.announce

#!/bin/bash -e

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

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

PREVIOUS_VERSION=$(grep -E "## \[[0-9]+\.[0-9]+\.[0-9]+\]" CHANGELOG.md | awk '{gsub(/\[|\]/,"",$2); print $2}' | awk 'NR == 2')

if [ -z "$PREVIOUS_VERSION" ]; then
  echo "Cannot find PREVIOUS_VERSION."
  exit 1
fi

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 [ "$(git status --porcelain=v1 docs/install/cli.md docs/install/integrations.md)" != "" ]; then
  echo "ERROR: To proceed, cli.md and integrations.md must not contain uncommitted changes"
  # ask for user confirmation
  if [[ "$AUTOACCEPT" = false ]]; then
    read -p "revert changes? (y/n)? " -n 1 -r; echo; if [[ ! $REPLY =~ ^[Yy]$ ]]; then exit 1; else git checkout docs/install/cli.md docs/install/integrations.md; fi
  else
    echo "Reverting changes to cli.md and integrations.md"
    git checkout docs/install/cli.md docs/install/integrations.md
  fi
fi

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

# update Docs

sed -i -e "s/$PREVIOUS_VERSION/$VERSION/g" docs/install/cli.md
sed -i -e "s/$PREVIOUS_VERSION/$VERSION/g" docs/install/integrations.md
git --no-pager diff docs/install/cli.md docs/install/integrations.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"

if [ "$(git show-ref refs/heads/$BRANCH)" != "" ]; then
  echo "ERROR: Branch $BRANCH already exists."
  if [[ "$AUTOACCEPT" = false ]]; then
      read -p "Delete local branch? (y/n)? " -n 1 -r; echo; if [[ ! $REPLY =~ ^[Yy]$ ]]; then exit 1; else git branch -D $BRANCH; fi
    else
      echo "Deleting local branch $BRANCH"
      git branch -D $BRANCH
    fi
fi

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