commands

#!/usr/bin/env bash

set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
source "$(dirname $0)/../common/functions"

main() {
  case "$1" in
    slack:set)
      slack_set "$2" "$3"
      ;;
    slack:clear)
      slack_clear "$2"
      ;;
    slack:get)
      slack_get "$2"
      ;;
    help)
      slack_usage
      ;;
  esac
}

slack_usage() {
  cat >&2 <<USAGE
    slack:set <app> <webhook>, Enable Slack notifications for app.
    slack:clear <app>, Disable Slack notifications for app.
    slack:get <app>, Print Slack notification settings for app.
USAGE
}

slack_set() {
  local app="$1"
  local webhook="$2"

  if [[ -z "${app}" ]] || [[ -z "${webhook}" ]]; then
    slack_usage
    exit 1
  fi

  verify_app_name "${app}"

  dokku_log_info1 "Enabling Slack notifications for ${app}"
  echo "${webhook}" > "${DOKKU_ROOT}/${app}/SLACK_WEBHOOK"
}

slack_clear() {
  local app="$1"

  if [[ -z "${app}" ]]; then
    slack_usage
    exit 1
  fi

  verify_app_name "${app}"

  dokku_log_info1 "Disabling Slack notifications for ${app}"
  rm -f "${DOKKU_ROOT}/${app}/SLACK_WEBHOOK"
}

slack_get() {
  local app="$1"

  if [[ -z "${app}" ]]; then
    slack_usage
    exit 1
  fi

  verify_app_name "${app}"

  local file="${DOKKU_ROOT}/${app}/SLACK_WEBHOOK"
  if [[ -s "${file}" ]]; then
    dokku_log_info1 "Slack notifications set for ${app} (webhook: $(cat "${file}"))"
  else
    dokku_log_info1 "Slack notifications cleared for ${app}"
  fi
}

main $@