utility/pre-commit

#!/bin/bash
# This is a script which can be included in a pre-commit hook to auto format code using specified
# tools. In this script we utilize black for python and intelliJ for Java.

# Only run if black is installed
if hash black 2>/dev/null; then

    # Find all of the .py files in the current git repo, apply black formatting to them and then 
    # add them again
    cached_files=$(git diff --cached --name-status | \
    grep -v '^D' | grep '\.py' | \
    sed 's/[A-Z][ \t]*//')

    # Only run if we have cached python files
    if [ "$cached_files" ]; then 
        black --line-length 100 $cached_files \
     && git add $cached_files \
     || exit 1

     
    fi

else
    echo "Black isn't installed so not formatting python code"
fi

# Only run if intellij is set up
if hash idea.sh 2>/dev/null; then
    # Apply intellij
    cached_files=$(git diff --cached --name-status | \
    grep -v '^D' | grep '\.java' | \
    sed 's/[A-Z][ \t]*//')


    if [ "$cached_files" ]; then 
        idea.sh format -allowDefaults $cached_files 2>/dev/null \
     && git add $cached_files \
     || exit 1
    fi
else
    echo "intellij isn't installed so not formatting java code"
fi