#!/bin/bash

# omarchy:summary=Remove fingerprint authentication from sudo, polkit, and lock screen
# omarchy:requires-sudo=true

set -e

# Resolve the invoking account before changing authentication or packages.
if (( EUID == 0 )) && [[ -v SUDO_UID ]]; then
  if [[ ! $SUDO_UID =~ ^[0-9]+$ ]]; then
    echo "Cannot identify the invoking fingerprint user" >&2
    exit 1
  fi
  fingerprint_user=$(/usr/bin/id -nu "+$SUDO_UID") || exit 1
else
  fingerprint_user=$(/usr/bin/id -un) || exit 1
fi

if [[ -z $fingerprint_user || $fingerprint_user == "." || $fingerprint_user == ".." || $fingerprint_user == */* ]]; then
  echo "Unsafe fingerprint user name" >&2
  exit 1
fi


remove_pam_config() {
  # Remove from sudo (both the fingerprint module and its clamshell gate)
  if grep -Eq 'pam_fprintd\.so|omarchy-hw-laptop-closed' /etc/pam.d/sudo; then
    echo "Removing fingerprint authentication from sudo..."
    sudo sed -i -e '/pam_fprintd\.so/d' -e '/omarchy-hw-laptop-closed/d' /etc/pam.d/sudo
  fi

  # Remove from polkit (both the fingerprint module and its clamshell gate)
  if [[ -f /etc/pam.d/polkit-1 ]] && grep -Eq 'pam_fprintd\.so|omarchy-hw-laptop-closed' /etc/pam.d/polkit-1; then
    echo "Removing fingerprint authentication from polkit..."
    sudo sed -i -e '/pam_fprintd\.so/d' -e '/omarchy-hw-laptop-closed/d' /etc/pam.d/polkit-1
  fi
}

remove_lock_fingerprint_pam() {
  if [[ -f /etc/pam.d/omarchy-lock-fingerprint ]]; then
    echo "Removing lock screen fingerprint authentication..."
    sudo rm -f /etc/pam.d/omarchy-lock-fingerprint
  fi
}

remove_resume_hook() {
  if [[ -f /usr/lib/systemd/system-sleep/fprintd-resume ]]; then
    echo "Removing fingerprint resume hook..."
    sudo rm -f /usr/lib/systemd/system-sleep/fprintd-resume
  fi
  if [[ -f /etc/systemd/system/fprintd.service.d/10-stop-timeout.conf ]]; then
    echo "Removing fprintd stop timeout bound..."
    sudo rm -f /etc/systemd/system/fprintd.service.d/10-stop-timeout.conf
    sudo rmdir --ignore-fail-on-non-empty /etc/systemd/system/fprintd.service.d
    sudo systemctl daemon-reload
  fi
}


echo -e "\e[32mRemoving fingerprint scanner from authentication.\n\e[0m"

remove_pam_config
remove_lock_fingerprint_pam
remove_resume_hook

sudo rm -rf -- "/var/lib/fprint/$fingerprint_user"

echo "Removing fingerprint packages..."
omarchy-pkg-drop fprintd libfprint libfprint-git

echo -e "\e[32mFingerprint authentication and $fingerprint_user's local saved fingerprints have been removed.\e[0m"