#!/usr/bin/env python

import re

import sys

import subprocess

examples = """+ 61c8ca9 fix: navbar not responsive on mobile

+ 479c48b test: prepared test cases for user authentication

+ a992020 chore: moved to semantic versioning

+ b818120 fix: button click even handler firing twice

+ c6e9a97 fix: login page css

+ dfdc715 feat(auth): added social login using twitter

"""

def main():

cmd_tag = "git describe --abbrev=0"

tag = subprocess.check_output(cmd_tag,

shell=True).decode("utf-8").split('\n')[0]

cmd = "git log --pretty=format:'%s' {}..HEAD".format(tag)

commits = subprocess.check_output(cmd, shell=True)

commits = commits.decode("utf-8").split('\n')

for commit in commits:

pattern = r'((build|ci|docs|feat|fix|perf|refactor|style|test|chore|revert)(\([\w\-]+\))?:\s.*)|((Merge|Fixed)(\([\w\-]+\))?\s.*)' # noqa

m = re.match(pattern, commit)

if m is None:

print("\nError with git message '{}' style".format(commit))

print("\nPlease change commit message to the conventional format and try to commit again. Examples:") # noqa

print("\n" + examples)

sys.exit(1)

print("Commit messages valid")

if __name__ == "__main__":

main()