#!/usr/bin/env python3
from __future__ import annotations

import os
import shlex
import shutil
import signal
import subprocess
import tempfile
import time
from pathlib import Path

try:
    import tkinter as tk
    from tkinter import messagebox, ttk
except ImportError as exc:
    print(f"Missing dependency: {exc}")
    print("Install Tkinter with: sudo apt-get install python3-tk")
    raise SystemExit(1)


DEFAULT_LEFT_IP = "192.168.192.18"
DEFAULT_RIGHT_IP = "192.168.192.19"
DEFAULT_PORT = "15000"
TERMINAL_TITLE_PREFIX = "XR-RM Terminal - "
TOPIC_MONITOR_TITLE = "XR-RM Topic Monitor"
TOPIC_MONITOR_ACTION = "__xr_rm_topic_monitor__"
ROS_GRAPH_MONITOR_TITLE = "XR-RM ROS Graph Monitor"
ROS_GRAPH_MONITOR_ACTION = "__xr_rm_ros_graph_monitor__"

TOPIC_MONITORS = [
    ("Left Controller", "/xr/left_controller"),
    ("Right Controller", "/xr/right_controller"),
]

ROS_GRAPH_MONITORS = [
    ("ROS Topic List", "ros2 topic list"),
    ("ROS Node List", "ros2 node list"),
]

MODES = [
    "Simulation",
    "Left Arm",
    "Right Arm",
    "Dual Arm",
    "Diagnostics",
]


def _quote(value: str | Path) -> str:
    return shlex.quote(str(value))


def _config_quote(value: str) -> str:
    return '"' + value.replace("\\", "\\\\").replace('"', '\\"') + '"'


def _with_index(items: list[tuple[str, str]]) -> list[tuple[str, str]]:
    return [(f"{idx}. {title}", cmd) for idx, (title, cmd) in enumerate(items, start=1)]


def _find_workspace_root() -> Path:
    env_workspace = os.environ.get("XR_RM_WS")
    if env_workspace:
        return Path(env_workspace).expanduser().resolve()

    here = Path(__file__).resolve()
    for parent in (here.parent, *here.parents):
        if (parent / "install" / "setup.bash").exists() and (parent / "src").is_dir():
            return parent
        if parent.name == "src" and (parent / "xr_rm_bringup" / "package.xml").exists():
            return parent.parent
    return Path.cwd().resolve()


def _source_lines(workspace_root: Path) -> list[str]:
    ros_setup = Path("/opt/ros/humble/setup.bash")
    install_setup = workspace_root / "install" / "setup.bash"
    lines = [
        "set +e",
        f"cd {_quote(workspace_root)}",
    ]
    if ros_setup.exists():
        lines.append(f"source {_quote(ros_setup)}")
    else:
        lines.append("echo 'Warning: /opt/ros/humble/setup.bash was not found.'")

    lines.extend([
        (
            f"if [ -f {_quote(install_setup)} ]; then "
            f"source {_quote(install_setup)}; "
            "else echo 'Warning: workspace install/setup.bash was not found. Run colcon build first.'; fi"
        ),
        "echo",
    ])
    return lines


def _one_click_mock(arm: str, hand: str) -> str:
    return "\n".join([
        f"ros2 launch xr_rm_bringup arm_debug.launch.py arm:={arm} use_mock:=true &",
        "launch_pid=$!",
        "sleep 2",
        f"ros2 run xr_rm_input sample_udp_sender --hand {hand} --host 127.0.0.1 --port {DEFAULT_PORT} --seconds 20",
        "echo",
        "echo 'Sample sender finished. The launch process is still running in this terminal.'",
        "echo 'Press Ctrl-C here, or use the cleanup button in the launcher, to stop it.'",
        "wait \"$launch_pid\"",
    ])


def _diagnostic_commands() -> list[tuple[str, str]]:
    return [
        ("Open ROS Topic/Node List Monitor", ROS_GRAPH_MONITOR_ACTION),
    ]


def _topic_monitor_item() -> tuple[str, str]:
    return ("Open Controller Topic Monitor", TOPIC_MONITOR_ACTION)


def _finalize_items(
    items: list[tuple[str, str]],
    one_click: tuple[str, str] | None = None,
) -> list[tuple[str, str]]:
    final_items = items + _diagnostic_commands() + [_topic_monitor_item()]
    if one_click is not None:
        final_items.append(one_click)
    return _with_index(final_items)


