, code)
+VALUES  (:nid, :title, :ebook_isbn, :img, :url, :pdf, :epub, :mobi, :code)');
+            }
+            $stmt->bindValue(':nid', $basicBookInfo['nid'], SQLITE3_INTEGER);
+            $stmt->bindValue(':title', $basicBookInfo['title'], SQLITE3_TEXT);
+            $stmt->bindValue(':ebook_isbn', $basicBookInfo['ebook_isbn'], SQLITE3_TEXT);
+            $stmt->bindValue(':img', $basicBookInfo['img'], SQLITE3_TEXT);
+            $stmt->bindValue(':url', $basicBookInfo['url'], SQLITE3_TEXT);
+            $stmt->bindValue(':pdf', $basicBookInfo['pdf'], SQLITE3_TEXT);
+            $stmt->bindValue(':epub', $basicBookInfo['epub'], SQLITE3_TEXT);
+            $stmt->bindValue(':mobi', $basicBookInfo['mobi'], SQLITE3_TEXT);
+            $stmt->bindValue(':code', $basicBookInfo['code'], SQLITE3_TEXT);
+            $stmt->execute();
+        }
+    }
+
+    public function saveBookDetails($bookDetails)
+    {
+        print_r($bookDetails['nid']);
+        if ($this->isBookByNid($bookDetails['nid'])) {
+        print_r($bookDetails);
+
+            echo 'xxx';
+
+            $stmt = $this->getDatabase()->prepare('UPDATE book SET datepublished = :datepublished, reviewCount = :reviewCount, ratingValue = :ratingValue, numberofpages = :numberofpages, upd_dt = (DATETIME(\'now\')) WHERE nid = :nid');
+            $stmt->bindValue(':datepublished', $bookDetails['datepublished'], SQLITE3_TEXT);
+            $stmt->bindValue(':reviewCount', $bookDetails['reviewCount'], SQLITE3_INTEGER);
+            $stmt->bindValue(':ratingValue', $bookDetails['ratingValue'], SQLITE3_FLOAT);
+            $stmt->bindValue(':numberofpages', $bookDetails['numberofpages'], SQLITE3_INTEGER);
+            $stmt->bindValue(':nid', $bookDetails['nid'], SQLITE3_INTEGER);
+            print_r($stmt->execute());
+        }
+
+
+    }
+
+    public function getBookDetails($bookUrl)
+    {
+        $bookUrl = $this->resolveBookUrl($bookUrl);
+        $bookData = [];
+        $bookPage = new Document($bookUrl, true);
+        $bookData['datepublished'] = $bookPage->first('.book-top-block-info-authors time[itemprop="datePublished"]::attr(datetime)');
+        $bookData['numberofpages'] = $bookPage->first('span[itemprop="numberOfPages"]::text');
+        $bookData['paper_isbn'] = $bookPage->first('.book-info-details span[itemprop="isbn"]::text');
+        $bookData['ebook_isbn'] = $bookPage->first('div.digital-product[data-product-type="ebooks"]::attr(data-product-id)');
+        $bookData['ebook_price'] = $bookPage->first('div.digital-product[data-product-type="ebooks"]::attr(data-product-price)');
+        $bookData['paper_price'] = $bookPage->first('div.physical-product[data-product-type="books"]::attr(data-product-price)');
+        $bookData['reviewCount'] = $bookPage->first('meta[itemprop="reviewCount"]::attr(content)');
+        $bookData['ratingValue'] = $bookPage->first('meta[itemprop="ratingValue"]::attr(content)');
+
+        $bookData['toc'] = [];
+        foreach ($bookPage->find('#book-info-toc.onlyDesktop .book-toc-chapter') as $chapter) {
+            if (!is_null($chapter->first('div[class*="book-toc-chapter-title"]'))) {
+                $tocSection = [];
+                $tocSection['title'] = trim($chapter->first('div[class*="book-toc-chapter-title"]')->text());
+                $tocSection['subchapters'] = $chapter->find('div[class*="book-toc-section-text"]::text');
+                $bookData['toc'][] = $tocSection;
+            }
+        }
+
+        $bookData['title'] = $bookPage->first('h1[itemprop="name"]::text');
+        $bookData['description'] = $bookPage->find('div.book-info-bottom-indetail-text[itemprop="description"] p::text');
+        $bookData['willLearn'] = $bookPage->find('div.book-info-will-learn-text li::text');
+
+        $bookData['category'] = $bookPage->first('div[data-product-id="' . $bookData['paper_isbn'] . '"]::attr(data-product-category)');
+//        $bookData['price'] = $bookPage->first('div[data-product-id="' . $bookData['isbn'] . '"]::attr(data-product-price)');
+//        $bookData['price'] = $bookPage->first('div[data-product-id="' . $bookData['paper_isbn'] . '"][data-product-type="ebooks"]');
+//        $bookData['nid'] = $bookPage->first('div[data-product-id="' . $bookData['paper_isbn'] . '"]::attr(data-product-nid)');
+        $bookData['nid'] = $bookPage->first('div.digital-product[data-product-type="ebooks"]::attr(data-product-nid)');
+
+        $bookData['authors'] = [];
+        foreach ($bookPage->find('[itemprop="author"]') as $author) {
+
+            $authorData = [];
+            $authorData['name'] = trim($author->first('.book-info-bottom-author-title')->text());
+            $authorData['bio'] = preg_replace('#\s{2,}#', ' ', trim($author->first('.book-info-bottom-author-body')->text()));
+            $bookData['authors'][] = $authorData;
+        }
+        return $bookData;
+    }
+
+}
+
+echo '<pre>';
+
+$packt = new Packt($loginData);
+
+
+//$books = $packt->saveBooks();
+//print_r($books);
+
+
+echo '<pre>';
+$bookDetails = $packt->getBookDetails('/web-development/dependency-injection-angularjs');
+print_r($bookDetails);
+//$packt->saveBookDetails($bookDetails);
+
+
+die();
+
 function c($url, $post = [], $localFilePath = null)
 {
     $cookie = "cookie.txt";
@@ -127,7 +405,6 @@ function saveBookChapters($data, $bookId)
             }
         }
     }
-
 }
 
 
@@ -176,7 +453,6 @@ while ($book = $booksResult->fetchArray(SQLITE3_ASSOC)) {
     }
 
 
-
 }
 
 //$data = json_decode(file_get_contents('data.txt'), 1);
@@ -304,13 +580,11 @@ VALUES  (:nid, :title, :isbn, :img, :url, :datepublished, :numberofpages, :revie
 function downloadBook($url)
 {
 
-    if (strlen($url) && !fileExists(fileNameFromPath($url))) {
+    if (strlen($url) && !file_exists(fileNameFromPath($url))) {
         $localPath = fileNameFromPath($url);
         $directory = directoryNameFromPath($url);
         $fullUrl = resolveBookUrl($url);
 
-        echo ($fullUrl) . "\n";
-//        var_dump($localPath);
         if (!is_dir($directory)) {
             mkdir($directory, 0777, true);
         }
@@ -332,8 +606,4 @@ function directoryNameFromPath($filePath)
     return 'books' . DIRECTORY_SEPARATOR . $filePathParts[1] . DIRECTORY_SEPARATOR;
 }
 
-function fileExists($filePath)
-{
-    return file_exists($filePath);
-}