#!/usr/bin/env python3
# encoding:utf8
"""NetworkManager command line dmenu script.

To add new connections or enable/disable networking requires policykit
permissions setup per:
https://wiki.archlinux.org/index.php/NetworkManager#Set_up_PolicyKit_permissions

OR running the script as root

Add dmenu options and default terminal if desired to
~/.config/networkmanager-dmenu/config.ini

To specify a custom config file location, use:
--config /path/to/config.ini          (command line argument)
OR
NM_DMENU_CONFIG=/path/to/config.ini   (environment variable)

The command line argument takes precedence over the environment variable.
"""

from os.path import basename, expanduser, isfile
from shutil import which
from time import sleep
import argparse
import configparser
import locale
import os
import pathlib
import shlex
import struct
import subprocess
import sys
import uuid

import gi

gi.require_version("NM", "1.0")
from gi.repository import GLib, NM  # noqa pylint: disable=wrong-import-position

ENV = os.environ.copy()
ENC = locale.getpreferredencoding()


class SafeConfigParser(configparser.ConfigParser):
    """Safely handle interpolation errors."""

    def get(self, section, option, *args, **kwargs):
        try:
            return super().get(section, option, *args, **kwargs)
        except configparser.InterpolationError:
            print(
                f"Warning: Interpolation error in [{section}] {option}. "
                f"Use %% instead of % for literal percent signs.",
                file=sys.stderr,
            )
            # Get the raw value without interpolation
            return super().get(section, option, raw=True, *args, **kwargs)


CONF = SafeConfigParser()

# Default config paths
default_config_dir = expanduser("~/.config/networkmanager-dmenu")
default_config_path = os.path.join(default_config_dir, "config.ini")


def generate_default_config(launcher="dmenu", terminal="xterm"):
    """Generate a minimal default config with the given launcher and terminal.

    Args:
        launcher: The launcher program to use (dmenu, rofi, etc.)
        terminal: The terminal program to use

    Returns:
        str: Complete config file content
    """
    return f"""[dmenu]
dmenu_command = {launcher}
active_chars = ==
highlight = True
highlight_fg =
highlight_bg =
highlight_bold = True
compact = False
pinentry =
wifi_icons = 󰤯󰤟󰤢󰤥󰤨
format = {{name:<{{max_len_name}}s}}  {{sec:<{{max_len_sec}}s}} {{icon:>4}}
list_saved = False
prompt = Networks

[dmenu_passphrase]
obscure = False
obscure_color = #222222

[pinentry]
description = Get network password
prompt = Password:

[editor]
terminal = {terminal}
gui_if_available = True
gui = nm-connection-editor

[nmdm]
rescan_delay = 5
"""


def is_installed(cmd):
    """Check if a utility is installed"""
    return which(cmd) is not None


# List of supported launchers
SUPPORTED_LAUNCHERS = [
    "bemenu",
    "dmenu",
    "fuzzel",
    "rofi",
    "tofi",
    "walker",
    "wmenu",
    "wofi",
    "yofi",
]
# List of common terminals
COMMON_TERMINALS = [
    "alacritty",
    "foot",
    "footclient",
    "gnome-terminal",
    "kitty",
    "konsole",
    "terminator",
    "urxvt",
    "xfce4-terminal",
    "xterm",
]


def detect_installed_launchers():
    """Detect which supported launchers are installed on the system"""
    return [
        launcher for launcher in SUPPORTED_LAUNCHERS if is_installed(launcher)
    ]


def detect_installed_terminals():
    """Detect which common terminals are installed on the system"""
    return [terminal for terminal in COMMON_TERMINALS if is_installed(terminal)]


def prompt_command_line(prompt, options):
    """Prompt the user for a selection via command line"""
    print(f"\n{prompt}")
    for i, option in enumerate(options, 1):
        print(f"{i}. {option}")

    while True:
        try:
            choice = input("Enter your choice (number): ")
            idx = int(choice) - 1
            if 0 <= idx < len(options):
                return options[idx]
            print("Invalid selection. Please try again.")
        except ValueError:
            print("Please enter a number.")


def setup_initial_config():
    """Interactive setup to create initial config with user preferences

    Returns:
        bool: True if configuration was successfully created, False otherwise
    """
    print("\nWelcome to networkmanager-dmenu!")
    print("Setting up initial configuration...")

    # Create config directory if it doesn't exist
    if not os.path.exists(default_config_dir):
        try:
            os.makedirs(default_config_dir)
        except OSError as e:
            print(f"Error creating config directory: {e}", file=sys.stderr)
            return False

    # Detect installed launchers
    installed_launchers = detect_installed_launchers()
    if not installed_launchers:
        print("No supported launchers (dmenu, rofi, etc.) found.")
        print("Please install one of the supported launchers and try again.")
        return False

    # Prompt user to choose launcher
    chosen_launcher = None
    if len(installed_launchers) == 1:
        chosen_launcher = installed_launchers[0]
        print(f"Found launcher: {chosen_launcher}")
    else:
        print("Multiple launchers detected.")
        chosen_launcher = prompt_command_line(
            "Which launcher would you like to use?", installed_launchers
        )

    # Detect installed terminals
    installed_terminals = detect_installed_terminals()
    chosen_terminal = None

    if not installed_terminals:
        print("No common terminals detected.")
        custom_terminal = input("Enter the name of your terminal: ")
        if custom_terminal.strip():
            chosen_terminal = custom_terminal.strip()
    elif len(installed_terminals) == 1:
        chosen_terminal = installed_terminals[0]
        print(f"Found terminal: {chosen_terminal}")
    else:
        print("Multiple terminals detected.")
        chosen_terminal = prompt_command_line(
            "Which terminal would you like to use?", installed_terminals
        )

