#!/bin/bash

# omarchy:summary=Restart the Omarchy shell
# omarchy:examples=omarchy restart shell

omarchy_root="${OMARCHY_PATH:-/usr/share/omarchy}"
if [[ ! -f $omarchy_root/shell/shell.qml && -f /usr/share/omarchy/shell/shell.qml ]]; then
  omarchy_root=/usr/share/omarchy
fi

CONFIG_DIR="$omarchy_root/shell"
[[ -f $CONFIG_DIR/shell.qml ]] || { echo "Omarchy shell config not found: $CONFIG_DIR" >&2; exit 1; }

export OMARCHY_PATH="$omarchy_root"
export PATH="$omarchy_root/bin:/usr/local/bin:/usr/bin:/bin:$PATH"

omarchy_shell_bin=/usr/bin/omarchy-shell
[[ -x $omarchy_shell_bin ]] || omarchy_shell_bin=omarchy-shell

# Allow running from outside the session (e.g. over ssh) by deriving the
# Hyprland instance signature from the newest instance runtime dir.
if [[ -z ${HYPRLAND_INSTANCE_SIGNATURE:-} ]]; then
  hypr_dir=$(find "${XDG_RUNTIME_DIR:-/run/user/$UID}/hypr" -mindepth 1 -maxdepth 1 -type d -printf '%T@ %p\n' 2>/dev/null | sort -n | tail -n 1 | cut -d' ' -f2-)
  [[ -n $hypr_dir ]] && export HYPRLAND_INSTANCE_SIGNATURE=${hypr_dir##*/}
fi

hyprland_session_locked() {
  local monitors

  if monitors=$(hyprctl -j monitors 2>/dev/null); then
    [[ $monitors == *'"LOCK"'* ]] && return 0
  fi

  monitors=$(hyprctl monitors 2>/dev/null) || return 1
  [[ $monitors == *"session lock"* ]]
}

shell_quote() {
  printf "'"
  printf "%s" "$1" | sed "s/'/'\\\\''/g"
  printf "'"
}

lua_quote() {
  local value=$1
  value=${value//\\/\\\\}
  value=${value//\"/\\\"}
  value=${value//$'\n'/\\n}
  printf '"%s"' "$value"
}

launch_shell() {
  local launch_command

  launch_command="env OMARCHY_PATH=$(shell_quote "$omarchy_root") PATH=$(shell_quote "$PATH") quickshell -n -p $(shell_quote "$CONFIG_DIR")"

  # hyprctl dispatch exits 0 even on Lua errors, so check for "ok" output.
  if [[ -n ${HYPRLAND_INSTANCE_SIGNATURE:-} ]] && omarchy-cmd-present hyprctl &&
    [[ $(hyprctl dispatch "hl.dsp.exec_cmd($(lua_quote "$launch_command"))" 2>/dev/null) == ok ]]; then
    return 0
  fi

  setsid quickshell -n -p "$CONFIG_DIR" >/dev/null 2>&1 &
}

restore_hyprland_session_lock() {
  local attempt

  for (( attempt = 0; attempt < 50; attempt++ )); do
    if "$omarchy_shell_bin" shell ping >/dev/null 2>&1; then
      "$omarchy_shell_bin" lock lock >/dev/null 2>&1 || true
      return 0
    fi
    sleep 0.1
  done

  echo "Omarchy shell restarted while Hyprland was session-locked, but lock IPC did not become ready." >&2
}

hyprland_was_session_locked=0
hyprland_session_locked && hyprland_was_session_locked=1

if [[ $("$omarchy_shell_bin" lock isLocked 2>/dev/null || true) == "true" ]]; then
  echo "Refusing to restart Omarchy shell while the session is locked." >&2
  exit 1
fi

pkill -x quickshell 2>/dev/null || true
sleep 0.2
launch_shell

if (( hyprland_was_session_locked )); then
  restore_hyprland_session_lock
fi