#!/usr/bin/env bash

# Simple Continuous Deployment script
#   - Compares hashes of the local and remote main git branches 
#   - Pulls changes if needed
#   - If changes was pulled, builds and deploys them

# TODO
#   - Configuration to use with a specific git branch
#   - Replace hard coded variables with script arguments

# Crontab entry:
# * * * * * bash /usr/local/bin/static-site-continious-deployment.sh >> /var/log/deploy-cuqmbr-xyz.log 2>&1

set -Eeuo pipefail
trap 's=$?; echo >&2 "$0: Error on line "$LINENO": $BASH_COMMAND"; exit $s' ERR


GIT_REPO_PATH="/opt/cuqmbr.xyz.git"
DEPLOY_PATH="/var/www/cuqmbr.xyz"


build() {
    touch cron-lock

    # Replace with your build script
    hugo

    rm cron-lock
}

deploy() {
    # Replace with your deployment strategy
    ln -snfv ${GIT_REPO_PATH}/public ${DEPLOY_PATH}
}


# Initial deployment

if [ ! -d ${GIT_REPO_PATH} ]; then
    git clone --recurse-submodules 'https://gitea.cuqmbr.xyz/cuqmbr/cuqmbr.xyz.git' ${GIT_REPO_PATH}
    cd ${GIT_REPO_PATH}
    build
    deploy
    exit 0
fi


# Periodic updates

cd ${GIT_REPO_PATH}

git remote update
LOCAL_COMMIT=$(git rev-parse @)
REMOTE_COMMIT=$(git rev-parse @{u})

if [ "$LOCAL_COMMIT" != "$REMOTE_COMMIT" ]; then
    git reset --hard 'origin/main'
    rm -Rf public
    build
    deploy
fi