    # Create config file with user's preferences
    try:
        # Generate minimal config with chosen launcher and terminal
        config_content = generate_default_config(
            launcher=chosen_launcher,
            terminal=chosen_terminal or "xterm",  # Use xterm as fallback
        )

        # Write the config
        with open(default_config_path, "w") as dst:
            dst.write(config_content)

        print(f"\nConfiguration file created at: {default_config_path}")
        print("You can customize it further by editing this file directly.")
        return True

    except Exception as e:
        print(f"Error creating config file: {e}", file=sys.stderr)
        return False


# Parse command-line arguments for config flag
def parse_args():
    parser = argparse.ArgumentParser(description="NetworkManager dmenu")
    parser.add_argument(
        "--config", dest="config_path", help="Path to configuration file"
    )
    # Parse only the --config argument, leaving the rest for dmenu
    # This allows us to maintain compatibility with existing command line flags
    args, remaining = parser.parse_known_args()
    # Put the remaining args back into sys.argv for cli_args() to use
    sys.argv[1:] = remaining
    return args


args = parse_args()

# Config file priority:
# 1. Command line --config flag
# 2. NM_DMENU_CONFIG environment variable
# 3. Default path (~/.config/networkmanager-dmenu/config.ini)
if args.config_path:
    # Command line flag takes precedence if provided
    if isfile(args.config_path):
        config_path = args.config_path
    else:
        # Use default if specified file doesn't exist
        config_path = default_config_path
else:
    # Check environment variable
    env_config_path = os.getenv("NM_DMENU_CONFIG")
    if env_config_path and isfile(env_config_path):
        config_path = env_config_path
    else:
        # Fall back to default path
        config_path = default_config_path

# Check if this is first run (no config file exists)
first_run = not os.path.exists(config_path)
if first_run:
    print("No configuration file found. Starting initial setup...")
    if setup_initial_config():
        print("Initial setup complete. Starting networkmanager-dmenu...")
    else:
        print("Initial setup failed. Using default settings.")

# Read the configuration file
CONF.read(config_path)


def cli_args(args):
    """Remove certain flags from a list of arguments

    Arguments: List of strings

    Returns: List of CLI arguments with `prompt_*args` removed if present
    """
    # List of prompt flags to remove (both short and long forms)
    prompts_args = ["-p", "--prompt"]
    prompts_no_args = ["-d", "-dmenu", "--dmenu"]

    i = 0
    while i < len(args):
        # Check for arguments with values
        if args[i] in prompts_args:
            del args[i]
            if i < len(args):  # Delete arg value, but not beyond list length
                del args[i]
        # Check for standalone args
        elif args[i] in prompts_no_args:
            del args[i]
        # Check for -p with no space before arguments (-ptext)
        elif args[i].startswith("-p") and len(args[i]) > 2:
            del args[i]
        # For all other flags, keep them to override config
        else:
            i += 1

    return args


def run_dmenu(command, input_text=None):
    """Run a dmenu command and handle errors properly.

    Args:
        command: list of command arguments
        input_text: optional string to pass as stdin

    Returns:
        subprocess.CompletedProcess result

    Raises:
        SystemExit: if the dmenu command fails with an error
    """
    result = subprocess.run(
        command,
        capture_output=True,
        check=False,
        input=input_text,
        encoding=ENC,
        env=ENV,
    )
    if result.returncode != 0 and result.stderr:
        error_msg = f"dmenu command failed: {result.stderr.strip()}"
        print(error_msg, file=sys.stderr)
        notify(error_msg, urgency="critical")
        sys.exit(result.returncode)
    return result


def dmenu_pass(command, color):
    """Check if dmenu passphrase patch is applied and return the correct command
    line arg list

    Args: command - string
          color - obscure color string
    Returns: list or None

    """
    if command != "dmenu":
        return None
    try:
        # Check for dmenu password patch
        dm_patch = (
            b"P"
            in subprocess.run(
                ["dmenu", "-h"], capture_output=True, check=False
            ).stderr
        )
    except FileNotFoundError:
        dm_patch = False
    return ["-P"] if dm_patch else ["-nb", color, "-nf", color]


def dmenu_cmd(prompt, active_lines=None):
    """Parse config.ini for menu options

    Args: args - prompt: prompt to show
                 active_lines: list of line numbers to tag as active
    Returns: command invocation (as a list of strings) for example
                ["dmenu", "-p", "<prompt>", "-i"]

    """
    # Create command string
    commands = {
        "bemenu": ["-p", str(prompt)],
        "dmenu": ["-p", str(prompt)],
        "fuzzel": ["--dmenu", "--placeholder", str(prompt)],
        "rofi": ["-dmenu", "-p", str(prompt)],
        "tofi": ["--require-match=false", f"--prompt-text={str(prompt)}: "],
        "walker": ["-d", "-p", str(prompt), "-k", "-n", "-f"],
        "wmenu": ["-p", str(prompt)],
        "wofi": ["--dmenu", "-p", str(prompt)],
        "yofi": ["--prompt", str(prompt)],
    }
    command = shlex.split(CONF.get("dmenu", "dmenu_command", fallback="dmenu"))
    command = cli_args(command)  # Strip unnecessary extra prompt/dmenu flags
    cmd_base = basename(command[0])
    command.extend(cli_args(sys.argv[1:]))
    command.extend(commands.get(cmd_base, []))
    # Highlighting
    highlight = CONF.getboolean("dmenu", "highlight", fallback=False)
    if highlight is True:
        # Rofi
        if cmd_base == "rofi" and active_lines:
            command.extend(["-a", ",".join([str(num) for num in active_lines])])
        # Wofi
        if cmd_base == "wofi" and active_lines:
            # add '-q' to prevent tag name and properties of pango markup from searchable
            command.extend(["-m", "-q"])
    # Passphrase prompts
    obscure = CONF.getboolean("dmenu_passphrase", "obscure", fallback=False)
    if prompt == "Passphrase" and obscure is True:
        obscure_color = CONF.get(
            "dmenu_passphrase", "obscure_color", fallback="#222222"
        )
        pass_prompts = {
            "bemenu": ["-x", "indicator"],
            "dmenu": dmenu_pass(cmd_base, obscure_color),
            "fuzzel": ["--password"],
            "rofi": ["-password"],
            "tofi": ["--hide-input=true", "--hidden-character=*"],
            "walker": ["-y", "-n"],
            "wmenu": ["-P"],
            "wofi": ["-P"],
            "yofi": ["--password"],
        }
        command.extend(pass_prompts.get(cmd_base, []))