def build_commands_by_mode(mode: str) -> list[tuple[str, str]]:
    if mode == "Simulation":
        items = [
            ("Left Arm Mock Launch", "ros2 launch xr_rm_bringup arm_debug.launch.py arm:=left use_mock:=true"),
            ("Right Arm Mock Launch", "ros2 launch xr_rm_bringup arm_debug.launch.py arm:=right use_mock:=true"),
            ("Dual Arm Mock Launch", "ros2 launch xr_rm_bringup arm_debug.launch.py arm:=both use_mock:=true"),
            (
                "Sample UDP Sender (Left, 10s)",
                f"ros2 run xr_rm_input sample_udp_sender --hand left --host 127.0.0.1 --port {DEFAULT_PORT} --seconds 10",
            ),
            (
                "Sample UDP Sender (Right, 10s)",
                f"ros2 run xr_rm_input sample_udp_sender --hand right --host 127.0.0.1 --port {DEFAULT_PORT} --seconds 10",
            ),
            (
                "Sample UDP Sender (Both, 10s)",
                f"ros2 run xr_rm_input sample_udp_sender --hand both --host 127.0.0.1 --port {DEFAULT_PORT} --seconds 10",
            ),
            ("One-Click Left Mock Demo", _one_click_mock("left", "left")),
            ("One-Click Right Mock Demo", _one_click_mock("right", "right")),
            ("One-Click Dual Mock Demo", _one_click_mock("both", "both")),
        ]
        one_click = None
    elif mode == "Left Arm":
        items = [
            ("Ping Left RM75", f"ping -c 4 {DEFAULT_LEFT_IP}"),
            (
                "Left Arm RealMan Launch",
                "ros2 launch xr_rm_bringup arm_debug.launch.py arm:=left use_mock:=false "
                f"left_robot_ip:={DEFAULT_LEFT_IP} "
                "move_to_initial_pose_on_connect:=false",
            ),
            (
                "Sample UDP Sender (Left, 10s)",
                f"ros2 run xr_rm_input sample_udp_sender --hand left --host 127.0.0.1 --port {DEFAULT_PORT} --seconds 10",
            ),
        ]
        one_click = None
    elif mode == "Right Arm":
        items = [
            ("Ping Right RM75", f"ping -c 4 {DEFAULT_RIGHT_IP}"),
            (
                "Right Arm RealMan Launch",
                "ros2 launch xr_rm_bringup arm_debug.launch.py arm:=right use_mock:=false "
                f"right_robot_ip:={DEFAULT_RIGHT_IP} "
                "move_to_initial_pose_on_connect:=false",
            ),
            (
                "Sample UDP Sender (Right, 10s)",
                f"ros2 run xr_rm_input sample_udp_sender --hand right --host 127.0.0.1 --port {DEFAULT_PORT} --seconds 10",
            ),
        ]
        one_click = None
    elif mode == "Dual Arm":
        items = [
            ("Ping Left RM75", f"ping -c 4 {DEFAULT_LEFT_IP}"),
            ("Ping Right RM75", f"ping -c 4 {DEFAULT_RIGHT_IP}"),
            (
                "Dual Arm RealMan Launch",
                "ros2 launch xr_rm_bringup arm_debug.launch.py arm:=both use_mock:=false "
                f"left_robot_ip:={DEFAULT_LEFT_IP} right_robot_ip:={DEFAULT_RIGHT_IP} "
                "move_to_initial_pose_on_connect:=false",
            ),
            (
                "Sample UDP Sender (Both, 10s)",
                f"ros2 run xr_rm_input sample_udp_sender --hand both --host 127.0.0.1 --port {DEFAULT_PORT} --seconds 10",
            ),
        ]
        one_click = None
    else:
        items = [
            ("ROS Doctor Report", "ros2 doctor --report"),
            ("XR-RM Bringup Prefix", "ros2 pkg prefix xr_rm_bringup"),
            ("XR-RM Input Prefix", "ros2 pkg prefix xr_rm_input"),
            ("XR-RM Teleop Prefix", "ros2 pkg prefix xr_rm_teleop"),
        ]
        one_click = None
    return _finalize_items(items, one_click)


