[#309] Remove wiimote integration.

The `cwiid` library and the Python bindings haven't been updated in
years, the `cwiid-git` package on Arch Linux still targets Python 2, and
installing `cwiid` via `pip` breaks recent versions of Python 3.

Closes: #309

docs/source/backends.rst

@@ -20,4 +20,3 @@ Backends
     platypush/backend/stt.picovoice.hotword.rst
     platypush/backend/stt.picovoice.speech.rst
     platypush/backend/tcp.rst
-    platypush/backend/wiimote.rst

docs/source/platypush/backend/wiimote.rst

@@ -1,6 +0,0 @@
-``wiimote``
-=============================
-
-.. automodule:: platypush.backend.wiimote
-    :members:
-

platypush/backend/wiimote/__init__.py

@@ -1,166 +0,0 @@
-import re
-import time
-
-from platypush.backend import Backend
-from platypush.message.event.wiimote import (
-    WiimoteEvent,
-    WiimoteConnectionEvent,
-    WiimoteDisconnectionEvent,
-)
-
-
-class WiimoteBackend(Backend):
-    """
-    Backend to communicate with a Nintendo WiiMote controller
-
-    Requires:
-
-        * **python3-wiimote** (follow instructions at https://github.com/azzra/python3-wiimote)
-
-    """
-
-    _wiimote = None
-    _inactivity_timeout = 300
-    _connection_attempts = 0
-    _last_btn_event_time = 0
-    _bdaddr = None
-
-    def __init__(
-        self, bdaddr=_bdaddr, inactivity_timeout=_inactivity_timeout, *args, **kwargs
-    ):
-        """
-        :param bdaddr: If set, connect to this specific Wiimote physical address (example: 00:11:22:33:44:55)
-        :type bdaddr: str
-
-        :param inactivity_timeout: Number of seconds elapsed from the last Wiimote action before disconnecting the
-            device (default: 300 seconds)
-        :type inactivity_timeout: float
-        """
-
-        super().__init__(*args, **kwargs)
-        self._bdaddr = bdaddr
-        self._inactivity_timeout = inactivity_timeout
-
-    def get_wiimote(self):
-        import cwiid
-
-        if not self._wiimote:
-            if self._bdaddr:
-                self._wiimote = cwiid.Wiimote(bdaddr=self._bdaddr)
-            else:
-                self._wiimote = cwiid.Wiimote()
-
-            self._wiimote.enable(cwiid.FLAG_MOTIONPLUS)
-            self._wiimote.rpt_mode = (
-                cwiid.RPT_ACC | cwiid.RPT_BTN | cwiid.RPT_MOTIONPLUS
-            )
-
-            self.logger.info('WiiMote connected')
-            self._last_btn_event_time = time.time()
-            self.bus.post(WiimoteConnectionEvent())
-
-        return self._wiimote
-
-    def get_state(self):
-        import cwiid
-
-        wm = self.get_wiimote()
-        state = wm.state
-        parsed_state = {}
-
-        # Get buttons
-        all_btns = [attr for attr in dir(cwiid) if attr.startswith('BTN_')]
-        parsed_state['buttons'] = {
-            btn: True
-            for btn in all_btns
-            if state.get('buttons', 0) & getattr(cwiid, btn) != 0
-        }
-
-        # Get LEDs
-        all_leds = [attr for attr in dir(cwiid) if re.match(r'LED\d_ON', attr)]
-        parsed_state['led'] = {
-            led[:4]: True
-            for led in all_leds
-            if state.get('leds', 0) & getattr(cwiid, led) != 0
-        }
-
-        # Get errors
-        all_errs = [attr for attr in dir(cwiid) if attr.startswith('ERROR_')]
-        parsed_state['error'] = {
-            err: True
-            for err in all_errs
-            if state.get('errs', 0) & getattr(cwiid, err) != 0
-        }
-
-        parsed_state['battery'] = round(state.get('battery', 0) / cwiid.BATTERY_MAX, 3)
-        parsed_state['rumble'] = bool(state.get('rumble', 0))
-
-        if 'acc' in state:
-            parsed_state['acc'] = tuple(int(acc / 5) * 5 for acc in state['acc'])
-
-        if 'motionplus' in state:
-            parsed_state['motionplus'] = {
-                'angle_rate': tuple(
-                    int(angle / 100) for angle in state['motionplus']['angle_rate']
-                ),
-                'low_speed': state['motionplus']['low_speed'],
-            }
-
-        return parsed_state
-
-    def close(self):
-        if not self._wiimote:
-            return
-
-        try:
-            self._wiimote.close()
-        except Exception as e:
-            self.logger.warning('Could not close Wiimote connection: {}'.format(str(e)))
-
-        self._wiimote = None
-        self.bus.post(WiimoteDisconnectionEvent())
-
-    def run(self):
-        super().run()
-
-        self._connection_attempts = 0
-        last_state = {}
-        self.logger.info('Initialized Wiimote backend')
-
-        while not self.should_stop():
-            try:
-                state = self.get_state()
-                changed_state = {
-                    k: state[k] for k in state.keys() if state[k] != last_state.get(k)
-                }
-
-                if changed_state:
-                    self.bus.post(WiimoteEvent(**changed_state))
-
-                if 'buttons' in changed_state:
-                    self._last_btn_event_time = time.time()
-                elif (
-                    last_state
-                    and time.time() - self._last_btn_event_time
-                    >= self._inactivity_timeout
-                ):
-                    self.logger.info('Wiimote disconnected upon timeout')
-                    self.close()
-
-                last_state = state
-                time.sleep(0.1)
-            except RuntimeError as e:
-                if (
-                    type(e) == RuntimeError
-                    and str(e) == 'Error opening wiimote connection'
-                ):
-                    if self._connection_attempts == 0:
-                        self.logger.info('Press 1+2 to pair your WiiMote controller')
-                else:
-                    self.logger.exception(e)
-
-                self.close()
-                self._connection_attempts += 1
-
-
-# vim:sw=4:ts=4:et:

platypush/backend/wiimote/manifest.yaml

@@ -1,12 +0,0 @@
-manifest:
-  events:
-    - platypush.message.event.wiimote.WiimoteEvent
-  install:
-    apt:
-      - libcwiid1
-    pacman:
-      - cwiid-git
-    pip:
-      - cwiid
-  package: platypush.backend.wiimote
-  type: backend