    if cmd_base == "yofi":
        command.extend(["dialog"])
    return command


def choose_adapter(client):
    """If there is more than one WiFi adapter installed, ask which one to use"""
    devices = client.get_devices()
    devices = [i for i in devices if i.get_device_type() == NM.DeviceType.WIFI]
    if not devices:
        return None
    if len(devices) == 1:
        return devices[0]
    device_names = "\n".join([d.get_iface() for d in devices])
    sel = run_dmenu(dmenu_cmd("CHOOSE ADAPTER:"), device_names).stdout
    if not sel.strip():
        sys.exit()
    devices = [i for i in devices if i.get_iface() == sel.strip()]
    if len(devices) != 1:
        raise ValueError(f"Selection was ambiguous: '{str(sel.strip())}'")
    return devices[0]


def is_running(cmd):
    try:
        subprocess.check_output(["pidof", cmd])
    except subprocess.CalledProcessError:
        return False
    else:
        return True


def bluetooth_get_enabled():
    """Check if bluetooth is enabled. Try bluetoothctl first, then rfkill.

    Returns None if no bluetooth device was found.
    """
    if is_installed("bluetoothctl") and is_running("bluetoothd"):
        # Times out in 2 seconds, otherwise bluetoothctl will hang if bluetooth
        # service isn't running.
        try:
            res = subprocess.run(
                ["bluetoothctl <<< show"],
                shell=True,
                timeout=2,
                capture_output=True,
                text=True,
            )
            return "Powered: yes" in res.stdout
        except subprocess.TimeoutExpired:
            pass
    # See https://www.kernel.org/doc/Documentation/ABI/stable/sysfs-class-rfkill
    for path in pathlib.Path("/sys/class/rfkill/").glob("rfkill*"):
        if (path / "type").read_text().strip() == "bluetooth":
            return (path / "soft").read_text().strip() == "0"
    return None


def create_other_actions(client):
    """Return list of other actions that can be taken"""
    networking_enabled = client.networking_get_enabled()
    networking_action = "Disable" if networking_enabled else "Enable"

    wifi_enabled = client.wireless_get_enabled()
    wifi_action = "Disable" if wifi_enabled else "Enable"

    bluetooth_enabled = bluetooth_get_enabled()
    bluetooth_action = "Disable" if bluetooth_enabled else "Enable"

    actions = [
        Action(f"{wifi_action} WiFi", toggle_wifi, not wifi_enabled),
        Action(
            f"{networking_action} Networking",
            toggle_networking,
            not networking_enabled,
        ),
    ]
    if bluetooth_enabled is not None:
        actions.append(
            Action(
                f"{bluetooth_action} Bluetooth",
                toggle_bluetooth,
                not bluetooth_enabled,
            )
        )
    actions += [
        Action("Launch Connection Manager", launch_connection_editor),
        Action("Delete a Connection", delete_connection),
    ]
    if wifi_enabled:
        actions.append(Action("Rescan WiFi Networks", rescan_wifi))
        actions.append(Action("Show WiFi password", show_wifi_password))
    return actions


def rescan_wifi():
    """
    Rescan WiFi Access Points
    """
    delay = CONF.getint("nmdm", "rescan_delay", fallback=5)
    for dev in CLIENT.get_devices():
        if gi.repository.NM.DeviceWifi is type(dev):
            try:
                dev.request_scan_async(None, rescan_cb, None)
                LOOP.run()
                sleep(delay)
                notify("WiFi scan complete")
                main()
            except gi.repository.GLib.Error as err:
                # Too frequent rescan error
                notify("WiFi rescan failed", urgency="critical")
                if not err.code == 6:  # pylint: disable=no-member
                    raise err


def rescan_cb(dev, res, _):
    """Callback for rescan_wifi. Just for notifications"""
    if dev.request_scan_finish(res) is True:
        notify("WiFi scan running...")
    else:
        notify("WiFi scan failed", urgency="critical")
    LOOP.quit()


def ssid_to_utf8(nm_ap):
    """Convert binary ssid to utf-8"""
    ssid = nm_ap.get_ssid()
    if not ssid:
        return ""
    ret = NM.utils_ssid_to_utf8(ssid.get_data())
    return ret


def prompt_saved(saved_cons):
    """Prompt for a saved connection."""
    actions = create_saved_actions(saved_cons)
    sel = get_selection(actions)
    sel()


def ap_security(nm_ap):
    """Parse the security flags to return a string with 'WPA2', etc."""
    flags = nm_ap.get_flags()
    wpa_flags = nm_ap.get_wpa_flags()
    rsn_flags = nm_ap.get_rsn_flags()
    sec_str = ""
    if (
        (flags & getattr(NM, "80211ApFlags").PRIVACY)
        and (wpa_flags == 0)
        and (rsn_flags == 0)
    ):
        sec_str = " WEP"
    if wpa_flags:
        sec_str = " WPA1"
    if rsn_flags & getattr(NM, "80211ApSecurityFlags").KEY_MGMT_PSK:
        sec_str += " WPA2"
    if rsn_flags & getattr(NM, "80211ApSecurityFlags").KEY_MGMT_SAE:
        sec_str += " WPA3"
    if (wpa_flags & getattr(NM, "80211ApSecurityFlags").KEY_MGMT_802_1X) or (
        rsn_flags & getattr(NM, "80211ApSecurityFlags").KEY_MGMT_802_1X
    ):
        sec_str += " 802.1X"
    if (wpa_flags & getattr(NM, "80211ApSecurityFlags").KEY_MGMT_OWE) or (
        rsn_flags & getattr(NM, "80211ApSecurityFlags").KEY_MGMT_OWE
    ):
        sec_str += " OWE"

