#!/usr/bin/env bash
set -e

###
# FLOW
###
#
# if the private key variable is set, prepend "-i" to it
# if the username variable is set, append the at sign to it
# if either the deployment host or deployment path variables are not set, return an error
# tarball the built website and scp it to the deployment host
# ssh to the remote host, cd to the deployment path, and get the data path from .env file
# then remove everything in the data path, untar the tarball and reload the server
# finally remove the tarball, both from the remote host and locally (cleanup)

# Check if the private key variable is set
if [ ! -z "${SSH_PRIVATE_KEY}" ]; then
    SSH_PRIVATE_KEY="-i ${SSH_PRIVATE_KEY}"
fi

# Check if the username variable is set
if [ ! -z "${SSH_USERNAME}" ]; then
    SSH_USERNAME="${SSH_USERNAME}@"
fi

# Check if either the deployment host or deployment path variables are not set
if [ -z "${DEPLOYMENT_HOST}" ] || [ -z "${DEPLOYMENT_PATH}" ]; then
    echo "required variable DEPLOYMENT_HOST is not set"
    exit 1
fi

tar -czf httpdocs.tgz -C public .
scp -o StrictHostKeyChecking=no ${SSH_PRIVATE_KEY} httpdocs.tgz ${SSH_USERNAME}${DEPLOYMENT_HOST}:/tmp/httpdocs.tgz
ssh -o StrictHostKeyChecking=no ${SSH_PRIVATE_KEY} ${SSH_USERNAME}${DEPLOYMENT_HOST} "DEPLOYMENT_PATH=$DEPLOYMENT_PATH bash" << 'EOF'
  cd ${DEPLOYMENT_PATH}
  DATAPATH=$(cat .env | grep "NGINX_DATA" | sed "s/NGINX_DATA=//g")
  rm -rf ${DATAPATH}/{*,.*}
  tar xf /tmp/httpdocs.tgz -C ${DATAPATH}
  docker compose restart
  rm -f /tmp/httpdocs.tgz
EOF
rm -f httpdocs.tgz