replace python django backend with nodejs backend

backend_old/ai/services/DcClient.py

@@ -0,0 +1,44 @@
+from threading import Thread
+
+from discord import Intents, Client
+
+from . import AiInstance
+
+
+class DcClient:
+    def __init__(self, _ai_instance: AiInstance):
+        self._ai_instance = _ai_instance
+
+        self._intents = Intents.default()
+        self._intents.message_content = True
+        self._discord_client = Client(intents=self._intents)
+
+        @self._discord_client.event
+        async def on_ready():
+            print(f'We have logged in as {self._discord_client.user}')
+
+        @self._discord_client.event
+        async def on_message(message):
+            if not self._ai_instance.discord.react_to_chat:
+                return None
+
+            if message.author == self._discord_client.user:
+                return
+
+            if message.content.isspace():
+                await message.channel.send('### Empty message')
+                return
+
+            response = self._ai_instance.chat_text(message.author.name, message.content)
+            if response is not None:
+                await message.channel.send(response['content'])
+
+    def connect(self):
+        def start():
+            self._discord_client.run(self._ai_instance.configuration.discord_token)
+
+        thread = Thread(target=start)
+        thread.start()
+
+    def disconnect(self):
+        self._discord_client.close()