1 files changed, 128 insertions, 0 deletions
diff --git a/include/py/homekit/soundsensor/server.py b/include/py/homekit/soundsensor/server.py
new file mode 100644
index 0000000..a627390
--- /dev/null
+++ b/include/py/homekit/soundsensor/server.py
@@ -0,0 +1,128 @@
+import asyncio
+import json
+import logging
+import threading
+
+from ..database.sqlite import SQLiteBase
+from ..config import config
+from .. import http
+
+from typing import Type
+from ..util import Addr
+
+logger = logging.getLogger(__name__)
+
+
+class SoundSensorHitHandler(asyncio.DatagramProtocol):
+    def datagram_received(self, data, addr):
+        try:
+            data = json.loads(data)
+        except json.JSONDecodeError as e:
+            logger.error('failed to parse json datagram')
+            logger.exception(e)
+            return
+
+        try:
+            name, hits = data
+        except (ValueError, IndexError) as e:
+            logger.error('failed to unpack data')
+            logger.exception(e)
+            return
+
+        self.handler(name, hits)
+
+    def handler(self, name: str, hits: int):
+        pass
+
+
+class Database(SQLiteBase):
+    SCHEMA = 1
+
+    def __init__(self):
+        super().__init__(dbname='sound_sensor_server')
+
+    def schema_init(self, version: int) -> None:
+        cursor = self.cursor()
+
+        if version < 1:
+            cursor.execute("CREATE TABLE IF NOT EXISTS status (guard_enabled INTEGER NOT NULL)")
+            cursor.execute("INSERT INTO status (guard_enabled) VALUES (-1)")
+
+        self.commit()
+
+    def get_guard_enabled(self) -> int:
+        cur = self.cursor()
+        cur.execute("SELECT guard_enabled FROM status LIMIT 1")
+        return int(cur.fetchone()[0])
+
+    def set_guard_enabled(self, enabled: bool) -> None:
+        cur = self.cursor()
+        cur.execute("UPDATE status SET guard_enabled=?", (int(enabled),))
+        self.commit()
+
+
+class SoundSensorServer:
+    def __init__(self,
+                 addr: Addr,
+                 handler_impl: Type[SoundSensorHitHandler]):
+        self.addr = addr
+        self.impl = handler_impl
+        self.db = Database()
+
+        self._recording_lock = threading.Lock()
+        self._recording_enabled = True
+
+        if self.guard_control_enabled():
+            current_status = self.db.get_guard_enabled()
+            if current_status == -1:
+                self.set_recording(config['server']['guard_recording_default']
+                                   if 'guard_recording_default' in config['server']
+                                   else False,
+                                   update=False)
+            else:
+                self.set_recording(bool(current_status), update=False)
+
+    @staticmethod
+    def guard_control_enabled() -> bool:
+        return 'guard_control' in config['server'] and config['server']['guard_control'] is True
+
+    def set_recording(self, enabled: bool, update=True):
+        with self._recording_lock:
+            self._recording_enabled = enabled
+        if update:
+            self.db.set_guard_enabled(enabled)
+
+    def is_recording_enabled(self) -> bool:
+        with self._recording_lock:
+            return self._recording_enabled
+
+    def run(self):
+        if self.guard_control_enabled():
+            t = threading.Thread(target=self.run_guard_server)
+            t.daemon = True
+            t.start()
+
+        loop = asyncio.get_event_loop()
+        t = loop.create_datagram_endpoint(self.impl, local_addr=self.addr)
+        loop.run_until_complete(t)
+        loop.run_forever()
+
+    def run_guard_server(self):
+        routes = http.routes()
+
+        @routes.post('/guard/enable')
+        async def guard_enable(request):
+            self.set_recording(True)
+            return http.ok()
+
+        @routes.post('/guard/disable')
+        async def guard_disable(request):
+            self.set_recording(False)
+            return http.ok()
+
+        @routes.get('/guard/status')
+        async def guard_status(request):
+            return http.ok({'enabled': self.is_recording_enabled()})
+
+        asyncio.set_event_loop(asyncio.new_event_loop())  # need to create new event loop in new thread
+        http.serve(self.addr, routes, handle_signals=False)  # handle_signals=True doesn't work in separate thread