update-repos.sh

#!/bin/bash -
#===============================================================================
#          FILE: repos.sh
#
#         USAGE: Update all the git repos in your ~/code directory. This will
#                skip over "dirty" (code changed and uncommited) repos and
#                give a warning and, after completion, list those repos.
#
#                The script will ask if you want to npm install or npm build
#                in the frontend repos, default is "n" (no).
#
#         NOTES: Standard git, npm, and nvm output is suppressed! This includes
#                errors! If you don't like it, remove the `> /dev/null 2>&1`
#
#                If your checked-out branch isn't master _and_ it's clean
#                (commited work), the script will switch the branch to master,
#                pull it, and switch back to your working branch.
#
#  REQUIREMENTS: Run from your ~/code directory
#          BUGS: Report to matthew.young@dollarshaveclub.com
#        AUTHOR: Matt Young
#  ORGANIZATION: Dollar Shave Club
#       CREATED: 08/01/2017
#      REVISION: 5
#===============================================================================

set -o nounset                              # Treat unset variables as an error

RED='\033[0;31m'
GREEN='\033[0;32m'
NORMAL='\033[0m'
YELLOW='\033[0;33m'
DIRECTORY_BEING_REFRESHED=""
RET_VALUE=""
DIRTY_REPOS=()

NPM_INSTALL="n"
NPM_BUILD="n"

printf '\n'
echo "************************************************************"
echo -e "${RED}Checking the repositories in your ~/code directory.${NORMAL}"
echo "************************************************************"

printf '\n'
printf "${YELLOW}Would you like this script to install frontend dependencies?: (y/n) ${NORMAL}"
read -n1 NPM_INSTALL
printf '\n'

printf "${YELLOW}Would you like this script to build the frontend repos?: (y/n) ${NORMAL}"
read -n1 NPM_BUILD
printf '\n'

printf '\n'
echo -e "Git checkouts, git pulls, npm installs, and npm builds may take some time. Get coffee!"
printf '\n'

change_to_dir () {
  directory=(${1//\// })
  DIRECTORY_BEING_REFRESHED=${directory[${#directory[@]}-1]}
  cd "$1" || exit
  update_repo "$1"
}

update_repo () {
  CHECKED_OUT_REPO=$(git symbolic-ref --short -q HEAD)

  if [ -n "$(git status --porcelain)" ]; then
    DIRTY_REPOS+=("$1")
    return
  else
    if [[ $CHECKED_OUT_REPO != "master" ]]; then
      git checkout master > /dev/null 2>&1
      git pull origin master > /dev/null 2>&1
      if [[ $NPM_INSTALL == "y" ]]; then
        nvm use > /dev/null 2>&1
        npm i > /dev/null 2>&1
      fi
      if [[ $NPM_BUILD == "y" ]]; then
        npm run build > /dev/null 2>&1
      fi
      git checkout "$CHECKED_OUT_REPO" > /dev/null 2>&1
    else
      git pull origin master > /dev/null 2>&1
      if [[ $NPM_INSTALL == "y" ]]; then
        nvm use > /dev/null 2>&1
        npm i > /dev/null 2>&1
      fi
      if [[ $NPM_BUILD == "y" ]]; then
        npm run build > /dev/null 2>&1
      fi
    fi

  fi
  cd ~/code || exit
}

BAR_WIDTH=50
BAR_CHAR_START="["
BAR_CHAR_END="]"
BAR_CHAR_EMPTY="."
BAR_CHAR_FULL="="
BRACKET_CHARS=2
LIMIT=100

print_progress_bar() {
  # Calculate how many characters will be full.
  let "full_limit = ((($1 - $BRACKET_CHARS) * $2) / $LIMIT)"

  # Calculate how many characters will be empty.
  let "empty_limit = (($1 - $BRACKET_CHARS) - ${full_limit})"

  # Prepare the bar.
  bar_line="${BAR_CHAR_START}"
  for ((j=0; j<full_limit; j++)); do
          bar_line="${bar_line}${BAR_CHAR_FULL}"
  done

  for ((j=0; j<empty_limit; j++)); do
          bar_line="${bar_line}${BAR_CHAR_EMPTY}"
  done

  bar_line="${bar_line}${BAR_CHAR_END}"
  RET_VALUE=$(printf " %3d%% %s" $2 ${bar_line})
}

if [[ $PWD == *"code" ]]
  then
    echo " PROGRESS:"
    printf '\n'

    DIR_COUNT=$(expr $(find ~/code -maxdepth 1 | wc -l) - 2) # Subtract 2 because it counts the parent director (~/code) twice
    DIR_NUM=1
    PERCENT_DONE=$(echo $(printf %.0f $(expr "scale=1;1 / ${DIR_COUNT} * 100" | bc -l)) | bc)

    for DIR in $(find ~/code -maxdepth 1);
    do if test -d "$DIR"; then
      if [[ $DIR != *"/code" ]] && [[ $DIR != *"/node_modules" ]]; then
        change_to_dir "${DIR}"
        DIR_NUM=$(expr $DIR_NUM + 1)
        PERCENT_DONE=$(echo $(printf %.0f $(expr "scale=1;${DIR_NUM} / ${DIR_COUNT} * 100" | bc -l)) | bc)
        print_progress_bar ${BAR_WIDTH} ${PERCENT_DONE}
        tput cuu1
        tput el
        echo -ne "${RET_VALUE}\n Pulling repo: ${GREEN}${DIRECTORY_BEING_REFRESHED}${NORMAL} \033[0K\r"
      fi
    fi
    done

    printf '\n\n'
    echo -e "${GREEN}DONE!${NORMAL}"
    printf '\n'
    if [[ ${#DIRTY_REPOS[@]} -gt 1 ]]; then
      echo -e "There were ${RED}${#DIRTY_REPOS[@]}${NORMAL} dirty repos:"
      for item in "${DIRTY_REPOS[@]}"
      do
        echo "$item"
      done
    fi
    if [[ ${#DIRTY_REPOS[@]} == 1 ]]; then
      echo -e "There was ${RED}${#DIRTY_REPOS[@]}${NORMAL} dirty repo:"
      echo "${DIRTY_REPOS[@]}"
    fi
    if [[ ${#DIRTY_REPOS[@]} -lt 1 ]]; then
      echo "There were ${RED}no${NORMAL} dirty repos. Get back to work."
    fi
    printf '\n'
    exit 0
  else
    echo -e "${RED}Please run this script from your ~/code directory"
    exit 1
  fi