class LauncherApp:
    def __init__(self, root: tk.Tk) -> None:
        self.root = root
        self.workspace_root = _find_workspace_root()
        self.current_commands: list[tuple[str, str]] = []

        self.root.title("XR-RM Teleop Launcher")
        self.root.geometry("760x640")
        self.root.minsize(640, 560)
        self.root.columnconfigure(0, weight=1)
        self.root.rowconfigure(0, weight=1)

        main_frame = ttk.Frame(root, padding=(10, 8, 10, 8))
        main_frame.grid(row=0, column=0, sticky="nsew")
        main_frame.columnconfigure(0, weight=1)
        main_frame.rowconfigure(2, weight=1)

        title_lbl = ttk.Label(main_frame, text="XR-RM Teleop Launcher", font=("Helvetica", 12, "bold"))
        title_lbl.grid(row=0, column=0, sticky="w")

        mode_frame = ttk.Frame(main_frame)
        mode_frame.grid(row=1, column=0, sticky="ew", pady=(8, 6))
        mode_frame.columnconfigure(1, weight=1)
        ttk.Label(mode_frame, text="Mode:", font=("Helvetica", 10)).grid(row=0, column=0, sticky="w", padx=(0, 6))
        self.mode_var = tk.StringVar(value=MODES[0])
        self.mode_combo = ttk.Combobox(
            mode_frame,
            textvariable=self.mode_var,
            values=MODES,
            width=24,
            state="readonly",
        )
        self.mode_combo.grid(row=0, column=1, sticky="ew")
        self.mode_combo.bind("<<ComboboxSelected>>", self.on_mode_changed)

        list_frame = ttk.Frame(main_frame)
        list_frame.grid(row=2, column=0, sticky="nsew")
        list_frame.columnconfigure(0, weight=1)
        list_frame.rowconfigure(0, weight=1)
        self.listbox = tk.Listbox(list_frame, selectmode=tk.SINGLE, font=("Courier", 10), height=8, width=1)
        self.listbox.grid(row=0, column=0, sticky="nsew")
        list_scroll = ttk.Scrollbar(list_frame, orient=tk.VERTICAL, command=self.listbox.yview)
        list_scroll.grid(row=0, column=1, sticky="ns")
        self.listbox.configure(yscrollcommand=list_scroll.set)
        self.listbox.bind("<Double-1>", self.run_command)
        self.listbox.bind("<<ListboxSelect>>", self.on_selection_changed)

        preview_label = ttk.Label(main_frame, text="Command Preview", anchor=tk.W, font=("Helvetica", 10, "bold"))
        preview_label.grid(row=3, column=0, sticky="w", pady=(8, 2))
        self.preview = tk.Text(main_frame, height=3, width=1, wrap=tk.WORD, font=("Courier", 9))
        self.preview.grid(row=4, column=0, sticky="ew")
        self.preview.configure(state=tk.DISABLED)

        button_frame = ttk.Frame(main_frame)
        button_frame.grid(row=5, column=0, sticky="ew", pady=(8, 0))
        for index in range(3):
            button_frame.columnconfigure(index, weight=1, uniform="actions")

        run_btn = tk.Button(
            button_frame,
            text="Run Selected",
            command=self.run_command,
            bg="#2e7d32",
            fg="white",
            font=("Helvetica", 10, "bold"),
            height=1,
        )
        run_btn.grid(row=0, column=0, sticky="ew", padx=(0, 5))

        check_btn = tk.Button(
            button_frame,
            text="Check Env",
            command=self.check_prerequisites,
            bg="#1976d2",
            fg="white",
            font=("Helvetica", 10, "bold"),
            height=1,
        )
        check_btn.grid(row=0, column=1, sticky="ew", padx=5)

        kill_btn = tk.Button(
            button_frame,
            text="Stop All",
            command=self.kill_launched_processes,
            bg="#c62828",
            fg="white",
            font=("Helvetica", 10, "bold"),
            height=1,
        )
        kill_btn.grid(row=0, column=2, sticky="ew", padx=(5, 0))

        self.status = tk.Label(root, text="Ready", bd=1, relief=tk.SUNKEN, anchor=tk.W)
        self.status.grid(row=1, column=0, sticky="ew")

        self.refresh_command_list()

