Dave Jarvis' Repositories

#!/usr/bin/env bash

release_notes() {
  if [ -z "$1" ]; then
    echo "Error: Provide a starting tag." >&2
    return 1
  fi
  readonly TAG_BEGAN=$1
  readonly TAG_ENDED=${2:-$(git describe --abbrev=0 --tags)}
  readonly REPO_URL="https://repo.autonoma.ca/keenwrite.git"
  readonly CURRENT_DATE=$(date +"%B %d, %Y")

  if [ -z "$TAG_ENDED" ]; then
    echo "Error: Could not determine end tag." >&2
    return 1
  fi

  # Get all tags between the two specified tags (inclusive of end, exclusive of start)
  local tags_between
  tags_between=$(git tag --sort=-version:refname --merged="$TAG_ENDED" | \
    awk "/$TAG_ENDED/{found=1; print} found && /$TAG_BEGAN/{exit} found")

  cat << EOF
# Release notes

$CURRENT_DATE

Changes between $TAG_BEGAN and $TAG_ENDED.

EOF

  # If no intermediate tags, show all changes as one section
  if [ -z "$tags_between" ]; then
    local commits
    commits=$(git log --pretty=format:'* [%h]('$REPO_URL'/commit/%H) -- %s' --reverse "$TAG_BEGAN".."$TAG_ENDED")
    if [ -n "$commits" ]; then
      echo "## $TAG_ENDED"
      echo
      echo "$commits"
      echo
    fi
    return 0
  fi

  # Process each version section (newest first)
  local next_tag="$TAG_ENDED"

  # Add the starting tag to the list to ensure we capture everything
  tags_between=$(echo -e "$tags_between\n$TAG_BEGAN")

  while IFS= read -r current_tag; do
    [ -z "$current_tag" ] && continue

    # Get commits between current_tag and next_tag
    local commits
    commits=$(git log --pretty=format:'* [%h]('$REPO_URL'/commit/%H) -- %s' --reverse "$current_tag".."$next_tag")

    if [ -n "$commits" ]; then
      echo "## $next_tag"
      echo
      echo "$commits"
      echo
    fi
    next_tag="$current_tag"
  done <<< "$tags_between"
}

release_notes "$@"