#!/usr/bin/env bash
# uninstall-linux-x11.sh — remove ahfail PAM module from X11 screen lockers
# Run from the repository root (uses ninja uninstall if builddir is present).
set -euo pipefail

BOLD=$(tput bold 2>/dev/null || true)
RESET=$(tput sgr0 2>/dev/null || true)

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

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

# ── 1. Remove PAM config lines ────────────────────────────────────────────────
step "Removing ahfail from PAM service files..."
removed_pam=0
for pam_file in /etc/pam.d/i3lock /etc/pam.d/xscreensaver /etc/pam.d/lightdm \
                /etc/pam.d/gdm /etc/pam.d/sddm /etc/pam.d/gtklock; 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 in common service files."

# ── 2. Remove installed files ─────────────────────────────────────────────────
step "Removing installed files..."

# Prefer meson's own uninstall if the builddir is still present
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
BUILDDIR="${SCRIPT_DIR}/../builddir"
if [[ -f "${BUILDDIR}/build.ninja" ]]; then
    echo "  Running meson uninstall..."
    sudo ninja -C "$BUILDDIR" uninstall
else
    echo "  builddir not found — removing known paths manually..."
    for dir in /usr/lib/ahfail /usr/local/lib/ahfail \
                /usr/lib64/ahfail /usr/lib/x86_64-linux-gnu/ahfail; do
        if [[ -d "$dir" ]]; then
            sudo rm -rf "$dir"
            echo "  Removed ${dir}."
        fi
    done
    for f in /usr/lib/gtklock/ahfail-module.so \
              /usr/local/lib/gtklock/ahfail-module.so; do
        if [[ -f "$f" ]]; then
            sudo rm -f "$f"
            echo "  Removed ${f}."
        fi
    done
fi

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