    def refresh_command_list(self) -> None:
        self.current_commands = build_commands_by_mode(self.mode_var.get())
        self.listbox.delete(0, tk.END)
        for name, _ in self.current_commands:
            self.listbox.insert(tk.END, name)
        if self.current_commands:
            self.listbox.select_set(0)
        self.update_preview()

    def on_mode_changed(self, event=None) -> None:
        self.refresh_command_list()
        self.status.config(text=f"Mode: {self.mode_var.get()}")

    def on_selection_changed(self, event=None) -> None:
        self.update_preview()

    def selected_command(self) -> tuple[str, str] | None:
        selection = self.listbox.curselection()
        if not selection:
            return None
        return self.current_commands[selection[0]]

    def update_preview(self) -> None:
        selected = self.selected_command()
        text = selected[1] if selected else ""
        if text == TOPIC_MONITOR_ACTION:
            topics = ", ".join(topic for _title, topic in TOPIC_MONITORS)
            text = f"Open one Terminator window split into controller topic panes:\n{topics}"
        elif text == ROS_GRAPH_MONITOR_ACTION:
            text = "Open one Terminator window split into 2 horizontal panes:\nros2 topic list | ros2 node list"
        self.preview.configure(state=tk.NORMAL)
        self.preview.delete("1.0", tk.END)
        self.preview.insert(tk.END, text)
        self.preview.configure(state=tk.DISABLED)

    def build_terminal_script(self, title: str, command: str) -> str:
        window_title = TERMINAL_TITLE_PREFIX + title
        lines = _source_lines(self.workspace_root)
        lines.extend([
            "export XR_RM_LAUNCHER_SESSION=1",
            f"printf '\\033]0;%s\\007' {_quote(window_title)}",
            command,
            "exit_code=$?",
            "echo",
            "echo \"Command exited with code ${exit_code}.\"",
            "read -r -p 'Press Enter to close...'",
            "exit ${exit_code}",
        ])
        return "\n".join(lines)

    def terminal_command(self, title: str, script: str) -> list[str] | None:
        window_title = TERMINAL_TITLE_PREFIX + title
        if shutil.which("x-terminal-emulator"):
            return ["x-terminal-emulator", "--no-dbus", "--title", window_title, "-e", "bash", "-ic", script]
        if shutil.which("gnome-terminal"):
            return ["gnome-terminal", f"--title={window_title}", "--", "bash", "-ic", script]
        if shutil.which("konsole"):
            return ["konsole", "--new-tab", "-p", f"tabtitle={window_title}", "-e", "bash", "-ic", script]
        if shutil.which("xfce4-terminal"):
            return ["xfce4-terminal", "--title", window_title, "--command", f"bash -ic {_quote(script)}"]
        if shutil.which("xterm"):
            return ["xterm", "-T", window_title, "-e", "bash", "-ic", script]
        return None

    def run_command(self, event=None) -> None:
        selected = self.selected_command()
        if selected is None:
            messagebox.showwarning("No Selection", "Please select a command first.")
            return

        name, command = selected
        if command == TOPIC_MONITOR_ACTION:
            self.launch_topic_monitor()
            return
        if command == ROS_GRAPH_MONITOR_ACTION:
            self.launch_ros_graph_monitor()
            return

        terminal_cmd = self.terminal_command(name, self.build_terminal_script(name, command))
        if terminal_cmd is None:
            messagebox.showerror(
                "Terminal Not Found",
                "No supported terminal emulator was found. Install gnome-terminal, konsole, xfce4-terminal, or xterm.",
            )
            return

        try:
            subprocess.Popen(terminal_cmd, cwd=str(self.workspace_root))
            self.status.config(text=f"Launched: {name}")
        except Exception as exc:
            messagebox.showerror("Launch Failed", f"Failed to launch command:\n{exc}")
            self.status.config(text="Launch failed")

    def _ros_package_available(self, package: str) -> bool:
        script = "\n".join(_source_lines(self.workspace_root) + [f"ros2 pkg prefix {package} >/dev/null 2>&1"])
        try:
            result = subprocess.run(
                ["bash", "-lc", script],
                cwd=str(self.workspace_root),
                stdout=subprocess.DEVNULL,
                stderr=subprocess.DEVNULL,
                timeout=8,
                check=False,
            )
        except Exception:
            return False
        return result.returncode == 0

    def check_prerequisites(self) -> None:
        ok: list[str] = []
        warnings: list[str] = []
        errors: list[str] = []

        if Path("/opt/ros/humble/setup.bash").exists():
            ok.append("[OK] ROS2 Humble setup found.")
        else:
            errors.append("[MISS] /opt/ros/humble/setup.bash not found.")

