#!/usr/bin/env bash

set -euo pipefail

function run() {
  VERSION="${AVIARY_VERSION:-1.5.0}"
  INSTALL_PATH=/var/lib
  AV_PATH=$INSTALL_PATH/aviary/av
  RELEASE_URL=https://github.com/frameable/aviary.sh/archive/refs/tags/v${VERSION}.tar.gz
  INVENTORY_GIT_URL=${1:-""}
  CONFIG_FILE=${INSTALL_PATH}/aviary/config
  NO_CRON="${AVIARY_NO_CRON:-false}"

  # check for git dependency
  if ! /usr/bin/which git > /dev/null; then
    echo "Please install git and try again"
    exit 1
  fi

  if [[ -z "$INVENTORY_GIT_URL" ]]; then
    echo "Installing with no inventory git url; set later in $CONFIG_FILE"
  fi

  if [[ -e /var/lib/aviary ]]; then
    echo "Found existing installation at $INSTALL_PATH; exiting"
    exit 1
  fi

  echo Installing to ${INSTALL_PATH}...
  mkdir -p ${INSTALL_PATH}/aviary
  curl -sL $RELEASE_URL | tar --strip-components=1 -C ${INSTALL_PATH}/aviary -xz
  ln -sf /var/lib/aviary/av /usr/bin/av
  mkdir -p ${INSTALL_PATH}/aviary/inventory

  if [[ ! -z "$INVENTORY_GIT_URL" ]]; then
    echo "inventory_git_url=$INVENTORY_GIT_URL" >> $CONFIG_FILE
  fi

  if [[ "$NO_CRON" != "true" ]]; then
    echo Adding entry to /etc/crontab...
    echo "$(cat /etc/crontab | grep -v $AV_PATH)" > /etc/crontab
    echo "* * * * * root $AV_PATH directive >> /var/log/aviary-directive.log 2>&1" >> /etc/crontab
    echo "$(( RANDOM % 60 )) * * * * root $AV_PATH apply >> /var/log/aviary.log 2>&1" >> /etc/crontab
  fi

  echo Done
}

run  # Wrap in function to ensure entire script is downloaded.