Script used to deploy my personal notes repository, placed in `/opt/webhook/deploy-treasury.sh`

deploy-treasury.sh

#!/bin/bash -e
# Note the '-e' in the line above. This is required for error trapping implemented below.

# required when inside <webhook> service as $HOME variable is not set
if [ -z "${HOME:-}" ]; then export HOME="$(cd ~ && pwd)"; fi

# hugo bin
HUGO_BIN="/home/linuxbrew/.linuxbrew/bin/hugo"

# Repo name on GitHub
REMOTE_REPO="git@github.com:user/repo.git"
REMOTE_REPO_SSH_KEY="$HOME/.ssh/id_rsa.github.repo"
REMOTE_SUBMODULE_SSH_KEY="$HOME/.ssh/id_rsa.github.submodule"

# Domain name so Hugo can generate links correctly
MY_DOMAIN="example.com"

# Location (server block) where Nginx looks for content to serve
PUBLIC_WWW="/var/www/example/web"

# A place to clone the remote repo so Hugo can build from it
WORKING_DIRECTORY="$HOME/hugo-staging_area"

# Backup folder in case something goes wrong during this script
BACKUP_WWW="$HOME/hugo-backup_html"

# For future notifications on Telegram (payload from GitHub)
commit_message="$1"
pusher_name="$2"
commit_id="$3"

# If something goes wrong, put the previous version back in place
function cleanup {
    echo "A problem occurred. Reverting to backup."
    rsync -aqz --del "$BACKUP_WWW/" "$PUBLIC_WWW"
    rm -rf "$WORKING_DIRECTORY"
    # !!Placeholder for Telegram notification
}

# Call the cleanup function if this script exits abnormally. The -e flag
# in the shebang line ensures an immediate abnormal exit on any error
trap cleanup EXIT

# Clear out the working directory
# rm -rf $WORKING_DIRECTORY
# Make a backup copy of current website version
rsync -aqz "$PUBLIC_WWW/" "$BACKUP_WWW"

# Pull from GitHub
#
if [[ ! -d "$WORKING_DIRECTORY" ]]; then
  export GIT_SSH_COMMAND="ssh -o IdentitiesOnly=yes -i $REMOTE_REPO_SSH_KEY -F /dev/null"
  git clone "$REMOTE_REPO" "$WORKING_DIRECTORY"

  cd "$WORKING_DIRECTORY"
  export GIT_SSH_COMMAND="ssh -o IdentitiesOnly=yes -i $REMOTE_SUBMODULE_SSH_KEY -F /dev/null"
  git submodule update --init
else
  cd "$WORKING_DIRECTORY"
  export GIT_SSH_COMMAND="ssh -o IdentitiesOnly=yes -i $REMOTE_REPO_SSH_KEY -F /dev/null"
  git pull
fi

export GIT_SSH_COMMAND="ssh -o IdentitiesOnly=yes -i $REMOTE_SUBMODULE_SSH_KEY -F /dev/null"
git submodule update --remote

# Placeholder for future Telegram notification

# Delete old version; Be careful as double quotes prevent the wildcard expansion
rm -rf "$PUBLIC_WWW/"*

# Have Hugo generate the new static HTML directly into the public WWW folder
$HUGO_BIN -s "$WORKING_DIRECTORY" -d "$PUBLIC_WWW" -b "https://${MY_DOMAIN}"

# !!Placeholder for Telegram notification

# Clear out working directory
# rm -rf "$WORKING_DIRECTORY"
# Exit without trapping, since everything went well
#
echo "* Updated repos as '$(whoami)' in '$PWD'"
# touch "$HOME/hugo_deployed_$(date +"%Y-%m-%d_%H-%M-%S").done"
trap - EXIT