        if (self.workspace_root / "src" / "xr_rm_bringup" / "package.xml").exists():
            ok.append(f"[OK] Workspace root: {self.workspace_root}")
        else:
            warnings.append(f"[WARN] Workspace root guess may be wrong: {self.workspace_root}")

        if (self.workspace_root / "install" / "setup.bash").exists():
            ok.append("[OK] Workspace install/setup.bash found.")
        else:
            warnings.append("[WARN] Workspace has not been built yet, or install/setup.bash is missing.")

        if self.terminal_command("test", "true") is not None:
            ok.append("[OK] Supported terminal emulator found.")
        else:
            errors.append("[MISS] No supported terminal emulator found.")

        if shutil.which("x-terminal-emulator"):
            ok.append("[OK] x-terminal-emulator found.")
        else:
            errors.append("[MISS] x-terminal-emulator not found. Split monitors require it.")

        terminal_target = self.x_terminal_target()
        if terminal_target == "terminator":
            ok.append("[OK] x-terminal-emulator uses Terminator split-layout support.")
        elif terminal_target:
            warnings.append(
                f"[WARN] x-terminal-emulator points to {terminal_target}. "
                "The split monitors are designed for Terminator."
            )
        else:
            warnings.append("[WARN] Could not identify x-terminal-emulator target.")

        for package in ("xr_rm_bringup", "xr_rm_input", "xr_rm_teleop"):
            if self._ros_package_available(package):
                ok.append(f"[OK] ROS package available: {package}")
            else:
                warnings.append(f"[WARN] ROS package not discoverable yet: {package}")

        try:
            import Robotic_Arm  # noqa: F401

            ok.append("[OK] Robotic_Arm Python package found for RealMan mode.")
        except ImportError:
            warnings.append("[WARN] Robotic_Arm Python package not found. Mock mode is still usable.")

        sections = []
        if errors:
            sections.append("Errors:\n" + "\n".join(errors))
        if warnings:
            sections.append("Warnings:\n" + "\n".join(warnings))
        if ok:
            sections.append("Passed:\n" + "\n".join(ok))

        message = "\n\n".join(sections) if sections else "No checks were run."
        if errors:
            self.show_text_dialog("Prerequisite Check", "Errors Found", message)
            self.status.config(text="Prerequisite check failed")
        elif warnings:
            self.show_text_dialog("Prerequisite Check", "Warnings Found", message)
            self.status.config(text="Prerequisite check passed with warnings")
        else:
            self.show_text_dialog("Prerequisite Check", "All Checks Passed", message)
            self.status.config(text="Prerequisite check passed")

    def show_text_dialog(self, title: str, heading: str, message: str) -> None:
        dialog = tk.Toplevel(self.root)
        dialog.title(title)
        dialog.geometry("760x520")
        dialog.minsize(620, 360)
        dialog.transient(self.root)
        dialog.grab_set()
        dialog.columnconfigure(0, weight=1)
        dialog.rowconfigure(0, weight=1)

        frame = ttk.Frame(dialog, padding=(12, 10, 12, 12))
        frame.grid(row=0, column=0, sticky="nsew")
        frame.columnconfigure(0, weight=1)
        frame.rowconfigure(1, weight=1)

        ttk.Label(frame, text=heading, font=("Helvetica", 12, "bold")).grid(row=0, column=0, sticky="w")

        text_frame = ttk.Frame(frame)
        text_frame.grid(row=1, column=0, sticky="nsew", pady=(8, 10))
        text_frame.columnconfigure(0, weight=1)
        text_frame.rowconfigure(0, weight=1)

        text = tk.Text(text_frame, width=88, height=22, wrap=tk.WORD, font=("Courier", 10))
        text.grid(row=0, column=0, sticky="nsew")
        y_scroll = ttk.Scrollbar(text_frame, orient=tk.VERTICAL, command=text.yview)
        y_scroll.grid(row=0, column=1, sticky="ns")
        text.configure(yscrollcommand=y_scroll.set)
        text.insert("1.0", message)
        text.configure(state=tk.DISABLED)

        ok_btn = ttk.Button(frame, text="OK", command=dialog.destroy)
        ok_btn.grid(row=2, column=0, sticky="e")
        ok_btn.focus_set()
        dialog.bind("<Escape>", lambda _event: dialog.destroy())
        dialog.bind("<Return>", lambda _event: dialog.destroy())