    # If there is no security use "--"
    if sec_str == "":
        sec_str = "--"
    return sec_str.lstrip()


class Action:  # pylint: disable=too-few-public-methods
    """Helper class to execute functions from a string variable"""

    def __init__(self, name, func, args=None, active=False):
        self.name = name
        self.func = func
        self.is_active = active
        if args is None:
            self.args = None
        elif isinstance(args, list):
            self.args = args
        else:
            self.args = [args]

    def __str__(self):
        return self.name

    def __call__(self):
        if self.args is None:
            self.func()
        else:
            self.func(*self.args)


def conn_matches_adapter(conn, adapter):
    """Return True if the connection is applicable for the given adapter.

    There seem to be two ways for a connection specify what interface it belongs
    to:

    - By setting 'mac-address' in [wifi] to the adapter's MAC
    - By setting 'interface-name` in [connection] to the adapter's name.

    Depending on how the connection was added, it seems like either
    'mac-address', 'interface-name' or neither of both is set.
    """
    # [wifi] mac-address
    setting_wireless = conn.get_setting_wireless()
    mac = setting_wireless.get_mac_address()
    if mac is not None:
        return mac == adapter.get_permanent_hw_address()

    # [connection] interface-name
    setting_connection = conn.get_setting_connection()
    interface = setting_connection.get_interface_name()
    if interface is not None:
        return interface == adapter.get_iface()

    # Neither is set, let's assume this connection is for multiple/all adapters.
    return True


def process_ap(nm_ap, is_active, adapter):
    """Activate/Deactivate a connection and get password if required"""
    if is_active:
        CLIENT.deactivate_connection_async(nm_ap, None, deactivate_cb, nm_ap)
        LOOP.run()
    else:
        conns_cur = [
            i
            for i in CONNS
            if i.get_setting_wireless() is not None
            and conn_matches_adapter(i, adapter)
        ]
        con = nm_ap.filter_connections(conns_cur)
        if len(con) > 1:
            raise ValueError("There are multiple connections possible")

        if len(con) == 1:
            CLIENT.activate_connection_async(
                con[0], adapter, nm_ap.get_path(), None, activate_cb, nm_ap
            )
            LOOP.run()
        else:
            if ap_security(nm_ap) != "--":
                password = get_passphrase()
            else:
                password = ""
            set_new_connection(nm_ap, password, adapter)


def activate_cb(dev, res, data):
    """Notification if activate connection completed successfully"""
    try:
        conn = dev.activate_connection_finish(res)
    except GLib.Error:
        conn = None
    if conn is not None:
        notify(f"Activated {conn.get_id()}")
    else:
        notify(f"Problem activating {data.get_id()}", urgency="critical")
    LOOP.quit()


def deactivate_cb(dev, res, data):
    """Notification if deactivate connection completed successfully"""
    if dev.deactivate_connection_finish(res) is True:
        notify(f"Deactivated {data.get_id()}")
    else:
        notify(f"Problem deactivating {data.get_id()}", urgency="critical")
    LOOP.quit()


def process_vpngsm(con, activate):
    """Activate/deactive VPN or GSM connections"""
    if activate:
        CLIENT.activate_connection_async(
            con, None, None, None, activate_cb, con
        )
    else:
        CLIENT.deactivate_connection_async(con, None, deactivate_cb, con)
    LOOP.run()


def strength_bars(signal_strength):
    bars = NM.utils_wifi_strength_bars(signal_strength)
    wifi_chars = CONF.get("dmenu", "wifi_chars", fallback="")
    if wifi_chars:
        bars = "".join([wifi_chars[i] for i, j in enumerate(bars) if j == "*"])
    return " " * (len(wifi_chars) - len(bars)) + bars


def strength_icon(signal_strength):
    wifi_icons = CONF.get("dmenu", "wifi_icons", fallback="")
    if wifi_icons:
        return wifi_icons[round(signal_strength / 100 * (len(wifi_icons) - 1))]
    return ""


def create_ap_actions(aps, active_ap, active_connection, adapter):  # noqa pylint: disable=too-many-locals,line-too-long
    """For each AP in a list, create the string and its attached function
    (activate/deactivate)

    """
    active_ap_bssid = active_ap.get_bssid() if active_ap is not None else ""

    names = [ssid_to_utf8(ap) for ap in aps]
    max_len_name = max([len(name) for name in names]) if names else 0
    secs = [ap_security(ap) for ap in aps]
    max_len_sec = max([len(sec) for sec in secs]) if secs else 0

    ap_actions = []

    if CONF.getboolean("dmenu", "compact", fallback=False):
        format = CONF.get("dmenu", "format", fallback="{name}  {sec}  {bars}")
    else:
        format = CONF.get(
            "dmenu",
            "format",
            fallback="{name:<{max_len_name}s}  {sec:<{max_len_sec}s} {bars:>4}",
        )

    for nm_ap, name, sec in zip(aps, names, secs):
        is_active = nm_ap.get_bssid() == active_ap_bssid
        signal_strength = nm_ap.get_strength()
        bars = strength_bars(signal_strength)
        icon = strength_icon(signal_strength)
        action_name = format.format(
            name=name,
            sec=sec,
            signal=signal_strength,
            bars=bars,
            icon=icon,
            max_len_name=max_len_name,
            max_len_sec=max_len_sec,
        )
        if is_active:
            ap_actions.append(
                Action(
                    action_name,
                    process_ap,
                    [active_connection, True, adapter],
                    active=True,
                )
            )
        else:
            ap_actions.append(
                Action(action_name, process_ap, [nm_ap, False, adapter])
            )
    return ap_actions


def create_hotspot_actions(hotspots, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) for NetworkManager Hotspots.

