// from https://github.com/arvinxx/gitmoji-commit-workflow/tree/master/packages/gitmoji-regex
const isGitmoji = (commit) =>
  commit.match(
    /^(?::\w*:|(?:\ud83c[\udf00-\udfff])|(?:\ud83d[\udc00-\ude4f\ude80-\udeff])|[\u2600-\u2B55]|♻️|🥅|🧱|🤡|🏷️|🚧|♻️|✏️|⚡️|🔥|⬆️|⏪|🦺|🗃️)\s(?<type>\w*)(?:\((?<scope>.*)\))?!?:\s(?<subject>(?:(?!#).)*(?:(?!\s).))(?:\s\(?(?<ticket>#\d*)\)?)?$/gm,
  );
const isConventional = (commit) =>
  commit.match(
    /^(feat|fix|docs|style|refactor|perf|test|build|ci|chore|revert|merge)(\(.+\))?:\s/,
  );

module.exports = {
  extends: ['@commitlint/config-conventional', 'gitmoji'],
  rules: {
    'subject-empty': () => {
      const commitMsg = process.env.COMMIT_MSG || '';
      return isGitmoji(commitMsg) ? [0, 'always'] : [2, 'never'];
    },
    'type-empty': () => {
      const commitMsg = process.env.COMMIT_MSG || '';
      return isGitmoji(commitMsg) ? [0, 'always'] : [2, 'never'];
    },
    'start-with-gitmoji': () => {
      const commitMsg = process.env.COMMIT_MSG || '';
      return isGitmoji(commitMsg) && !isConventional(commitMsg)
        ? [2, 'never']
        : [0, 'always'];
    },
  },
};