#!/bin/bash
# Removes what install.sh set up: the systemd service and the venv it
# created. The project folder itself (whatever you SFTP'd over) and any
# config.json with your settings are left alone -- delete manually if you
# want those gone too.
#
# Does NOT touch SPI/I2C config.txt settings or re-install/re-enable
# anything else -- Paperwall doesn't depend on or manage other software.
#
# Usage: sudo bash uninstall.sh

set -euo pipefail

if [ "$EUID" -ne 0 ]; then
  echo "Run as root (sudo bash uninstall.sh)" >&2
  exit 1
fi

SOURCE="${BASH_SOURCE[0]}"
while [ -h "$SOURCE" ]; do
  DIR=$(cd -P "$(dirname "$SOURCE")" >/dev/null 2>&1 && pwd)
  SOURCE=$(readlink "$SOURCE")
  [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"
done
APP_DIR=$(cd -P "$(dirname "$SOURCE")" >/dev/null 2>&1 && pwd)

SERVICE_NAME="paperwall.service"

echo "==> Stopping and disabling $SERVICE_NAME"
systemctl disable --now "$SERVICE_NAME" 2>/dev/null || echo "  (not running/installed, skipping)"

echo "==> Removing systemd unit"
rm -f "/etc/systemd/system/$SERVICE_NAME"
systemctl daemon-reload

echo "==> Removing virtual environment ($APP_DIR/venv)"
rm -rf "$APP_DIR/venv"

echo
echo "==> Paperwall service and venv removed."
echo "    Project files at $APP_DIR are untouched -- delete the folder yourself if you want it fully gone."
echo "    If InkyPi was stopped by install.sh and you want it back:"
echo "        sudo systemctl enable --now inkypi.service"