    """
    active_hotspot = [
        i
        for i in active
        if i.get_connection_type() == "802-11-wireless"
        and i.get_connection().get_setting_wireless().get_mode() == "ap"
    ]
    return _create_vpngsm_actions(hotspots, active_hotspot, "Hotspot")


def create_vpn_actions(vpns, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) for VPN connections.

    """
    active_vpns = [i for i in active if i.get_vpn()]
    return _create_vpngsm_actions(vpns, active_vpns, "VPN")


def create_vlan_actions(vlans, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) for VLAN connections.

    """
    active_vlans = [i for i in active if "vlan" == i.get_connection_type()]
    return _create_vpngsm_actions(vlans, active_vlans, "VLAN")


def create_wireguard_actions(wgs, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) for Wireguard connections.

    """
    active_wgs = [i for i in active if i.get_connection_type() == "wireguard"]
    return _create_vpngsm_actions(wgs, active_wgs, "Wireguard")


def create_eth_actions(eths, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) for Ethernet connections.

    """
    active_eths = [i for i in active if "ethernet" in i.get_connection_type()]
    return _create_vpngsm_actions(eths, active_eths, "Eth")


def create_gsm_actions(gsms, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) GSM connections."""
    active_gsms = [
        i
        for i in active
        if i.get_connection() is not None
        and i.get_connection().is_type(NM.SETTING_GSM_SETTING_NAME)
    ]
    return _create_vpngsm_actions(gsms, active_gsms, "GSM")


def create_blue_actions(blues, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) Bluetooth connections."""
    active_blues = [
        i
        for i in active
        if i.get_connection() is not None
        and i.get_connection().is_type(NM.SETTING_BLUETOOTH_SETTING_NAME)
    ]
    return _create_vpngsm_actions(blues, active_blues, "Bluetooth")


def create_saved_actions(saved):
    """Create the list of strings to display with associated function
    (activate/deactivate) for VPN connections.

    """
    return _create_vpngsm_actions(saved, [], "SAVED")


def _create_vpngsm_actions(cons, active_cons, label):
    active_con_ids = [a.get_id() for a in active_cons]
    actions = []
    for con in cons:
        is_active = con.get_id() in active_con_ids
        try:
            # Get hotspot ssid
            if con.get_setting_wireless().get_mode() == "ap":
                hotspot = f" '{ssid_to_utf8(con.get_setting_wireless())}'"
            else:
                hotspot = ""
        except AttributeError:
            hotspot = ""
        action_name = f"{con.get_id()}{hotspot}:{label}"
        if is_active:
            active_connection = [
                a for a in active_cons if a.get_id() == con.get_id()
            ]
            if len(active_connection) != 1:
                raise ValueError(
                    f"Multiple active connections match {con.get_id()}"
                )
            active_connection = active_connection[0]

            actions.append(
                Action(
                    action_name,
                    process_vpngsm,
                    [active_connection, False],
                    active=True,
                )
            )
        else:
            actions.append(Action(action_name, process_vpngsm, [con, True]))
    return actions


def create_wwan_actions(client):
    """Create WWWAN actions"""
    wwan_enabled = client.wwan_get_enabled()
    wwan_action = "Disable" if wwan_enabled else "Enable"
    return [Action(f"{wwan_action} WWAN", toggle_wwan, not wwan_enabled)]


def combine_actions(
    eths, aps, vlans, vpns, wgs, gsms, blues, wwan, hotspots, others, saved
):
    # pylint: disable=too-many-arguments
    """Combine all given actions into a list of actions.

    Args: args - eths: list of Actions
                 aps: list of Actions
                 vpns: list of Actions
                 gsms: list of Actions
                 blues: list of Actions
                 wwan: list of Actions
                 hotspots: list of Actions
                 others: list of Actions
    """
    compact = CONF.getboolean("dmenu", "compact", fallback=False)
    empty_action = [Action("", None)] if not compact else []
    all_actions = []
    all_actions += eths + empty_action if eths else []
    all_actions += aps + empty_action if aps else []
    all_actions += vlans + empty_action if vlans else []
    all_actions += vpns + empty_action if vpns else []
    all_actions += wgs + empty_action if wgs else []
    all_actions += gsms + empty_action if (gsms and wwan) else []
    all_actions += blues + empty_action if blues else []
    all_actions += wwan + empty_action if wwan else []
    all_actions += hotspots + empty_action if hotspots else []
    all_actions += others + empty_action if others else []
    all_actions += saved + empty_action if saved else []
    return all_actions


def get_wofi_highlight_markup(action):
    highlight_fg = CONF.get("dmenu", "highlight_fg", fallback="")
    highlight_bg = CONF.get("dmenu", "highlight_bg", fallback="")
    highlight_bold = CONF.getboolean("dmenu", "highlight_bold", fallback=True)

    style = ""
    if highlight_fg:
        style += f'foreground="{highlight_fg}" '
    if highlight_bg:
        style += f'background="{highlight_bg}" '
    if highlight_bold:
        style += 'weight="bold" '

    return f"<span {style}>" + str(action) + "</span>"


def get_selection(all_actions):
    """Spawn dmenu for selection and execute the associated action."""
    command = shlex.split(CONF.get("dmenu", "dmenu_command", fallback="dmenu"))
    cmd_base = basename(command[0])
    active_chars = CONF.get("dmenu", "active_chars", fallback="==")
    highlight = CONF.getboolean("dmenu", "highlight", fallback=False)
    inp = []

