#/usr/bin/env bash
set -e

# Check if the source server variable has already been set externally
if [ -z "${DEPLOY_SOURCE}" ]; then
  # Check for the source server (with default)
  DEPLOY_SOURCE_FILE="${HOME}/.deploy_source"
  DEPLOY_SOURCE="https://git.bjphoster.com/deployments"
  if [ -f "${DEPLOY_SOURCE_FILE}" ]; then
    . "${DEPLOY_SOURCE_FILE}"
  fi
fi

# Check if the deploy position variable has already been set externally
if [ -z "${DEPLOY_DESTINATION}" ]; then
  # Check for the deploy position (with default)
  DEPLOY_DESTINATION_FILE="${HOME}/.deploy_destination"
  DEPLOY_DESTINATION="/opt"
  if [ -f "${DEPLOY_DESTINATION_FILE}" ]; then
    . "${DEPLOY_DESTINATION_FILE}"
  fi
fi

# Check if the correct usage is respected
if [ $# -lt 2 ]; then
  echo "Usage: $0 <service> <service name> [branch/tag]"
  echo
  echo "Current settings:"
  echo "- \$DEPLOY_SOURCE      · ${DEPLOY_SOURCE}"
  echo "- \$DEPLOY_DESTINATION · ${DEPLOY_DESTINATION}"
  exit
fi

echo "deploying ..."
git clone "${DEPLOY_SOURCE}/${1}" "${DEPLOY_DESTINATION}/${2}"

if [ $# -eq 3 ]; then
  pushd "${DEPLOY_DESTINATION}/${2}"
  git checkout "${3}"
  popd
fi