git-log-by-monorepo-package.sh

#!/usr/bin/env bash

# Script will open up fzf to select a monorepo package and show the git commit log for that monorepo package.
# (Start the script in your monorepo root directory)
# Requires:
# - git 
# - pnpm 
# - fzf >= 0.29.0
# 
# Author: Lars Gersmann <[email protected]>
# Created: 2022-02-24

set -Eeuo pipefail
trap cleanup SIGINT SIGTERM ERR EXIT

script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)

usage() {
  cat << EOF # remove the space between << and EOF, this is due alue arg1 
Script description here.

Available options:

-h, --help      Print this help and exit
-v, --verbose   Print script debug info
-f, --flag      Some flag description
-p, --param     Some param description
EOF
  exit
}

cleanup() {
  trap - SIGINT SIGTERM ERR EXIT
  # script cleanup here
}

WORKSPACE_PACKAGES=$(pnpm -r exec pwd | xargs realpath --relative-to="$script_dir/..")

_package2path() {
  local package="$1"
  local path="$(pnpm --filter="$package" exec pwd | xargs realpath --relative-to="$script_dir/..")"

  echo $path
}

_command_info() {
  local package="$1"
  local path="$(_package2path "$package")"
  echo "git log for package $package ($path)
  
$(git --no-pager log --color -- $path)
"

exit 0
}

parse_params() {
  # default values of variables set from params
  flag=0
  param=''

  while :; do
    case "${1-}" in
    -h | --help) usage ;;
    -v | --verbose) set -x ;;
    -f | --flag) flag=1 ;; # example flag
    -p | --param) # example named parameter
      param="${2-}"
      shift
      ;;
    _command_info)
      shift
      _command_info "$@"
    ;;
    -?*) die "Unknown option: $1" ;;
    *) break ;;
    esac
    shift
  done

  args=("$@")

  # check required params and arguments
  #[[ -z "${param-}" ]] && die "Missing required parameter: param"
  #[[ ${#args[@]} -eq 0 ]] && die "Missing script arguments"
}

parse_params "$@"

PREVIEW_CMD="'${BASH_SOURCE[0]}' _command_info '{}'"

package=$("$script_dir/fzf" \
  --reverse \
  --no-sort \
  --select-1 \
  --disabled \
  --no-multi \
  --border=rounded \
  --no-info \
  --exit-0 \
  --prompt='' \
  --header-lines=3 \
  --ansi \
  --bind 'esc:execute(echo "$1" && exit)' \
  --preview-window=80% \
  --preview="$PREVIEW_CMD" \
  < <(echo "
git commits by monorepo package

$(pnpm list --recursive '@*/*' --json | jq -r  '.[].name | select( . != null )')")
)  
 
echo "git log --color -- $(_package2path $package)"