    if highlight is True and cmd_base == "rofi":
        inp = [str(action) for action in all_actions]
    elif highlight is True and cmd_base == "wofi":
        inp = [
            get_wofi_highlight_markup(action)
            if action.is_active
            else str(action)
            for action in all_actions
        ]
    else:
        inp = [
            (active_chars if action.is_active else " " * len(active_chars))
            + " "
            + str(action)
            for action in all_actions
        ]
    active_lines = [
        index for index, action in enumerate(all_actions) if action.is_active
    ]

    prompt = CONF.get("dmenu", "prompt", fallback="Networks")
    command = dmenu_cmd(f"{prompt} ", active_lines=active_lines)
    sel = run_dmenu(command, "\n".join(inp)).stdout

    if not sel.rstrip():
        sys.exit()

    if highlight is True and cmd_base == "rofi":
        action = [i for i in all_actions if str(i).strip() == sel.strip()]
    elif highlight is True and cmd_base == "wofi":
        action = [
            i
            for i in all_actions
            if str(i).strip() == sel.strip()
            or get_wofi_highlight_markup(i) == sel.strip()
        ]
    else:
        action = [
            i
            for i in all_actions
            if (
                (str(i).strip() == str(sel.strip()) and not i.is_active)
                or (
                    active_chars + " " + str(i) == str(sel.rstrip("\n"))
                    and i.is_active
                )
            )
        ]
    if len(action) != 1:
        raise ValueError(f"Selection was ambiguous: '{str(sel.strip())}'")
    return action[0]


def toggle_networking(enable):
    """Enable/disable networking

    Args: enable - boolean

    """
    toggle = GLib.Variant.new_tuple(GLib.Variant.new_boolean(enable))
    try:
        CLIENT.dbus_call(
            NM.DBUS_PATH,
            NM.DBUS_INTERFACE,
            "Enable",
            toggle,
            None,
            -1,
            None,
            None,
            None,
        )
    except AttributeError:
        # Workaround for older versions of python-gobject
        CLIENT.networking_set_enabled(enable)
    notify(f"Networking {'enabled' if enable is True else 'disabled'}")


def toggle_wifi(enable):
    """Enable/disable WiFi

    Args: enable - boolean

    """
    toggle = GLib.Variant.new_boolean(enable)
    try:
        CLIENT.dbus_set_property(
            NM.DBUS_PATH,
            NM.DBUS_INTERFACE,
            "WirelessEnabled",
            toggle,
            -1,
            None,
            None,
            None,
        )
    except AttributeError:
        # Workaround for older versions of python-gobject
        CLIENT.wireless_set_enabled(enable)
    notify(f"WiFi {'enabled' if enable is True else 'disabled'}")


def toggle_wwan(enable):
    """Enable/disable WWAN

    Args: enable - boolean

    """
    toggle = GLib.Variant.new_boolean(enable)
    try:
        CLIENT.dbus_set_property(
            NM.DBUS_PATH,
            NM.DBUS_INTERFACE,
            "WwanEnabled",
            toggle,
            -1,
            None,
            None,
            None,
        )
    except AttributeError:
        # Workaround for older versions of python-gobject
        CLIENT.wwan_set_enabled(enable)
    notify(f"Wwan {'enabled' if enable is True else 'disabled'}")


def toggle_bluetooth(enable):
    """Enable/disable Bluetooth

    Try bluetoothctl first, then drop to rfkill if it's not installed or
    bluetooth service isn't running.

    Args: enable - boolean

    References:
    https://github.com/blueman-project/blueman/blob/master/blueman/plugins/mechanism/RfKill.py
    https://www.kernel.org/doc/html/latest/driver-api/rfkill.html
    https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/include/uapi/linux/rfkill.h?h=v5.8.9

    """
    if is_installed("bluetoothctl") and is_running("bluetoothd"):
        # Times out in 2 seconds, otherwise bluetoothctl will hang if bluetooth
        # service isn't running.
        try:
            _ = subprocess.run(
                ["bluetoothctl", "power", "on" if enable is True else "off"],
                timeout=2,
                capture_output=True,
            )
        except subprocess.TimeoutExpired:
            pass
    if bluetooth_get_enabled() != enable:
        # Now try using rfkill
        type_bluetooth = 2
        op_change_all = 3
        idx = 0
        soft_state = 0 if enable else 1
        hard_state = 0

        data = struct.pack(
            "IBBBB", idx, type_bluetooth, op_change_all, soft_state, hard_state
        )

        try:
            with open("/dev/rfkill", "r+b", buffering=0) as rff:
                rff.write(data)
        except PermissionError:
            notify(
                "Lacking permission to write to /dev/rfkill.",
                "Check README for configuration options.",
                urgency="critical",
            )
    sleep(5)  # Needs a delay to ensure state has changed
    notify(f"Bluetooth {'enabled' if bluetooth_get_enabled() else 'disabled'}")


def launch_connection_editor():
    """Launch nmtui or the gui nm-connection-editor"""
    terminal = shlex.split(CONF.get("editor", "terminal", fallback="xterm"))
    gui_if_available = CONF.getboolean(
        "editor", "gui_if_available", fallback=True
    )
    gui = CONF.get("editor", "gui", fallback="nm-connection-editor")
    if gui_if_available is True:
        if is_installed(gui):
            subprocess.run(gui, check=False)
            return
    if is_installed("nmtui"):
        subprocess.run(terminal + ["-e", "nmtui"], check=False)
        return
    notify("No network connection editor installed", urgency="critical")


def show_wifi_password():
    """Run `nmcli device wifi show-password` for current connection"""
    terminal = shlex.split(CONF.get("editor", "terminal", fallback="xterm"))
    cmd = shlex.split(CONF.get("dmenu_passphrase", "show_pass", fallback=""))
    if cmd and is_installed(cmd[0]):
        subprocess.run(cmd, check=False)
    elif is_installed(terminal[0]):
        fallback = terminal + [
            "-e",
            "bash",
            "-c",
            "nmcli device wifi show-password; read -n1 -p 'Press any key to close...'",
        ]
        subprocess.run(fallback, check=False)
    else:
        notify("`terminal` and/or `show_pass` not configured. See README.")


