move watchtower to a plugin.

remove watchtower dialog in qt

electrum/plugins/watchtower/server.py

@@ -0,0 +1,46 @@
+import os
+import asyncio
+from collections import defaultdict
+from typing import TYPE_CHECKING
+
+from aiohttp import web
+
+from electrum.util import log_exceptions, ignore_exceptions
+from electrum.logging import Logger
+from electrum.util import EventListener
+from electrum.lnaddr import lndecode
+from electrum.daemon import AuthenticatedServer
+
+
+if TYPE_CHECKING:
+    from electrum.network import Network
+
+
+class WatchTowerServer(AuthenticatedServer):
+
+    def __init__(self, watchtower, network: 'Network', port:int):
+        self.port = port
+        self.config = network.config
+        self.network = network
+        watchtower_user = self.config.WATCHTOWER_SERVER_USER or ""
+        watchtower_password = self.config.WATCHTOWER_SERVER_PASSWORD or ""
+        AuthenticatedServer.__init__(self, watchtower_user, watchtower_password)
+        self.lnwatcher = watchtower
+        self.app = web.Application()
+        self.app.router.add_post("/", self.handle)
+        self.register_method(self.get_ctn)
+        self.register_method(self.add_sweep_tx)
+
+    async def run(self):
+        self.runner = web.AppRunner(self.app)
+        await self.runner.setup()
+        site = web.TCPSite(self.runner, host='localhost', port=self.port)
+        await site.start()
+        self.logger.info(f"running and listening on port {self.port}")
+
+    async def get_ctn(self, *args):
+        return await self.lnwatcher.get_ctn(*args)
+
+    async def add_sweep_tx(self, *args):
+        return await self.lnwatcher.sweepstore.add_sweep_tx(*args)
+