chore: make the delay parameters for linovelib mandatory

README.md

@@ -172,7 +172,7 @@ if __name__ == '__main__':
     linovelib_epub.run()
 ```
 
-- Tune delay-related parameters[**optional** but **recommend**]
+- Set delay-related parameters[**mandatory**]
 
 ```python
 from linovelib2epub import Linovelib2Epub
@@ -182,17 +182,16 @@ if __name__ == '__main__':
     linovelib_epub.run()
 ```
 
-The default value of `chapter_crawl_delay` is 3(s) and `page_crawl_delay` is 2(s). You can tune them to other values as
-needed.
+The default value of `chapter_crawl_delay` and `page_crawl_delay` are None. You MUST set them to reasonable values.
 
-The example code is as follows to increase the value of all delay parameters.
+The example code is as follows to set the value of all delay parameters.
 
 ```python
 from linovelib2epub import Linovelib2Epub, TargetSite
 
 if __name__ == '__main__':
     linovelib_epub = Linovelib2Epub(book_id=3721, target_site=TargetSite.LINOVELIB_PC,
-                                    chapter_crawl_delay=5, page_crawl_delay=3)
+                                    chapter_crawl_delay=5, page_crawl_delay=5)
     linovelib_epub.run()
 ```
 
@@ -249,7 +248,7 @@ from linovelib2epub import Linovelib2Epub, TargetSite
 
 if __name__ == "__main__":
     linovelib_epub = Linovelib2Epub(book_id=2356, target_site=TargetSite.LINOVELIB_PC,
-                                    chapter_crawl_delay=5, page_crawl_delay=3,
+                                    chapter_crawl_delay=5, page_crawl_delay=5,
                                     select_volume_mode=True,
                                     # disable_proxy=False,
                                     # log_level="DEBUG",

pyproject.toml

@@ -52,7 +52,7 @@ dependencies = [
     'brotli>=1.1.0',
     'lxml>=5.3.0',
     'tabulate>=0.9.0',
-    'DrissionPage>=4.0.4.5',
+    'DrissionPage>=4.0.4.23',
     'selenium>=4.17.2',
     'esprima>=4.0.1',
     'pytesseract>=0.3.10'

requirements.txt

@@ -7,7 +7,7 @@ aiohttp==3.10.2
 brotli==1.1.0
 bs4==0.0.1
 demjson3==3.0.5
-DrissionPage==4.0.4.5
+DrissionPage==4.0.4.23
 dynaconf==3.2.3
 EbookLib==0.17.1
 esprima==4.0.1

src/linovelib2epub/linovel.py

@@ -320,6 +320,16 @@ class TargetSite(Enum):
     MASIRO = 'masiro'
     WENKU8 = 'wenku8'
 
+def is_linovelib(target: TargetSite):
+    return target in [
+        TargetSite.LINOVELIB_MOBILE,
+        TargetSite.LINOVELIB_MOBILE_TRADITIONAL,
+        TargetSite.LINOVELIB_PC,
+        TargetSite.LINOVELIB_PC_TRADITIONAL
+    ]
+
+def check_if_non_negative_number(number):
+    return isinstance(number, (int, float)) and number >= 0
 
 class Linovelib2Epub:
 
@@ -343,13 +353,24 @@ def __init__(self,
                  log_level: str = "INFO",
                  browser_path: str | None = None,
                  browser_driver_path: str | None = None,
-                 chapter_crawl_delay: int | None = 3,
-                 page_crawl_delay: int | None = 2,
+                 chapter_crawl_delay: int | None = None,
+                 page_crawl_delay: int | None = None,
                  headless: bool = False,
                  image_download_max_epochs: int | None = None
                  ):
+        # common mandatory parameters check
         if book_id is None:
-            raise LinovelibException('book_id parameter must be set.')
+            raise ValueError('The book_id parameter must be set.')
+
+        # specified parameters check for linovelib target
+        if is_linovelib(target_site):
+            if chapter_crawl_delay is None or page_crawl_delay is None:
+                raise ValueError('The chapter_crawl_delay and page_crawl_delay parameters must be set for any LINOVELIB target.')
+            if not check_if_non_negative_number(chapter_crawl_delay):
+                raise ValueError(f'The chapter_crawl_delay should be a non negative number but got {chapter_crawl_delay}.')
+            if not check_if_non_negative_number(page_crawl_delay):
+                raise ValueError(f'The page_crawl_delay should be a non negative number but got {page_crawl_delay}.')
+
 
         self.target_site = target_site