    @staticmethod
    def x_terminal_target() -> str:
        terminal = shutil.which("x-terminal-emulator")
        if terminal is None:
            return ""
        try:
            return Path(terminal).resolve().name
        except OSError:
            return Path(terminal).name

    def topic_pane_command(self, title: str, topic: str) -> str:
        pane_title = f"{TOPIC_MONITOR_TITLE} - {title}"
        lines = _source_lines(self.workspace_root)
        lines.extend([
            "export XR_RM_LAUNCHER_SESSION=1",
            f"printf '\\033]0;%s\\007' {_quote(pane_title)}",
            "clear",
            f"echo {_quote('=== ' + title + ' ===')}",
            f"echo {_quote('ros2 topic echo ' + topic)}",
            "echo",
            f"ros2 topic echo {topic}",
            "echo",
            "echo 'Topic echo stopped. This pane is left open for inspection.'",
            "exec bash",
        ])
        return "\n".join(lines)

    def ros_graph_pane_command(self, title: str, command: str) -> str:
        pane_title = f"{ROS_GRAPH_MONITOR_TITLE} - {title}"
        lines = _source_lines(self.workspace_root)
        lines.extend([
            "export XR_RM_LAUNCHER_SESSION=1",
            f"printf '\\033]0;%s\\007' {_quote(pane_title)}",
            "trap 'echo; echo Monitor stopped.; exec bash' INT",
            "while true; do",
            "  clear",
            f"  echo {_quote('=== ' + title + ' ===')}",
            f"  echo {_quote(command + '  (refreshes every 1s)')}",
            "  date '+%H:%M:%S'",
            "  echo",
            f"  {command}",
            "  sleep 1",
            "done",
        ])
        return "\n".join(lines)

    def write_topic_monitor_script(self, title: str, topic: str) -> Path:
        script_file = tempfile.NamedTemporaryFile(
            mode="w",
            prefix="xr_rm_topic_monitor_",
            suffix=".sh",
            delete=False,
            encoding="utf-8",
        )
        with script_file:
            script_file.write(self.topic_pane_command(title, topic))
            script_file.write("\n")
        os.chmod(script_file.name, 0o755)
        return Path(script_file.name)

    def write_ros_graph_monitor_script(self, title: str, command: str) -> Path:
        script_file = tempfile.NamedTemporaryFile(
            mode="w",
            prefix="xr_rm_ros_graph_monitor_",
            suffix=".sh",
            delete=False,
            encoding="utf-8",
        )
        with script_file:
            script_file.write(self.ros_graph_pane_command(title, command))
            script_file.write("\n")
        os.chmod(script_file.name, 0o755)
        return Path(script_file.name)

    def topic_monitor_rect(self) -> tuple[int, int, int, int]:
        screen_width = max(self.root.winfo_screenwidth(), 1)
        screen_height = max(self.root.winfo_screenheight(), 1)
        width = min(screen_width - 80, max(900, int(screen_width * 0.75)))
        height = min(screen_height - 80, max(560, int(screen_height * (2.0 / 3.0))))
        width = max(width, min(screen_width, 640))
        height = max(height, min(screen_height, 420))
        left = max((screen_width - width) // 2, 0)
        top = max((screen_height - height) // 2, 0)
        return width, height, left, top

