.announce

#!/bin/bash -e

# settings.servers.github.privateKey
if [ "$GITHUB_TOKEN" == "" ]; then exit 1; fi

# project.version
if [ "$VERSION" == "" ]; then exit 1; fi

if [ "$1" = "-y" ]; then
  AUTOACCEPT=true
else
  AUTOACCEPT=false
fi

PREVIOUS_VERSION=$(cat CHANGELOG.md | grep -E "## \[\d+[.]\d+[.]\d+\]" | awk '{gsub(/\[|\]/,"",$2); print $2}' | awk 'NR == 2')
if [ "$VERSION" == "$PREVIOUS_VERSION" ]; then
  echo "VERSION $VERSION equal to PREVIOUS_VERSION $PREVIOUS_VERSION"
  exit 1
fi

echo "Announcing $PREVIOUS_VERSION -> $VERSION"

COMMIT_MESSAGE="Updated refs to latest ($VERSION) release"

if [ "$(git status --porcelain=v1 README.md)" != "" ]; then
  echo "To proceed, README.md must not contain uncommitted changes"
  exit 1
fi

escape_for_sed() { echo $1 | sed -e 's/[]\/$*.^|[]/\\&/g'; }

# update readme.md

sed -i "" "s/$(escape_for_sed $PREVIOUS_VERSION)/$(escape_for_sed $VERSION)/g" README.md
git --no-pager diff README.md

# ask for user confirmation
if [[ "$AUTOACCEPT" = false ]]; then
  read -p "commit & push (y/n)? " -n 1 -r; echo; if [[ ! $REPLY =~ ^[Yy]$ ]]; then exit 1; fi
fi

BRANCH="$VERSION-update-refs"

# Make a separate branch because master branch is protected
git checkout --track origin/master -b $BRANCH && git commit -m "$COMMIT_MESSAGE" README.md && git push origin $BRANCH

open "https://github.com/pinterest/ktlint/compare/$BRANCH?expand=1"

# update ktlint.github.io

CHECKOUT_DIR=$(mktemp -d /tmp/ktlint.github.io.XXXXXX)
git clone https://${GITHUB_TOKEN}@github.com/ktlint/ktlint.github.io.git $CHECKOUT_DIR

sed -i "" "s/$(escape_for_sed $PREVIOUS_VERSION)/$(escape_for_sed $VERSION)/g" $CHECKOUT_DIR/index.html
(cd $CHECKOUT_DIR && git --no-pager diff index.html)

# ask for user confirmation
if [[ "$AUTOACCEPT" = false ]]; then
  read -p "commit & push (y/n)? " -n 1 -r; echo; if [[ ! $REPLY =~ ^[Yy]$ ]]; then exit 1; fi
fi

(cd $CHECKOUT_DIR && git commit -m "$COMMIT_MESSAGE" index.html && git push origin master)