A pre-commit bin file to execute on your Rails application at any moment with few hooks that I frequently use.

bin pre-commit

#!/usr/bin/env sh

# Where go this file? Rails.root/bin/pre-commit
# How use? Just run "bin/pre-commit install" or "bin/pre-commit uninstall"
# This will execute the file "lib/pre-commits/pre-commit", who will install 
# ALL files added on "HOOKS" variable.

current_pre_commit=$(cat .git/hooks/pre-commit 2>/dev/null | sed -n 's/PRE_COMMIT_INSTALLED=//p')

if [[ $1 = 'install' ]]; then
  if [[ -z $current_pre_commit ]]; then
    for file in lib/pre-commits/*; do
      chmod +x $file
      cp "$file" ".git/hooks/$(basename $file)"
    done
    echo Pre-commit successfuly instaled.
  else
    echo Pre-commit already instaled.
  fi
elif [[ $1 = 'uninstall' ]]; then
  if [[ $current_pre_commit = 'y' ]]; then
    for file in .git/hooks/pre-commit*; do
      rm $file
    done
    echo Pre-commit successfuly removed.
  else
    echo Pre-commit is not currently instaled.
  fi
fi

pre-commit

#!/usr/bin/env sh


# Where go this file? Rails.root/lib/pre-commits/pre-commit
# pre-commit runner, who will set which pre-commits we will use on HOOKS variable.

PRE_COMMIT_INSTALLED=y
HOOKS="pre-commit-rubocop pre-commit-safe-master"

for hook in $HOOKS; do
  if [ -f "$PWD/.git/hooks/$hook" ]; then
    "$PWD/.git/hooks/$hook"
    if [ $? != 0 ]; then
      exit 1
    fi
  else
    echo "Error: file $hook not found."
    exit 1
  fi
done

pre-commit-rubocop

#!/bin/bash

# Where go this file? Rails.root/lib/pre-commits/pre-commit-rubocop
# This will run the rubocop and commit only if there is no offensives there, with a pretty response.

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

echo -e "${green}[RUBOCOP] -->${NC} Init (wait a second)"

FAILS=`bundle exec rubocop | grep -o '[a-zA-Z0-9]\+ offenses detected' | awk '{print $1}'`

if [ "$FAILS" == "no" ]; then
  echo -e "${green}[RUBOCOP] --> 👍 approved.${NC}"
  exit 0
else
  echo -e "${green}[RUBOCOP] -->${NC} ${red}✋ You've $FAILS offenses!!!${NC}"
  exit 1
fi

pre-commit-safe-master

#!/bin/bash

# Where go this file? Rails.root/lib/pre-commits/pre-commit-safe-master
# Stops accidental commits to master/main/develop

BRANCH=`git rev-parse --abbrev-ref HEAD`

if [[ "$BRANCH" =~ ^(master|main|develop)$ ]]; then
  echo "You are on branch $BRANCH. Are you sure you want to commit to this branch?"
  echo "If so, commit with -n to bypass this pre-commit hook or uninstall pre-commit temporarily."
  exit 1
fi