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README.md

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+
+# Facebook Post Crawler
+
+## Purpose
+This crawler automatically fetches the first post from a Facebook fanpage using Selenium WebDriver and saves the result to `facebook_first_post.json`.
+
+## System Requirements
+- Node.js >= 16
+- Google Chrome browser
+
+## Installation
+1. Clone the repository:
+   ```sh
+   git clone <repo-url>
+   cd Crawler-FB
+   ```
+2. Install required packages:
+   ```sh
+   npm install selenium-webdriver chromedriver dotenv
+   ```
+
+## Environment Setup
+Create a `.env` file in the project root with the following content:
+```
+FB_USERNAME=your_facebook_email_or_phone
+FB_PASSWORD=your_facebook_password
+```
+
+> **Note:** Do not share your `.env` or `facebook_cookies.json` files in git to protect your credentials.
+
+## Running the Crawler
+Navigate to the script directory:
+```sh
+cd crawler-fb
+```
+Run the crawler:
+```sh
+node crawler-fb/crawler-post.js <fanpage_url>
+```
+Example:
+```sh
+node node crawler-fb/crawler-post.js "http://exmaple.com" (website yout want crawler)
+```
+
+- If no URL is provided, the script will crawl the default fanpage `logisticsarena.bacib.tdtu`.
+- Username and password can be set via environment variables or passed as command-line arguments:
+  ```sh
+  node crawler-post.js <fanpage_url> <unused> <unused> <username> <password>
+  ```
+
+## Output
+- The first post will be saved to `facebook_first_post.json`.
+- Login cookies will be saved to `facebook_cookies.json` for future sessions, so you do not need to log in every time.
+
+## Security Notice
+- Each user should log in and generate their own cookies; do not share cookie files between machines.
+- Do not commit `.env` or `facebook_cookies.json` to git.
+
+## Support
+For issues or support, please contact the project administrator.