#!/bin/sh
#
# Recommended pre-commit git hook for activity-stream github repo
#
# Install by executing
#
#   ln -s ../../hooks/pre-commit .git/hooks/pre-commit
#
# at the top-level of the activity-stream github repo.
#
# Runs `eslint --fix` on all selected files, which, given our current
# prettier configuration, means prettifying these files as well.  The
# commit will be aborted if eslint exits with a failure code.
#
# Based on the example script in the prettier docs at
# https://prettier.io/docs/en/precommit.html

FILES=$(git diff --cached --name-only --diff-filter=ACM "*.js" "*.jsx" "*.jsm" | sed 's| |\\ |g')
[ -z "$FILES" ] && exit 0

echo "$FILES" | xargs ./node_modules/.bin/eslint --cache --fix
if [ $? -ne 0 ]
then
  echo "eslint found errors but was unable to fix them all with --fix."
  echo "Please check the output, resolve any issues, and retry."
  echo "If you want to commit anyway, pass the --no-verify flag to git commit."
  exit -1
fi

# Add back the modified/prettified files to staging
echo "$FILES" | xargs git add

exit 0