RuboCop with git pre-commit

pre-commit

#!/bin/sh
#
# Check for ruby style errors and autocorrect.

red='\033[0;31m'
green='\033[0;32m'
yellow='\033[0;33m'
NC='\033[0m'

# Get only the staged files
FILES="$(git diff --cached --name-only --diff-filter=AMC | grep "\.rb$" | tr '\n' ' ')"

echo "${green}[Ruby Style][Info]: Checking Ruby Style${NC}"

if [ -n "$FILES" ]
then
    echo "${green}[Ruby Style][Info]: ${FILES}${NC}"
    
    if [ ! -f '.rubocop.yml' ]; then
      echo "${yellow}[Ruby Style][Warning]: No .rubocop.yml config file.${NC}"
    fi
    
    # Run rubocop on the staged files
    rubocop ${FILES} --out /dev/null
    
    if [ $? -ne 0 ]; then
      rubocop --auto-correct
      echo "${red}[Ruby Style][Error]: Fix the issues and commit again${NC}"
      exit 1
    fi
else
    echo "${green}[Ruby Style][Info]: No files to check${NC}"
fi

exit 0