commit-msg

#!/usr/bin/env bash

# Commit message style follow this format
# 
# <type>(<scope>): <subject>
#  
# type is mandatory
# scope is optional
# subject is mandatory
# 
# ----------------------------------------------
# Type has to be one of strings bellow
# 
# build: Changes that affect the build system or external dependencies (example scopes: gulp, broccoli, npm)
# ci: Changes to our CI configuration files and scripts (example scopes: Travis, Circle, BrowserStack, SauceLabs)
# docs: Documentation only changes
# feat: A new feature
# fix: A bug fix
# chore: Change which doesnt affects end user - e.g. modify .gitignore
# perf: A code change that improves performance
# refactor: A code change that neither fixes a bug nor adds a feature
# revert: Reverting code change to previous version
# style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
# test: Adding missing tests or correcting existing tests
# 
# Optional - The scope should be the name of the affected component
# ----------------------------------------------
# 
# Example of valid commit messages:
# fix(release): need to depend on latest rxjs and zone.js
# docs(changelog): update changelog to beta.5
# feat: add register button
# 
# Example of invalid commit messages:
# Add login modal dialog
# docss(changelog): update changelog to beta.5
# czxvcxvasd
# 
# Based on Conventional Commits https://www.conventionalcommits.org/en/v1.0.0/

# =================== Color Output setup ============== #
Red='\033[0;31m'          # Red
Green='\033[0;32m'        # Green
Purple='\033[0;35m'       # Purple
Cyan='\033[0;36m'         # Cyan
NC='\033[0m' 			  # No Color
# ===================================================== #

INPUT_FILE=$1
START_LINE=`head -n1 $INPUT_FILE`
PATTERN="(^(build|ci|docs|feat|fix|perf|refactor|revert|style|test|chore){1}(\([[:alnum:]._-]+\))?(!)?: ([[:alnum:]])+([[:space:][:print:]]*))|(Initial[[:space:]]commit)"

if ! [[ "$START_LINE" =~ $PATTERN ]]; then
  printf "\n${Red}🤦 Bad commit message!${NC} allowed pattern: ${Green}<type>${NC}(${Purple}<scope>${NC}): ${Cyan}<subject>${NC}\nExamples:
  ${Green}fix${NC}(${Purple}release${NC}): ${Cyan}need to depend on latest rxjs and zone.js${NC}
  ${Green}docs${NC}(${Purple}changelog${NC}): ${Cyan}update changelog to beta.5${NC}
  ${Green}feat${NC}: ${Cyan}add register button${NC}\n\n"
  exit 1
fi