Optimize message concatenation, add Wikipedia tool

Refactor the message concatenation logic within the chat response to ensure the original final message remains intact at the end of the sequence. Introduce a new 'Wikipedia' tool to the bot's capabilities, allowing users to query and retrieve information from Wikipedia directly through the bot's interface. This enhancement aligns with efforts to provide a more informative and interactive user experience.

src/gptbot/classes/openai.py

@@ -302,7 +302,7 @@ class OpenAI:
                 self.logger.log(f"No more responses received, aborting.")
                 result_text = False
             else:
-                messages = original_messages + [choice.message] + tool_responses
+                messages = original_messages[:-1] + [choice.message] + tool_responses + original_messages[-1:]
 
                 result_text, additional_tokens = await self.generate_chat_response(messages, user, room)
 

src/gptbot/tools/__init__.py

@@ -12,6 +12,7 @@ for tool in [
     "webrequest",
     "imagine",
     "imagedescription",
+    "wikipedia",
 ]:
     tool_class = getattr(import_module(
         "." + tool, "gptbot.tools"), tool.capitalize())

src/gptbot/tools/wikipedia.py

@@ -0,0 +1,62 @@
+from .base import BaseTool
+
+from urllib.parse import urlencode
+
+import aiohttp
+
+class Wikipedia(BaseTool):
+    DESCRIPTION = "Get information from Wikipedia."
+    PARAMETERS = {
+        "type": "object",
+        "properties": {
+            "query": {
+                "type": "string",
+                "description": "The query to search for.",
+            },
+            "language": {
+                "type": "string",
+                "description": "The language to search in.",
+                "default": "en",
+            },
+        },
+        "required": ["query"],
+    }
+
+    async def run(self):
+        """Get information from Wikipedia."""
+        if not (query := self.kwargs.get("query")):
+            raise Exception('No query provided.')
+
+        language = self.kwargs.get("language", "en")
+        extract = self.kwargs.get("extract", False)
+
+        args = {
+            "action": "query",
+            "format": "json",
+            "titles": query,
+        }
+
+        if extract:
+            args["prop"] = "extracts"
+            args["exintro"] = ""
+
+        else:
+            args["prop"] = "revisions"
+            args["rvprop"] = "content"
+
+        url = f'https://{language}.wikipedia.org/w/api.php?{urlencode(args)}'
+
+        async with aiohttp.ClientSession() as session:
+            async with session.get(url) as response:
+                if response.status == 200:
+                    data = await response.json()
+                    pages = data['query']['pages']
+                    page = list(pages.values())[0]
+                    if 'extract' in page:
+                        return f"**{page['title']} (Extract)**\n{page['extract']}"
+                    elif 'revisions' in page:
+                        return f"**{page['title']}**\n{page['revisions'][0]['*']}"
+                    else:
+                        raise Exception('No results found.')
+                else:
+                    raise Exception(f'Could not connect to Wikipedia API: {response.status} {response.reason}')