feat: add URL validation and return_html examples

- Add comprehensive URL validation in schema and _create_driver
- Add URL format, length, and character validation
- Add meaningful error messages for validation failures
- Add return_html usage examples in README.md

Co-Authored-By: Joe Moura <joao@crewai.com>

src/crewai_tools/tools/selenium_scraping_tool/README.md

@@ -24,6 +24,16 @@ tool = SeleniumScrapingTool(website_url='https://example.com', css_element='.mai
 
 # Example 4: Scrape using optional parameters for customized scraping
 tool = SeleniumScrapingTool(website_url='https://example.com', css_element='.main-content', cookie={'name': 'user', 'value': 'John Doe'})
+
+# Example 5: Scrape content in HTML format
+tool = SeleniumScrapingTool(website_url='https://example.com', return_html=True)
+result = tool._run()
+# Returns HTML content like: ['<div class="content">Hello World</div>', '<div class="footer">Copyright 2024</div>']
+
+# Example 6: Scrape content in text format (default)
+tool = SeleniumScrapingTool(website_url='https://example.com', return_html=False)
+result = tool._run()
+# Returns text content like: ['Hello World', 'Copyright 2024']
 ```
 
 ## Arguments

src/crewai_tools/tools/selenium_scraping_tool/selenium_scraping_tool.py

@@ -1,8 +1,10 @@
+import re
 import time
 from typing import Any, Optional, Type
+from urllib.parse import urlparse
 
 from crewai.tools import BaseTool
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, validator
 from selenium import webdriver
 from selenium.webdriver.chrome.options import Options
 from selenium.webdriver.common.by import By
@@ -15,12 +17,35 @@ class FixedSeleniumScrapingToolSchema(BaseModel):
 class SeleniumScrapingToolSchema(FixedSeleniumScrapingToolSchema):
     """Input for SeleniumScrapingTool."""
 
-    website_url: str = Field(..., description="Mandatory website url to read the file")
+    website_url: str = Field(..., description="Mandatory website url to read the file. Must start with http:// or https://")
     css_element: str = Field(
         ...,
         description="Mandatory css reference for element to scrape from the website",
     )
 
+    @validator('website_url')
+    def validate_website_url(cls, v):
+        if not v:
+            raise ValueError("Website URL cannot be empty")
+        
+        if len(v) > 2048:  # Common maximum URL length
+            raise ValueError("URL is too long (max 2048 characters)")
+            
+        if not re.match(r'^https?://', v):
+            raise ValueError("URL must start with http:// or https://")
+            
+        try:
+            result = urlparse(v)
+            if not all([result.scheme, result.netloc]):
+                raise ValueError("Invalid URL format")
+        except Exception as e:
+            raise ValueError(f"Invalid URL: {str(e)}")
+            
+        if re.search(r'\s', v):
+            raise ValueError("URL cannot contain whitespace")
+            
+        return v
+
 
 class SeleniumScrapingTool(BaseTool):
     name: str = "Read a website content"
@@ -103,6 +128,13 @@ class SeleniumScrapingTool(BaseTool):
         return elements_content
 
     def _create_driver(self, url, cookie, wait_time):
+        if not url:
+            raise ValueError("URL cannot be empty")
+            
+        # Validate URL format
+        if not re.match(r'^https?://', url):
+            raise ValueError("URL must start with http:// or https://")
+            
         options = Options()
         options.add_argument("--headless")
         driver = self.driver(options=options)