From 45664be44b8b21201cdf196302dae73457d59174 Mon Sep 17 00:00:00 2001
From: Fabio Manganiello <fabio@manganiello.tech>
Date: Mon, 13 Feb 2023 23:13:51 +0100
Subject: [PATCH] Removed deprecated `backend.bluetooth.scanner`.

Scan capabilities are now implemented on the `bluetooth` plugin itself.
---
 .../backend/bluetooth/scanner/__init__.py     | 109 ------------------
 .../backend/bluetooth/scanner/manifest.yaml   |  10 --
 2 files changed, 119 deletions(-)
 delete mode 100644 platypush/backend/bluetooth/scanner/__init__.py
 delete mode 100644 platypush/backend/bluetooth/scanner/manifest.yaml

diff --git a/platypush/backend/bluetooth/scanner/__init__.py b/platypush/backend/bluetooth/scanner/__init__.py
deleted file mode 100644
index a0f220ee72..0000000000
--- a/platypush/backend/bluetooth/scanner/__init__.py
+++ /dev/null
@@ -1,109 +0,0 @@
-import time
-from threading import Thread, RLock
-from typing import Dict, Optional, List
-
-from platypush.backend.sensor import SensorBackend
-from platypush.context import get_plugin
-from platypush.message.event.bluetooth import BluetoothDeviceFoundEvent, BluetoothDeviceLostEvent
-
-
-class BluetoothScannerBackend(SensorBackend):
-    """
-    This backend periodically scans for available bluetooth devices and returns events when a devices enter or exits
-    the range.
-
-    Triggers:
-
-        * :class:`platypush.message.event.bluetooth.BluetoothDeviceFoundEvent` when a new bluetooth device is found.
-        * :class:`platypush.message.event.bluetooth.BluetoothDeviceLostEvent` when a bluetooth device is lost.
-
-    Requires:
-
-        * The :class:`platypush.plugins.bluetooth.BluetoothPlugin` plugin working.
-
-    """
-
-    def __init__(self, device_id: Optional[int] = None, scan_duration: int = 10,
-                 track_devices: Optional[List[str]] = None, **kwargs):
-        """
-        :param device_id: Bluetooth adapter ID to use (default configured on the ``bluetooth`` plugin if None).
-        :param scan_duration:  How long the scan should run (default: 10 seconds).
-        :param track_devices: List of addresses of devices to actively track, even if they aren't discoverable.
-        """
-        super().__init__(plugin='bluetooth', plugin_args={
-            'device_id': device_id,
-            'duration': scan_duration,
-        }, **kwargs)
-
-        self._last_seen_devices = {}
-        self._tracking_thread: Optional[Thread] = None
-        self._bt_lock = RLock()
-        self.track_devices = set(track_devices or [])
-        self.scan_duration = scan_duration
-
-    def _add_last_seen_device(self, dev):
-        addr = dev.pop('addr')
-        if addr not in self._last_seen_devices:
-            self.bus.post(BluetoothDeviceFoundEvent(address=addr, **dev))
-        self._last_seen_devices[addr] = {'addr': addr, **dev}
-
-    def _remove_last_seen_device(self, addr: str):
-        dev = self._last_seen_devices.get(addr)
-        if not dev:
-            return
-
-        self.bus.post(BluetoothDeviceLostEvent(address=addr, **dev))
-        del self._last_seen_devices[addr]
-
-    def _addr_tracker(self, addr):
-        with self._bt_lock:
-            name = get_plugin('bluetooth').lookup_name(addr, timeout=self.scan_duration).name
-
-        if name is None:
-            self._remove_last_seen_device(addr)
-        else:
-            self._add_last_seen_device({'addr': addr, 'name': name})
-
-    def _bt_tracker(self):
-        self.logger.info('Starting Bluetooth tracker')
-        while not self.should_stop():
-            trackers = []
-            for addr in self.track_devices:
-                tracker = Thread(target=self._addr_tracker, args=(addr,))
-                tracker.start()
-                trackers.append(tracker)
-
-            for tracker in trackers:
-                tracker.join(timeout=self.scan_duration)
-
-            time.sleep(self.scan_duration)
-
-        self.logger.info('Bluetooth tracker stopped')
-
-    def get_measurement(self):
-        with self._bt_lock:
-            return super().get_measurement()
-
-    def process_data(  # lgtm [py/inheritance/signature-mismatch]
-        self, data: Dict[str, dict], new_data: Optional[Dict[str, dict]] = None, **_
-    ):
-        for addr, dev in data.items():
-            self._add_last_seen_device(dev)
-
-        for addr, dev in self._last_seen_devices.copy().items():
-            if addr not in data and addr not in self.track_devices:
-                self._remove_last_seen_device(addr)
-
-    def run(self):
-        self._tracking_thread = Thread(target=self._bt_tracker)
-        self._tracking_thread.start()
-        super().run()
-
-    def on_stop(self):
-        super().on_stop()
-        if self._tracking_thread and self._tracking_thread.is_alive():
-            self.logger.info('Waiting for the Bluetooth tracking thread to stop')
-            self._tracking_thread.join(timeout=self.scan_duration)
-
-
-# vim:sw=4:ts=4:et:
diff --git a/platypush/backend/bluetooth/scanner/manifest.yaml b/platypush/backend/bluetooth/scanner/manifest.yaml
deleted file mode 100644
index 1a3c6c8529..0000000000
--- a/platypush/backend/bluetooth/scanner/manifest.yaml
+++ /dev/null
@@ -1,10 +0,0 @@
-manifest:
-  events:
-    platypush.message.event.bluetooth.BluetoothDeviceFoundEvent: when a new bluetooth
-      device is found.
-    platypush.message.event.bluetooth.BluetoothDeviceLostEvent: when a bluetooth device
-      is lost.
-  install:
-    pip: []
-  package: platypush.backend.bluetooth.scanner
-  type: backend