Announce script cleanup (pinterest#1732)

- Deleted updates to ktlint.github.io since it now redirects to pinterest.github.io/ktlint
- Made the script more robust

.announce

@@ -1,8 +1,5 @@
 #!/bin/bash -e
 
-# settings.servers.github.privateKey
-if [ "$GITHUB_TOKEN" == "" ]; then exit 1; fi
-
 # project.version
 if [ "$VERSION" == "" ]; then exit 1; fi
 
@@ -23,8 +20,14 @@ echo "Announcing $PREVIOUS_VERSION -> $VERSION"
 COMMIT_MESSAGE="Updated refs to latest ($VERSION) release"
 
 if [ "$(git status --porcelain=v1 docs/install/cli.md docs/install/integrations.md)" != "" ]; then
-  echo "To proceed, cli.md and integrations.md must not contain uncommitted changes"
-  exit 1
+  echo "ERROR: To proceed, cli.md and integrations.md must not contain uncommitted changes"
+  # ask for user confirmation
+  if [[ "$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'; }
@@ -42,22 +45,18 @@ 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
 
 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)