Before running parse operation on search results page it checks now if there are any books to parse.

README.md

@@ -0,0 +1,44 @@
+## Installation 
+
+Place this in the composer.json.
+
+```composer 
+{
+  "repositories": [{
+    "type": "composer",
+    "url": "https://satis.techtube.pl"
+  }]
+}
+```
+Then execute
+
+```bash
+composer require techtube/bookinfo:"1.0.4"
+```
+
+## Usage
+
+To get information about the book by the link:
+
+```php
+<?php
+
+include_once 'vendor/autoload.php';
+
+$searcher = new \Techtube\Bookinfo\BookFinder();
+$data = $searcher->byUrl('https://lubimyczytac.pl/ksiazka/5008411/oni');
+
+print_r($data);
+```
+
+To search the book by phrase:
+```php
+<?php
+
+include_once 'vendor/autoload.php';
+
+$searcher = new \Techtube\Bookinfo\BookFinder();
+$data = $searcher->search('jack reacher');
+
+print_r($data);
+```

src/Api/AbstractBookInfo.php

@@ -14,6 +14,7 @@ abstract class AbstractBookInfo
     public int $pages;
     public string $cycle;
     public int $volume;
-    public string $language;
+    public ?string $language;
     public string $datePublished;
+    public ?string $publisher;
 }

src/BookFinder.php

@@ -7,7 +7,7 @@ use Techtube\Bookinfo\Api\AbstractBookInfo;
 
 class BookFinder
 {
-    private static $searchUrl = 'https://lubimyczytac.pl/szukaj/ksiazki?phrase=';
+    private static string $searchUrl = 'https://lubimyczytac.pl/szukaj/ksiazki?phrase=';
 
     private DataParser $parser;
 
@@ -21,12 +21,12 @@ class BookFinder
         return $this->parser->searchPage(new Document($this->getSearchUrl($phrase), true));
     }
 
-    public function byUrl($url): AbstractBookInfo
+    public function byUrl(string $url): AbstractBookInfo
     {
         return $this->parser->singlePage(new Document($url, true));
     }
 
-    public function getSearchUrl(string $phrase): string
+    private function getSearchUrl(string $phrase): string
     {
         return self::$searchUrl . $phrase;
     }

src/DataParser.php

@@ -18,21 +18,23 @@ class DataParser
     {
         $info = new Info();
         $jsonInfo = json_decode($document->first('script[type="application/ld+json"]')->text());
+        $info->url = $document->getDocument()->baseURI;
+        $info->publisher = $document->first('a[href*="wydawnictwo"]')?->text();
         $info->author = $document->first('meta[property="books:author"]')->getAttribute('content');
         $info->isbn = $document->first('meta[property="books:isbn"]')->getAttribute('content');
-        $info->description = $document->first('meta[property="og:description"]')->getAttribute('content');
+        $info->description = trim($document->first('#book-description p')->text());
         $info->title = trim($document->first('h1.book__title')->text());
         $info->category = trim($document->first('.book__category')->text());
         $info->cover_url = $this->generateCoverUrls(
             $document->first('meta[property="og:image"]')->getAttribute('content')
         );
         $info->pages = (int)$document->first('span.book__pages')?->text();
-        if (preg_match('#(.*) \(tom (\d*)\)#ism', trim($document->first('a[href*="/cykl/"]')?->text()), $series)) {
+        if (preg_match('#(.*) \(tom (\d*)\)#ism', trim($document->first('a[href*="/cykl/"]')?->text() ?? ''), $series)) {
             $info->cycle = $series[1];
             $info->volume = $series[2];
         }
-        $info->language = $jsonInfo->inLanguage ?? null;
-        $info->datePublished = $jsonInfo->datePublished ?? null;
+        $info->language = $jsonInfo?->inLanguage ?? trim($document->xpath("//*[contains(text(), 'Język:')]")[0]->nextSibling('dd')->text());
+        $info->datePublished = $jsonInfo?->datePublished ?? null;
 
         return $info;
     }
@@ -47,13 +49,15 @@ class DataParser
         $books = $document->find('#search .authorAllBooks__single');
 
         $booksInfo = [];
-        foreach ($books as $book) {
-            $bookInfo = new Info();
-            $bookInfo->title = trim($book->first('.authorAllBooks__singleTextTitle')->text());
-            $bookInfo->author = trim($book->first('.authorAllBooks__singleTextAuthor')->text());
-            $bookInfo->url = $book->first('button[data-book-url]')->getAttribute('data-book-url');
-            $bookInfo->cover_url = $this->generateCoverUrls($book->first('.img-fluid')->getAttribute('data-src'));
-            $booksInfo[] = $bookInfo;
+        if ($document->has('#searchksiazki')) {
+            foreach ($books as $book) {
+                $bookInfo = new Info();
+                $bookInfo->title = trim($book->first('.authorAllBooks__singleTextTitle')->text());
+                $bookInfo->author = trim($book->first('.authorAllBooks__singleTextAuthor')->text());
+                $bookInfo->url = $book->first('button[data-book-url]')->getAttribute('data-book-url');
+                $bookInfo->cover_url = $this->generateCoverUrls($book->first('.img-fluid')->getAttribute('data-src'));
+                $booksInfo[] = $bookInfo;
+            }
         }
         return $booksInfo;
     }