Scrape Books from URL with Dumpling AI, Clean HTML, Save to Sheets, Email as CSV

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        "content": "### Scrape Books from URL with Dumpling AI, Clean HTML, Save to Sheets, Email as CSV

📌 This workflow scrapes book data from a website, turns it into a CSV, saves it, and sends it by email.

🔧 It starts from a Google Sheets trigger, fetches the page using DumplingAI, extracts books, sorts by price, and emails the CSV.

✅ Make sure APIs for Gmail, Sheets & Drive are enabled in Google Cloud. Update the URL in the \"Fetch website content\" node.
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        "content": "### 🔁 Trigger to Raw Book HTML

1. **Google Sheets Trigger**  
   Watches a sheet for new row entries. Once a new URL is added, the workflow starts.

2. **Fetch Website Content (Dumpling AI)**  
   Makes an HTTP POST request to Dumpling AI to scrape and return the full HTML of the target URL.

3. **Extract All Books**  
   Uses CSS selectors to isolate the list items (`li.row > li`) containing book entries.

4. **Split Out Node**  
   Breaks the array of book HTML blocks into individual items, so each book can be processed separately in the next steps.
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        "content": "### 📦 Parse, Sort, Export & Email

5. **Extract Individual Book Data**  
   From each book, extract the title (`<h3>a` title attribute) and price (`.price_color` content).

6. **Sort by Price**  
   Organizes the extracted data in descending order using the price field.

7. **Convert to CSV File**  
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8. **Send CSV via Gmail**  
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