openpilot_comma/system/ui/widgets/network.py

from dataclasses import dataclass
from threading import Lock
from typing import Literal

import pyray as rl
from openpilot.system.ui.lib.application import gui_app, Widget
from openpilot.system.ui.lib.button import ButtonStyle, gui_button
from openpilot.system.ui.lib.label import gui_label
from openpilot.system.ui.lib.scroll_panel import GuiScrollPanel
from openpilot.system.ui.lib.wifi_manager import NetworkInfo, WifiManagerCallbacks, WifiManagerWrapper, SecurityType
from openpilot.system.ui.widgets.keyboard import Keyboard
from openpilot.system.ui.widgets.confirm_dialog import confirm_dialog

NM_DEVICE_STATE_NEED_AUTH = 60
MIN_PASSWORD_LENGTH = 8
MAX_PASSWORD_LENGTH = 64
ITEM_HEIGHT = 160
ICON_SIZE = 50

STRENGTH_ICONS = [
  "icons/wifi_strength_low.png",
  "icons/wifi_strength_medium.png",
  "icons/wifi_strength_high.png",
  "icons/wifi_strength_full.png",
]


@dataclass
class StateIdle:
  action: Literal["idle"] = "idle"


@dataclass
class StateConnecting:
  network: NetworkInfo
  action: Literal["connecting"] = "connecting"


@dataclass
class StateNeedsAuth:
  network: NetworkInfo
  action: Literal["needs_auth"] = "needs_auth"


@dataclass
class StateShowForgetConfirm:
  network: NetworkInfo
  action: Literal["show_forget_confirm"] = "show_forget_confirm"


@dataclass
class StateForgetting:
  network: NetworkInfo
  action: Literal["forgetting"] = "forgetting"


UIState = StateIdle | StateConnecting | StateNeedsAuth | StateShowForgetConfirm | StateForgetting


class WifiManagerUI(Widget):
  def __init__(self, wifi_manager: WifiManagerWrapper):
    super().__init__()
    self.state: UIState = StateIdle()
    self.btn_width: int = 200
    self.scroll_panel = GuiScrollPanel()
    self.keyboard = Keyboard(max_text_size=MAX_PASSWORD_LENGTH, min_text_size=MIN_PASSWORD_LENGTH, show_password_toggle=True)

    self._networks: list[NetworkInfo] = []
    self._lock = Lock()
    self.wifi_manager = wifi_manager

    self.wifi_manager.set_callbacks(
      WifiManagerCallbacks(
        need_auth=self._on_need_auth,
        activated=self._on_activated,
        forgotten=self._on_forgotten,
        networks_updated=self._on_network_updated,
        connection_failed=self._on_connection_failed
      )
    )
    self.wifi_manager.start()
    self.wifi_manager.connect()

  def _render(self, rect: rl.Rectangle):
    with self._lock:
      if not self._networks:
        gui_label(rect, "Scanning Wi-Fi networks...", 72, alignment=rl.GuiTextAlignment.TEXT_ALIGN_CENTER)
        return

      match self.state:
        case StateNeedsAuth(network):
          self.keyboard.set_title("Enter password", f"for {network.ssid}")
          gui_app.set_modal_overlay(self.keyboard, lambda result: self._on_password_entered(network, result))
        case StateShowForgetConfirm(network):
          gui_app.set_modal_overlay(lambda: confirm_dialog(f'Forget Wi-Fi Network "{network.ssid}"?', "Forget"),
                                    callback=lambda result: self.on_forgot_confirm_finished(network, result))
        case _:
          self._draw_network_list(rect)

  def _on_password_entered(self, network: NetworkInfo, result: int):
    if result == 1:
      password = self.keyboard.text
      self.keyboard.clear()

      if len(password) >= MIN_PASSWORD_LENGTH:
        self.connect_to_network(network, password)
    elif result == 0:
      self.state = StateIdle()

  def on_forgot_confirm_finished(self, network, result: int):
    if result == 1:
      self.forget_network(network)
    elif result == 0:
      self.state = StateIdle()

  def _draw_network_list(self, rect: rl.Rectangle):
    content_rect = rl.Rectangle(rect.x, rect.y, rect.width, len(self._networks) * ITEM_HEIGHT)
    offset = self.scroll_panel.handle_scroll(rect, content_rect)
    clicked = self.scroll_panel.is_click_valid()

    rl.begin_scissor_mode(int(rect.x), int(rect.y), int(rect.width), int(rect.height))
    for i, network in enumerate(self._networks):
      y_offset = rect.y + i * ITEM_HEIGHT + offset.y
      item_rect = rl.Rectangle(rect.x, y_offset, rect.width, ITEM_HEIGHT)
      if not rl.check_collision_recs(item_rect, rect):
        continue

      self._draw_network_item(item_rect, network, clicked)
      if i < len(self._networks) - 1:
        line_y = int(item_rect.y + item_rect.height - 1)
        rl.draw_line(int(item_rect.x), int(line_y), int(item_rect.x + item_rect.width), line_y, rl.LIGHTGRAY)

