A simple facebook bot created using Selenium webdriver, this is a verly early version of the project, right now the bot can only spam chats and repeat messages sent to him or in group chats, but the idea is to create a strong facebook bot framework capable of manage commands with the use of a menu, some crawling functionality (extract information from different facebook sources). To test the bot simply import the test proyect using Intellij IDEA and run the test case "openFacebook". Put your facebook credentials in the credentials.txt file and dont forget to tell git to ignore the file in the .gitignore file if you share your code.
Selenium Webdriver documentation - Browser automation