release-preflight.sh

#!/bin/bash
IFS=$'\n'
TMP_FILE=/tmp/release-$(date +"%T").log

# Update local origin
echo "Fetching latest from origin..."
git fetch -q

if [[ -z "$TARGET_BRANCH" ]]; then
  TARGET_BRANCH="master"
fi

if [[ -z "$SOURCE_BRANCH" ]]; then
  SOURCE_BRANCH="develop"
fi

# Write comparison of master and develop to temp file
git log origin/"$TARGET_BRANCH"..origin/"$SOURCE_BRANCH" --oneline --no-merges --pretty=format:"%s" > $TMP_FILE

# Read in domain name if it's not provided in env
if [[ -z $JIRA_DOMAIN ]]; then
  echo -n "JIRA domain: "
  read JIRA_DOMAIN
  printf "\n"
fi

# Read in name and password if they're not provided in env
if ([[ -z "$JIRA_USERNAME" ]] || [[ -z "$JIRA_PASSWORD" ]]) && [[ -z $JIRA_AUTH ]]; then
  echo "Enter JIRA credentials"
  echo -n "Username: "
  read JIRA_USERNAME

  echo -n "Password: "
  read -s JIRA_PASSWORD
  printf "\n"
fi

downloadIssue() {
  BRANCH_NAME=$1
  ISSUE_KEY=$(echo $BRANCH_NAME | cut -d '/' -f 2)

  # Issue call requires auth token or username and password to be passed as environment variables
  if [[ -n $JIRA_AUTH ]]; then
    curl -s --request GET \
      --url "https://$JIRA_DOMAIN.atlassian.net/rest/api/3/issue/$ISSUE_KEY?fields=summary" \
      --header "Authorization: Basic $JIRA_AUTH" \
      --header "Accept: application/json" | \
     perl -nle'print $& while m{"'"summary"'"\s*:\s*"\K([^"]*)}g'
  else
    curl -s --request GET \
      -u "$JIRA_USERNAME:$JIRA_PASSWORD" \
      --url "https://$JIRA_DOMAIN.atlassian.net/rest/api/3/issue/$ISSUE_KEY?fields=summary" \
      --header "Accept: application/json" | \
     perl -nle'print $& while m{"'"summary"'"\s*:\s*"\K([^"]*)}g'
  fi
}

cleanUp() {
  rm $TMP_FILE
  unset IFS
}

OTHER=()
CONVENTIONAL=()
while read -r commit ; do
  if echo $commit | grep -q "release/*"; then
    continue
  elif echo $commit | grep -qE "^[^:]*$"; then 
    OTHER=("${OTHER[@]}" "$commit")
  elif echo $commit | grep -qE "[A-Za-z]{3,11}\/[A-Za-z]{2,4}-[0-9]{1,5}"; then
    CONVENTIONAL=("${CONVENTIONAL[@]}" "$(echo $commit | cut -d ':' -f 1)")
  else
    OTHER=("${OTHER[@]}" "$(echo $commit | cut -d ':' -f 1)")
  fi
done < $TMP_FILE

# Remove duplicates and put commits that follow the convention in an array
SORTED_CONVENTIONAL=($(sort -u <<<"${CONVENTIONAL[*]}"))

# Remove duplicates and put everything else in an array
SORTED_OTHER=($(sort -u <<<"${OTHER[*]}"))

# Display if JIRA issues if commits are found with issue IDs
if [ "${#SORTED_CONVENTIONAL[@]}" -ne 0 ]; then
  echo "==================== TICKETS ===================="
  for i in "${SORTED_CONVENTIONAL[@]}"
  do
    ISSUE_TITLE=$(downloadIssue $i)
    if [[ -n $ISSUE_TITLE ]]; then
      echo "$i: $ISSUE_TITLE"
    else
      echo $i
    fi
  done
fi

# Display if other commits that are not associated with JIRA issues
if [ "${#SORTED_OTHER[@]}" -ne 0 ]; then
  echo "==================== OTHER ======================"
  echo "${SORTED_OTHER[*]}"
fi


# Display message if no changes are found
if [ "${#SORTED_CONVENTIONAL[@]}" -eq 0 ] && [ "${#SORTED_OTHER[@]}" -eq 0 ]; then
  echo "No changes found."
fi

cleanUp