    rl.end_scissor_mode()

  def _draw_network_item(self, rect, network: NetworkInfo, clicked: bool):
    spacing = 50
    ssid_rect = rl.Rectangle(rect.x, rect.y, rect.width - self.btn_width * 2, ITEM_HEIGHT)
    signal_icon_rect = rl.Rectangle(rect.x + rect.width - ICON_SIZE, rect.y + (ITEM_HEIGHT - ICON_SIZE) / 2, ICON_SIZE, ICON_SIZE)
    security_icon_rect = rl.Rectangle(signal_icon_rect.x - spacing - ICON_SIZE, rect.y + (ITEM_HEIGHT - ICON_SIZE) / 2, ICON_SIZE, ICON_SIZE)

    gui_label(ssid_rect, network.ssid, 55)

    status_text = ""
    match self.state:
      case StateConnecting(network=connecting):
        if connecting.ssid == network.ssid:
          status_text = "CONNECTING..."
      case StateForgetting(network=forgetting):
        if forgetting.ssid == network.ssid:
          status_text = "FORGETTING..."

    if status_text:
      status_text_rect = rl.Rectangle(security_icon_rect.x - 410, rect.y, 410, ITEM_HEIGHT)
      gui_label(status_text_rect, status_text, font_size=48, alignment=rl.GuiTextAlignment.TEXT_ALIGN_CENTER)
    else:
      # If the network is saved, show the "Forget" button
      if network.is_saved:
        forget_btn_rect = rl.Rectangle(
          security_icon_rect.x - self.btn_width - spacing,
          rect.y + (ITEM_HEIGHT - 80) / 2,
          self.btn_width,
          80,
        )
        if isinstance(self.state, StateIdle) and gui_button(forget_btn_rect, "Forget", button_style=ButtonStyle.ACTION) and clicked:
          self.state = StateShowForgetConfirm(network)

    self._draw_status_icon(security_icon_rect, network)
    self._draw_signal_strength_icon(signal_icon_rect, network)

    if isinstance(self.state, StateIdle) and rl.check_collision_point_rec(rl.get_mouse_position(), ssid_rect) and clicked:
      if not network.is_saved and network.security_type != SecurityType.OPEN:
        self.state = StateNeedsAuth(network)
      elif not network.is_connected:
        self.connect_to_network(network)

  def _draw_status_icon(self, rect, network: NetworkInfo):
    """Draw the status icon based on network's connection state"""
    icon_file = None
    if network.is_connected:
      icon_file = "icons/checkmark.png"
    elif network.security_type == SecurityType.UNSUPPORTED:
      icon_file = "icons/circled_slash.png"
    elif network.security_type != SecurityType.OPEN:
      icon_file = "icons/lock_closed.png"

    if not icon_file:
      return

    texture = gui_app.texture(icon_file, ICON_SIZE, ICON_SIZE)
    icon_rect = rl.Vector2(rect.x, rect.y + (ICON_SIZE - texture.height) / 2)
    rl.draw_texture_v(texture, icon_rect, rl.WHITE)

  def _draw_signal_strength_icon(self, rect: rl.Rectangle, network: NetworkInfo):
    """Draw the Wi-Fi signal strength icon based on network's signal strength"""
    strength_level = max(0, min(3, round(network.strength / 33.0)))
    rl.draw_texture_v(gui_app.texture(STRENGTH_ICONS[strength_level], ICON_SIZE, ICON_SIZE), rl.Vector2(rect.x, rect.y), rl.WHITE)

  def connect_to_network(self, network: NetworkInfo, password=''):
    self.state = StateConnecting(network)
    if network.is_saved and not password:
      self.wifi_manager.activate_connection(network.ssid)
    else:
      self.wifi_manager.connect_to_network(network.ssid, password)

  def forget_network(self, network: NetworkInfo):
    self.state = StateForgetting(network)
    network.is_saved = False
    self.wifi_manager.forget_connection(network.ssid)

  def _on_network_updated(self, networks: list[NetworkInfo]):
    with self._lock:
      self._networks = networks

  def _on_need_auth(self, ssid):
    with self._lock:
      network = next((n for n in self._networks if n.ssid == ssid), None)
      if network:
        self.state = StateNeedsAuth(network)

  def _on_activated(self):
    with self._lock:
      if isinstance(self.state, StateConnecting):
        self.state = StateIdle()

  def _on_forgotten(self, ssid):
    with self._lock:
      if isinstance(self.state, StateForgetting):
        self.state = StateIdle()

  def _on_connection_failed(self, ssid: str, error: str):
    with self._lock:
      if isinstance(self.state, StateConnecting):
        self.state = StateIdle()


def main():
  gui_app.init_window("Wi-Fi Manager")
  wifi_manager = WifiManagerWrapper()
  wifi_ui = WifiManagerUI(wifi_manager)

  for _ in gui_app.render():
    wifi_ui.render(rl.Rectangle(50, 50, gui_app.width - 100, gui_app.height - 100))

  wifi_manager.shutdown()
  gui_app.close()


if __name__ == "__main__":
  main()