    def write_topic_monitor_config(self) -> Path:
        width, height, left, top = self.topic_monitor_rect()
        left_script, right_script = [
            self.write_topic_monitor_script(title, topic)
            for title, topic in TOPIC_MONITORS
        ]
        layout_name = "xr_rm_topic_monitor"
        config_text = "\n".join([
            "[global_config]",
            "  suppress_multiple_term_dialog = True",
            "[keybindings]",
            "[profiles]",
            "  [[default]]",
            "    scrollback_infinite = True",
            "[layouts]",
            f"  [[{layout_name}]]",
            "    [[[window0]]]",
            "      type = Window",
            "      parent = \"\"",
            f"      title = {_config_quote(TOPIC_MONITOR_TITLE)}",
            f"      position = {_config_quote(f'{left}:{top}')}",
            f"      size = {width}, {height}",
            "      maximised = False",
            "      fullscreen = False",
            "    [[[split0]]]",
            "      type = HPaned",
            "      parent = window0",
            "      order = 0",
            "      ratio = 0.5",
            "    [[[terminal_left]]]",
            "      type = Terminal",
            "      parent = split0",
            "      order = 0",
            f"      command = {_config_quote('bash ' + str(left_script))}",
            "    [[[terminal_right]]]",
            "      type = Terminal",
            "      parent = split0",
            "      order = 1",
            f"      command = {_config_quote('bash ' + str(right_script))}",
            "[plugins]",
            "",
        ])
        config_file = tempfile.NamedTemporaryFile(
            mode="w",
            prefix="xr_rm_topic_monitor_",
            suffix=".conf",
            delete=False,
            encoding="utf-8",
        )
        with config_file:
            config_file.write(config_text)
        return Path(config_file.name)

    def write_ros_graph_monitor_config(self) -> Path:
        width, height, left, top = self.topic_monitor_rect()
        topic_script, node_script = [
            self.write_ros_graph_monitor_script(title, command)
            for title, command in ROS_GRAPH_MONITORS
        ]
        layout_name = "xr_rm_ros_graph_monitor"
        config_text = "\n".join([
            "[global_config]",
            "  suppress_multiple_term_dialog = True",
            "[keybindings]",
            "[profiles]",
            "  [[default]]",
            "    scrollback_infinite = True",
            "[layouts]",
            f"  [[{layout_name}]]",
            "    [[[window0]]]",
            "      type = Window",
            "      parent = \"\"",
            f"      title = {_config_quote(ROS_GRAPH_MONITOR_TITLE)}",
            f"      position = {_config_quote(f'{left}:{top}')}",
            f"      size = {width}, {height}",
            "      maximised = False",
            "      fullscreen = False",
            "    [[[split0]]]",
            "      type = HPaned",
            "      parent = window0",
            "      order = 0",
            "      ratio = 0.5",
            "    [[[terminal_topic_list]]]",
            "      type = Terminal",
            "      parent = split0",
            "      order = 0",
            f"      command = {_config_quote('bash ' + str(topic_script))}",
            "    [[[terminal_node_list]]]",
            "      type = Terminal",
            "      parent = split0",
            "      order = 1",
            f"      command = {_config_quote('bash ' + str(node_script))}",
            "[plugins]",
            "",
        ])
        config_file = tempfile.NamedTemporaryFile(
            mode="w",
            prefix="xr_rm_ros_graph_monitor_",
            suffix=".conf",
            delete=False,
            encoding="utf-8",
        )
        with config_file:
            config_file.write(config_text)
        return Path(config_file.name)

    def topic_monitor_geometry(self) -> str:
        width, height, left, top = self.topic_monitor_rect()
        return f"{width}x{height}+{left}+{top}"

    def launch_topic_monitor(self) -> None:
        terminal = shutil.which("x-terminal-emulator")
        if terminal is None:
            messagebox.showerror(
                "Terminal Not Found",
                "x-terminal-emulator was not found. Install a terminal emulator to use the topic monitor.",
            )
            return

        if self.x_terminal_target() != "terminator":
            messagebox.showwarning(
                "Topic Monitor",
                "The controller topic monitor uses Terminator's split-layout support. "
                "Please set x-terminal-emulator to Terminator.",
            )
            return

        config_path = self.write_topic_monitor_config()
        command = [
            terminal,
            "--no-dbus",
            "--title",
            TOPIC_MONITOR_TITLE,
            "--config",
            str(config_path),
            "--layout",
            "xr_rm_topic_monitor",
        ]
        try:
            subprocess.Popen(command, cwd=str(self.workspace_root))
            self.status.config(text="Opened Terminator controller topic monitor.")
        except Exception as exc:
            messagebox.showerror("Topic Monitor Failed", f"Failed to launch topic monitor:\n{exc}")
            self.status.config(text="Topic monitor launch failed")

    def launch_ros_graph_monitor(self) -> None:
        terminal = shutil.which("x-terminal-emulator")
        if terminal is None:
            messagebox.showerror(
                "Terminal Not Found",
                "x-terminal-emulator was not found. Install a terminal emulator to use the ROS graph monitor.",
            )
            return

