#!/usr/bin/env bash
#
# Remove the CD webhook receiver from this host.
#
# Stops and deletes the user service. Deliberately leaves the secrets file and
# the deploy logs in place -- removing a receiver is not a reason to destroy
# credentials or the record of what was deployed. Pass --purge to remove them.

set -Eeuo pipefail

readonly CONFIG_DIR="${XDG_CONFIG_HOME:-${HOME}/.config}/cd-webhook"
readonly STATE_DIR="${XDG_STATE_HOME:-${HOME}/.local/state}/cd-webhook"
readonly SYSTEMD_DIR="${HOME}/.config/systemd/user"
readonly UNIT_NAME="cd-webhook.service"

Purge=0
[[ "${1:-}" == "--purge" ]] && Purge=1

echo "Stopping ${UNIT_NAME} ..."
systemctl --user disable --now "${UNIT_NAME}" 2>/dev/null || true
rm -f "${SYSTEMD_DIR}/${UNIT_NAME}"
systemctl --user daemon-reload

# The rendered hooks file holds the webhook secrets, so it goes regardless; it
# is regenerated from targets.json plus secrets.env on the next install.
rm -f "${CONFIG_DIR}/hooks.json"

if [[ ${Purge} -eq 1 ]]; then
    echo "Purging secrets and deploy logs ..."
    rm -rf "${CONFIG_DIR}" "${STATE_DIR}"
else
    echo "Kept ${CONFIG_DIR}/secrets.env and deploy logs in ${STATE_DIR}"
    echo "  (re-run with --purge to remove them too)"
fi

echo "Done."