#!/usr/bin/env bash
# uninstall-macos.sh — remove ahfail from macOS (manual/script install)
# For Homebrew installs: brew uninstall ahfail, then run this to clean up PAM.
set -euo pipefail

INSTALL_DIR="/usr/local/lib/ahfail"
BOLD=$(tput bold 2>/dev/null || true)
RESET=$(tput sgr0 2>/dev/null || true)

step() { echo "${BOLD}==> $*${RESET}"; }

[[ "$(uname)" == "Darwin" ]] || { echo "This script is for macOS only." >&2; exit 1; }

# ── 1. Remove PAM config line ─────────────────────────────────────────────────
step "Removing ahfail from PAM configuration..."
removed_pam=0
for pam_file in /etc/pam.d/screensaverui /etc/pam.d/screensaver; do
    if [[ -f "$pam_file" ]] && grep -q "ahfail" "$pam_file"; then
        echo "  Patching ${pam_file}..."
        sudo sed -i '' '/ahfail/d' "$pam_file"
        removed_pam=1
    fi
done
[[ $removed_pam -eq 0 ]] && echo "  No ahfail PAM entries found."

# ── 2. Remove binaries ────────────────────────────────────────────────────────
step "Removing binaries..."
if [[ -d "$INSTALL_DIR" ]]; then
    sudo rm -rf "$INSTALL_DIR"
    echo "  Removed ${INSTALL_DIR}."
else
    echo "  ${INSTALL_DIR} not found — skipping."
fi

echo ""
echo "${BOLD}Done.${RESET}"