prettify.sh

#!/bin/bash

set -e  # error early

REPO_LOCATION=/Users/desmondbrand/github/flexport

prettierify_branch() {
  branch=$1

  echo ''
  echo ''

  # Don't run on already processed branches
  if git rev-parse $branch-prettied >/dev/null 2>&1; then
    echo "skipping already prettied branch $branch"
    return
  fi
  if git rev-parse $branch-conflicts >/dev/null 2>&1; then
    echo "skipping due to conflicts on branch $branch"
    return
  fi

  # Don't run on post-prettier branches
  if [ "$branch" = "run-prettier" ] || [ "$branch" = "prettier" ] || [ "$branch" = "prepare-prettier" ]; then
    echo "refusing to run on branch ${branch}"
    return
  fi

  # Don't run if there are no Javascript changes
  njsfiles=$(git log --name-only --pretty="format:" origin/master..origin/${branch} | sort -u | grep . | grep -c 'jsx\?$') || true
  if [ $njsfiles = "0" ]; then
    echo "no js changes on branch ${branch}"
    return
  fi

  echo "prettying $branch"

  # get the fork point
  branchroot=$(git merge-base origin/master origin/$branch) || {
    echo "no fork point for branch $branch; skipping"
    return
  }

  # checkout the branch
  git branch --force $branch origin/$branch
  git checkout $branch
  git reset --hard

  # make a backup label
  backup_branch=$branch-pre-prettier
  git branch -f "$backup_branch" "$branch"

  # squash to one commit
  author=`git log --format="%aN <%aE>" $backup_branch^!`
  git reset --hard $branchroot
  git merge --squash $backup_branch
  git commit --no-verify --no-edit --author="$author"

  # now rebase the branch onto pre-prettier master
  git rebase origin/add-prettier || {
    echo "conflicts during rebase for branch $branch; skipping"
    git rebase --abort
    git checkout --detach
    git branch -D $branch $backup_branch
    # git tag $branch-conflicts origin/$branch
    return
  }

  squashed_commit=`git rev-parse HEAD`

  # yarn install to get prettier
  yarn

  # run prettier on this branch
  run_prettier

  # now make new commit with respect to origin/run-prettier
  git reset --soft origin/run-prettier
  git commit --no-verify --reuse-message=$squashed_commit
  # git tag $branch-prettied
  echo "successfully prettied up $branch!"
}

run_prettier() {
  # run prettier on everything
  git ls-files --ignored --exclude-from=./script/prettier/included-files \
    | xargs yarn run prettier -- --write

  # commit!
  GIT_COMMITTER_NAME="prettier" GIT_COMMITTER_EMAIL="prettier@flexport.com" \
    git commit \
      --all \
      --no-verify \
      -m "✨ prettier!" \
      --author="prettier <prettier@flexport.com>"
}


cd $REPO_LOCATION
prettierify_branch $1