        if self.x_terminal_target() != "terminator":
            messagebox.showwarning(
                "ROS Graph Monitor",
                "The ROS graph monitor uses Terminator's split-layout support. "
                "Please set x-terminal-emulator to Terminator.",
            )
            return

        config_path = self.write_ros_graph_monitor_config()
        command = [
            terminal,
            "--no-dbus",
            "--title",
            ROS_GRAPH_MONITOR_TITLE,
            "--config",
            str(config_path),
            "--layout",
            "xr_rm_ros_graph_monitor",
        ]
        try:
            subprocess.Popen(command, cwd=str(self.workspace_root))
            self.status.config(text="Opened Terminator ROS graph monitor.")
        except Exception as exc:
            messagebox.showerror("ROS Graph Monitor Failed", f"Failed to launch ROS graph monitor:\n{exc}")
            self.status.config(text="ROS graph monitor launch failed")

    def close_related_terminal_windows(self) -> int:
        title_patterns = (TERMINAL_TITLE_PREFIX, TOPIC_MONITOR_TITLE, ROS_GRAPH_MONITOR_TITLE)
        closed = 0

        if shutil.which("wmctrl"):
            try:
                output = subprocess.check_output(["wmctrl", "-l"], text=True)
            except Exception:
                output = ""
            for line in output.splitlines():
                parts = line.split(None, 3)
                if len(parts) < 4:
                    continue
                window_id, title = parts[0], parts[3]
                if any(pattern in title for pattern in title_patterns):
                    subprocess.run(["wmctrl", "-ic", window_id], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
                    closed += 1

        if closed == 0 and shutil.which("xdotool"):
            for pattern in title_patterns:
                try:
                    output = subprocess.check_output(["xdotool", "search", "--name", pattern], text=True)
                except subprocess.CalledProcessError:
                    continue
                except Exception:
                    continue
                for window_id in output.splitlines():
                    subprocess.run(["xdotool", "windowclose", window_id], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
                    closed += 1

        return closed

    def kill_launched_processes(self) -> None:
        confirm = messagebox.askyesno(
            "Confirm Stop",
            "Stop XR-RM launcher terminals, topic monitors, and ROS nodes started from this workspace?",
        )
        if not confirm:
            return

        patterns = [
            "ros2 launch xr_rm_bringup",
            "ros2 run xr_rm_input",
            "ros2 run xr_rm_teleop",
            "XR_RM_LAUNCHER_SESSION=1",
            TERMINAL_TITLE_PREFIX,
            TOPIC_MONITOR_TITLE,
            ROS_GRAPH_MONITOR_TITLE,
            "xr_rm_topic_monitor_",
            "xr_rm_ros_graph_monitor_",
            "udp_controller_receiver",
            "sample_udp_sender",
            "single_arm_velocity_teleop",
            "ros2 topic echo /xr/left_controller",
            "ros2 topic echo /xr/right_controller",
            "ros2 topic list",
            "ros2 node list",
        ]
        protected = {os.getpid(), os.getppid()}
        killed: set[int] = set()

        for pattern in patterns:
            try:
                output = subprocess.check_output(["pgrep", "-f", pattern], text=True)
            except subprocess.CalledProcessError:
                continue
            except Exception as exc:
                print(f"Failed to search process pattern {pattern!r}: {exc}")
                continue

            for pid_text in output.splitlines():
                try:
                    pid = int(pid_text)
                except ValueError:
                    continue
                if pid in protected or pid in killed:
                    continue
                try:
                    os.kill(pid, signal.SIGTERM)
                    killed.add(pid)
                except OSError:
                    pass

        time.sleep(0.3)
        closed_windows = self.close_related_terminal_windows()
        self.status.config(
            text=f"Stop requested: {len(killed)} matching processes, {closed_windows} terminal windows."
        )
        messagebox.showinfo(
            "Stop Complete",
            "Stop requested for:\n"
            f"- {len(killed)} matching processes, including launcher terminal wrappers\n"
            f"- {closed_windows} related terminal windows",
        )


def main() -> None:
    root = tk.Tk()
    LauncherApp(root)
    root.mainloop()


if __name__ == "__main__":
    main()