#!/bin/sh
msg=$(git stripspace --strip-comments <"$1")

abort() {
  echo
  echo "Aborting commit."
  echo "$1"
  echo "$2"
  echo
  echo "If you're sure you want to keep it, run git commit with the --no-verify flag."
  echo
  exit 1
}

if printf '%s\n' "$msg" |
  grep -Eiq '(closes|fixes|resolves|fixed|closed|resolved):?[[:space:]]+#[0-9]+'; then
  abort "The commit message contains an issue closing keyword (closes, fixes, resolves, ...)." \
    "Put it in the pull request description instead, otherwise CI fails."
fi

# A 'BREAKING CHANGE' footer makes semantic-release publish a major version,
# see .releaserc.json.
if printf '%s\n' "$msg" | grep -Eiq '^[[:space:]*]*BREAKING[ -]CHANGE[:[:space:]]'; then
  abort "The commit message contains a 'BREAKING CHANGE:' footer." \
    "This triggers a major release, which we prepare deliberately, see docs/development/major-release.md."
fi