def get_passphrase():
    """Get a password

    Returns: string

    """
    pinentry = CONF.get("dmenu", "pinentry", fallback=None)
    if pinentry:
        description = CONF.get(
            "pinentry", "description", fallback="Get network password"
        )
        prompt = CONF.get("pinentry", "prompt", fallback="Password: ")
        pin = ""
        out = subprocess.run(
            pinentry,
            capture_output=True,
            check=False,
            encoding=ENC,
            input=f"setdesc {description}\nsetprompt {prompt}\ngetpin\n",
        ).stdout
        if out:
            res = [i for i in out.split("\n") if i.startswith("D ")]
            if res and res[0].startswith("D "):
                pin = res[0].split("D ")[1]
        return pin
    return run_dmenu(dmenu_cmd("Passphrase"), "").stdout


def delete_connection():
    """Display list of NM connections and delete the selected one"""
    conn_acts = [
        Action(i.get_id(), i.delete_async, args=[None, delete_cb, None])
        for i in CONNS
    ]
    conn_names = "\n".join([str(i) for i in conn_acts])
    sel = run_dmenu(dmenu_cmd("CHOOSE CONNECTION TO DELETE:"), conn_names).stdout
    if not sel.strip():
        sys.exit()
    action = [i for i in conn_acts if str(i) == sel.rstrip("\n")]
    if len(action) != 1:
        raise ValueError(f"Selection was ambiguous: {str(sel)}")
    action[0]()
    LOOP.run()


def delete_cb(dev, res, _):
    """Notification if delete completed successfully"""
    if dev.delete_finish(res) is True:
        notify(f"Deleted {dev.get_id()}")
    else:
        notify(f"Problem deleting {dev.get_id()}", urgency="critical")
    LOOP.quit()


def set_new_connection(nm_ap, nm_pw, adapter):
    """Setup a new NetworkManager connection

    Args: ap - NM.AccessPoint
          pw - string

    """
    nm_pw = str(nm_pw).strip()
    profile = create_wifi_profile(nm_ap, nm_pw, adapter)
    CLIENT.add_and_activate_connection_async(
        profile, adapter, nm_ap.get_path(), None, verify_conn, profile
    )
    LOOP.run()


def create_wifi_profile(nm_ap, password, adapter):
    # From https://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/examples/python/gi/add_connection.py
    # and https://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/examples/python/dbus/add-wifi-psk-connection.py
    """Create the NM profile given the AP and passphrase"""
    ap_sec = ap_security(nm_ap)
    profile = NM.SimpleConnection.new()

    s_con = NM.SettingConnection.new()
    s_con.set_property(NM.SETTING_CONNECTION_ID, ssid_to_utf8(nm_ap))
    s_con.set_property(NM.SETTING_CONNECTION_UUID, str(uuid.uuid4()))
    s_con.set_property(NM.SETTING_CONNECTION_TYPE, "802-11-wireless")
    profile.add_setting(s_con)

    s_wifi = NM.SettingWireless.new()
    s_wifi.set_property(NM.SETTING_WIRELESS_SSID, nm_ap.get_ssid())
    s_wifi.set_property(NM.SETTING_WIRELESS_MODE, "infrastructure")
    s_wifi.set_property(
        NM.SETTING_WIRELESS_MAC_ADDRESS, adapter.get_permanent_hw_address()
    )
    profile.add_setting(s_wifi)

    s_ip4 = NM.SettingIP4Config.new()
    s_ip4.set_property(NM.SETTING_IP_CONFIG_METHOD, "auto")
    profile.add_setting(s_ip4)

    s_ip6 = NM.SettingIP6Config.new()
    s_ip6.set_property(NM.SETTING_IP_CONFIG_METHOD, "auto")
    profile.add_setting(s_ip6)

    if ap_sec != "--":
        s_wifi_sec = NM.SettingWirelessSecurity.new()
        if "WPA" in ap_sec:
            if "WPA3" in ap_sec:
                s_wifi_sec.set_property(
                    NM.SETTING_WIRELESS_SECURITY_KEY_MGMT, "sae"
                )
            else:
                s_wifi_sec.set_property(
                    NM.SETTING_WIRELESS_SECURITY_KEY_MGMT, "wpa-psk"
                )
            s_wifi_sec.set_property(
                NM.SETTING_WIRELESS_SECURITY_AUTH_ALG, "open"
            )
            s_wifi_sec.set_property(NM.SETTING_WIRELESS_SECURITY_PSK, password)
        elif "WEP" in ap_sec:
            s_wifi_sec.set_property(
                NM.SETTING_WIRELESS_SECURITY_KEY_MGMT, "None"
            )
            s_wifi_sec.set_property(
                NM.SETTING_WIRELESS_SECURITY_WEP_KEY_TYPE,
                NM.WepKeyType.PASSPHRASE,
            )
            s_wifi_sec.set_wep_key(0, password)
        profile.add_setting(s_wifi_sec)

    return profile


def verify_conn(client, result, data):
    """Callback function for add_and_activate_connection_async

    Check if connection completes successfully. Delete the connection if there
    is an error.

    """
    act_conn = client.add_and_activate_connection_finish(result)
    conn = act_conn.get_connection()
    try:
        if not all(
            [
                conn.verify(),
                conn.verify_secrets(),
                data.verify(),
                data.verify_secrets(),
            ]
        ):
            raise GLib.Error
        notify(f"Added {conn.get_id()}")
    except GLib.Error:
        try:
            notify(f"Connection to {conn.get_id()} failed", urgency="critical")
            conn.delete_async(None, None, None)
        except UnboundLocalError:
            pass
    finally:
        LOOP.quit()


def create_ap_list(adapter, active_connections):
    """Generate list of access points. Remove duplicate APs and hotspots,
    keeping strongest ones and the active AP

    Args: adapter
          active_connections - list of all active connections
    Returns: aps - list of access points
             active_ap - active AP
             active_ap_con - active Connection
             adapter

    """
    aps = []
    ap_names = []
    active_ap = adapter.get_active_access_point()
    aps_all = sorted(
        adapter.get_access_points(),
        key=lambda a: a.get_strength(),
        reverse=True,
    )
    if adapter.get_mode() == getattr(NM, "80211Mode").AP:
        # Remove active hotspot from AP list
        aps_all.remove(active_ap)
        active_ap = None
    conns_cur = [
        i
        for i in CONNS
        if i.get_setting_wireless() is not None
        and i.get_setting_wireless().get_mode() != "ap"  # filter out hotspots
        and conn_matches_adapter(i, adapter)
    ]
    try:
        ap_conns = active_ap.filter_connections(conns_cur) if active_ap else []
        active_ap_name = ssid_to_utf8(active_ap)
        active_ap_con = [
            active_conn
            for active_conn in active_connections
            if active_conn.get_connection() in ap_conns
        ]
    except AttributeError:
        active_ap_name = None
        active_ap_con = []
    if len(active_ap_con) > 1:
        raise ValueError("Multiple connection profiles match the wireless AP")
    active_ap_con = active_ap_con[0] if active_ap_con else None
    for nm_ap in aps_all:
        ap_name = ssid_to_utf8(nm_ap)
        if nm_ap != active_ap and ap_name == active_ap_name:
            # Skip adding AP if it's not active but same name as active AP
            continue
        if ap_name not in ap_names:
            ap_names.append(ap_name)
            aps.append(nm_ap)
    return aps, active_ap, active_ap_con, adapter


def notify(message, details=None, urgency="low"):
    """Use notify-send if available for notifications"""
    delay = CONF.getint("nmdm", "rescan_delay", fallback=5)
    show_notifications = CONF.getboolean("nmdm", "show_notifications", fallback=True)
    args = [
        "-u",
        urgency,
        "-a",
        "networkmanager-dmenu",
        "-t",
        str(delay * 1000),
        message,
    ]
    if details is not None:
        args.append(details)
    if is_installed("notify-send") and show_notifications:
        subprocess.run(["notify-send"] + args, check=False)


def run():  # pylint: disable=too-many-locals
    """Main script entrypoint"""
    try:
        subprocess.check_output(["pidof", "NetworkManager"])
    except subprocess.CalledProcessError:
        notify("WARNING: NetworkManager don't seems to be running")
        print("WARNING: NetworkManager don't seems to be running")
    active = CLIENT.get_active_connections()
    adapter = choose_adapter(CLIENT)
    if adapter:
        ap_actions = create_ap_actions(*create_ap_list(adapter, active))
    else:
        ap_actions = []

    vpns = [i for i in CONNS if i.is_type(NM.SETTING_VPN_SETTING_NAME)]
    try:
        wgs = [i for i in CONNS if i.is_type(NM.SETTING_WIREGUARD_SETTING_NAME)]
    except AttributeError:
        # Workaround for older versions of python-gobject with no wireguard support
        wgs = []
    hotspots = [
        i
        for i in CONNS
        if i.get_setting_wireless()
        and i.get_setting_wireless().get_mode() == "ap"
    ]
    eths = [i for i in CONNS if i.is_type(NM.SETTING_WIRED_SETTING_NAME)]
    vlans = [i for i in CONNS if i.is_type(NM.SETTING_VLAN_SETTING_NAME)]
    blues = [i for i in CONNS if i.is_type(NM.SETTING_BLUETOOTH_SETTING_NAME)]

    vpn_actions = create_vpn_actions(vpns, active)
    wg_actions = create_wireguard_actions(wgs, active)
    eth_actions = create_eth_actions(eths, active)
    vlan_actions = create_vlan_actions(vlans, active)
    blue_actions = create_blue_actions(blues, active)
    hotspot_actions = create_hotspot_actions(hotspots, active)
    other_actions = create_other_actions(CLIENT)
    wwan_installed = is_installed("ModemManager")
    if wwan_installed:
        gsms = [i for i in CONNS if i.is_type(NM.SETTING_GSM_SETTING_NAME)]
        gsm_actions = create_gsm_actions(gsms, active)
        wwan_actions = create_wwan_actions(CLIENT)
    else:
        gsm_actions = []
        wwan_actions = []

    list_saved = CONF.getboolean("dmenu", "list_saved", fallback=False)
    saved_cons = [i for i in CONNS if i not in vpns + wgs + eths + blues]
    if list_saved:
        saved_actions = create_saved_actions(saved_cons)
    else:
        saved_actions = [
            Action("Saved connections", prompt_saved, [saved_cons])
        ]

    actions = combine_actions(
        eth_actions,
        ap_actions,
        vlan_actions,
        vpn_actions,
        wg_actions,
        gsm_actions,
        blue_actions,
        wwan_actions,
        hotspot_actions,
        other_actions,
        saved_actions,
    )
    sel = get_selection(actions)
    sel()


def main():
    """Main. Enables script to be re-run after a WiFi rescan"""
    global CLIENT, CONNS, LOOP
    CLIENT = NM.Client.new(None)
    LOOP = GLib.MainLoop()
    CONNS = CLIENT.get_connections()
    run()


if __name__ == "__main__":
    main()

# vim: set et ts=4 sw=4 :